Lawrence Berkeley Laboratory

University of California Berkeley, California 94720

Energy and Environment Division

Energy Analysis Program

June 3, 1994

darns-x-- -.

U.S. Department of Energy

Forrestal Building

1000 Independence Avenue

Washington, DC 20585

Dear Carl:

(510) 486-4000 • FTS 451-4000

Building 90-4000

Enclosed are two sets of copies of new Life Cycle Cost (LCC) tables and curves for the eight

product classes of central air conditioners and heat pumps. Please deliver one set of the LCC

tables and curves to Ed Pollock for his review. These new LCC tables and curves are based upon

retail prices generated by the Manufacturer Impact Model (MIM). Looking at the LCC tables, you

will notice a column for manufacturer-to-retail mark ups and retail costs. Also notice that the mark

ups are not constant. Please use these new LCC tables to select trial standard levels.

If you have any questions regarding these new tables and curves, please do not hesitate to call me.

Sincerely,

Gregory Rosenquist

EE-RM-93-801 COMMENT 0DD

Lawrence Berkeley Laboratory 

University of California Berkeley, California 94720 i--------------------------------~----------------~~------------

... : .. / Energy and Environment Division .. ' Energy Analysis Program 

Carl Adam.s-----

U.S. Department of Energy 

Forrestal Building 

1000 Independence Avenue 

Washington, DC 20585 

Dear Carl: 

June 3,1994 

(510) 486-4000 • FTS 451-4000 

Building 90-4000 

Enclosed are two sets of copies of new Life Cycle Cost (LCC) tables and curves for the eight 

product classes of central air conditioners and heat pumps. Please deliver one set of the LCC 

tables and curves to Ed Pollock for his review. These new LCC tables and curves are based upon 

retail prices generated by the Manufacturer Impact Model (MIM). Looking at the LCC tables, you 

will notice a column for manufacturer-to-retail mark ups and retail costs. Also notice that the mark 

ups are not constant. Please use these new LCC tables to select trial standard levels. 

If you have any questions regarding these new tables and curves, please do not hesitate to call me. 

Sincerely, 

/L----y-?~ 

Gregory Rosenquist 
6/3/94

Life Cycle Costs and Payback Periods of 3-ton, Split System Central Air Conditioner

Level Design Option

SEER Manufr

Cost

Incr.

Manufr

Cost

Retail

Cost

Mark

Up

Installed

Installation Maintenance Consumer

Cost Cost Cost

Annual

Elec.

use

Annual

Energy

cost

Cumul.

Payback

Period

Lifecycle Costs

(1992$)

Cumulative

Cost of Conserved Energy

cents/kWh

Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) 1992$ kWh/yr 1992$ ears 4% 6% 10% 4% 6% 10%

0 Baseline 10.00 $474.00 - $1,142.32 2.410 $972.71 $46.69 $2161.72 3427 $290 NA $5,392 $4,983 $4,371 NA NA NA

1 0 + Backward Inclined Indoor Blower 10.28 $474.04 $0.04 $1,142.21 2.410 $972.71 $46.69 $2161.61 3337 $283 -0.01 $5,306 $4,909 $4,313 -0.01 -0.01 -0.02

2 1 + Evaporator Slit Fins 10.40 $474.13 $0.09 $1,143.24 2.411 $972.71 $46.69 $2162.64 3297 $279 0.08 $5,269 $4,876 $4,288 0.06 0.07 0.09

3 2 + Reciprocating Compressor: 10.91 EER 11.34 $481.51 $7.38 $1,153.53 2.396 $972.71 $46.69 $2172.93 3025 $256 0.33 $5,023 $4,663 $4,123 0.25 0.29 0.37

4 3 + More Efficient Condenser PSC Fan Motor (65.0%) 11.47 $486.46 $4.95 $1,164.12 2.393 $972.71 $39.08 $2175.91 2990 $253 0.38 $4,994 $4,637 $4,104 0.29 0.33 0.43

5 4 + More Efficient Evaporator PSC Fan Motor (68.5% 11.73 $493.68 $7.22 $1,178.42 2.387 $972.71 $31.47 -$2182.60 2922 $248 0.49 $4,936 $4,588 $4,066 0.37 0.43 0.54 6 5 +Time Delay Relay 12.18 $500.18 $6.50 $1,190.49 2.380 $972.71 $31.47 $2194.67 2815 $239 0.64 $4,848 $4,512 $4,010 0.48 0.55 0.71 7 6 + Condenser Grooved Tubes 12.62 $506.13 $5.95 $1,201.66 2.374 $972.71 $31.47 $2205.84 2716 $230 0.73 $4,765 $4,442 $3,957 0.56 0.64 0.82 8 7 + Increase Evaporator Fin Density to 14 fpi 12.68 $506.88 $0.75 $1,204.58 2.376 $972.71 $31.47 $2208.76 2704 $229 0.77 $4,757 $4,435 $3,952 0.59 0.67 0.86

9 8 + Scroll Compressor: 11.50 EER / Non-Bleed TXV 13.51 $543.29 $36.41 $1,273.46 2.344 $972.71 $31.47 $2277.64 2538 $215 1.54 $4,669 $4,367 $3,914 1.17 1.34 1.71 10 9 + Increase Evaporator Face Area to 6.60 sq.ft. 14.40 $565.51 $22.22 $1,313.96 2.323 $989.69 $31.47 $2335.12 2381 $202 1.96 $4,579 $4,295 $3,870 1.49 1.71 2.18 11 10 + Increase Condenser Face Area to 18.03 sq.ft. 15.19 $586.24 $20.73 $1,352.51 2.307 $1024.25 $31.47 $2408.23 2257 $191 2.49 $4,535 $4,266 $3,863 1.89 2.17 2.77 12 11 + Increase Evaporator Face Area to 7.50 sq.ft. 15.37 $594.35 $8.11 $1,370.26 2.305 $1030.42 $31.47 $2432.15 2230 $189 2.67 $4,534 $4,268 $3,870 2.03 2.33 2.97 13 12 + Increase Condenser Face Area to 28.33 sq.ft. 15.82 $635.95 $41.60 $1,450.19 2.280 $1099.53 $31.47 $2581.19 2167 $184 3.93 $4,624 $4,365 $3,978 2.99 3.43 4.38 14 13 + Evaporator ECM Fan Motor 16.40 $777.26 $141.31 $1,727.30 2.222 $1099.53 $47.09 $2873.92 2091 $177 6.29 $4,844 $4,595 $4,222 4.79 5.49 7.01 15 14 + Electronic Expansion Valve 16.60 $853.43 $76.17 $1,879.11 2.202 $1099.53 $56.07 $3034.71 2066 $175 7.56 $4,981 $4,735 $4,366 5.77 6.60 8.43 16 15 + Condenser ECM Fan Motor 16.75 $919.98 $66.55 $2,012.64 2.188 $1099.53 $63.68 $3175.85 2047 $173 8.67 $5,105 $4,861 $4,495 6.61 7.56 9.66 17 16 + Two-Speed Recip-Compressor System 18.20 $1,100.67 $180.69 $2,360.10 2.144 $1099.53 $76.66 $3536.29 1884 $160 10.51 $5,312 $5,087 $4,751 8.01 9.17 11.71 18 16 + Variable-Speed Recip-Compressor System 18.58 $1,511.92 $591.94 $3,154.36 2.086 $1099.53 $120.59 $4374.48 1846 $156 16.50 $6,114 $5,894 $5,564 12.58 14.40 18.39 19 16 + Two-Speed Scroll-Compressor System 18.91 $1,411.92 $491.94 $2,974.68 2.107 $1099.53 $116.22 $4190.43 1814 $154 14.83 $5,900 $5,683 $5,360 11.31 12.94 16.53 20 16 + Variable-Speed Scroll-Compressor System 21.18 $1,561.92 $641.94 $3,269.21 2.093 $1099.53 $122.78 $4491.52 1619 $137 15.20 $6,017 $5,824 $5,535 11.59 13.26 16.94

Assumptions:

1 Electricity cost =0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime = 15 years.

3 Baseline unit includes:

Evaporator: 4.13 sq.ft., 13 finsfinch, Wavy Fins, 3 tube rows, Groove Tubes

Condenser: 12.88 sq.ft., 20 fins/inch, Slit Fins, 1 tube row, Smooth Tubes

Compressor: Reciprocating, 10.20 EER (nominal)

Evaporator Fan Motor: PSC, 58.5% efficient

Condenser Fan Motor : PSC, 55.0% efficient

Enhancement Devices: None

4 Non-Bleed Thermostatic Expansion Valve replaces the need for a Time Delay Relay

5 Maximum Sensible Heat Ratio = 76.5%

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

7 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of 3-lon, Split System Central Air Conditioner 

Incr. Installed Annual Annual Cumul. Lifecycle Costs 

SEER Manufr Manufr Retail Mark Installation Maintenance Consumer Elec. Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost Cost use cost Period (1992$) 

BtuhIW (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWb/yr (1992$) (years) 4% 6% 10% 

0 Baseline 10.00 $474.00 - $1,142.32 2.410 $972.71 $46.69 $2161.72 3427 $290 NA $5,392 $4,983 $4,371 

1 o + Backward Inclined Indoor Blower 10.28 $474.04 $0.04 $1,142.21 2.410 $972.71 $46.69 $2161.61 3337 $283 -0.01 $5,306 $4,909 $4,313 

2 1 + Evaporator Slit Fins 10.40 $474.13 $0.09 $1,143.24 2.411 $972.71 $46.69 $2162.64 3297 $279 0.08 $5,269 $4,876 $4,288 

3 2 + Reciprocating Compressor: 10.91 EER 11.34 $481.51 $7.38 $1,153.53 2.396 $972.71 $46.69 $2172.93 3025 $256 0.33 $5,023 $4,663 $4,123 

4 3 + More Efficient Condenser PSC Fan Motor (65.0%) 11.47 $486.46 $4.95 $1,164.12 2.393 $972.71 $39.08 $2175.91 2990 $253 0.38 $4,994 $4,637 $4,104 

5 4 + More Efficient Evaporator PSC Fan Motor (68.5% 11.73 $493.68 $7.22 $1,178.42 2.387 $972.71 $31.47 - $2182.60 2922 $248 0.49 $4,936 $4,588 $4,066 

6 5 + Time Delay Relay 12.18 $500.18 $6.50 $1,190.49 2.380 $972.71 $31.47 $2194.67 2815 $239 0.64 $4,848 $4,512 $4,010 

7 6 + Condenser Grooved Tubes 12.62 $506.13 $5.95 $1,201.66 2.374 $972.71 $31.47 $2205.84 2716 $230 0.73 $4,765 $4,442 $3,957 

8 7 + Increase Evaporator Fin Density to 14 fpi 12.68 $506.88 $0.75 $1,204.58 2.376 $972.71 $31.47 $2208.76 2704 $229 0.77 $4,757 $4,435 $3,952 

9 8 + Scroll Compressor: 11.50 EER / Non-Bleed TXV 13.51 $543.29 $36.41 $1,273.46 2.344 $972.71 $31.47 $2277.64 2538 $215 1.54 $4,669 $4,367 $3,914 

10 9 + Increase Evaporator Face Area to 6.60 sq.ft. 14.40 $565.51 $22.22 $1,313.96 2.323 $989.69 $31.47 $2335.12 2381 $202 1.96 $4,579 $4,295 $3,870 

11 10 + Increase Condenser Face Area to 18.03 sq.ft. 15.19 $586.24 $20.73 $1,352.51 2.307 $1024.25 $31.47 $2408.23 2257 $191 2.49 $4,535 $4,266 $3,863 

12 11 + Increase Evaporator Face Area to 7.50 sq.ft. 15.37 $594.35 $8.11 $1,370.26 2.305 $1030.42 $31.47 $2432.15 2230 $189 2.67 $4,534 $4,268 $3,870 

13 12 + Increase Condenser Face Area to 28.33 sq.ft. 15.82 $635.95 $41.60 $1,450.19 2.280 $1099.53 $31.47 $2581.19 2167 $184 3.93 $4,624 $4,365 $3,978 

14 13 + Evaporator ECM Fan Motor 16.40 $777.26 $141.31 $1,727.30 2.222 $1099.53 $47.09 $2873.92 2091 $177 6.29 $4,844 $4,595 $4,222 

15 14 + Electronic Expansion Valve 16.60 $853.43 $76.17 $1,879.11 2.202 $1099.53 $56.07 $3034.71 2066 $175 7.56 $4,981 $4,735 $4,366 

16 15 + Condenser ECM Fan Motor 16.75 $919.98 $66.55 $2,012.64 2.188 $1099.53 $63.68 $3175.85 2047 $173 8.67 $5,105 $4,861 $4,495 

17 16 + Two-Speed Recip-Compressor System 18.20 $1,100.67 $180.69 $2,360.10 2.144 $1099.53 $76.66 $3536.29 1884 $160 10.51 $5,312 $5,087 $4,751 

18 16 + Variable-Speed Recip-Compressor System 18.58 $1,511.92 $591.94 $3,154.36 2.086 $1099.53 $120.59 $4374.48 1846 $156 16.50 $6,114 $5,894 $5,564 

19 16 + Two-Speed Scroll-Compressor System 18.91 $1,411.92 $491.94 $2,974.68 2.107 $1099.53 $116.22 $4190.43 1814 $154 14.83 $5,900 $5,683 $5,360 

20 16 + Variable-Speed Scroll-Compressor System 21.18 $1,561.92 $641.94 $3,269.21 2.093 $1099.53 $122.78 $4491.52 1619 $137 15.20 $6,017 $5,824 $5,535 

A,sumptjons' 

1 Electricity cost = 0.085 $IkWb (average cost in 1999 obtllined from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWb (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment). 

2 Lifetime = 15 years. 

3 Baseline unit includes: 

Evaporator: 4.13 sq.ft., 13 fins/inch, Wavy Fins, 3 tube rows, Groove Tubes 

Condenser: 12.88 sq.ft., 20 fins/inch, Slit Fins, 1 tube row, Smooth Tubes 

Compressor: Reciprocating. 10.20 EER (nominal) 

Evaporator Fan Motor: PSC, 58.5% efficient 

Condenser Fan Motor: PSC, 55.0% efficient 

Enhancement Devices: None 

4 Non-Bleed Thermostatic Expansion Valve replaces the need for a Time Delay Relay 

5 Maximum Sensible Heat Ratio = 76.5% 

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

7 Condenser ECM Fan Motor is run at a single speed. 

6/3/94 

Cumulative 

Cost of Conserved Energy 

(cents/kWb) 

4% 6% 10% 

NA NA NA 

-0.01 -0.01 -0.02 

0.06 0.07 0.09 

0.25 0.29 0.37 

0.29 0.33 0.43 

0.37 0.43 0.54 

0.48 0.55 0.71 

0.56 0.64 0.82 

0.59 0.67 0.86 

1.17 1.34 1.71 

1.49 1.71 2.18 

1.89 2.17 2.77 

2.03 2.33 2.97 

2.99 3.43 4.38 

4.79 5.49 7.01 

5.77 6.60 8.43 

6.61 7.56 9.66 

8.01 9.17 11.71 

12.58 14.40 18.39 

11.31 12.94 16.53 

11.59 13.26 16.94 
6/3/94

Life Cycle Cost for 3-ton Split System

Central Air Conditioner

$6,000

$5,800

$5,600

$5,400

$5,000

$4,800

$4,600

$4,400

0- 6% discount rate

$4,200 I I

9.0 10.0 9.1.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0

SEER

EE-RM-93-801 COMMENT 0DD

$6,000 

$5,800 

$5,600 

$5,400 

~ t"l $5,200 0\ 

0\ 

'1""'1 

'-' 

U U $5,000 

.J 

$4,800 

$4,600 

$4,400 

$4,200 

9.0 

6/3/94 

Life Cycle Cost for 3-ton Split System 

Central Air Conditioner 

1--0--- 6% discount rate 1 

0 

1 

3 15 

5 14 

6 

9 

10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 

SEER 

18 20 

19 

19.0 20.0 21.0 22.0 
6/3/94

Life Cycle Cost for 3-ton Split System

Central Air Conditioner

$6,200

$5,800

$5,400

$4,600

$4,200

4% discount rate

- - 6% discount rate

- - - - 10% discount rate

A

$3,800

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0

SEER

EE-RM-93-801 COMMENT 0DD

$6,200 

$5,800 

$5,400 

~ N 

Q\ 

Q\ 

C $5,000 

U 

~ 

$4,600 

$4,200 

* .. '+, 

6/3/94 

Life Cycle Cost for 3-ton Split System 

Central Air Conditioner 

---0--- 4% discount rate 

- - -6 - - 6% discount rate 

- - - - +- - - - 10% discount rate 

, 

• 

'+ 

"", - ,+ - - -+ - - - , -+-----+. 

$3,800 ----1--------1---------1-----1 1 -+1----+----+----+-----+----+---1 

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0 

SEER 
6/3/94

Life Cycle Costs and Payback Periods of 5-ton , Split System Central Air Conditioner

Level Design Option

SEER Manufr

Cost

Incr.

Manufr

Cost

Retail

Cost

Mark

Up

Installed

Installation Maintenance Consumer

Cost Cost Cost

Annual

Elec.

use

Annual

Energy

cost

Cumul.

Payback

Period

Lifecycle Costs

(1992$)

Cumulative

Cost of Conserved Energy

(cents/kWh)

Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr (1992$) (years) 4% 6% 10% 4% 6% 10%

0 Baseline 10.01 $666.00 - $1833.05 2.752 $1494.33 $46.69 $3374.07 5783 $490 NA $8,824 $8,134 $7,102 NA NA NA

1 0 + Backward Inclined Indoor Blower 10.29 $666.02 $0.02 $1832.80 2.752 $1494.33 $46.69 $3373.82 5625 $477 -0.02 $8,675 $8,005 $7,000 -0.01 -0.02 -0.02

2 1 + Evaporator Slit Fins 10.38 $666.23 $0.21 $1834.52 2.754 $1494.33 $46.69 $3375.54 5576 $473 0.08 $8,630 $7,966 $6,970 0.06 0.07 0.09

3 2 + Scroll Compressor: 11.30 EER 11.88 $690.87 $24.64 $1881.00 2.723 $1494.33 $46.69 $3422.02 4871 $413 0.62 $8,013 $7,432 $6,563 0.47 0.54 0.69

4 3 + Time Delay Relay 12.34 $697.37 $6.50 $1894.76 2.717 $1494.33 $46.69 $3435.78 4689 $397 0.67 $7,855 $7,296 $6,459 0.51 0.58 0.74

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 12.65 $707.14 $9.77 $1916.73 2.711 $1494.33 $39.08 $3450.14 4573 $388 0.74 $7,760 $7,215 $6,398 0.57 0.65 0.83

6 5 + Non-Bleed Thermostatic Expansion Valve 12.97 $714.72 $7.58 $1933.90 2,706 $1494.33 $39.08- $3467.31 4462 $378 0.83 $7,672 $7,140 $6,344 0.63 0.73 0.93

7 6 + More Efficient Condenser PSC Fan Motor (65.0%) 13.09 $721.02 $6.30 $1949.24 2.703 $1494.33 $31.47 $3475.04 4420 $375 0.87 $7,641 $7,114 $6,325 0.67 0.76 0.97

8 7 + Increase Evaporator Fin Density to 14 fpi 13.14 $722.48 $1.46 $1954.22 2.705 $1494.33 $31.47 $3480.02 4405 $373 0.91 $7,632 $7,107 $6,320 0.69 0.79 1.01

9 8 + Increase Evaporator Face Area to 7.50 sq.ft. 13.53 $739.70 $17.22 $1992.38 2.693 $1504.62 $31.47 $3528.47 4276 $362 1.21 $7,558 $7,048 $6,285 0.92 1.05 1.35

10 9 + Condenser Grooved Tubes 13.69 $756.52 $16.82 $2032.62 2.687 $1504.62 $31.47 $3568.71 4226 $358 1.47 $7,551 $7,047 $6,293 1.12 1.29 1.64

11 10 + Increase Condenser Face Area to 27.60 sq.ft. 13.95 $788.74 $32.22 $2106.45 2.671 $1535.49 $31.47 $3673.41 4148 $352 2.16 $7,583 $7,088 $6,348 1.65 1.89 2.41

12 11 + Increase Condenser Face Area to 36.50 sq.ft. 14.22 $850.40 $61.66 $2247.55 2.643 $1595.21 $31.47 $3874.23 4069 $345 3.44 $7,709 $7,224 $6,498 2.63 3.01 3.84

13 12 + Evaporator ECM Fan Motor 14.84 $1,030.66 $180.26 $2654.70 2.576 $1595.21 $47.09 $4297.00 3899 $330 5.78 $7,971 $7,506 $6,810 4.41 5.04 6.44

14 13 + Electronic Expansion Valve 15.04 $1,106.83 $76.17 $2833.01 2.560 $1595.21 $56.07 $4484.29 3847 $326 6.77 $8,110 $7,651 $6,964 5.16 5.90 7.54

15 14 + Condenser ECM Fan Motor 15.11 $1,179.53 $72.70 $3004.41 2.547 $1595.21 $63.68 $4663.30 3830 $325 7.79 $8,273 $7,816 $7,132 5.94 6.80 8.68

16 15 +Two-Speed Recip-Compressor System 16.76 $1,368.28 $188.75 $3427.38 2.505 $1595.21 $80.54 $5103.13 3452 $293 8.75 $8,356 $7,945 $7,328 6.67 7.64 9.75

17 15 + Variable-Speed Recip-Compressor System 17.67 $1,779.53 $600.00 $4353.71 2.447 $1595.21 $132.24 $6081.16 3275 $278 12.74 $9,168 $8,778 $8,193 9.71 11.12 14.20

18 15 +Two-Speed Scroll-Compressor System 17.02 $1,679.53 $500.00 $4169.30 2.482 $1595.21 $127.87 $5892.38 3400 $288 12.47 $9,096 $8,691 $8,084 9.50 10.88 13.89

19 IS+Variable-S Variable-SpeScroll-stem 19.62 $1,829.53 $650.00 $4526.06 2,474 $1595.21 $134.43 $6255.70 2949 $250 12.00 $9,035 $8,683 $8,157 9,15 10.47 13.37

Assumptions:

1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime = 15 years.

3 Baseline unit includes:

Evaporator: 6.00 sq.ft., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes

Condenser: 23.00 sq.ft., 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes

Compressor: Reciprocating, 10.49 EER (nominal); Accumulator

Evaporator Fan Motor: PSC, 58.5% efficient

Condenser Fan Motor: PSC, 55.0% efficient

Enhancement Devices: None

4 Non-Bleed Thermostatic Expansion Valve replaces the need for a Time Delay Relay.

5 Maximum Sensible Heat Ratio = 76.5%

6 Evaporator ECM Fan Motor is modulated, Cost of fan motor includes electronic modulating controls.

7 Condenser ECM Fan Motor is run at a single speed,

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of S-ton, Split System Central Air Conditioner 

Incr. Installed Annual Annual Cumul. Lifecycle Costs 

SEER Manufr Manufr Retail Mark Installation Maintenance Consumer Elec. Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost Cost use cost Period (1992$) 

BtuhlW (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWhlyr (1992$) (years) 4% 6% 10% 

0 Baseline 10.01 $666.00 - $1833.05 2.752 $1494.33 $46.69 $3374.07 5783 $490 NA $8,824 $8,134 $7,102 

I 0+ Backward Inclined Indoor Blower 10.29 $666.02 $0.02 $1832.80 2.752 $1494.33 $46.69 $3373.82 5625 $477 -0.02 $8,675 $8,005 $7,000 

2 1 + Evaporator Slit Fins 10.38 $666.23 $0.21 $1834.52 2.754 $1494.33 $46.69 $3375.54 5576 $473 0.08 $8,630 $7,966 $6,970 

3 2 + Scroll Compressor: 11.30 EER 11.88 $690.87 $24.64 $1881.00 2.723 $1494.33 $46.69 $3422.02 4871 $413 0.62 $8,013 $7,432 $6,563 

4 3 + Time Delay Relay 12.34 $697.37 $6.50 $1894.76 2.717 $1494.33 $46.69 $3435.78 4689 $397 0.67 $7,855 $7,296 $6,459 

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 12.65 $707.14 $9.77 $1916.73 2.711 $1494.33 $39.08 $3450.14 4573 $388 0.74 $7,760 $7,215 $6,398 

6 5 + Non-Bleed Thermostatic Expansion Valve 12.97 $714.72 $7.58 $1933.90 2.706 $1494.33 $39.08- $3467.31 4462 $378 0.83 $7,672 $7,140 $6,344 

7 6 + More Efficient Condenser PSC Fan Motor (65.0%) 13.09 $721.02 $6.30 $1949.24 2.703 $1494.33 $31.47 $3475.04 4420 $375 0.87 $7,641 $7,114 $6,325 

8 7 + Increase Evaporator Fin Density to 14 fpi 13.14 $722.48 $1.46 $1954.22 2.705 $1494.33 $31.47 $3480.02 4405 $373 0.91 $7,632 $7,107 $6,320 

9 8 + Increase Evaporator Face Area to 7.50 sq.ft. 13.53 $739.70 $17.22 $1992.38 2.693 $1504.62 $31.47 $3528.47 4276 $362 1.21 $7,558 $7,048 $6,285 

10 9 + Condenser Grooved Tubes 13.69 $756.52 $16.82 $2032.62 2.687 $1504.62 $31.47 $3568.71 4226 $358 1.47 $7,551 $7,047 $6,293 

II 10 + Increase Condenser Face Area to 27.60 sq.ft. 13.95 $788.74 $32.22 $2106.45 2.671 $1535.49 $31.47 $3673.41 4148 $352 2.16 $7,583 $7,088 $6,348 

12 II + Increase Condenser Face Area to 36.50 sq.ft. 14.22 $850.40 $61.66 $2247.55 2.643 $1595.21 $31.47 $3874.23 4069 $345 3.44 $7,709 $7,224 $6,498 

13 12 + Evaporator ECM Fan Motor 14.84 $1,030.66 $180.26 $2654.70 2.576 $1595.21 $47.09 $4297.00 3899 $330 5.78 $7,971 $7,506 $6,810 

14 13 + Electronic Expansion Valve 15.04 $1,106.83 $76.17 $2833.01 2.560 $1595.21 $56.07 $4484.29 3847 $326 6.77 $8,110 $7,651 $6,964 

15 14 + Condenser ECM Fatl Motor 15.11 $1,179.53 $72.70 $3004.41 2.547 $1595.21 $63.68 $4663.30 3830 $325 7.79 $8,273 $7,816 $7,132 

16 15 + Two-Speed Recip-Compressor System 16.76 $1,368.28 $188.75 $3427.38 2.505 $1595.21 $80.54 $5103.13 3452 $293 8.75 $8,356 $7,945 $7,328 

17 15 + Variable-Speed Recip-Compressor System 17.67 $1,779.53 $600.00 $4353.71 2.447 $1595.21 $132.24 $6081.16 3275 $278 12.74 $9,168 $8,778 $8,193 

18 15 + Two-Speed Scroll-Compressor System 17.02 $1,679.53 $500.00 $4169.30 2.482 $1595.21 $127.87 $5892.38 3400 $288 12.47 $9,096 $8,691 $8,084 

19 15 + Variah1e-Speed Scroll-Compressor System 19.62 $1,829.53 $650.00 $4526.06 2.474 $1595.21 $134.43 $6255.70 2949 $250 12.00 $9,035 $8,683 $8.157 

Ass!JmpriQo!\' 

1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment). 

2 Lifetime = 15 years. 

3 Baseline unit includes: 

Evaporator: 6.00 sq.fl., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes 

Condenser: 23.00 sq.fl., 20 finslinch. Slit Fins, 2 tube rows, Smooth Tubes 

Compressor: Reciprocating, 10.49 EER (nominal); Accumulator 

Evaporator Fan Motor: PSC, 58.5% efficient 

Condenser Fan Motor: PSC, 55.0% efficient 

Enhancement Devices: None 

4 Non-Bleed Thermostatic ExpanSion Valve replaces the need for a Time Delay Relay. 

5 Maximum Sensible Heat Ratio = 76.5% 

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

7 Condenser ECM Fan Motor is run at a singl~ speed. 

6/3/94 

Cumulative 

Cost of Conserved Energy 

(centsIkWh) 

4% 6% 10% 

NA NA NA 

-0.01 -0.02 -0.02 

0.06 0.07 0.09 

0.47 0.54 0.69 

0.51 0.58 0.74 

0.57 0.65 0.83 

0.63 0.73 0.93 

0.67 0.76 0.97 

0.69 0.79 1.01 

0.92 1.05 1.35 

1.12 1.29 1.64 

1.65 1.89 2.41 

2.63 3.01 3.84 

4.41 5.04 6.44 

5.16 5.90 7.54 

5.94 6.80 8.68 

6.67 7.64 9.75 

9.71 11.12 14.20 

9.50 10.88 13.89 

9.15 10.47 13.37 
6/3/94

Life Cycle Cost for 5-ton Split System

Central Air Conditioner

$8,800

$8,600

$8,400 -

$8,200

1-1

A $8,000

$7,800

$7,600

$7,400

$7,200

$7,000

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6/3/94 

Life Cycle Cost for 5-ton Split System 

Central Air Conditioner 

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6/3/94

Life Cycle Cost for 5-ton Split System

Central Air Conditioner

$9,400

$9,000

$8,600

$8,200

$7,800

$7,400

$7,000

$6,600

$6,200

4% discount rate

- - - - 6% discount rate

10% discount rate

A

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9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0

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EE-RM-93-801 COMMENT 0DD

$9,400 

$9,000 

$8,600 

$8,200 

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6/3/94 

Life Cycle Cost for 5-ton Split System 

Central Air Conditioner 

-0-- 4% discount rate 

- - -6 - - 6% discount rate 

- - - - +- - - - 10% discount rate 

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Life Cycle Costs and Payback Periods of 3-ton, Split System Central Heat Pump

6/3/94

Incr. Installed Annual Elec Use Annual Cumul. Lifecycle Costs Cumulative

SEER HSPF Manufr Manufr Retail Mark Installation Maintenance consumer Cooling Heating Energy Payback Co., of Conserved Energy

Level Design Option Cost Cost Cost Up Cost Cost cost cost Period (1992$) (cents/kWh)

Bluh/W Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr kWh/yr (1992$) (years) 4% 6% 10% 4% 6% 10%

0 Baseline 10.00 6.89 $677.00 - $1757.89 2.597 $902.53 $46.69 $2707.11 3651 8,132 $999 NA $13,812 $12,407 $10,304 NA NA NA

1 0 + Backward Inclined Indoor Blower 10.30 7.00 $677.00 $0.00 $1758.23 2,597 $902.53 $46.69 $2707.45 3544 8,011 $979 0.02 $13,597 $12,220 $10,157 0.03 0.03 0.04

2 1 + Indoor Coll Slit Fins 10.43 7.11 $677.03 $0.03 $1759.03 2.598 $902.53 $46.69 $2708.25 3500 7,889 $965 0.03 $13,441 $12,083 $10,050 0.07 0.08 0.10

3 2 + Increase Indoor Coil Fin Density to 14 fpi 10.17 7.13 $677.69 $0.66 $1761.97 2,600 $902.53 $46.69 $2711.19 3,186 7,858 $962 0.11 $13,402 $12,050 $10,024 0.22 0.25 0.33

1 1 1 More EfGcicnt Indoor PSC Fan Motor (68.5%) 10.72 7.22 .$684.89 $7.20 $1777.70 2.596 $902.53 $39.08 $2719.31 3406 7,760 $9.16 0,23 $13,242 $ 11,911 $9,918 0.45 0.51 0.65

5 4 + More Efficient Outdoor PSC Fan Motor (65,0% 10.83 7,32 $691.19 $6.30 $1791.83 2.592 $902.53 $31.47 $2725.83 3372 7,658 $935 0.29 $13,120 $11,805 $9,836 0.60 0.69 0.88

6 5 + Time Delay Relay 11.17 7.47 $697.69 $6.50 $1805.58 2.588 $902.53 $31.47 $2739.58 3268 7,506 $913 0.38 $12,893 $11,609 $9,686 0.76 0.87 1.11

7 6 + Reciprocating Compressor: 11.26 EER 11.69 7.68 $708.68 $10.99 $1828.07 2.580 $902.53 $31.47 $2762.07 3125 7,295 $883 0,48 $12,582 $11,340 $9,480 0.94 1.07 1.37

8 7 + Increase Indoor Coil Face Area to 4.97 sq.ft. 12.41 7.97 $722.05 $13.37 $1855.16 2.569 $912.27 $31.47 $2798.90 2941 7,037 $846 0.60 $12,202 $11,013 $9,232 1.16 1.33 1.70

9 8 + Demand Defrost 12.41 8.20 $733.55 $11.50 $1881.64 2.565 $912.27 $31.47 $282538 2941 6,832 $828 0.69 $12,036 $10,871 $9,126 1.50 1.72 2.19

10 9 + Outdoor Coil Grooved Tubes 12.73 8.24 $740.52 $6.97 $1899.33 2.565 $912.27 $31.47 $2843.07 2869 6,803 $820 0.76 $11,958 $10,805 $9,079 1.56 1.79 2.29

11 10+ Increase Indoor Coil Face Area to 6.39 sq.ft. 13.12 8.40 $755.60 $15.08 $1933.47 2.559 $922.01 $31.47 $2886.95 2782 6,674 $802 0.91 $11,799 $10,672 $8,984 1 .86 2.13 2.72 12 11 +Scroll Compressor: 11.50 EER 13.70 8.50 $774.58 $18.98 $1977.80 2.553 $922.01 $31.47 $2931.28 2665 6,591 $785 1.05 $11,654 $10,551 $8,899 2.04 2.34 2.99

13 12 + Non-Bleed Thermostatic Expansion Valves 14.04 8.73 $787.03 $12.45 $2008.24 2.552 $922.01 $31.47 $2961.72 2600 6,422 $765 1.09 $11,464 $ 10,389 $8,778 2.18 2.49 3.18 14 13 + Increase Outdoor Coil Face Area to 21.00 sq.ft. 14.78 9,06 $811.89 $24.86 $2064.03 2,542 $962.27 $31.47 $3057,77 2471 6,184 $734 1.32 $ 11,214 $10,183 $8,638 2.67 3.06 3.91 15 14 + Increase Indoor Coil Face Area to 7.50 sq.ft. 15.00 9.13 $822.19 $10.30 $2093.61 2.546 $969.88 $31.47 $3094.96 2434 6,139 $727 1.43 $11,174 $10,152 $8,622 2.87 3,28 4.19 16 15 + Increase Indoor Coil Tube Density to 4 rows 15.12 9.20 $844.58 $22.39 $2150.25 2.546 $969.88 $31.47 $3151.60 2416 6,092 $721 1.60 $11,169 $10,155 $8,636 3.24 3.70 4.73

17 16 + Increase Outdoor Coil Face Area to 30.00 sq.ft. 15.48 9.32 $890.19 $45.61 $2258.41 2.537 $1030.27 $31.47 $3320.15 2359 6,018 $710 2.12 $11,214 $10,216 $8,720 4.27 4.88 6.24 18 17 + Outdoor ECM Fan Motor 15.59 9.45 $962.89 $72.70 $2427.44 2.521 $1030.27 $39.08 $3496.79 2343 5,935 $702 2.66 $11,298 $10,311 $8,833 5.43 6,21 7.93 19 18+ Electronic Expansion Valve 15.79 9.50 $1,011.23 $48.34 $2545.80 2.518 $1030.27 $48.06 $3624.13 2313 5,904 $696 3.03 $11,368 $10,388 $8,921 6.16 7.06 9.01 20 19 + Indoor I'.CM Fan Motor 1636 9.56 $1,152.53 $141.30 $2858.54 2.480 $1030.27 $63.68 $3952.49 2232 5,865 $686 3.99 $11,583 $10,618 $9,173 7.89 9.04 11.54 21 20+Two-Speed Rccip-Compressor System 17.90 9.60 $1,332.79 $180.26 $3253.31 2.441 $1030.27 $77.62 $4361.20 2040 5,837 $668 4.99 $11,784 $10,845 $9,439 9.23 10.57 13.50 22 20 + Variable-Speed Recip-Compressor System 18.24 10.01 $1,744.04 $591.51 $4140.61 2.374 $1030.27 $123.47 $5294.35 2002 5,601 $644 7.30 $12,459 $11,553 $10,196 14.11 16.15 20.62 23 20 + Two-Speed Scroll-Compressor System 18.48 10.19 $1,644.04 $491.51 $3976.12 2.419 $1030.27 $119.10 $5125.49 1976 5,500 $634 6.62 $12,171 $11,280 $9,945 12.99 14.87 18.98 24 20+ Variable-Speed Scroll-Compressor System 20.83 11.01 $1,794.04 $641.51 $4327.81 2.412 $1030.27 $125.66 $5483.74 1753 5,089 $580 6.63 $11,932 $11,116 $9,895 13.15 15.06 19.23

Assumptions:

1 Electricity cost=0.085$/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0,082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime = 15 years.

3 Vaseline unit includes:

Indoor Coil: 3.55 sq.ft., 13 fins/inch, Wavy Fins, 3 tube rows, Groove Tubes

Outdoor Coil: 15.00 sq.ft., 20 fins/inch, Slit Fins, 1 tube row, Smooth Tubes

Compressor: Reciprocating, 10.80 EER (nominal); Accumulator

Indoor Fan Motor: PSC, 58.5% efficient

Outdoor Fan Motor: PSC, 55.0% efficient

Enhancement Devices: None

4 All Two-Speed and Variable-Speed Compressor Systems include an Accumulator.

5 Maximum Sensible Heat Ratio = 76.5%

6 Non-Bleed Thermostatic Expansion Valves replace the need for a Time Delay Relay and an Accumulator.

7 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

8 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of 3·ton, Split System Central Heat Pump 

Incr. Installed Annual Elec Use Annual Cumu!. 

SEER HSPF Manurr Manurr Retail Mark Installation Maintenance consumer Cooling Heating Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost cost cost Period 

BtuhiW BtuhlW (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr kWhlyr (1992$) (years) 

a Baseline 10.00 6.89 $677.00 - $1757.89 2.597 $902.53 $46.69 $2707.11 3651 8,132 S999 NA 

I o + Backward Inclined Indoor Blower 10.30 7.00 S677.00 $0.00 $1758.23 2.597 $902.53 $46.69 $2707.45 3544 8,011 $979 0.G2 

2 1 + Indoor Coil Slit Fins 10,43 7.11 S677.03 $0.03 $1759.03 2.598 S902.53 $46.69 $2708.25 3500 7,889 $965 0.03 

) 2 • Increase Indoor Coil Fin Densily 10 14 fpi 10.47 7.13 $077.69 $0.66 $1761.97 2.600 $902.53 $46.69 $2711.19 3,186 7,858 $962 0.11 

·1 \ I MOle" 1~llidl!lIt 11It!l>l)l' PSt:' Fun Motor (6H.YX,) 10.72 7.22 .$6H·I.H9 $7.20 $1777.70 2.596 $902.53 $39.08 $2719.31 )·106 7,760 $946 0.23 

5 4 + More Emcient Outdoor PSC Fan Molor (65.0% 10.83 7.32 $691.19 $6.30 $1791.83 2.592 $902.53 $31.47 $2725.83 3372 7,658 $935 0.29 

(, 5 + Time Delay Relay 11.17 7.47 $697.69 $6.50 $1805.58 2.588 S902.53 $31.47 $2739.58 3268 7,506 S913 0.38 

7 6 + Reciprocating Compressor: 11.26 EER 11.69 7.68 $708.68 $10.99 $1828.07 2.580 $902.53 $31.47 $2762.07 3125 7,295 $883 0,48 

8 7 + Increase Indoor Coil Face Area to 4.97 sq.ft. 12.41 7.97 $722.05 $13.37 $1855.16 2.569 S912.27 S31.47 $2798.90 2941 7,037 $846 0.60 

9 8 + Demand Defrost 12.41 8.20 $733.55 $11.50 $1881.64 2.565 $912.27 $31.47 $2825.38 2941 6,832 S828 0.69 

10 9 + Outdoor Coil Grooved Tubes 12.73 8.24 $740.52 $6.97 $1899.33 2.565 $912.27 $31.47 $2843.07 2869 6,803 $820 0.76 

II 10 + Increase Ind(xlf Coil Face Area to 6.39 s'l.ft. 13.12 8.40 $755.60 $15.08 $1933.47 2.559 $922.01 $31.47 $2886.95 2782 6,674 $802 0.91 

12 1 I + Scroll Compressor: 11.50 EER 13.70 8.50 $774.58 .$18.98 $1977.80 2.553 $922.01 $31.47 $2931.28 2665 6,591 $785 1.05 

13 12 + Non-Bleed Thennostalic Expansion Valves 14.04 8.73 $787.G3 $12.45 $2008.24 2.552 $922.01 $31.47 $2961.72 2600 6,422 $765 1.09 

14 13 + Increase Outdoor Coil Fllce Aren 1021.00 s'l.ft. 14.78 9.06 $811.89 $24.86 $2064.03 2.542 $962.27 $31.47 $3057.77 2471 6,184 $734 1.32 

15 14 + Incrense Indoor Coil Face Aren to 7.50 s'l.ft. 15.00 9.13 $822.19 $10.30 $2093.61 2.546 $969.88 $31.47 $3094.96 2434 6,139 $727 1.43 

16 15 + Increase Indoor Coil Tube Density 10 4 rows 15.12 9.20 $844.58 $22.39 $2150.25 2.546 $969.88 $31.47 $3151.60 2416 6,092 $721 1.60 

17 16 + Increase Outdoor Coil Face Area to 30.00 sq.ft. 15.48 9.32 $890.19 $45.61 $2258.41 2.537 S1030.27 $31.47 $3320.15 2359 6,018 $710 2.12 

18 17 + Outdoor ECM Fan Motor 15.59 9.45 $962.89 $72.70 $2427.44 2.521 $1030.27 $39.08 $3496.79 2343 5,935 $702 2.66 

19 18 + Electronic Expansion Valve 15.79 9.50 $1.011.23 $48.34 $2545.80 2.518 $1030.27 $48.06 $3624.13 2313 5,904 $696 3.03 

211 I!) + Indoor ECM Fan Motor 16.36 9.56 $1.152.53 $141.30 $2858.54 2.480 $1030.27 $63.68 $3952.49 2232 5,865 $686 3.99 

21 20 + Two·Speed Recip-Compressor Sys1em 17.90 9.60 $1,332.79 $180.26 $3253.31 2.441 $1030.27 $77.62 $4361.20 2040 5,837 $668 4.99 

22 20 + Vadable-Spced Recip-Compressor Syslem 18.24 10.01 $1,744.04 $591.51 $4140.61 2.374 $1030.27 $123.47 $5294.35 2002 5,601 $644 7.30 

23 20 + Two-Speed Scroll·Compressor Syslem 18.48 10.19 $1,644.04 $491.51 $3976.12 2.419 $1030.27 $119.10 $5125.49 1976 5,500 $634 6.62 

24 20 + Vadable·Speed Scroll·Compressor System 20.83 11.01 $1.794.04 $641.51 $4327.81 2.412 $1030.27 $125.66 $5483.74 1753 5.089 $580 6.63 

Assumptions: 

1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 S/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price end use factor for CAC is 1.0 (no adjustment). 

2 Lifetime = 15 years. 

3 Baseline unit includes: 

Indoor Coil: 3.55 sq.ft., !3 fins/inch, Wavy Fins, 3 lube rows, Groove Tubes 

Outdoor Coil: 15.00 sq.ft .• 20 fins/inch. Slit Fins. 1 lube row, Smoolh Tubes 

Compressor: Reciprocating, 10.80 EER (nominal); Accumulator 

Indoor Fan Motor: PSC, 58.5% efficient 

Ouldoor Fan Molor: PSC, 55.0% efficient 

Enhancement Devices: None 

4 All Two-Speed and Variable-Speed Compressor Systems include an Accumulator. 

5 Maximum Sensible Heat Ratio = 76.5% 

6 Non·Bleed Thennostatic Expansion Valves replace the need for a Time Delay Relay and an Accumulator. 

Evaporator ECM Fan Motor is modulaled. Cost of fan molor includes eleclronic modulating controls. 

Condenser ECM Fan Motor is run at a single speed. 

6/3/94 

Lifecycle Costs Cumulative 

Cost of Conserved Energy 

(1992$) (cents/kWb) 

4% 6% 10% 4% 6% 10% 

$13,812 S12,407 SI0,304 NA NA NA 

$13,597 $12,220 S10,157 0.03 0.03 0.04 

$13,441 $12,083 $10,050 0.07 0.08 0.10 

$13,402 $12,050 $10,024 0.22 0.25 0.33 

$13,242 $11,911 $9,918 0.45 0.51 0.65 

$13,120 $11,805 $9,836 0.60 0.69 0.88 

S12,893 $11,609 $9,686 0.76 0.87 1.11 

$12,582 $11,340 $9,480 0.94 1.07 1.37 

$12,202 $11,013 $9,232 1.16 1.33 1.70 

$12,036 $10,871 $9,126 1.50 1.72 2.19 

$11,958 $10,805 $9,079 1.56 1.79 2.29 

$11,799 $10,672 $8,984 1.86 2.13 2.72 

$11,654 $10,551 $8,899 2.04 2.34 2.99 

$11,464 $10,389 $8,778 2.18 2.49 3.18 

$11,214 $10,183 $8,638 2.67 3.06 3.91 

SII,174 $10,152 $8,622 2.87 3.28 4.19 

$11,169 $10,155 $8,636 3.24 3.70 4.73 

$11,214 $10,216 $8,720 4.27 4.88 6.24 

$11,298 $10,311 $8,833 5.43 6.21 7.93 

$11,368 $10,388 $8,921 6.16 7.06 9.01 

$11,583 $10,618 $9,173 7.89 9.04 11.54 

$11,784 $10,845 $9,439 9.23 10.57 13.50 

$12,459 $11,553 $10,196 14.11 16.15 20.62 

$12,171 $11,280 $9,945 12.99 14.87 18.98 

$11,932 $11,116 $9,895 13.15 15.06 19.23 
6/3/94

Life Cycle Cost for 3-ton Split System

Central Heat Pump

$12,500

o 6% discount rate

$12,000

$10,500

$10,000 i i I i , I 15

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0

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EE-RM-93-801 COMMENT 0DD

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9.0 10.0 11.0 12.0 

6/3/94 

Life Cycle Cost for 3-ton Split System 

Central Heat Pump 

I ~G-- 6% discount rate I 

10 

11 

12 20 

13 

18 19 

17 

15 

13.0 14.0 15.0 16.0 17.0 

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22 

23 

24 

21 

18.0 19.0 20.0 21.0 
6/3/94

Life Cycle Cost for 3-ton Split System

Central Heat Pump

$14,000

$13,500

$13,000

$12,500

$12,000

$11,500

$11,000

$10,500

$10,000

$9,500

$9,000

$8,500

A

10% discount rate

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4% discount rate

- - A - - 6% discount rate

EE-RM-93-801 COMMENT 0DD

$14,000 

$13,500 

$13,000 

$12,500 

$12,000 

~ 

fI't 

~ $11,500 ~ 

~ 

U --- $11,000 U 

~ 

$10,500 -

$10,000 

$9,500 

$9,000 

$8,500 

9.0 10.0 11.0 12.0 

6/3/94 

Life Cycle Cost for 3-ton Split System 

Central Heat Pump 

13.0 

---0- 4% discount rate 

- - -6 - - 6% discount rate 

- - - - +- - - - 10% discount rate 

14.0 15.0 

SEER 

16.0 17.0 

_-6 

- -+ 

18.0 19.0 20.0 21.0 
Life Cycle Costs and Payback Periods of 5-ton, Split Systeni Central Heat Pump

6/3/94

Incr, Installed Annual Elec Use Annual Cumul. Lifecycle Costs Cumulative

SEER HSPF Manufr Manufr Retail Mark Installation Maintenance Consumer Cooling Hearing Energy Payback Cost of Conserved Energy

Level Design Option Cost Cost Cost Up Cost Cost Cost cost Period (1992$) (cents/kWh)

Btuh/W Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr kWh/yr (1992$) (years) 4% 6% 10% 4% 6% 10%

0 Baseline 10.00 7.09 $934.00 - $2689.81 2.880 $1151.54 $46.69 $3898.04 5798 13,556 $1,640 NA $22,137 $19,830 $16,375 NA NA NA

1 0 + Backward Inclined Indoor Blower 10.30 7.21 $934.03 $0.03 $2690.15 2.880 $1161.54 $46.69 $3898.38 5629 13,328 $1,607 0.01 $21,764 $19,504 $16,120 0.02 0.02 0.03

2 1 + Indoor Coil Slit Fins 10.38 7.27 $934.25 $0.22 $2691.99 2.881 $1161.54 $46.69 $3900.22 5584 13,211 $1,593 0.05 $21,612 $19,372 $16,017 0.09 0.10 0.13

3 2 + Time Delay Relay 10.68 7.40 $940.75 $6.50 $2707.39 2.878 $1161.54 $46.69 $3915.62 5429 12,981 $1,560 0.22 $21,265 $19,071 $15,784 0.43 0.49 0.63

4 3 + Scroll Compressor: 11.30 EER 12.30 7.80 $965.13 $24.38 $2759.84 2.860 $1161.54 $46.69 $3968.07 4715 12,320 $1,444 0.36 $20,022 $17,992 $14,951 0.58 0.67 0.85

5 4 + More Efficient Outdoor PSC Fan Motor (65,0% 12.42 7.89 $971.43 $6.30 $2775.65 2.857 $1161.54 $39.08 $3976.27 4666 12,176 $1,428 0.37 $19,849 $17,841 $14,835 0.62 0.71 0.91

6 5 + Increase Indoor Coil Fin Density to 14 fpi 12.46 7.93 $973.16 $1.73 $2781.39 2.858 $1161.54 $39.08 $3982.01 4653 12,117 $1,421 0.38 $19,785 $17,787 $14,793 0.66 0.76 0.96

7 6 + More Efficient Indoor PSC Fan Motor (68.5%) 12.81 8.04 $982.92 $9.76 $2804.76 2.853 $1161.54 $31.47 $3997.77 4525 11,946 $1,396 0.41 $19,520 $17,557 $14,617 0.70 0.81 1.03

8 7 + Demand Defrost 12.81 8.29 $994.42 $11.50 $2831.93 2.848 $1161.54 $31.47 $4024.94 4525 11,598 $1,367 0.46 $19,219 $17,298 $14,419 0.90 1.03 1.31

9 8 + Non-Bleed Thermostatic Expansion Valves 13.13 8.53 $1,016.08 $21.66 $2882.25 2.837 $1161.54 $31.47 $4075.26 4415 11,266 $1,329 0.57 $18,853 $16,984 $14,185 1.15 1.32 1.68

10 9 + Increase Indoor Coil Face Area to 7.50 sq.ft. 13.51 8.63 $1,033.92 $17.84 $2930.38 2.834 $1171.83 $31.47 $4133.68 4292 11,137 $1,308 0.71 $18,674 $16,835 $14,081 1.41 1.61 2.06

It 10 + Outdoor Coil Grooved Tubes 13.71 8.66 $1,048.28 $14.36 $2973.02 2.836 $1171.83 $31.47 $4176.32 4229 11,102 $1,299 0.82 $18,624 $16,797 $14,060 1.60 1.83 2.33 12 11 + Increase Outdoor Coil Face Area to 27.30 sq.ft 14.17 8.89 $1,106.40 $58.12 $3123.05 2.823 $1224.17 $31.47 $4378.69 4093 10,807 $1,263 1.27 $18,420 $16,645 $13,985 2.54 2.90 3.71 13 12 + Electronic Expansion Valve 14.37 8.94 $1,154.74 $48.34 $3255.14 2.819 $1224.17 $40.45 $4519.76 4036 10,747 $1,253 1.60 $18,451 $16,689 $14,050 3.17 3.63 4.64

14 13 + Outdoor ECM Fan Motor 14.44 9.05 $1,227.44 $72.70 $3443.89 2.806 $1224.17 $48.06 $4716.12 4014 10,616 $1,240 2.04 $18,504 $16,760 $14,148 4.13 4.72 6.03 15 14 + Increase Outdoor Coil Face Area to 36.50 sq.ft 14.63 9.13 $1,295.30 $67.86 $3630.06 2.802 $1285.90 $48.06 $4964.02 3963 10,527 $1,228 2.59 $18,619 $16,892 $14,306 5.23 5.98 7.64

16 15 + Indoor ECM Fan Motor 15.35 9.22 $1,475.55 $180.25 $4080.04 2.765 $1285.90 $63.68 $5429.62 3778 10,419 $1,203 3.50 $18,808 $17,116 $14,582 6.82 7.81 9.97

17 16 + Two-Speed Recip-Compressor System 16.98 9.23 $1,664.30 $188.75 $4576.41 2.750 $1285.90 $80.83 $5943.14 3415 10,409 $1,172 4.36 $18,970 $17,323 $14,855 7.72 8.84 11.28

18 16 + Variable-Speed Recip-Compressor System 17.16 9.78 $2,075.55 $600.00 $5654.91 2.725 $1285.90 $133.11 $7073.92 3378 9,831 $1,120 6.10 $19,522 $17,947 $15,589 11.80 13.51 17.26 19 16+Two-Speed Scroll-Compressor System 17.30 10.02 $1,975.55 $500.00 $5553.75 2.811 $1285.90 $128.74 $6968.39 3352 9,586 $1,097 5.65 $19,161 $17,619 $15,309 11.29 12.93 16.50 20 16 + Variable-Speed Scroll-Compressor Sstem 19.16 10.31 $2,125.55 $650.00 $6047.76 2.845 $1285.90 $135.29 $7468.95 3026 9,322 $1,047 6.01 $19,105 $17,633 $15,429 11.59 13.26 16.94

Assumptions:

I Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0,082 $ /kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992 . The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime= 15 years.

3 Baseline unit includes:

Indoor Coil: 6.00 sq.ft., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes

Outdoor Coil: 19.5 sq.ft., 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes

Compressor: Reciprocating, 10.49 EER (nominal); Accumulator

Indoor Fan Motor: PSC, 58.5% efficient

Outdoor Fan Motor: PSC, 55.0% efficient

Fnhancenarst Devices: None.

4 Maximum Sensible Heat Ratio = 76.5%

5 Non-Bleed Thermostatic Expansion Valves replace the need for a Time Delay Relay; Accumulator still required due to excess refrigerant.

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

7 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Cost~ and Payback Periods of 5-ton, Split System Central Heat Pump 

Incl'. Installed Annual Elec Use Annual Cumu!. 

SEER HSpr Manurr Manurr Retail Mark Installation Maintenance Consumer Cooling Heating Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost Cost cost Period 

BtuhlW BtuhlW (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr kWhlyr (1992$) (years) 

0 Baseline 10.00 7.09 $934.00 $2689.81 2.880 S11·51.54 $46.69 $3898.04 5798 13,556 $1,640 NA 

I o + Backward I ndincd I ndoor Blower 10.30 7.21 $934.03 $0.03 $2690.15 2.880 $1161.54 $46.69 $3898.38 5629 13,328 $1,607 0.01 

2 1 + Indoor Coil Slit Fins 10.38 7.27 $934.25 $0.22 $2691.99 2.881 $1161.54 $46.69 $3900.22 5584 13,211 $1,593 0.05 

3 2 + Time Delay Relay 10.68 7.40 S940,75 S6.50 $2707.39 2.878 S1161.54 $46.69 $3915.62 5429 12,981 $1,560 0.22 

• 3 + Scroll Compressor: I I .30 EER 12.30 7.80 $965.13 $24.38 $2759.84 2.860 $1161.54 $46.69 $3968.07 4715 12,320 $1,444 0.36 

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 12.42 7.89 $971.43 $6.30 $2775.65 2.857 $1161.54 $39.08 $3976.27 4666 12,176 $1,428 0.37 

6 5 + Increase Indoor Coil Fin Density to 14 fpi 12.46 7.93 $973.16 $1.73 S2781.39 2.858 $1161.54 $39.08 $3982.01 4653 12,117 $1,421 0.38 

7 6 + More Efficient Indoor PSC Fan Motor (68.5%) 12.81 8.04 $982.92 $9.76 $2804.76 2.853 $1161.54 $31.47 $3997.77 4525 11,946 $1,396 0.41 

8 7 + Demand Defrost 12.81 8.29 $994.42 $11.50 $2831.93 2.848 $1161.54 $31.47 $4024.94 4525 11,598 $1,367 0.46 

9 8 + Non-Bleed Thennostatic Expansion Valves 13.13 8.53 $1,016.08 $21.66 $2882.25 2.837 $1161.54 $31.47 $40]5.26 4415 11,266 $1,329 0.57 

10 9 + Increase Indoor Coil Face Area to 7.50 sq.ft. 13.51 8.63 $1,033.92 $17.84 $2930.38 2.834 $1171.83 $31.47 $4133.68 4292 11,137 $1,308 0.71 

11 10+ Outdoor Coil Grooved Tubes 13.71 8.66 $1,048.28 $14.36 $2973.02 2.836 $1171.83 $31.47 $4176.32 4229 11,102 $1,299 0.82 

12 11 + Increase Outdoor Coil Face Area to 27.30 sq.ft 14.17 8.89 $1,106.40 $58.12 $3123.05 2.823 $1224.17 $31.47 $4378.69 4093 10,807 $1,263 1.27 

13 12 + Electronic Expansion Valve 14.37 8.94 $1,154.74 $48.34 $3255.14 2.819 $1224.17 $40.45 $4519.76 4036 10,747 $1,253 1.60 

I. 13 + Outdoor ECM Fan Motor 14.44 9.05 $1,227.44 $72.70 $3443.89 2.806 $1224.17 $48.06 $4716.12 4014 10,616 $1,240 2.04 

15 14 + Increase Outdoor Coil Face Area to 36.50 sq.ft 14.63 9.13 $1,295.30 $67.86 $3630.06 2.802 $1285.90 $48.06 $4964.02 3963 10,527 $1,228 2.59 

16 15 + Indoor ECM Fan Motor 15.35 9.22 $1,475.55 $180.25 $4080.04 2.765 $1285.90 $63.68 $5429.62 3778 10,419 $1,203 3.50 

17 16 + Two-Speed Recip-Compressor System 16.98 9.23 $1,664.30 $188.75 $4576.41 2.750 $1285.90 $80.83 $5943.14 3415 10,409 $1,172 4.36 

18 16 + Variable-Speed Recip-Compressor System 17.16 9.78 $2,075.55 $600.00 $5654.91 2.725 $1285.90 $133.11 $7073.92 3378 9,831 $1,120 6.10 

19 16 + Two-Speed Scroll-Compressor System 17.30 10.02 $1,975.55 $500.00 $5553.75 2.811 $1285.90 $128.74 $6968.39 3352 9,586 $1,097 5.65 

20 16 + Variable-Speed Scroll-Compressor System 19.16 10.31 $2.125.55 $650.00 $6047.76 2.845 $1285.90 $135.29 $7468.95 3026 9,322 S1,047 6.01 

i\ 'isumptions: 

1 Electricity cost; 0.085 S/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpOlated value for 1999 is 0.082 S/kWh (1 991S) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment). 

Lifetime; 15 years. 

Baseline unit includes: 

Indoor Coil: 6.00 sq.ft., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes 

Outdoor Coil: 19.5 sq.ft.. 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes 

Compressor: Reciprocating. 10.49 EER (nominal); Accumulator 

Indoor Fan Motor: PSC, 58.5% efficient 

Outdoor Fan Motor: PSC, 55.0% efficient 

11nhnnCcIHeflt Devices: None 

Maximum Sensible Heat Ratio; 76.5% 

Non-Bleed Thennostatic Expansion Valves replace the need [or a Time Delay Relay; Accumulator still required due to excess refrigerant. 

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

Condenser ECM Fan Motor is run at a single speed. 

6/3/94 

Lifecycle Costs Cumulative 

Cost of Conserved Energy 

(1992$) (centslkWh) 

4% 6% 10% 4% 6% 10% 

S22,137 S19,830 S16,375 NA NA NA 

$21,764 $19,504 $16,120 0.02 0.02 0.03 

$21,612 $19,372 $16,017 0.09 0.10 0.13 

$21,265 $19,071 $15,784 0.43 0.49 0.63 

$20,022 $17,992 $14,951 0.58 0.67 0.85 

$19,849 $17,841 $14,835 0.62 0.71 0.91 

$19,785 $17,787 $14,793 0.66 0.76 0.96 

$19,520 $17,557 $14,617 0.70 0.81 1.03 

$19,219 $17,298 $14,419 0.90 1.03 1.31 

$18,853 $16,984 $14,185 1.15 1.32 1.68 

$18,674 $16,835 .$14,081 1.41 1.61 2.06 

$18,624 $16,797 $14,060 1.60 1.83 2.33 

$18,420 $16,645 $13,985 2.54 2.90 3.71 

$18,451 $16,689 $14,050 3.17 3.63 4.64 

$18,504 $16,760 $14,148 4.13 4.72 6.03 

$18,619 $16,892 $14,306 5.23 5.98 7.64 

$18,808 $17,116 $14,582 6.82 7.81 9.97 

$18,970 $17,323 $14,855 7.72 8.84 11.28 

$19,522 $17,947 $15,589 11.80 13.51 17.26 

$19,161 $17.619 $15,309 11.29 12.93 16.50 

$19,105 $17,633 $15,429 11.59 13.26 16.94 
6/3/94

Life Cycle Cost for 5-ton Split System

Central Heat Pump

$20,000

$19,500

$19,000

U

$18,000

$17,500

$17,000

$16,500 1 ' i

® 6% discount rate

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0

SEER

EE-RM-93-801 COMMENT 0DD

$20,000 o 

$19,500 --

3 

$19,000--

6/3/94 

Life Cycle Cost for 5-ton Split System 

Central Heat Pump 

l-III-,- 6% discount rate I 

--~-. --------"--- .. ----~-
6/3/94

Life Cycle Cost for 5-ton Split System

Central Heat Pump

$22,500

$21,500

$20,500

$19,500

$18,500

$17,500

$16,500

$15,500

$14,500

$13,500 ; i I i i I i

4% discount rate

- - A - - 6% discount rate

10% discount rate

I-I

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0

SEER

EE-RM-93-801 COMMENT 0DD

$22,500 

$21,500 

$20,500 

$19,500 

,-.., 

fI'T 

~ $18,500 

Q\ 

...-I 

'-" 

U 

U $17,500 ~ 

$16,500 

$15,500 

$14,500 

$13,500 

9.0 10.0 11.0 

6/3/94 

Life Cycle Cost for 5-ton Split System 

Central Heat Pump 

12.0 13.0 14.0 15.0 16.0 

SEER 

-0- 4% discount rate 

- - -6 - - 6% discount rate 

- - - -+- - - - 10% discount rate 

- - -+ 

17.0 18.0 19.0 20.0 
6/3/94

Life Cycle Costs and Payback Periods of 3-ton , Single Package System Central Air Conditioner

Level Design Option

SEER Manufr

Cost

Incr.

Manufr

Cost

Retail

Cost

Mark

Up

Installed

Installation Maintenance Consumer

Cost Cost Cost

Annual

Elec.

use

Annual

Energy

cost

Cumul.

Payback

Period

Lifecycle Costs

(1992$)

Cumulative

Cost of Conserved Energy

(cents/kWh)

Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr (1992$) (years) 4% 6% 10% 4% 6% 10%

0 Baseline 9.70 $474.00 - $919.59 1.940 $1968.37 $46.69 $2934.65 3533 $299 NA $6,264 $5,843 $5,213 NA NA NA

1 0+ Backward Inclined Indoor Blower 9.97 $474.04 $0.04 $919.49 1.940 $1968.37 $46.69 $2934.55 3440 $292 -0.01 $6,177 $5,767 $5,152 -0.01 -0.01 -0.01

2 1 + Evaporator Slit Fins 10.09 $474.13 $0.09 $920.33 1.941 $1968.37 $46.69 $2935.39 3399 $288 0.06 $6,138 $5,733 $5,126 0.05 0.06 0.07

3 2 + Reciprocating Compressor: 10.91 EER 11.00 $481,51 $7.38 $928.60 1.929 $1968.37 $46.69 $2943.66 3118 $264 0.26 $5,882 $5,511 $4,954 0.20 0.22 0.29

4 3 + More Efficient Condenser PSC Fan Motor (65.0%) 11.12 $486.46 $4.95 $937.13 1.926 $1968.37 $39.08 $2944.58 3083 $261 0.26 $5,850 $5,482 $4,932 0.20 0.23 0.29

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 11.38 $493.68 $7.22 $948.64 1.922 $1968.37 $31.47 $2948.48 3013 $255 0.31 $5,787 $5,428 $4,891 0.24 0.27 0.35

6 5 + Time Delay Relay 11.81 $500.18 $6.50 $958.36 1.916 $1968.37 $31.47 $2958.20 2902 $246 0.44 $5,693 $5,348 $4,829 0.34 0.38 0.49

7 6 + Condenser Grooved Tubes 12.25 $506.13 $5.95 $967.35 1.911 $1968.37 $31.47 $2967.19 2800 $237 0.52 $5,606 $5,272 $4,772 0.40 0.46 0.58

8 7 + Increase Evaporator Fin Density to 14 fpi 12.30 $506.88 $0.75 $969.71 1.913 $1968.37 $31.47 $2969.55 2788 $236 0.55 $5,597 $5,265 $4,767 0.42 0.48 0.62

9 8 + Scroll Compressor: 11.50 EER / Non-Bleed TXV 13.11 $543.29 $36.41 $1025.15 1.887 $1968.37 $31.47 $3024.99 2616 $222 1.16 $5,490 $5,179 $4,712 0.89 1.01 1.30

10 9 + Increase Evaporator Face Area to 6.60 sq.ft. 13.97 $565.51 $22.22 $1062.56 1.879 $1985.35 $31.47 $3079.38 2455 $208 1.58 $5,393 $5,100 $4,662 1.21 1.38 1.76 11 10 + Increase Condenser Face Area to 18.03 sq.ft. 14.74 $586.24 $20.73 $1104.49 1.884 $2019.91 $31.47 $3155.87 2327 $197 2.16 $5,349 $5,071 $4,656 1 .65 1.89 2.41

12 11 + Increase Evaporator Face Area to 7.50 sq.ft. 14.91 $594.35 $9.11 $1131.44 .904 $2026.08 $31.47 $3188.99 2299 $195 2.43 $5,356 $5,082 $4,671 1.85 2.12 2.71

13 12 + Increase Condenser Face Area to 28.33 sq.ft. 15.35 $635.95 $41.60 $1220.67 1.919 $2095.19 $31.47 $3347.33 2234 $189 3.75 $5,453 $5,187 $4,788 2.86 3.27 4.18 14 13 + Evaporator ECM Fan Motor 15,91 $777.26 $141.31 $1469,40 1.890 $2095.19 $47.09 $3611,08 2155 $183 5.80 $5,643 $5,386 $5,001 4.42 5.06 6,46 15 14+ Electronic Expansion Valve 16.10 $853.43 $76.17 $1618.02 1.896 $2095.19 $56.07 $3769.28 2129 $180 7.01 $5,776 $5,522 $5,142 5.35 6.12 7.82 16 15 + Condenser ECM Fan Motor 16.25 $919.98 $66.55 $1751.92 1.904 $2095.19 $63.68 $3910.79 2109 $179 8.09 $5,899 $5,647 $5,271 6.17 7.06 9.01 17 l6+Two-Speed )2ecip-Compressor System 17,66 $1,1(x).67 $180.69 $2079.22 1,889 $2095.19 $76.66 $4251.07 1942 $165 9,76 $6,081 $5,849 $5,503 7.44 8.52 10.87 18 16 + Variable-Speed Recip-Compressor System 18.03 $1,511.92 $591.94 $2814.41 1.861 $2095.19 $120.59 $5030.19 1902 $161 15.16 $6,823 $6,596 $6,256 11 .55 13.23 16.89 19 16 +Two-Spced Scroll-Compressor System 18.35 $1,411.92 $491.94 $2753.84 1,950 $2095.19 $116.22 $4965.25 1869 $158 14.40 $6,727 $6,504 $6,170 10.97 12.56 16.04 20 16 + Variable-Speed Scroll-Compressor System 20.55 $1,561.92 $641.94 $3092.61 1.980 $2095.19 $122.78 $5310.58 1668 $141 15.03 $6,883 $6,684 $6,386 11.46 13.12 16.75

Assumptions

1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime= 15 years.

3 Baseline unit includes:

Evaporator: 4.13 sq.ft., 13 fins/inch, Wavy Fins, 3 tube rows, Groove Tubes

Condenser: 12.88 sq.ft., 20 fins/inch, Slit Fins, 1 tube row, Smooth Tubes

Compressor: Reciprocating, 10.20 EER (nominal)

Evaporator Fan Motor: PSC, 58.5% efficient

Condenser Fan Motor: PSC, 55.0% efficient

Enhancement Devices: None

4 Non-Bleed Thermostatic Expansion Valve replaces the need for a Time Delay Relay

5 Maximum Sensible Heat Ratio = 76.5%

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

7 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of 3·ton, Single Package System Central Air Conditioner 

Incr. Installed Annual Annual Cumul. Lifecycle Costs 

SEER Manurr Manurr Retail Mark Installation Maintenance Consumer Elec. Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost Cost use cost Period (1992$) 

BtuhlW (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr (1992$) (years) 4% 6% 10% 

0 Baseline 9.70 $474.00 . $919.59 1.940 $1968.37 $46.69 $2934.65 3533 $299 NA $6.264 $5.843 $5.213 

I 0+ Backward Inclined Indoor Blower 9.97 $474.04 $0.04 $919.49 1.940 $1968.37 $46.69 $2934.55 3440 $292 -om $6.177 $5.767 $5.152 

2 I + Evaporator Slit Fins 10.09 $474.13 $0.09 $920.33 1.941 $1968.37 $46.69 $2935.39 3399 $288 0.06 $6.138 $5.733 $5.126 

3 2 + Reciprocating Compressor: 10.91 EER 11.00 $481.51 $7.38 $928.60 1.929 $1968.37 $46.69 $2943.66 3118 $264 0.26 $5.882 $5.511 $4.954 

4 3 + More Efficient Condenser PSC Fan Motor (65.0%) 11.12 $486.46 $4.95 $937.13 1.926 $1968.37 $39.08 $2944.58 3083 $261 0.26 $5.850 $5,482 $4.932 

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 11.38 $493.68 $7.22 $948.64 1.922 $1968.37 $31.47 $2948.48 3013 $255 0.31 $5.787 $5,428 $4.891 

6 5 + Time Delay Relay 11.81 $500.18 $6.50 $958.36 1.916 $1968.37 $31.47 - $2958.20 2902 $246 0.44 $5.693 $5.348 $4.829 

7 6 + Condenser Grooved Tubes 12.25 $506.13 $5.95 $967.35 1.911 $1968.37 $31.47 $2967.19 2800 $237 052 $5.606 $5.272 $4.772 

8 7 + Increase Evaporator Fin Density to 14 fpi 12.30 $506.88 $0.75 $969.71 1.913 $1968.37 $31.47 $2969.55 2788 $236 0.55 $5.597 $5.265 $4.767 

9 8 + Scroll Compressor: 11.50 EER / Non-Bleed TXV 13.11 $543.29 $36.41 $1025.15 1.887 $1968.37 $31.47 $3024.99 2616 $222 1.16 $5,490 $5.179 $4.712 

10 9 + Increase Evaporator Face Area to 6.60 sq.ft. 13.97 $565.51 $22.22 $1062.56 1.879 $1985.35 $31.47 $3079.38 2455 $208 1.58 $5.393 $5.100 $4.662 

II 10 + Increase Condenser Face Area to 18.03 sq.ft. 14.74 $586.24 $20.73 $1104.49 1.884 $2019.91 $31.47 $3155.87 2327 $197 2.16 $5.349 $5.071 $4.656 

12 II + Increase Evaporator Face Area to 7.50 sq.fl. 14.91 $594.35 $8.11 $1131.44 1.904 $2026.08 $31.47 $3188.99 2299 $195 2.43 $5.356 $5.082 $4.671 

13 12 + Increase Condenser Face Area to 28.33 sq.ft. 15.35 $635.95 $41.60 $1220.67 1.919 $2095.19 $31.47 $3347.33 2234 $189 3.75 $5,453 $5.187 $4.788 

1·1 I] ... Evaporalor EeM riln MOlor 15.91 $777.20 $141J1 $1409.40 I.H90 $2095.19 $47.09 $]611.6R 2155 $18] 5.80 $5.643 $5.386 $5.001 

15 14 + Electronic Expansion Valve 16.10 $853.43 $76.17 $1618.02 1.896 $2095.19 $56.07 $3769.28 2129 $180 7.01 $5.776 $5.522 $5.142 

16 15 + Condenser ECM Fan Motor 16.25 $919.98 $66.55 $1751.92 1.904 $2095.19 $63.68 $3910.79 2109 $179 8.09 $5.899 $5.647 $5.271 

17 16 + Two-Speed Recip-Compressor System 17.66 $1.100.67 $180.69 $2079.22 1.889 $2095.19 $76.66 $4251.07 1942 $165 9.76 $6.081 $5.849 $5.503 

18 16 + Variable-Speed Recip-Compressor System 18.03 $1.511.92 $591.94 $2814.41 1.861 $2095.19 $120.59 $S030.19 1902 $161 15.16 $6.823 $6.596 $6.256 

19 16 + Two-Speed Scroll-Compressor System I~U5 $1,411.92 $491.94 $275].84 1.950 $209S.19 $116.22 $4965.25 1869 $IS8 14.40 $6.727 $6.504 $6.170 

20 16 + Variable-Sneed Scroll-Compressor System 20.S5 $1.561.92 $641.94 $3092.61 1.980 $2095.19 $122.78 $5310.58 1668 $141 15.03 $6.883 $6.684 $6.386 

AssumptiQns' 

1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993. inflated 

to 1992 dollars). The interpolatcd valuc for 1999 is 0.082 $/kWh (1991 $) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price end use factor for CAC is 1.0 (no adjustmcnt). 

2 Lifetimc = IS years. 

3 Baseline unit includes: 

Evaporator: 4.13 sq.ft.. 13 fins/inch. Wavy Fins. 3 tube rows. Groove Tubes 

Condenser: 12.88 sq.ft .• 20 fins/inch. Slit Fins. 1 tube row. Smooth Tubes 

Compressor: Reciprocating. 10.20 EER (nominal) 

Evaporator Fan Motor: PSC. 58.5% efficient 

Condenser Fan Motor: PSC. 55.0% efficient 

Enhancement Devices: None 

4 Non-Bleed Thermostatic Expansion Valve replaces the need for a Timc Delay Relay 

5 Maximum Sensible Heat Ratio = 76.5% 

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

7 Condenser ECM Fan Motor is run at a single speed. 

6/3/94 

Cumulative 

Cost of Conserved Energy 

(cents/kWh) 

4% 6% 10% 

NA NA NA 

-0.01 -om -0.01 

0.05 0.06 . 0.07 

0.20 0.22 0.29 

0.20 0.23 0.29 

0.24 0.27 0.35 

0.34 0.38 0.49 

0.40 0.46 0.58 

0.42 0.48 0.62 

0.89 1.01 1.30 

1.21 1.38 1.76 

1.65 1.89 2.41 

1.85 2.12 2.71 

2.86 3.27 4.18 

4.42 5.06 6.46 

5.35 6.12 7.82 

6.17 7.06 9.01 

7.44 8.52 10.87 

11.55 13.23 16.89 

10.97 12.56 16.04 

11.46 13.12 16.75 
6/3/94

Life Cycle Cost for 3-ton Single Package System

Central Air Conditioner

$7,000

r1

$6,600

$6,200

$5,400

$5,000 1

6% discount rate

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0

SEER

EE-RM-93-801 COMMENT 0DD

$7,000 

6/3/94 

Life Cycle Cost for 3-ton Single Package System 

Central Air Conditioner 

$6,600 -- [ -0-- 6% discount rate I 

18 

,-., 

fA 

N 

0'1 

0'1 

,-; 

'-' 

$6,200 

~ 0 

~ $5,800 1 

$5,400 

$5,000 

9.0 10.0 

3 

5 

11.0 

6 J

14 

9 

10 

12.0 13.0 14.0 15.0 16.0 17.0 18.0 

SEER 

20 

19.0 20.0 21.0 
6/3/94

Life Cycle Cost for 3-ton Single Package System

Central Air Conditioner

$7,000

$6,600

$6,200

N

CT

`-^, $5,800 A

N

N

N

$5,400

b

- 4% discount rate

6% discount rate

10% discount rate

A

$5,000

$4,600

9.0 10.0 11,0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0

SEER

EE-RM-93-801 COMMENT 0DD

$7,000 

$6,600 

$6,200 

,-., 

~ 0\ 

0\ 

C $5,800 

U 

~ 

$5,400 

$5,000 

$4,600 

9.0 10.0 11.0 

6/3/94 

Life Cycle Cost for 3-ton Single Package System 

Central Air Conditioner 

-----D----- 4% discount rate 

- - -6 - - 6% discount rate 

- - - - +- - - - 10% discount rate 

12.0 13.0 14.0 15.0 

SEER 

, 

,+ 

16.0 17.0 18.0 19.0 20.0 21.0 
8/3/94

Life Cycle Costs and Payback Periods of 5-ton, Single Package System Central Air Conditioner

Level Design Option

SEER Manufr

Cost

Incr.

Manufr

Cost

Retail

Cost

Mark

Up

Installed

Installation Maintenance Consumer

Cost Cost Cost

Annual

Elec.

use

Annual

Energy

cost

Cumul.

Payback

Period

Lifecycle Costs

(1992$)

Cumulative

Cost of Conserved Energy

(cents/kWh)

Btuh/W (1992$) 1992$) 1992$) (1992$) 1992$) (1992$) kWh/yr (1992$) (years) 4% 6% 10% 4% 6% 10%

0 Baseline 9.71 $666.00 - $1471.81 2.210 $2221.22 $46.69 $3739.72 5962 $505 NA $9,358 $8,647 $7,583 NA NA NA

1 0 + Backward Inclined Indoor Blower 9.98 $666.02 $0.02 $1473.42 2.212 $2221.22 $46.69 $3741.33 5799 $492 0.12 $9,206 $8,515 $7,480 0.09 0.10 0.13

2 1 +Evaporator Slit Fins 10.07 $666.23 $0.21 $1475.37 2.215 $2221.22 $46.69 $3743.28 5748 $487 0.20 $9,161 $8,475 $7,449 0.15 0.17 0.22

3 2 + Scroll Compressor: 11.30 EER 11.52 $690.87 $24.64 $1520.81 2.201 $2221.22 $46.69 $3788.72 5022 $426 0.62 $8,521 $7,923 $7,026 0.47 0.54 0.69

4 3 + Time Delay Relay 11.97 $697.37 $6.50 $1533.96 2.200 $2221.22 $46.69 $3801.87 4834 $410 0.65 $8,357 $7,781 $6,918 0.50 0.57 0.72

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 12.27 $707.14 $9.77 $1552.93 2.196 $2221.22 $39.08 $3813.23 4714 $400 0.70 $8,256 $7,694 $6,853 0.53 0.61 0.77

6 5 + Non-Bleed Thermostatic Expansion Valve 12.58 $714.72 $7.58 $1568.00 2.194 $2221.22 $39.08 $3828.30 4599 $390 0.77 $8,163 $7,615 $6,794 0.58 0.67 0.85

7 6 + More Efficient Condenser PSC Fan Motor (65.0%) 12.70 $721.02 $6.30 $1580.80 2.192 $2221.22 $31.47 $3833.49 4557 $386 0.79 $8,128 $7,585 $6,771 0.60 0.69 0.88

8 7 + Increase Evaporator Fin Density to 14 fpi 12.74 $722.48 $1.46 $1584.97 2,194 $2221.22 $31.47 $3837.66 4542 $385 0.81 $8,118 $7,576 $6,766 0.62 0.71 0.91

9 8 + Increase Evaporator Face Area to 7.50 sq.ft. 13.13 $739.70 $17.22 $1624.70 2.196 $2231.51 $31.47 $3887.68 4408 $374 1.12 $8,042 $7,516 $6,729 0.86 0.98 1.25

10 9 + Condenser Grooved Tubes 13.28 $756.52 $16.82 $1665.18 2.201 $2231.51 $31.47 $3928.16 4356 $369 1.38 $8,034 $7,514 $6,737 1.06 1.21 1.54

11 10 + Increase Condenser Face Area to 27.60 sq.ft. 13.53 $788.74 $32.22 $1742.58 2.209 $2262.38 $31.47 $4036.43 4277 $362 2.08 $8,067 $7,557 $6,793 1.58 1.81 2.31

12 11 +Increase Condenser Face Area to 36.50 sq.ft. 13.79 $850.40 $61.66 $1892.47 2.225 $2322.10 $31.47 $4246.04 4195 $356 3.38 $8,199 $7,700 $6,951 2.58 2.95 3.77

13 12 + Evaporator ECM Fan Motor 14.40 $1,030.66 $180.26 $2258.21 2.191 $2322.10 $47.09 $4627.40 4019 $341 5.39 $8,415 $7,936 $7,219 4.11 4.71 6.01

14 13 + Electronic Expansion Valve 14.59 $1,106.83 $76.17 $2440.06 2.205 $2322.10 $56.07 $4818.23 3966 $336 6.38 $8,556 $8,083 $7,375 4.86 5.56 7.10

15 14 + Condenser ECM Fan Motor 14.66 $1,179.53 $72.70 $2615.96 2.218 $2322.10 $63.68 $5001.74 3947 $335 7.39 $8,721 $8,251 $7,546 5.63 6.45 8.24

16 15 + Two-Speed Recip-Compressor System 16.27 $1,368.28 $188.75 $3032.98 2.217 $2322.10 $80.54 $5435.62 3557 $302 8.32 $8,788 $8,364 $7,729 6.34 7.26 9.27

17 15 + Variable-Speed Recip-Compressor System 17.14 $1,779.53 $600.00 $3928.03 2.207 $2322.10 $132.24 $6382.37 3376 $286 12.06 $9,564 $9,161 $8,559 9.19 10.52 13.44

18 15 + Two-Speed Scroll-Compressor System 16.52 $1,679.53 $500.00 $3909.25 2.328 $2322.10 $127.87 $6359.22 3504 $297 12.57 $9,661 $9,243 $8,618 9.59 10.97 14.01

19 15 + Variable-Speed Scroll-Compressor S stem 19.04 $1,829.53 $650.00 $4359.41 2.383 $2322.10 $134.43 $6815.94 3039 $258 12.42 $9,680 $9,318 $8,775 9.47 10.84 13.84

Assumptions:

1 Electricity cost = 0.085 S/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 S/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime = 15 years.

3 Baseline unit includes:

Evaporator: 6.00 sq.ft., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes

Condenser: 23.00 sq.ft., 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes

Compressor: Reciprocating, 10.49 EER (nominal); Accumulator

Evaporator Fan Motor: PSC, 58.5% efficient

Condenser Fan Motor: PSC, 55.0% efficient

Enhancement Devices: None

4 Nom-Illerd Thcrmosnnic Expansion Valve replaces tIs' acrd 'or a Tinto Delay Relay,

5 Maximum Sensible Heat Ratio = 76.5%

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

7 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of S·ton, Single Package System Central Air Conditioner 

Incr. Installed Annual Annual Cumul. Lifecycle Costs 

SEER Manufr Manufr Retail Mark Installation Maintenance Consumer Elec. Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost Cost use cost Period (1992$) 

Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr (1992$) (years) 4% 6% 10% 

0 Baseline 9.71 $666.00 . $1471.81 2.210 $2221.22 $46.69 $3739.72 5962 $505 NA $9,358 $8,647 $7,583 

I 0+ Backward Inclined Indoor Blower 9.98 $666.02 $0.02 $1473.42 2.21z' $2221.22 $46.69 $3741.33 5799 $492 0.12 $9,206 $8,515 $7,480 

2 1 + Evaporator Slit Fins 10.07 $666.23 $0.21 $1475.37 2.215 $2221.22 $46.69 $3743.28 5748 $487 0.20 $9,161 $8,475 $7,449 

3 2 + Scroll Compressor: 11.30 EER 11.52 $690.87 $24.64 $1520.81 2.201 $2221.22 $46.69 $3788.72 5022 $426 0.62 $8,521 $7,923 $7,026 

4 3 + Time Delay Relay 11.97 $697.37 $6.50 $1533.96 2.200 $2221.22 $46.69 $3801.87 4834 $410 0.65 $8,357 $7,781 $6,918 

5 4 + More Efl'icicnt Evaporator PSC Pan Motor (68.5%) 12.27 $707.14 $9.77 $1552.93 2.196 $2221.22 $39.08 $3813.23 4714 $400 0,70 $8,256 $7,694 $6,853 

6 5 + Non-Bleed Thermostatic Expansion Valve 12.58 $714.72 $7.58 $1568.00 2,194 $2221.22 $39.08- $3828,30 4599 $390 0.77 $8,163 $7,615 $6,794 

7 6 + More Efficient Condenser PSC Fan Motor (65.0%) 12.70 $721.02 $6.30 $1580.80 2,192 $2221.22 $31.47 $3833,49 4557 $386 0.79 $8,128 $7,585 $6,771 

8 7 + Increase Evaporator Fin Density to 14 fpi 12.74 $722.48 $1.46 $1584.97 2.194 $2221.22 $31.47 $3837,66 4542 $385 0.81 $8,118 $7,576 $6,766 

9 8 + Increase Evaporator Face Area to 7,50 sg.ft. 13.13 $739.70 $17.22 $1624.70 2.196 $2231.51 $31.47 $3887.68 4408 $374 1.12 $8,042 $7,516 $6,729 

to 9 + Condenser Grooved Tubes 13,28 $756,52 $16.82 $1665.18 2.201 $2231.51 $31.47 $3928.16 4356 $369 1.38 $8,034 $7,514 $6,737 

II 10 + Increase Condenser Face Area to 27,60 sg.ft. 13,53 $788.74 $32.22 $1742,58 2,209 $2262,38 $31.47 $4036.43 4277 $362 2.08 $8,067 $7,557 $6,793 

12 II + Increase Condenser Face Area to 36.50 sq.ft. 13.79 $850.40 $61.66 $1892.47 2.225 $2322.10 $31.47 $4246.04 4195 $356 3.38 $8,199 $7,700 $6,951 

13 12 + Evaporator ECM Pan Motor 14.40 $1,030.66 $180.26 $2258.21 2.191 $2322,10 $47,09 $4627.40 4019 $341 5.39 $8,415 $7,936 $7,219 

14 13 + Electronic Expansion Valve 14,59 $1,106.83 $76.17 $2440.06 2,205 $2322.10 $56.07 $4818.23 3966 $336 6,38 $8,556 $8,083 $7,375 

15 14 + Condenser ECM Fan Motor 14,66 $1,179.53 $72.70 $2615.96 2.218 $2322,10 $63.68 $5001.74 3947 $335 7.39 $8,721 $8,251 $7,546 

16 15 + Two-Speed Recip-Compressor System 16.27 $1,368.28 $188.75 $3032,98 2.217 $2322.10 $80.54 $5435.62 3557 $302 8.32 $8,788 $8,364 $7,729 

17 15 + Variable-Speed Recip-Compressor System 17.14 $1,779.53 $600.00 $3928,03 2.207 $2322.10 $132.24 $6382.37 3376 $286 12.06 $9,564 $9,161 $8,559 

18 15 + Two-Speed Scroll-Compressor System 16.52 $1,679.53 $500.00 $3909.25 2.328 $2322.10 $127.87 $6359.22 3504 $297 12.57 $9,661 $9,243 $8,618 

19 15 + Variable-Speed Scroll-Compressor System 19.04 $1,829.53 $650.00 $4359.41 2.383 $2322.10 $134.43 $6815.94 3039 $258 12.42 $9,680 $9,318 $8,775 

Assumptions: 

1 Electricity cost = 0.085 S/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment). 

2 Lifetime = 15 years. 

3 Baseline unit includes: 

Evaporator: 6.00 sg.ft., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes 

Condenser: 23,00 sg.ft., 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes 

Compressor: Reciprocating, 10.49 EER (nominal); Accumulator 

Evaporator Fan Motor: PSC, 58.5% efficient 

Condenser Fan Motor: PSC, 55.0% efficient 

Enhancement Devices: None 

NOIl·Bkl'<I Tlwl'Illo,lalic Expallsioll Valve replill'l" Ihl' Ill'l'd rill' a Tillll' DelilY ReillY. 

5 Maximum Sensible Heat Ratio = 76.5% 

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

7 Condenser ECM Fan Motor is run at a single speed. 

6/3/94 

Cumulative 

Cost of Conserved Energy 

(centslkWh) 

4% 6% 10% 

NA NA NA 

0.09 0.10 0.13 

0.15 0.17 0.22 

0.47 0.54 0.69 

0.50 0.57 0,72 

0.53 0,61 0,77 

0.58 0.67 0.85 

0,60 0.69 0.88 

0,62 0.71 0,91 

0.86 0.98 1.25 

1.06 1.21 1.54 

1.58 1.81 2.31 

2.58 2,95 3,77 

4.11 4.71 6.01 

4.86 5.56 7.10 

5.63 6.45 8.24 

6.34 . 7,26 9.27 

9.19 10.52 13.44 

9.59 10.97 14.01 

9.47 10,84 13,84 
6/3/94

Life Cycle Cost for 5-ton Single Package System

Central Air Conditioner

$9,400

$9,000

$7,800

$7,400

19

6% discount rate

10

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0

SEER

EE-RM-93-801 COMMENT 0DD

u 

u 

$9,400 

$9,000 

~ $8,200 

$7,800 

$7,400 

o 

9.0 

6/3/94 

Life Cycle Cost for 5-ton Single Package System 

Central Air Conditioner 

Fa-- 6% discount rate I 

1 

2 

14 

3 

13 

4 

5 

6 

8 

12 

9 11 

10 

10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 

SEER 

19 

18.0 19.0 20.0 
6/3/94

Life Cycle Cost for 5-ton Single Package System

Central Air Conditioner

$9,700

$9,200

$8,700

$7,700

$7,200

4% discount rate

- - 6% discount rate

®- - - - 10% discount rate

b

$6,700 1 i i i °- e

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17,0 18.0 19.0 20.0

SEER

EE-RM-93-801 COMMENT 0DD

$9,700 ----

$9,200 

$8,700 

,-., 

f:F:t 

N 

0\ 

0\ 

C $8,200 

U 

U 

~ 

$7,700 

$7,200 

$6,700 

9.0 10.0 

6/3/94 

Life Cycle Cost for 5-ton Single Package System 

Central Air Conditioner 

-0-- 4% discount rate 

- - 6. - - 6% discount rate 

- - - -+- - - - 10% discount rate 

11.0 12.0 13.0 

, 

, , 

, ' , 

14.0 15.0 

SEER 

I 

6, 

I 

I 

16.0 17.0 18.0 19.0 20.0 
Life Cycle Costs and Payback Periods of 3-ton , Single Package System Central Heat Pump

6/3/94

Incr. Installed Annual Elec Use Annual Cumel. Lifecycle Costs Cumulative

SEER HSPF Manufr Manufr Retail Mark Installation Maintenance consumer Cooling Heating Energy Payback Cost of Conserved Energy

Level Design Option Cost Cost Cost Up Cost Cost cost cost Period (1992$) (cents/kWh)

Btuh/W Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr kW r (1992$) (years) 4% 6% 10% 4% 696 10%

0 Baseline 9.70 6.69 $677.00 - $1412.49 2.086 $1202.35 $46.69 $2661.53 3764 8,379 $1,029 NA $14,105 $12,658 $10,490 NA NA NA

I 0 + Backward Inclined Indoor Blower 9.99 6.79 $677.00 $0.00 $1413.98 2.089 $1202.35 $46.69 $2663.02 3654 8,254 $1,009 0.07 $13,885 $12,466 $10,340 0.12 0.14 0.18

2 1 + Indoor Coil Slit Fins 10.12 6.90 $677.03 $0.03 $1415.52 2.091 $1202.35 $46.69 $2664.56 3608 8,128 $995 0.09 $13,724 $12,326 $10,231 0.17 0.20 0.26

3 2 + Increase Indoor Coil Fin Density to 14 fpi 10.16 6.92 $677.69 $0.66 $1418.12 2.093 $1202.35 $46.69 $2667.16 3594 8,096 $991 0.15 $13,684 $12,290 $10,203 0.30 0.34 0.44

4 3 + More Efficient Indoor PSC Fan Motor (68.5%) 10.40 7.01 $684.89 $7.20 $1431.71 2.090 $1202.35 $39.08 $2673.14 3512 7,995 $975 0.22 $13,517 $12,145 $10,091 0.41 0.47 0.60

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 10.51 7.10 $691.19 $6.30 $1443.79 2.089 $1202.35 $31.47 $2677.61 3476 7,890 $963 0.24 $13,389 $12,034 $10,005 0.50 0.57 0.73

6 5 + Time Delay Relay 10.84 7.25 $697.69 $6.50 $1456.20 2.087 $1202.35 $31.47 $2690.02 3369 7,734 $941 0.32 $13,153 $11,830 $9,848 0.65 0.74 0.95

7 6 + Reciprocating Compressor: 11.26 EER 11.34 7,46 $708.68 $10.99 $1476.16 2,083 $1202.35 $31.47 $2709.98 3221 7,516 $910 0,41 $12,829 $11,549 $9,632 0.80 0.92 1.17

8 7 + Increase Indoor Coil Face Area to 4.97 sq.ft. 12.04 7,73 $722.05 $13.37 $1512.67 2.095 $1212.09 $31.47 $2756.23 3032 7,250 $872 0.60 $12,446 $11,221 $9,385 1.16 1.33 1.70

9 8 + Demand Defrost 12.04 7.96 $733.55 $11.50' $1547.41 2.109 $1212.09 $31.47 $2790.97 3032 7,039 $854 0.74 $12,282 $11,082 $9,284 1.59 1.82 2.33

10 9 + Outdoor Coil Grooved Tubes 12.34 8.00 $740.52 $6.97 $1574.54 2.126 $1212.09 $31.47 $2818.10 2958 7,009 $845 0.85 $12,211 $11,023 $9,244 1.75 2.00 2.55

11 10 + Increase Indoor Coil Face Area to 6.39 sq.ft. 12.73 8.15 $755.60 $15.08 $1629.45 2.156 $1221.83 $31.47 $2882.75 2868 6,877 $826 1.09 $12,066 $10,905 $9,165 2,22 2.54 3.25

12 11 + Scroll Compressor: 11,50 EER 13.29 8.25 $774.58 $18.98 $1692.46 2.185 $1221.83 $31.47 $2945.76 2748 6,791 $808 1.29 $11,935 $10,798 $9,095 2.51 2.88 3.68

13 12 + Non-Bleed Thermostatic Expansion Valves 13.62 8.47 $787.03 $12.45 $1744.51 2.217 $1221.83 $31.47 $2997.81 2681 6,616 $788 1.39 $11,759 $10,651 $8,991 2.79 3.20 4.08

14 13 + Increase Outdoor Coil Face Area to 21.00 sq.ft 14.34 8.80 $811.89 $24.86 $1833.32 2.258 $1262.09 $31.47 $3126.88 2547 6,372 $756 1.70 $11,532 $10,469 $8,877 3.44 3.94 5.03

15 14 + Increase Indoor Coil Face Area to 7.50 sq.ft. 14.55 8.86 $822.19 $10.30 $1909.07 2.322 $1269.70 $31.47 $3210.24 2509 6,325 $749 1.96 $11,536 $10,483 $8,906 3.93 4.50 5.75

16 15 + Increase Indoor Coil Tube Density to 4 rows 14.66 8.93 $844.58 $22.39 $2027.22 2.400 $1269.70 $31.47 $3328.39 2490 6,276 $743 2.33 $11,590 $10,545 $8,980 4.71 5.39 6.88

17 16 + Increase Outdoor Coil Face Area to 30.00 sq.ft 15.02 9.04 $890.19 $45.61 $2215.89 2.489 $1330.09 $31.47 $3577.45 2432 6,200 $732 3.08 $11,712 $10,683 $9,142 6.18 7.08 9.04

18 17 + Outdoor ECM Fan Motor 15.12 9.17 $962.89 $72.70 $2453.30 2.548 $1330.09 $39.08 $3822.47 2415 6,115 $723 3.79 $11,861 $10,844 $9,322 7.74 8.86 11.32

19 18 + Electronic Expansion Valve 15.31 9.22 $1,011.23 $48.34 $2651.76 2.622 $1330.09 $48.06 $4029.91 2385 6,083 $718 4.39 $12,009 $11,000 $9,489 8.92 10.21 13.04

20 19 + Indoor ECM Fan Motor 15.87 9.28 $1,152.53 $141.30 $3008.68 2.611 $1330.09 $63.68 $4402.45 2300 6,042 $707 5.40 $12,264 $11,270 $9,781 10.70 12.25 15.64

21 20 + Two-Speed Recip-Compressor System 17.37 9.32 $1,332.79 $180.26 $3486.45 2.616 $1330.09 $77.62 $4894.16 2102 6,012 $688 6.54 $12,541 $11,574 $10,126 12.08 13.83 17.66

22 20 + Variable-Speed Recip-Compressor System 17.70 9.72 $1,744.04 $591.51 $4484.37 2,571 $1330.09 $123.47 $5937.93 2063 5,770 $664 8.97 $13,320 $12,386 $10,988 17.32 19.83 25.32

23 20 + Two-Speed Scroll-Compressor System 17.93 9.89 $1,644.04 $491.51 $4606.19 2.802 $1330.09 $119.10 $6055.38 2037 5,666 $653 9.02 $13,314 $12,396 $11,021 17.67 20.23 25.83

24 120 + Variable-edScroll-Com Scrll-stem 20.21 10.69 $1,794.04 $641.51 $5190.76 2.893 $4330.09 $125.66 $6646.51 1806 5,243 $597 9.23 $13,290 $12,450 $11,191 18.31 20.96 26,76

Assumptions;

1 Electricity cost= 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime=15 years.

3 Baseline unit includes:

Indoor Coil: 3.55 sq.ft., 13 fins/inch, Wavy Fins, 3 tube rows, Groove Tubes

Outdoor Coil: 15.00 sq.ft., 20 fins/inch, Slit Fins, I tube row, Smooth Tubes

Compressor: Reciprocating, 10.80 EER (nominal); Accumulator

Indoor Fan Motor: PSC, 58.5% efficient

Outdoor Fan Motor: PSC, 55.0% efficient

Enhancement Devices: None

4 All Two-Speed and Variable-Speed Compressor Systems include an Accumulator.

5 Maximum Sensible Heat Ratio = 76.5%

6 Non-Bleed Thermostatic Expansion Valves replace the need for a Time Delay Relay and an Accumulator.

7 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

8 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of 3·ton, Single Package System Central Heat Pump 

Incr. Installed Annual Elec Use Annual Cumu!. 

SEER HSPF Manurr Manufr Retail Mark Installation Maintenance consumer Cooling Heating Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost cost cost Period 

BtuhIW BtuhlW (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr kWhlyr (1992$) (years) 

0 Baseline 9.70 6.69 $677.00 $1412.49 2.086 $1202.35 $46.69 $2661.53 3764 8,379 $1,029 NA 

I 0+ Backward Inclined Indoor Blower 9.99 6.79 $677.00 SO.OO SI413.98 2.089 $1202.35 $46.69 $2663.02 3654 8,254 $1,009 0.07 

2 I + Indoor Coil Slit Fins 10.12 6.90 $677.03 $0.03 $1415.52 2.091 $1202.35 $46.69 $2664.56 3608 8,128 $995 0.09 

3 2 + Increase Indoor Coil Fin Density to 14 fpi 10.16 6.92 $677.69 $0.66 $1418.12 2.093 $1202.35 $46.69 $2667.16 3594 8,096 $991 0.15 

4 3 + More Efficient Indoor PSC Fan Motor (68.5%) 10.40 7.01 $684.89 $7.20 $1431.71 2.090 S1202.35 $39.08 $2673.14 3512 7,995 S975 0.22 

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 10.51 7.10 $691.19 $6.30 S1443.79 2.089 S1202.35 S31.47 $2677.61 3476 7,890 $963 0.24 

6 5 + Time Delay Relay 10.84 7.25 $697.69 $6.50 $1456.20 2.087 $1202.35 $31.47 $2690.02 3369 7,734 S941 0.32 

7 6 + Reciprocating Compressor: 11.26 EER 11.34 7.46 $708.68 $10.99 $1476.16 2.083 $1202.35 $31.47 $2709.98 3221 7,516 $910 0.41 

8 7 + Increase Indoor Coil Face Area to 4.97 sq.f!. 12.04 7.73 $722.05 $13.37 S1512.67 2.095 $1212.09 $31.47 $2756.23 3032 7,250 $872 0.60 

9 8 + Demand Defrost 12.Q4 7.96 $733.55 $11.50· $1547.41 2.109 $1212.09 $31.47 $2790.97 3032 7,039 $854 0.74 

10 9 + Outdoor Coil Grooved Tubes 12.34 8.00 $740.52 $6.97 $1574.54 2.126 $1212.09 $31.47 $2818.10 2958 7,009 $845 0.85 

II 10 + Increase Indoor Coil Face Area to 6.39 sq.ft. 12.73 8.15 $755.60 $15.08 $1629.45 2.156 S1221.83 $31.47 S2882.75 2868 6,877 $826 1.09 

12 11 + Scroll Compressor: 11.50 EER 13.29 8.25 $774.58 $18.98 $1692.46 2.185 $1221.83 $31.47 $2945.76 2748 6,791 $808 1.29 

13 12 + Non-Bleed Thermostatic Expansion Valves 13.62 8.47 $787.03 $12.45 $1744.51 2.217 $1221.83 $31.47 $2997.81 2681 6,616 $788 1.39 

14 13 + Increase Outdoor Coil Face Area to 21.00 sq.ft. 14.34 8.80 $811.89 $24.86 $1833.32 2.258 $1262.09 $31.47 $3126.88 2547 6,372 $756 1.70 

15 14 + Increase Indoor Coil Face Area to 7.50 sq.ft. 14.55 8.86 $822.19 $10.30 $1909.07 2.322 $1269.70 $31.47 $3210.24 2509 6,325 $749 1.96 

16 15 + Increase Indoor Coil Tube Density to 4 rows 14.66 8.93 $844.58 $22.39 $2027.22 2.400 $1269.70 $31.47 $3328.39 2490 6,276 $743 2.33 

17 16 + Increase Outdoor Coil Face Area to 30.00 sq.ft. 15.02 9.04 $890.19 $45.61 $2215.89 2.489 $1330.09 $31.47 $3577.45 2432 6,200 $732 3.08 

18 17 + Outdoor ECM Fan Motor 15.12 9.17 $962.89 $72.70 $2453.30 2.548 $1330.09 $39.08 $3822.47 2415 6,115 $723 3.79 

19 18 + Electronic Expansion Valve 15.31 9.22 $1,011.23 $48.34 $2651.76 2.622 $1330.09 $48.06 $4029.91 2385 6,083 $718 4.39 

20 19 + Indoor ECM Fan Motor 15.87 9.28 $1,152.53 $141.30 $3008.68 2.611 $1330.09 $63.68 $4402.45 2300 6,042 $707 5.40 

21 20 + Two·Speed Recip-Compressor System 17.37 9.32 $1,332.79 $180.26 $3486.45 2.616 $1330.09 $77.62 $4894.16 2102 6,012 $688 6.54 

22 20 + VUliahlc-Specd Recip·Compressor System 17.70 9.72 $1,744.04 $591.51 $4484.37 2.571 $1330.09 $123.47 $5937.93 2063 5,770 $664 8.97 

23 20 + Two-Speed Scroll-Compressor System 17.93 9.89 $1,644.04 $491.51 $4606.19 2.802 $1330.09 $119.10 $6055.38 2037 5,666 $653 9.02 

24 20 + Variable-Speed Scroll-Compressor System 20.21 10.69 $1,794.04 $641.51 $5190.76 2.893 $.1330.09 $125.66 $6646.51 1806 5,243 $597 9.23 

Assumptions' 

1 Electricity cost = 0.085 SIkWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 $IkWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment). 

Lifetime = 15 years. 

3 llaseline unit includes: 

Indoor Coil: 3.55 sq.ft., 13 fins/inch, Wavy Fins, 3 tube rows, Groove Tubes 

Outdoor Coil: 15.00 sq.f!., 20 fins/inch, Slit Fins, 1 tube row, Smooth Tubes 

Compressor: Reciprocating, 10.80 EER (nominal); Accumulator 

Indoor Fan Motor: PSC, 58.5% efficient 

Outdoor Fan Motor: PSC, 55.0% efficient 

Enhancement Devices: None 

4 All Two-Speed and Variable-Speed Compressor Systems include an Accumulator. 

5 Maximum Sensible Heat Ratio = 76.5% 

6 Non-Bleed Thermostatic Expansion Valves replace the need for a Time Delay Relay and an Accumulator. 

Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

Condenser ECM Fan Motor is run at a single speed. 

6/3/94 

Lifecycle Costs Cumulative 

Cost of Conserved Energy 

(1992$) (centslkWh) 

4% 6% 10% 4% 6% 10% 

$14,105 $12,658 $10,490 NA NA NA 

S13,885 S12,466 S10,340 0.12 0.14 0.18 

$13,724 $12,326 S1O,231 0.17 0.20 0.26 

S13,684 S12,290 SIO,203 0.30 0.34 0.44 

S13,517 S12,145 $10,091 0.41 0.47 0.60 

$13,389 S12,034 $10,005 0.50 0.57 0.73 

$13,153 $11,830 $9,848 0.65 0.74 0.95 

$12,829 $11,549 $9,632 0.80 0.92 1.17 

$12,446 $11,221 S9,385 1.16 1.33 1.70 

$12,282 $11,082 S9,284 1.59 1.82 2.33 

$12,211 Sl1,023 S9,244 1.75 2.00 2.55 

$12,066 $10,905 S9,165 2.22 2.54 3.25 

$11,935 S1O,798 $9,095 2.51 2.88 3.68 

$11,759 $10,651 $8,991 2.79 3.20 4.08 

$11,532 $10,469 $8,877 3.44 3.94 5.03 

$11,536 $10,483 $8,906 3.93 4.50 5.75 

$11,590 $10,545 $8,980 4.71 5.39 6.88 

$11,712 $10,683 $9,142 6.18 7.08 9.04 

$11,861 SIO,844 $9,322 7.74 8.86 11.32 

$12,009 $11,000 S9,489 8.92 10.21 13.04 

$12,264 S11,270 $9,781 10.70 12.25 15.64 

$12,541 $11,574 S10,126 12.08 13.83 17.66 

$13,320 $12,386 $10,988 17.32 19.83 25.32 

$13,314 S12,396 $11,021 17.67 20.23 25.83 

$13,290 S12,450 $11,191 18.31 20.96 26.76 
6/3/94

Life Cycle Cost for 3-ton Single Package System

Central Heat Pump

$12,700

$12,300

$11,900

$11,100

$10,700

$10,300 -

0- 6% discount rate

i- I I I

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0

SEER

EE-RM-93-801 COMMENT 0DD

$12,700 

\ 

1 

$12,300 2 

$11,900 6 

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V7 

N 7 0'\ 

0'\ 

o $11,500 

U 

U 

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$11,100 

$10,700 

$10,300 -

9.0 10.0 11.0 

6/3/94 

Life Cycle Cost for 3-ton Single Package System 

Central Heat Pump 

I ~-oJ- 6% discount rate I 23 

8 20 

9 10 

11 19 

12 

13 

16 

-j 

12.0 13.0 14.0 15.0 16.0 17.0 18.0 

SEER 

24 

19.0 20.0 21.0 
6/3/94

Life Cycle Cost for 3-ton Single Package System

Central Heat Pump

$14,500

$14,100

$13,700

$13,300

$12,900

$12,500

$12,100

a

$11,700

U $11,300

U

$10,900

A

$10,500

4

$10,100

$9,700

$9,300

$8,900

4% discount rate

- - - 6% discount rate

10% discount rate

A Q

L

$8,500

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 '21.0

SEER

EE-RM-93-801 COMMENT 0DD

,-.., 

fh 

N 

$14,500 

$14,100 

$13,700 

$13,300 

$12,900 

$12,500 

$12,100 

~ $11,700 

'-' ""'" 

U $11,300 - U 

...;J $10,900 

$10,500 

$10,100 

$9,700 

$9,300 

$8,900 

$8,500 

9.0 

• 

10.0 11.0 

6/3/94 

Life Cycle Cost for 3-ton Single Package System 

Central Heat Pump 

12.0 13.0 

--0-- 4% discount rate 

- - -!::i - - 6% discount rate 

- - - - +- - - - 10% discount rate 

14.0 15.0 

SEER 

16.0 

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17.0 18.0 

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19.0 20.0 ' 21.0 
Life Cycle Costs and Payback Periods of 5-ton, Single Package System Central Heat Pump

6/3/94

Incr. Installed Annual Elec Use Annual Carnal. Lifecycle Costs Cumulative

SEER HSPF Manufr Manufr Retail Mark Installation Maintenance Consumer Cooling Heating Energy Payback Cost of Conserved Energy

Level Design Option Cost Cost Cost Up Cost Cost Cost cost Period (1992$ (cents/kWh)

Btuh/W Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/ r kWh/ r (1992$) ears) 4% 6% 10% 4% 6% 10%

0 Baseline 9.70 6.88 $934.00 - $2156.86 2,309 $1342.86 $46.69 $3546.41 5977 13,966 $1,690 NA $22,341 $19,964 $16,404 NA NA NA

1 0 + Backward Inclined Indoor Blower 9.99 7.00 $934.03 $0,03 $2158.56 2.311 $1342.86 $46.69 $3548.11 5803 13,732 $1,656 0.05 $21,958 $19,630 $16,142 0.09 0.10 0.13

2 I + Indoor Coil Slit Fins 10.07 7.06 $934.25 $0.22 $2160.62 2.313 $1342.86 $46.69 $3550.17 5757 13,611 $1,642 0.08 $21,802 $19,494 $16,036 0.15 0.18 0.22

3 2 + Time Delay Relay 10.36 7.19 $940.75 $6.50 $2174.36 2.311 $1342.86 $46.69 $3563.91 5597 13,374 $1,608 0.21 $21,442 $19,181 $15,794 0.41 0.47 0.61

4 3+ Scroll Compressor; I1.30ltItR 11.93 7,57 $965.13 $24.38 $2221.36 2.302 $1342.86 $46.69 $3610.91 4861 12,693 $1,488 0.32 $20,154 $18,062 $14,928 0.52 0.60 0.76

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 12.05 7.66 $971.43 $6.30 $2234.73 2,300 $1342.86 $39.08 $3616.67 4811 12,545 $1,471 0.32 $19,973 $17,904 $14,806 0.54 0.62 0.79

6 5 + Increase Indoor Coil Fin Density to 14 fpi 12.09 7.70 $973.16 $1.73 $2239.60 2.301 $1342.86 $39.08 $3621.54 4797 12,484 $1,465 0.33 $19,907 $17,847 $14,762 0.57 0.66 0.84

7 6 + More Efficient Indoor PSC Fan Motor (68.5%) 12.43 7.81 $982.92 $9.76 $2259.41 2.299 $1342.86 $31.47 $3633.74 4665 12,308 $1,439 0.35 $19,629 $17,606 $14,576 0.60 0.69 0.87

8 7 + Demand Defrost 12.43 8.04 $994.42 $11.50 $2282.45 2.295 $1342.86 $31.47 $3656.78 4665 11,950 $1,408 0.39 $19,314 $17,334 $14,368 0.76 0.87 1.11

9 8 + Non-Bleed Thermostatic Expansion Valves 12.74 8.28 $1,016.08 $21.66 $2324.39 2.288 $1342.86 $31.47 $3698.72 4551 11,608 $1,370 0.47 $18,927 $17,001 $14,116 0.96 1.10 1.40

10 9 + Increase Indoor Coil Face Area to 7.50 sq.ft. 13.10 8.37 $1,033.92 $17.84 $2382.38 2.304 $1353.15 $31.47 $3767.00 4424 11,475 $1,348 0.64 $18,750 $16,855 $14,017 1.28 1.46 1.87

11 10 + Outdoor Coil Grooved Tubes 13.30 8.40 $1,048.28 $14.36 $2435.42 2.323 $1353.15 $31.47 $3820.04 4360 11,438 $1,339 0.78 $18,708 $16,825 $14,005 1.52 1.74 2.23

12 11 + Increase Outdoor Coil Face Area to 27.30 sq.ft 13.74 8.63 $1,106.40 $58.12 $2599.23 2.349 $1405.49 $31.47 $4036.19 4220 11,135 $1,301 1.26 $18,506 $16,676 $13,935 2.51 2.87 3.66

13 12 + Electronic Expansion Valve 13.93 8.68 $1,154.74 $48.34 $2750.45 2.382 $1405.49 $40.45 $4196.39 4161 11,072 $1,291 1.63 $18,552 $16,736 $14,017 3.22 3.68 4.71

14 13 + Outdoor ECM Fan Motor 14.02 8.79 $1,227.44 $72.70 $2947.23 2.401 $1405.49 $48.06 $4400.78 4137 10,936 $1,278 2.07 $18,605 $16,809 $14,118 4.18 4.78 6.10

15 14 + Increase Outdoor Coil Face Area to 36.50 sq.ft 14.20 8.86 $1,295.30 $67.86 $3169.29 2.447 $1467.22 $48.06 $4684.57 4084 10,844 $1,265 2.68 $18,753 $16,973 $14,309 5.41 6.19 7.90

16 15 + Indoor ECM Fan Motor 14.89 8.95 $1,475.55 $180.25 $3606.36 2.444 $1467.22 $63.68 $5137.26 3893 10,733 $1,240 3.53 $18,921 $17,177 $14,566 6.87 7.86 10.04

17 16 + Two-Speed Recip-Compressor System 16.48 8.96 $1,664.30 $188.75 $4166.06 2.503 $1467.22 $80.83 $5714.11 3519 10,722 $1,207 4.48 $19,135 $17,438 $14,895 7.93 9.08 11.59

18 16 + Variable-Speed Recip-Compressor System 16.65 9.49 $2,075.55 $600.00 $5378.93 2.592 $1467.22 $133.11 $6979.26 3481 10,127 $1,153 6.39 $19,803 $18,182 $15,752 12.37 14.16 18.08

19 16 + Two-Speed Scroll-Compressor System 16.78 9.73 $1,975.55 $500.00 $5599.51 2.834 $1467.22 $128.74 $7195.47 3454 9,875 $1,130 6.51 $19,757 $18,168 $15,789 13.01 14.89 19.02

20 16 + Variable-SedScroll-Compressor System 18.59 10.01 $2,125.55 $650.00 $6366.16 2.995 $1467.22 $135.29 $7968.67 3118 9,603 $1,078 7.22 $19,957 $18,441 $16,170 13.91 15.93 20.34

Assumptions:

1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime = 15 years.

3 Baseline unit includes:

Indoor Coil: 6.00 sq.ft., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes

Outdoor Coil: 19.5 sq.ft., 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes

Compressor: Reciprocating, 10.49 EER (nominal); Accumulator

Indoor Fan Motor: PSC, 58.5% efficient

Outdoor Fan Motor: PSC, 55.0% efficient

Enhancement Devices: None

4 Maximum Sensible Heat Ratio = 76.5%

5 Non-Bleed Thermostatic Expansion Valves replace the need for a Time Delay Relay; Accumulator still required due to excess refrigerant.

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

7 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of 5.ton, Single Package System Central Heat Pump 

[ncr. [nstalled Annual Blec Usc Annual Cumu!. 

SEER HSPF Manurr Manurr Retail Mark [nstallation Maintenance Consumer Cooling Heating Energy Payback 

Le.vel Design Option Cost Cost Cost Up Cost Cost Cost cost Period 

BtuhlW BtuhlW ([992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr kWh/yr (1992$) (years) 

0 Baseline 9.70 6.88 $934.00 . $2156.86 2.309 $1342.86 $46.69 $3546.41 5977 13,966 $1,690 NA 

1 0+ Backward Inclined Indoor Blower 9.99 7.00 $934.03 $0,03 $2158.56 2.311 $1342.86 $46.69 $3548.11 5803 13,732 $1,656 0.05 

2 t + Indoor Coil Slit Pins 10.07 7.06 $934.25 $0.22 $2160.62 2.313 $1342.86 $46.69 $3550.17 5757 13,611 $1,642 0.08 

3 2 + Time Delay Relay 10.36 7.19 $940.75 $6.50 $2174.36 2.311 S1342.86 $46.69 $3563.91 5597 13,374 $1,608 0.21 

·1 .1 + Se",11 Compressor: I t .30 EER 11.93 7.57 $965.13 $24.38 $2221.36 2.302 $1342.86 $46.69 :l>36tO.91 486t 12,693 SI,488 0.32 

5 4 + More Efficient Outdoor PSC Pan Motor (65.0% 12.05 7.66 $971.43 $6.30 $2234.73 2.300 $1342.86 $39.08 $3616.67 4811 12,545 $1,471 0.32 

6 5 + Increase Indoor Coil Pin Density to 14 fpi 12.09 7.70 $973.16 $1.73 $2239.60 2.301 $1342.86 $39.08 $3621.54 4797 12,484 $1,465 0.33 

7 6 + More Efficient Indoor PSC Pan Motor (68.5%) 12.43 7.81 $982.92 $9.76 $2259.41 2.299 $1342.86 $31.47 $3633.74 4665 12,308 $1,439 0.35 

8 7 + Demand Defrost 12.43 8.04 $994.42 $11.50 $2282.45 2.295 $1342.86 $31.47 $3656.78 4665 11,950 $1,408 0.39 

9 8 + Non-Bleed Thermostatic Expansion Valves 12.74 8.28 $1,016.08 $21.66 $2324.39 2.288 $1342.86 $31.47 $3698.72 4551 11,608 $1,370 0.47 

10 9 + Increase Indoor Coil Pace Area to 7.50 sq.ft. 13.10 8.37 $1,033.92 $17.84 $2382.38 2.304 $1353.15 $31.47 $3767.00 4424 11,475 $1,348 0.64 

11 10 + Outdoor Coil Grooved Tubes 13.30 8.40 $1,048.28 $14.36 $2435.42 2.323 $1353.15 $31.47 $3820.04 4360 11,438 $1,339 0.78 

12 11 + Increase Outdoor Coil Pace Area to 27.30 sq.ft 13.74 8.63 $1,106.40 $58.12 $2599.23 2.349 $1405,49 $31.47 $4036.19 4220 11,135 $1,301 1.26 

13 12 + Electronic Expansion Valve 13.93 8.68 $1,154.74 $48.34 $2750.45 2.382 $1405.49 $40.45 $4196.39 4161 11,072 $1,291 1.63 

14 13 + Outdoor ECM Pan Motor 14.02 8.79 $1,227.44 $72.70 $2947.23 2.401 $1405.49 $48.06 $4400.78 4137 10,936 $1,278 2.07 

15 14 + Increase Outdoor Coil Pace Area to 36.50 sq.ft 14.20 8.86 $1,295.30 $67.86 $3169.29 2.447 $1467.22 $48.06 $4684.57 4084 10,844 $1,265 2.68 

16 15 + Indoor ECM Pan Motor 14.89 8.95 $1,475.55 $180.25 $3606.36 2.444 $1467.22 $63.68 $5137.26 3893 10,733 $1,240 3.53 

17 16 + Two-Speed Recip·Compressor System 16.48 8.96 $1,664.30 $188.75 $4166.06 2.503 $1467.22 $80.83 $5714.11 3519 10,722 $1,207 4.48 

18 16 + Variable-Speed Recip-Compressor System 16.65 9.49 $2,075.55 $600.00 $5378.93 2.592 $1467.22 $133.11 $6979.26 3481 10,127 $1,153 6.39 

19 J 6 + Two-Speed Scroll-Compressor System 16.78 9.73 $1,975.55 $500.00 $5599.51 2.834 $1467.22 $128.74 $7195.47 3454 9,875 $1,130 6.51 

20 16 + Variable-Speed Scroll-Compressor System 18.59 10.01 $2.125.55 $650.00 $6366.16 2.995 $1467.22 $135.29 $7968.67 3118 9,603 $1,078 7.22 

Assumptions: 

1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment). 

Lifetime = 15 years. 

Baseline unit includes: 

Indoor Coil: 6.00 sq.ft" 13 fins/inch, Wavy Pins, 4 lube rows, GrOOve Tubes 

Outdoor Coil: 19.5 sq.ft" 20 fins/inch, Slit Pins, 2 tube rows, Smooth Tubes 

Compressor: Reciprocating, 10.49 EER (nominal); Accumulator 

Indoor Pan Motor: PSC, 58.5% efficient 

Outdoor Pan Motor: PSC, 55.0% efficient 

Enhancement Devices: None 

Maximum Sensible Heat Ratio = 76.5% 

Non-Bleed Thermostatic Expansion Valves replace the need for a Time Delay Relay; Accumulator still required due to excess refrigerant. 

6 Evaporator ECM Pan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

Condenser ECM Pan Motor is run at a single speed. 

6/3/94 

Lifecycle Costs Cumulative 

Cost of Conserved Energy 

(1992$) (ccntslkWh) 

4% 6% 10% 4% 6% 10% 

$22,341 $19,964 $16,404 NA NA NA 

$21,958 $19,630 $16,142 0.09 0.10 0.13 

$21,802 $19,494 $16,036 0.15 0.18 0.22 

$2[,442 $19,181 $15,794 0.41 0.47 0.61 

$20,154 S18,062 $14,928 0.52 0.60 0.76 

S19,973 $17,904 $14,806 0.54 0.62 0.79 

$19,907 $17,847 $14,762 0.57 0.66 0.84 

$19,629 $17,606 $14,576 0.60 0.69 0.87 

$19,314 $17,334 $14,368 0.76 0.87 1.11 

$18,927 $17,001 $14,116 0.96 1.10 1.40 

$18,750 $16,855 $14,017 1.28 1.46 1.87 

$18,708 $16,825 $14,005 1.52 1.74 2.23 

$18,506 $16,676 $13,935 2.51 2.87 3.66 

$18,552 $16,736 $14,017 3.22 3.68 4.71 

$18,605 $16,809 $14,118 4.18 4.78 6.10 

$18,753 $16,973 $14,309 5.41 6.19 7.90 

$18,921 $17,177 $14,566 6.87 7.86 10.04 

$19,135 $17,438 $14,895 7.93 9.08 11.59 

$19,803 $18,182 $15,752 12.37 14.16 18.08 

$19,757 $18,168 $15,789 13.01 14.89 19.02 

$19,957 $18,441 $16,170 13.91 15.93 20.34 
6/3/94

Life Cycle Cost for 5-ton Single Package System

Central Heat Pump

1-1

$20,200

$19,800

$19,400

$19,000

$17,800

$17,400

$17,000

$16,600

® 6% discount rate

EE-RM-93-801 COMMENT 0DD

$20,200 

0 

$19,800 

2 

$19,400 

3 

$19,000 

~ ---- $\8,600 -, .. 

~ 

1""'1 

'-" 

U U $18,200 ~ 

$17,800 

$17,400 

$17,000 

$16,600 

9.0 10.0 11.0 

6/3/94 

Life Cycle Cost for 5-ton Single Package System 

Central Heat Pump 

I -l1li-_ - 6% discount rate I 

18 

4 111111 19 

7 

8\0 

12.0 13.0 14.0 15.0 16.0 17.0 

SEER 

20 

18.0 19.0 
6/3/94

Life Cycle Cost for 5-ton Single Package System

Central Heat Pump

$23,000 -

$22,000 -

$21,000 -

$20,000

$19,000

$18,000

V3

$17,000

$16,000

$15,000

$14,000

$13,000

4% discount rate

- - 6% discount rate

10% discount rate

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16,0 17.0 18.0 19.0

SEER .

EE-RM-93-801 COMMENT 0DD

$23,000 

$22,000 -

$21,000 

$20,000 

-- $19,000 

~ 0\ 

C $18,000 

U 

U 

..:l $17,000 

$16,000 

$15,000 

$14,000 

$13,000 

9.0 10.0 11.0 

6/3/94 

Life Cycle Cost for 5-ton Single Package System 

Central Heat Pump 

--0-- 4% discount rate 

- - -6 - - 6% discount rate 

.... +, ' " 10% discount rate 

- ,+ 

- -. ~ , -+ , ' + • '- :. ': -~--."-:'- -, -, '. -. - -+ 

12.0 

+, .... ' 

-+- -... +. - - ..... + 

13.0 14.0 

SEER 

15.0 16.0 17.0 18.0 19.0 
Life Cycle Costs and Payback Periods of 5-ton, Split System Central Heat Pump

6/7/94

Incr. Installed Annual Elec Use Annual Cumul. Lifecycle Costs Cumulative

SEER HSPF Manufr Manufr Retail Mark Installation Maintenance Consumer Cooling Heating Energy Payback Cost of Conserved Energy

Level Design Option Cost Cost Cost Up cost cost Cost cost Period 19925 cents/kWh

Btuh/W Btuh/W (1992$) (19925 (1992$) (1992$ 1992$ 19925 kWh/yr kWh/ r 1992$ ears 4% 6% 10% 4% 6% 10%

0 Baseline 10.00 7.09 $934.00 - $2689.81 2.880 $1161.54 $46.69 $3898.04 5798 13,556 $1,640 NA $22,137 $19,830 $16,375 NA NA NA

1 0 + Backward Inclined Indoor Blower 10.30 7.21 $934.03 $0.03 $2691.21 2.881 $1161.54 $46.69 $3899.44 5629 13,328 $1,607 0.04 $21,765 $19,505 $16,121 0.07 0.09 0.11

2 1 + Indoor Coil Slit Fins 10.38 7.27 $934.25 $0.22 $2693.53 2.883 $1161.54 $46.69 $3901.76 5584 13,211 $1,593 0.08 $21,614 $19,374 $16,019 0.16 0.18 0.23

3 2 +Time Delay Relay 10.68 7.40 $940.75 $6.50 $2710.42 2.881 $1161.54 $46.69 $3918.65 5429 12,981 $1,560 0.26 $21,268 $19,074 $15,787 0.50 0.58 0.73

4 3 + Scroll Compressor. 11.30 EER 12.30 7.80 $965.13 $24.38 $2768.10 2.868 $1161.54 $46.69 $3976.33 4715 12,320 $1,444 0.40 $20,030 $18,000 $14,959 0.65 0.74 0.95

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 12.42 7.89 $971.43 $6.30 $2784.90 2.867 $1161.54 $39.08 $3985.52 4666 12,176 $1,428 0.41 $19,858 $17,851 $14,844 0.70 0.80 1.02

6 5 + Increase Indoor Coil Fin Density to 14 fpi 12.46 7.93 $973.16 $1.73 $2791.01 2.868 $1161.54 $39.08 $3991.63 4653 12,117 $1,421 0.43 $19,795 $17,796 $14,803 0.74 0.84 1.07

7 6 + More Efficient Indoor PSC Fan Motor (68.5%) 12.81 8.04 $982.92 $9.76 $2815.88 2.865 $1161.54 $31.47 $4008.89 4525 11,946 $1,396 0.45 $19,531 $17,568 $14,628 0.78 0.90 1.15

8 7+ Demand Defrost 12.81 8.29 $994.42 $11.50 $2844.81 2.861 $1161.54 $31.47 $4037.82 4525 11,598 $1,367 0.51 $19,232 $17,311 $14,432 0.99 1.13 1.44

9 8+Non-BleedfermostaticExpansion Valves 13.13 8.53 $1,016.08 $21.66 $2897.84 2.852 $1161.54 $31.47 $4090.85 4415 11,266 $1,329 0.62 $18,868 $17,000 $14,200 1.25 1.44 1.83

10 9 + Increase Indoor Coil Face Area to 7.50 sq.ft. 13.51 8.63 $1,033.92 $17.84 $2948.11 2.851 $1171.83 $31.47 $4151.41 4292 11,137 $1,308 (1.76 $18,692 $16,853 $14,098 1.51 1.73 2.21

11 10 + Outdoor Coil Grooved Tubes 13.71 8.66 $1,048.28 $14.36 $2992.32 2.854 $1171.83 $31.47 $4195.62 4229 11,102 $1,299 0.87 $18,643 $16,816 $14,079 1.71 1.95 2.49

12 11 + Increase Outdoor Coil Face Area to 27.30 sq.ft 14.17 8.89 $1,106.40 $58.12 $3148.10 2.845 $1224.17 $31.47 $4403.74 4093 10,807 $1,263 1.34 $18,445 $16,670 $14,010 2.67 3.05 3.90

13 12 + Electronic Expansion Valve 14.37 8.94 $1,154.74 $48.34 $3284.56 2.844 $1224.17 $40.45 $4549.18 4036 10,747 $1,253 1.68 $18,480 $16,718 $14,079 3.32 3.81 4.86

14 13 + Outdoor ECM Fan Motor 14.44 9.05 $1,227.44 $72.70 $3479.51 2.835 $1224.17 $48.06 $4751.74 4014 10,616 $1,240 2.13 $18,539 $16,795 $14,184 4.31 4.93 6.29

15 14 + Increase Outdoor Coil Face Area to 36.50 sq.ft 14.63 9.13 $1,295.30 $67.86 $3671.78 2.835 $1285.90 $48.06 $5005.74 3963 10,527 $1,228 2.69 $18,661 $16,934 $14,347 5.43 6.22 7.94

16 15 + Indoor ECM Fan Motor 15.35 9.22 $1,475.55 $180.25 $4136.36 2.803 $1285.90 $63.68 $5485.94 3778 10,419 $1,203 3.63 $18,865 $17,173 $14,638 7.07 8.09 10.33

17 16+Two-Speed Recip-CompressorSystem 16.98 9.23 $1,664.30 $188.75 $4648.97 2.793 $1285.90 $80.83 $6015.70 3415 10,409 $1,172 4.52 $19,043 $17,395 $14,927 7,99 9.15 11.68

18 16 + Variable-Speed Recip-Compressor System 17.16 9.78 $2,075.55 $600.00 $5762.25 2.776 $1285.90 $133.11 $7181.26 3378 9,831 $1,120 6.30 $19,629 $18,055 $15,697 12.20 13.97 17.84

19 16+TwoSpeedScroll-Compressor System 17.30 10.02 $1,975.55 $500.00 $5658.69 2.864 $1285.90 $128.74 $7073.33 3352 9,586 $1,097 5.84 $19,266 $17,724 $15,414 11.68 13.37 17.07 20 16 + Variable-Speed Scroll-Compressor System 19.16 10.31 $2,12555 $650.00 $6169.44 2.903 $1285.90 $135.29 $7590.63 3026 9,322 $1,047 6.22 $19,227 $17,755 $15,551 11.98 13.72 17.51

Assumptions:

1 Electricity cost = 0.085 $/kWh ( average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime = 15 years.

3 Baseline unit includes:

Indoor Coil: 6.00 sq.ft., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes

Outdoor Coil: 19.5 sq.ft., 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes

Compressor. Reciprocating, 10.49 EER (nominal); Accumulator

Indoor Fan Motor. PSC, 58.5% efficient

Outdoor Fan Motor. PSC, 55.0% efficient

Enhancement Devices: None

4 Maximum Sensible Heat Ratio = 76.5%

5 Non-Bleed Thermostatic Expansion Valves replace the need for a Time Delay Relay; Accumulator still required due to excess refrigerant.

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

7 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of S-ton, Split System Central Heat Pump 

Incr. Installed Annual Elec Use Annual Cumul. 

SEER HSPF Manufr Manufr Retail Mark Installation Maintenance Cunsumer Cooling Heating Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost Cost cost Period 

Btuh/W BtuhIW (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr kWh/yr (1992$) (years) 

0 Baseline 10.00 7.Ce $934.00 - $2689.81 2.880 $1161.54 $46.69 $3898.04 5798 13,556 $1,640 NA 

1 0+ Backward Inclined lodoor Blower 10.30 7.21 $934.03 $0.03 $2691.21 2.881 $1161.54 $46.69 $3899.44 5629 13,328 SI,607 0.04 

2 1 + Indoor Coil Slit Fins 10.38 7.27 S934.25 $0.22 $2693.53 2.883 $1161.54 $46.69 $3901.76 5584 13,211 $1,593 0.08 

3 2 + Time Delay Relay 10.68 7.40 $940.75 $6.50 S2710.42 2.881 $1161.54 $46.69 $3918.65 5429 12,981 $1,560 0.26 

4 3 + Scroll Compressor: 1 1.30 EER 12.30 7.80 $965.13 $24.38 $2768.10 2.868 $1161.54 S46.69 $3976.33 4715 12,320 $1,444 0.40 

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 12.42 7.89 S971.43 S6.3O $2784.90 2.867 $1161.54 $39.08 $3985.52 4666 12,176 $1,428 0.41 

6 5 + Increase Indoor Coil Fin Density to 14 fpi 12.46 7.93 $973.16 S1.73 S2791.01 2.868 $1161.54 $39.08 $3991.63 4653 12,117 SI,421 0.43 

7 6 + More Efficient Indoor PSC Fan Motor (68.5%) 12.81 8.04 S982.92 S9.76 $2815.88 2.865 $1161.54 $31.47 $4008.89 4525 11,946 $1,396 0.45 

8 7 + Demand Defrost 12.81 8.29 $994.42 SII.50 $2844.81 2.861 $1161.54 $31.47 $4037.82 4525 11,598 $1,367 0.51 

9 8 + Non-Bleed Thermoshltic Expansion Valves 13.13 8.53 $1,016.08 $21.66 $2897.84 2.852 $1161.54 $31.47 $4090.85 4415 11,266 SI,329 0.62 

10 9 + Increase Indoor Coil Flee Area to 7.50 sq.ft. 13.51 8.63 $1,033.92 $17.84 $2948.11 2.851 $1171.83 S31.47 $4151.41 4292 11,137 $1,308 0.76 

11 10+ Outdoor Coil Grooved Tubes 13.71 8.66 $1,048.28 $14.36 S2992.32 2.854 $1171.83 $31.47 $4195.62 4229 11,102 $1,299 0.87 

12 11 + Increase Outdoor Coil Face Area to 27.30 sq.ft 14.17 8.89 SI,106.4O $58.12 $3148.10 2.845 SI224.17 $31.47 $4403.74 4093 10,807 $1,263 1.34 

13 12 + Electronic Expansion Valve 14.37 8.94 $1,154.74 $48.34 $3284.56 2.844 SI224.17 $40.45 $4549.18 4036 10,747 $1,253 1.68 

14 13 + Outdoor ECM Fan Motor 14.44 9.05 $1,227.44 $72.70 $3479.51 2.835 S1224.17 $48.06 $4751.74 4014 10,616 $1,240 2.13 

15 14 + Increase Outdoor Coil Face Area to 36.50 sq.ft 14.63 9.13 SI,295.3O $67.86 S3671.78 2.835 $1285.90 S48.06 S5005.74 3963 10,527 $1,228 2.69 

16 15 + Indoor ECM Fan Motor 15.35 9.22 $1,475.55 $180.25 $4136.36 2.803 SI285.90 S63.68 $5485.94 3778 10,419 $1,203 3.63 

17 16 + Two-Speed Recip-Compressor System 16.98 9.23 SI,664.3O $188.75 $4648.97 2.793 $1285.90 $80.83 $6015.70 3415 10,409 $1,172 4.52 

18 16 + Variable-Speed Recip-Compressor System 17.16 9.78 $2,075.55 S6OO.00 $5762.25 2.776 $1285.90 SI33.11 $7181.26 3378 9,831 $1,120 6.30 

19 16 + Two-Speed Scroll-Compressor System 17.30 10.02 $1,975.55 S500.00 $5658.69 2.864 $1285.90 SI28.74 S7073.33 3352 9,586 $1,097 5.84 

20 16 + Variable-Speed Scroll-Compressor System 19.16 10.31 $2,125.55 $650.00 $6169.44 2.903 S1285.90 $135.29 $7590.63 3026 9,322 $1,047 6.22 

Assumptions' 

1 Electricity cost = 0.085 S/kWb (average cost in 1999 obtained from an interpolation of tbe 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWb (1991S) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment). 

2 Lifetime = 15 years. 

3 Baseline unit includes: 

Indoor Coil: 6.00 sq. ft., 13 fins/incb, Wavy Fins, 4 tube rows, Groove Tubes 

Outdoor Coil: 19.5 sq.ft., 20 fins/inch, Slit Fins, 2 tube rows, Smootb Tubes 

Compressor: Reciprocating, 10.49 EER (nominal); Accumulator 

Indoor Fan Motor: PSG, 58.5% efficient 

Outdoor Fan Motor: PSC, 55.0% efficient 

Enbancement Devices: None 

4 Maximum Sensible Heat Ratio = 76.5% 

5 Non-Bleed Thermostatic Expansion Valves replace the need for a Time Delay Relay; Accumulator still required due to excess refrigerant. 

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

7 Condenser ECM Fan Motor is run at a single speed. 

6/7/94 

Lifecycle Costs Cumulative 

Cost of Conserved Energy 

(1992S) (cenIs/kWb) 

4% 6% 10% 4% 6% 10% 

$22,137 S19,83O $16,375 NA NA NA 

$21,765 $19,505 $16,121 0.07 0.09 0.11 

$21,614 $19,374 $16,019 0.16 0.18 0.23 

$21,268 $19,074 S15,787 0.50 0.58 0.73 

$20,030 $18,000 $14,959 0.65 0.74 0.95 

$19,858 $17,851 $14,844 0.70 0.80 1.02 

$19,795 $17,796 $14,803 0.74 0.84 1.07 

$19,53~ $17,568 $14,628 0.78 0.90 1.15 

S19,23 $17,311 $14,432 0.99 1.13 1.44 

$18,868 $17,000 $14,200 1.25 1.44 1.83 

S18,692 $16,853 $14,098 1.51 1.73 2.21 

$18,643 $16,816 $14,079 1.71 1.95 2.49 

$18,445 $16,670 $14,010 2.67 3.05 3.90 

$18,480 $16,718 $14,079 3.32 3.81 4.86 

$18,539 $16,795 $14,184 4.31 4.93 6.29 

$18,661 $16,934 S14,347 5.43 6.22 7.94 

$18,865 $17,173 S14,638 7.07 8.09 10.33 

S19,043 S17,395 S14,927 7.99 9.15 11.68 

$19,629 S18,055 S15,697 12.20 13.97 17.84 

$19,266 S17,724 S15,414 11.68 13.37 17.07 

$19,227 $17,755 $15,551 11.98 13.72 17.51 
Life Cycle Costs and Payback Periods of 3-ton, Split System Central Heat Pump

6/7194

Incr. Installed Annual Elec Use Annual Cumul. Lifecycle Costs Cumulative

SEER HSPF Manufr Manufr Retail Mark Installation Maintenance consumer Cooling Heating Energy Payback Cost of Conserved Energy

Level Design Option Cost Cost Cost Up Cost Cost cost cost Period 19925 cents/kWh

Btuh/W Btuh/W 1992$) 1992$) (1992$) 1992$ 19925 (1992$) kWh/ YT kWh/ r 1992$ (years) 4% 6% 10% 4% 6% 10%

0 Baseline 10.00 6.89 $677.00 - $1757.89 2.597 $902.53 $46.69 $2707.11 3651 8,132 $999 NA $13,812 $12,407 $10,304 NA NA NA

1 0 + Backward Inclined Indoor Blower 10.30 7.00 $677.00 $0.00 $1759.13 2.598 $902.53 $46.69 $2708.35 3544 8,011 $979 0.06 $13,598 $12,221 $10,158 0.10 0.12 0.15

2 1 + Indoor Coil Slit Fins 10.43 7.11 $677.03 $0.03 $1760.61 2.600 $902.53 $46.69 $2709.83 3500 7,889 $965 0.08 $13,442 $12,085 $10,052 0.16 0.19 0.24

3 2 + Increase Indoor Coil Fin Density to 14 fpi 10.47 7.13 $677.69 $0.66 $1763.81 2.603 $902.53 $46.69 $2713.03 3486 7,858 $962 0.16 $13,403 $12,051 $10,026 0.32 0.37 0.47

4 3 + More Efficient Indoor PSC Fan Motor (68.5%) 10.72 7.22 $684.89 $7.20 $1780.72 2.600 $902.53 $39.08 $2722.33 3406 7,760 $946 0.29 $13,245 $11,914 $9,921 0.56 0.64 0.82

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 10.83 7.32 $691.19 $6.30 $1795.81 2.598 $902.53 $31.47 $2729.81 3372 7,658 $935 0.36 $13,124 $11,809 $9,840 0.73 0.84 1.07

6 5+Time Delay Relay 11.17 7.47 $697.69 $6.50 $1810.98 2.596 $902.53 $31.47 $2744.98 3268 7,506 $913 0.44 $12,899 $11,615 $9,691 0.89 1.02 1.30

7 6 + Reciprocating Compressor. 11.26 EER 11.69 7.68 $708.68 $10.99 $1835.54 2.590 $902.53 $31.47 $2769.54 3125 7,295 $883 0.54 $12,589 $11,347 $9,487 1.07 1.22 1.56

8 7 + Increase Indoor Coil Face Area to 4.97 sq.ft. 12.41 7.97 $722.05 $13.37 $1865.20 2.583 $912.27 $31.47 $2808.94 2941 7,037 $846 0.67 $12,212 $11,023 $9,242 1.29 1.48 1.89

9 8 + Demand Defrost 12.41 8.20 $733.55 $11.50 $1893.29 2.581 $912.27 $31.47 $2837.03' 2941 6,832 $828 0.76 $12,047 $10,882 $9,138 1 . 65 1.88 2.41

10 9 + Outdoor Coil Grooved Tubes 12.73 8.24 $740.52 $6.97 $1911.92 2.582 $912.27 $31.47 $2855.66 2869 6,803 $820 0.83 $11,971 $ 10,818 $9,091 1.71 1.96 2.50

11 10 + Increase Indoor Coil Face Area to 6.39 sq.ft. 13.12 8.40 $755.60 $15.08 $1947.94 2.578 $922.01 $31.47 $2901.42 2782 6,674 $802 0.99 $11,813 $10,686 $8,998 2.01 2.30 2.94

12 11 +Scroll Compressor. 11.50 EER 13.70 8.50 $774.58 $18.98 $1994.41 2.575 $922.01 $31.47 $2947.89 2665 6,591 $785 1.12 $11,671 $10,568 $8,915 2.20 2.51 3.21

13 12+Non- Bleed ThmnoataticExpansion Valves 14,04 8,73 $787.03 $12.45 $2026.71 2.575 $922,01 $31,47 $2980,19 26(X) 6,422 $765 1,17 $11,482 $10,407 $8,796 2.34 2,68 3,42

.14 13 + Increase Outdoor Coil Face Area to 21.(X) sq.f1. 1438 9.38) $811.89 $24.86 $21185.65 2.569 $962.27 $31.47 $3079.39 2471 6,184 $734 1.40 $11,236 $10,204 $8,659 2. 84 3.25 4.15

15 14 + Increase Indoor Coil Face Area to 7.50 sq.ft. 15.00 9.13 $822.19 $10.30 $2116.45 2.574 $969.88 $31.47 $3117.80 2434 6,139 $727 1.51 $11,197 $10,175 $8,645 3.03 3.47 4.44

16 15 + Increase Indoor Coil Tube Density to 4 rows 15.12 9.20 $844.58 $22.39 $2175.09 2.575 $969.88 $31.47 $3176.44 2416 6,092 $721 1.69 $11,194 $10,180 $8,661 3.42 3.91 4.99

17 16 + Increase Outdoor Coil Face Area to 30.00 sq.ft. 15.48 9.32 $890.19 $45.61 $2287.09 2.569 $1030.27 $31.47 $3348.83 2359 6,018 $710 2.22 $11,243 $10,244 $8,749 4.47 5.11 6.53

18 17 + Outdoor ECM Fan Motor 15.59 9.45 $962.89 $72.70 $2461.70 2.557 $1030.27 $39.08 $3531.05 2343 5,935 $702 2.77 $11,332 $10,345 58,868 5.66 6.48 8.28

19 18 + Electronic Expansion Valve 15.79 950 $1,011.23 $48.34 $2583.94 2.555 $1030.27 $48.06 $3662.27 2313 5,904 $696 3.16 $11,406 $10,426 58,960 6.42 7.35 9.38

20 19 + Indoor ECM Fan Motor 16.36 9.56 $1,152.53 $141.30 $2906.75 2.522 $1030.27 $63.68 $4000.70 2232 5,865 $686 4.14 $11,631 $10,666 $9,221 8.20 9.39 11.99

21 20+Two-Speed Recip-Compressor System 17.90 9.60 $1,332.79 $180.26 $3314.52 2.487 $1030.27 $77.62 $4422.41 2040 5,837 $668 5.18 $11,845 $10,906 $9,500 9.57 10.96 13.99

22 20+Variable-Speed Recip-CompressorSystem 18.24 10.01 $1,744.04 $591.51 $4230.16 2.425 $1030.27 $123.47 $5383.90 2002 5,601 $644 7.55 $12,549 $11,643 $10,286 14.60 16.71 21.34

23 20+Two-Speed Scroll-Compressor System 18.48 10.19 $1,644.04 $491.51 $4061.11 2.470 $1030.27 $119.10 $5210.48 1976 5,500 $634 6.86 $12,256 $11,365 $10,030 13.44 15.39 19.65

24 20+ Variable- Speed Scroll-Compressor System 20.83 11.01 $1,794.04 $641.51 $4426.08 2.467 $1030.27 $125.66 $5582.01 1753 5,089 $580 6.86 $12,030 $11,215 $9,993 13.62 15.59 19.91

j

k

Assumptions:

1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment),

2 Lifetime = 15 years.

3 Baseline unit includes:

Indoor Coil: 3.55 sq.ft., 13 fins/inch, Wavy Fins, 3 tube rows, Groove Tubes

Outdoor Coil: 15.00 sq.ft., 20 fins/inch, Slit Fins,1 tube row, Smooth Tubes

Compressor. Reciprocating, 10.80 EER (nominal); Accumulator

Indoor Fan Motor. PSC, 58.5% efficient

Outdoor Fan Motor. PSC, 55.0% efficient

Enhancement Devices: None

4 All Two-Speed and Variable-Speed Compressor Systems include an Accumulator.

5 Maximum Sensible Heat Ratio = 76.5%

6 Non-Bleed Thermostatic Expansion Valves replace the need for a Time Delay Relay and an Accumulator.

7 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

8 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

fL 

~ 

VM. 

Life Cycle Costs and Payback Periods of 3o ton, Split System Central Heat Pump 

Incr. Installed Annual Elec Use Annual Cumu!. 

SEER HSPF Manurr Manurr Retail Mark Installation Maintenance consumer Cooling Heating Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost cost cost Period 

BtuhIW BtuhIW (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWblyr kWblyr (1992$) (years) 

0 Baseline 10.00 6.89 $677.00 - $1757.89 2.597 $902.53 $46.69 $2707.11 3651 8,132 $999 NA 

1 0+ Backward Inclined Indoor Blower 10.30 7.00 $677.00 $0.00 $1759.13 2.598 $902.53 $46.69 $2708.35 3544 8,011 $979 0.06 

2 1 + Indoor Coil Slit Fins 10.43 7.11 $677.03 $0.03 $1760.61 2.600 $902.53 $46.69 $2709.83 3500 7,889 $965 0.08 

3 2 + Increase Indoor Coil Fin Density to 14 fpi 10.47 7.13 $677.69 $0.66 $1763.81 2.603 $902.53 $46.69 $2713.03 3486 7,858 $962 0.16 

4 3 + More Efficient Indoor PSC Fan Motor (68.5%) 10.72 7.22 $684.89 $7.20 $1780.72 2.600 $902.53 539.08 $2722.33 3406 7,760 $946 0.29 

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 10.83 7.32 $691.19 $6.30 $1795.81 2.598 $902.53 $31.47 $2729.81 3372 7,658 $935 0.36 

6 5 + Time Delay Relay 11.17 7.47 $697.69 $6.50 $1810.98 2.596 $90253 531.47 $2744.98 3268 7,506 $913 0.44 

7 6 + Reciprocating Compressor: 11.26 EER 11.69 7.68 $708.68 $10.99 $1835.54 2.590 $902.53 $31.47 $2769.54 3125 7,295 $883 0.54 

8 7 + Increase Indoor Coil Face Area to 4.97 sq.ft. '12.41 7.97 $722.05 $13.37 $1865.20 2.583 $912.27 $31.47 $2808.94 2941 7,037 $846 0.67 

. 9 8 + Demand Defrost 12.41 8.20 $733.55 $11.50 $1893.29 2.581 $912.27 531.47 $2837.03- 2941 6,832 $828 0.76 

10 9 + Outdoor Coil Grooved Tubes 12.73 8.24 $740.52 $6.97 $1911.92 2.582 $912.27 531.47 $2855.66 2869 6,803 $820 0.83 

11 10 + Increase Indoor Coil Face Area to 6.39 sq.ft. 13.12 8.40 $755.60 515.08 $1947.94 2.578 $92201 $31.47 $2901.42 2782 6,674 $802 0.99 

12 11 + &roll Compressor: 11.50 EER 13.70 8.50 $n4.58 518.98 $1994.41 2.575 $922.01 $31.47 $2947.89 2665 6,591 $785 1.12 

13 12 + Non·meed Th.rmoKtatlc Expo".lon V.lv", 14.()4 H.7] $787.03 $12.45 52026.71 2.575 5922.01 531.47 S2<)80.19 26W 6,422 $7115 1.17 

. 14 13 t InerelAe Outdoor Coil 1'.< .. Are. to 2UX) oq.fl . 14.78 9.06 $811.89 $24.86 $20115.65 2.569 $%2.27 $31.47 $307'1.3'1 2471 1>,IH4 $734 1.40 

15 14 + Increase Indoor Coil Face Area to 7.50 sq.ft. 15.00 9.13 $822.19 $)(1.30 $2116.45 2.574 $969.88 $31.47 $3117.80 2434 6,139 $727 1.51 

16 15 + Increase Indoor Coil Tube Density to 4 rows 15.12 9.20 $844.58 $22.39 $2175.09 2.575 $969.88 $31.47 $3176.44 2416 6,092 $721 1.69 

17 16 + Increase Outdoor Coil Face Area to 30.00 sq.ft. 15.48 9.32 $890.19 $45.61 $2287.09 2.569 $1030.27 $31.47 $3348.83 2359 6,018 $710 2.22 

18 17 + Outdoor ECM Fan Motor 15.59 9.45 $962.89 $72.70 $2461.70 2.557 $1030.27 $39.08 $3531.05 2343 5,935 $702 2.77 

19 18 + Electronic Expansion Valve 15.79 950 $1,011.23 $48.34 $2583.94 2.555 S1030.27 $48.06 $3662.27 2313 5,904 $6% 3.16 

20 19 + Indoor ECM Fan Molor 16.36 9.56 $1,152.53 $141.30 $2906.75 2.522 $1030.27 $63.68 $4000.70 2232 5,865 $686 4.14 

21 20 + Two-Speed Recip-Compressor System 17.90 9.60 $1,332.79 $180.26 $3314.52 2.487 $1030.27 $77.62 $4422.41 2040 5,837 $668 5.18 

22 20 + Variable-Speed Recip-Compressor System 18.24 10m $1,744.04 $591.51 $4230.16 2.425 $1030.27 $123.47 $5383.90 2002 5,601 $644 7.55 

23 20 + Two-Speed Scroll-Compressor System 18.48 10.19 $1,644.04 $491.51 $4061.11 2.470 $1030.27 $119.10 $5210.48 1976 5,500 $634 6.86 

24 20 + Variable-Speed Scroll-Compressor System 20.83 11.01 $1,794.04 $641.51 $4426.08 2.467 $1030.27 $125.66 $5582.01 1753 5,089 $580 6.86 

Assumptionsj 

1 Electricity cost = 0.085 SIkWb (average cost in 1999 obtained from an interpolation of tbe 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 donars). The interpolated value for 1999 is 0.082 $IkWb (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment). 

2 Ufetime = 15 years. 

3 Baseline unit includes: 

Indoor Coil: 3.55 sq. ft., 13 fins/incb, Wavy Fins, 3 tube rows, Groove Tube. 

Outdoor Coil: 15.00 sq.ft., 20 fins/incb, Slit Fins, 1 tube row, Smootb Tubes 

Compressor: Reciprocating, 10.80 EER (nominal); A=mulator 

Indoor Fan Motor: Psc, 58.5% efficient 

Outdoor Fan MoIor: PSC, 55.0% efficient 

Enhancement Devices: None 

4 All Two-Speed and Variable-Speed Compressor Systems include an A=mulator. 

5 Maximum Sensible Heat Ratio = 76.5% 

6 Non-Bleed Thermostatic Expansion Valves replace tbe need for a Time Delay Relay and an Accumulator. 

7 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

8 Condenser ECM Fan Motor is run at a single speed. 

6/7/94 

Ufecycle Costs Cumulative 

Cost of Conserved Energy 

(1992$) (cents/kWb) 

4% 6% 10% 4% 6% 10% 

$13,812 $12,407 $10,304 NA NA NA 

$13,598 $12,221 $10,158 0.10 0.12 0.15 

$13,442 $12,085 $10,052 0.16 0.19 0.24 

$13,403 $12,051 $10,026 0.32 0.37 0.47 

$13,245 $11,914 $9,921 0.56 0.64 0.82 

$13,124 $11,809 $9,840 0.73 0.84 1.07 

$12,899 $11,615 $9,691 0.89 1.02 1.30 

$12,589 $11,347 $9,487 1.07 1.22 1.56 

512,212 $11,023 $9,242 1.29 1.48 1.89 

512,047 $10,882 $9,138 1.65 1.88 2.41 

511,971 $10,818 S9,091 1.71 1.96 2.50 

$11,813 $10,686 $8,998 2.01 230 294 

$11,671 $10,568 $8,915 2.20 251 3.21 

$11,482 $10,41)7 SR,7Wi l.;l4 2,611 ),42 

$11,236 $1O,2()4 $I!,M'! 2.114 3,2$ 4.15 

$11,197 $10,175 $8,645 3.03 3.47 4.44 

$11,194 $10,180 $8,661 3.42 3.91 4.99 

$11,243 $10,244 $8,749 4.47 S.l1 6.53 

$11,332 $10,345 $8,868 5.66 6.48 8.28 

$11,406 $10,426 $8,960 6.42 7.35 9.38 

$11,631 $10,666 $9,221 8.20 9.39 11.99 

$11,845 $10,906 $9,500 9.57 10.96 13.99 

$12,549 $11,643 $10,286 14.60 16.71 21.34 

$12,256 $11,365 $10,030 13.44 15.39 19.65 

$12,030 $11,215 $9,993 13.62 15.59 19.91 
6/7/94

Life Cycle Cost for 3-ton Split System

Central Air Conditioner

$6,000

$5,800

$5,600

$5,400

$5,000

$4,800

$4,600

$4,400

$4,200 1 ' I

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0

SEER

EE-RM-93-801 COMMENT 0DD

$6,000 

$5,800 

$5,600 

$5,400 

~ ---- $5,200 0\ 

0\ 

~ 

--U U $5,000 ~ 

$4,800 

$4,600 

$4,400 

$4,200 

9.0 

6/7/94 

Life Cycle Cost for 3-ton Split System 

Central Air Conditioner 

l~- 6% discount rate] 

0 

1 

3 

5 14 

6 

9 

10 13 

10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 

SEER 

18 20 

19 

19.0 20.0 21.0 22.0 
6/7/94

Life Cycle Cost for 3-ton Split System

Central Air Conditioner

U

U

$6,200 T

$5,800

$5,400

$4,600

AzY

$4,200

$3,800 I i i i i i i i i i i i

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0

SEER

EE-RM-93-801 COMMENT 0DD

$6,200 T 

$5,800 

$5,400 

,-... 

fF7 

~ Q'I 

o $5,000 

U 

U 

~ 

$4,600 

$4,200 

$3,800 

9.0 10.0 11.0 

+ • .. 

6/7/94 

Life Cycle Cost for 3-ton Split System 

Central Air Conditioner 

-0-- 4% discount rate 

- .... 6-- _. 6% discount rate 

- ... +- - .. 10% discount rate 

• , 

,+ 

12.0 13.0 14.0 15.0 16.0 17.0 18.0 

SEER 

19.0 20.0 21.0 22.0 
6/7/94

Life Cycle Cost for 5-ton Split System

Central Air Conditioner

$9,000

$8,800

$8,600

$8,400

N

Al

CT

$8,200

$8,000

U

U

"4 $7,800

$7,600

$7,400

$7,200

$7,000

6% discount rate

I

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0

SEER

EE-RM-93-801 COMMENT 0DD

$9,000 

$8,800 

$8,600 

$8,400 

~ 

$8,200 

N 

~ 

~ 

o $8,000 

U 

U 

~ $7,800 

$7,600 

$7,400 

$7,200 

$7,000 

9.0 

6/7/94 

Life Cycle Cost for 5-ton Split System 

Central Air Conditioner 

I ~- 6% discount rate I 

0 

12 

14 

3 13 

4 

5 

6 8 

10.0 11.0 12.0 13.0 14.0 15.0 16.0 

SEER 

17 

18 19 

17.0 18.0 19.0 20.0 
6/7/94

$9,400

$9,000

$8,600

.$8,200

$7,800

U

a

$7,400

$7,000

$6,600

A n^ \&L, A/

-d

A

$6,200 1 i I i i i i i i i i I

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0

SEER

Life Cycle Cost for 5-ton Split System

Central Air Conditioner

4% discount rate

6% discount rate

10% discount rate

EE-RM-93-801 COMMENT 0DD

~ 

~ 

$9,400 T 

$9,000 

$8,600 

. $8,200 

c::7\ 

C $7,800 

U 

U 

~ 

$7,400 

$7,000 

$6,600 

$6,200 

9.0 

~I 

10.0 

6/7/94 

Life Cycle Cost for S-ton Split System 

Central Air Conditioner 

--0-- 4% discount rate 

--6- 6% discount rate 

• 10% discount rate 

11.0 12.0 13.0 

',' 

, , 

" ' '/ "," 

t'<"-- '- - --

• 

14.0 15.0 16.0 

SEER 

17.0 18.0 19.0 20.0 
6/7/94

Life Cycle Costs and Payback Periods of 5-ton , Split System Central Air Conditioner

Level Design Option

SEER Manufr

Cost

Ina.

Manufr

Cost

Retail

Cost

Mark

Up

Installed

Installation Maintenance Consumer

Cost Cost Cost

Annual

Elec.

use

Annual

Energy

cost

Cumul .

Payback

Period

Lifecycle Costs

(1992$)

Cumulative

Cost of Conserved Energy

(cents/kWh)

Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr (1992$) ears 4% 6% 10% 4% 6% 10%

0 Baseline 10.01 $666.00 - $1833.05 2.752 $1494.33 $46.69 $3374.07 5783 $490 NA $8,824 $8,134 $7,102 NA NA NA

1 0 + Backward Inclined Indoor Blower 10.29 $666.02 $0.02 $1834.12 2.754 $1494.33 $46.69 $3375.14 5625 $477 0.08 $8,676 $8,006 $7,002 0.06 0.07 0.09

2 1 + Evaporator Slit Fins 10.38 $666.23 $0.21 $1836.31 2.756 $1494.33 $46.69 $3377.33 5576 $473 0.19 $8,632 $7,968 $6,972 0.14 0.16 0.21

3 2 + Scroll Compressor: 11.30 EER 11.88 $690.87 $24.64 $1890.16 2.736 $1494.33 $46.69 $3431.18 4871 $413 0.74 $8,022 $7,441 $6,572 0.56 0.65 0.82

4 3 +Time Delay Relay 12.34 $697.37 $6.50 $1905.87 2.733 $1494.33 $46.69 $3446.89 4689 $397 0.79 $7f866 $7,307 $6,470 0.60 0.69 0.88

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 12.65 $707.14 $9.77 $1929.49 2.729 $1494.33 $39.08 $3462.90 4573 $388 0.87 $7,773 $7,227 $6,411 0.66 0.76 0.97

6 5 + Non-BleedThermostatic Expansion Valve 12.97 $714.72 $7.58 $1948.13 2.726 $1494.33 $39.08 $3481.54 4462 $378 0.96 $7,686 $7,154 $6,358 0.73 0.84 1.07

7 6 + More Efficient Condenser PSC Fan Motor (65.0%) 13.09 $721.02 $6.30 $1964.29 2.724 $1494.33 $31.47 $3490.09 4420 $375 1.00 $7,656 $7,129 $6,340 0.77 0.88 1.12

8 7 + Increase Evaporator Fin Density to 14 fpi 13.14 $722.48 $1.46 $1969.55 2.726 $1494.33 $31.47 $3495.35 4405 $373 1.04 $7,647 $7,122 $6,335 0.79 0.91 1.16

9 8 + Increase Evaporator Face Area to 7.50 sq.ft. 13.53 $739.70 $17.22 $2009.98 2.717 $1504.62 $31.47 $3546.07 4276 $362 1.35 $7,575 $7,066 $6,303 1 .03 1.18 1.50

10 9 + Condenser Grooved Tubes 13.69 $756.52 $16.82 $2051.87 2.712 $1504.62 $31.47 $3587.96 4226 $358 1.62 $7,570 $7,067 $6,312 1.24 1.41 1.81

11 10 + Increase Condenser Face Area to 27.60 sq.ft. 13.95 $788.74 $32.22 $2128.62 2.699 $1535.49 $31.47 $3695.58 4148 $352 2.32 $7,605 $7,110 $6,370 1.77 2.03 2.59

12 11 + Increase Condenser Face Area to 36.50 sq.ft. 14.22 $850.40 $61.66 $2274.73 2.675 $1595.21 $31.47 $3901.41 4069 $345 3.63 $7,736 $7,251 $6,525 2.77 3.17 4.05

13 12 + Evaporator ECM Fan Motor 14.84 $1,030.66 $180.26 $2695.83 2.616 $1595.21 $47.09 $4338.13 3899 $330 6.04 $8,012 $7,548 $6,852 4.60 5.27 6.73

14 13 + Electronic Expansion Valve 15.04 $1,106.83 $76.17 $2880.06 2.602 $1595.21 $56.07 $4531.34 3847 $326 7.05 $8,157 $7,698 $7,011 5.38 6.16 7.86

15 14 + Condenser ECM Fan Motor 15.11 $1,179.53 $72.70 $3056.88 2.592 $1595.21 $63.68 $4715.77 3830 $325 8.11 $8,325 $7,869 $7,185 6.18 7.07 9.03

16 15 + TWO-Speed Recip-Compressor System 16.76 $1,368.28 $188.75 $3496.03 2.555 $1595.21 $80.54 $5171.78 3452 $293 9.10 $8,425 $8,013 $7,397 6.94 7,94 10.14

17 15 + Variable-Speed Recip-Compressor System P.., 17.6 $1,779.53 $600.00 $4452.32 2.502 $1595.21 $132.24 $6179.77 3275 $278 13.20 $9,267 $8,876 $8,291 10.06 11 .52 14.71

18 15 + Two-Speed Scroll Compressor System ( .Z; $1,679.53 $500.00 $4261.19 2.537 $1595.21 $127.87 $5984.27 3400 $288 12.92 $9,188 $8,783 $8,176 9.85 11.28 14.40

19 15 + Variable- Speed Scroll-Com ressor System 19.62 $1,829.53 $650.00 $4632.72 2.532 $1595.21 $134.43 $6362.36 2949 $250 12.44 $9,141 $8,790 $8,263 9.48 10.86 13.86

Assumptions:

1 Electricity cost= 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE'S Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime = 15 years.

3 Baseline unit includes:

Evaporator: 6.00 sq.ft., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes

Condenser: 23.00 sq.ft., 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes

Compressor : Reciprocating, 10.49 EER (nominal); Accumulator

Evaporator Fan Motor : PSC, 58.5% efficient

Condenser Fan Motor: PSC, 55.0% efficient

Enhancement Devices: None

4 Non-Bleed Thermostatic Expansion Valve replaces the need for a Time Delay Relay.

5 Maximum Sensible Heat Ratio = 76.5%

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

7 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of S-ton, Spilt System Central Air Conditioner 

Incr. Installed Annual Annual Cumul. Lifecycle Costs 

SEER Manufr Manufr Retail Mark Installation Maintenance Consumer Elec. Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost Cost use cost Period (1992$) 

Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr (19925) (years) 4% 6% 10% 

0 Baseline 10.01 $666.00 - $1833.05 2.752 $1494.33 $46.69 $3374.07 5783 $490 NA $8,824 $8,134 $7,102 

1 0+ Backward Inclined Indoor Blower 10.29 $666.02 $0.02 $1834.12 2.754 $1494.33 $46.69 $3375.14 5625 5477 0.08 $8,676 $8,006 $7,002 

2 1 + Evaporator Slit Fins to.38 $666.23 $0.21 $1836.31 2.756 $1494.33 $46.69 $3377.33 5576 $473 0.19 $8,632 $7,%8 $6,972 

3 2 + Scroll Compressor: 11.30 EER 11.88 $690.87 $24.64 $1890.16 2.736 $1494.33 $46.69 $3431.18 4871 $413 0.74 $8,022 $7,441 $6,572 

4 3 + Time Delay Relay 12.34 $697.37 $6.50 51905.87 2.733 $1494.33 $46.69 $3446.89 4689 $397 0.79 $7~866 57,307 $6,470 

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 12.65 $707.14 $9.77 $1929.49 2.729 $1494.33 $39.08 - $3462.90 4573 53!!!! 0.87 $7,773 $7,227 $6,411 

6 5 + Non-Bleed Thermostatic Expansion Valve 12.97 $714.72 57.58 $1948.13 2.726 $1494.33 $39.08 $3481.54 4462 $378 0.% $7,686 $7,154 $6,358 

7 6 + More Efficient Condenser PSC Fan Motor (65.0%) 13.09 $721.02 $6.30 $1%4.29 2.724 $1494.33 $31.47 $3490.09 4420 $375 1.00 57,656 $7,129 $6,340 

8 7 + Increase Evaporator Fin Density to 14 fpi 13.14 $722.48 $1.46 $1%9.55 2.726 $1494.33 $31.47 $3495.35 4405 $373 1.04 $7,647 $7,122 $6,335 

9 8 + Increase Evaporator Face Area to 7.50 sq.ft. 13.53 $739.70 $17.22 $,2009.98 2.717 $1504.62 $31.47 $3546.07 4276 $362 1.35 $7,575 $7,066 $6,303 

10 9 + Condenser Grooved Tubes 13.69 S756.52 $16.82 S2051.87 2.712 $1504.62 $31.47 $3587.96 4226 $358 1.62 $7,570 $7,067 $6,312 

11 10 + Increase Condenser Face Area to 27.60 sq.ft. 13.95 $788.74 $32.22 $2128.62 2.699 $1535.49 $31.47 $3695.58 4148 $352 2.32 $7,605 $7,1 to $6,370 

12 11 + Increase Condenser Face Area to 36.50 sq.ft. 14.22 $850.40 $61.66 $2274.73 2.675 51595.21 $31.47 $3901.41 4069 $345 3.63 $7,736 $7,251 56,525 

13 12 + Evaporator ECM Fan Motor 14.84 $1,030.66 $180.26 52695.83 2.616 $1595.21 $47.09 $4338.13 3899 $330 6.04 58,012 57,548 $6,852 

14 13 + Electronic Expansion Valve 15.04 51,106.83 $76.17 $2880.06 2.602 $1595.21 $56.07 $4531.34 3847 $326 7.05 58,157 57,698 $7,011 

15 14 + Condenser ECM Fan Motor 15.11 51,179.53 572.70 $3056.88 2.592 $1595.21 $63.68 $4715.77 3830 $325 8.11 $8,325 $7,869 $7,185 

16 15 + Two-Speed Recip-Compressor System 16.76 51,368.28 $188.75 $34%.03 2.555 $1595.21 $80.54 $5171.78 3452 5293 9.10 $8,425 58,013 $7,397 

17 15 + Variable-Speed Recip-Compressor System ? ~ $1,779.53 5600.00 $4452.32 2.502 $1595.21 $132.24 $6179.77 3275 $278 13.20 $9,267 $8,876 58,291 

18 15 + Two-Speed Scroll-Compressor System It.fz $1,679.53 $500.00 $4261.19 2.537 $1595.21 $127.87 $5984.27 3400 $288 12.92 $9,188 $8,783 $8,176 

19 15 + Variable-Speed Scroll-Compressor System ( $1,829.53 $650.00 $4632.72 2.532 $1595.21 $134.43 $6362.36 2949 $250 12.44 $9,141 $8,790 $8,263 

\ 

Assumptjons: 

1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment). 

2 Ufetime = 15 years. 

3 Baseline unit includes: 

Evaporator: 6.00 sq.ft., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes 

Condenser: 23.00 sq.ft., 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes 

Compressor: Reciprocating, 10.49 EER (nominal); Accumulator 

Evaporator Fan Motor: PSC, 58.5% efficient 

Condenser Fan Motor: PSC, 55.0% efficient 

Enhancement Devices: None 

4 Non-Bleed Thermostatic Expansion Valve replaces the need for a Time Delay Relay. 

5 Maximum Sensible Heat Ratio = 76.5% 

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

7 Condenser ECM Fan Motor is run at a single speed. 

6/7/94 

Cumulative 

Cost of Conserved Energy 

(cents/kWh) 

4% 6% 10% 

NA NA NA 

0.06 0.07 0.09 

0.14 0.16 0.21 

0.56 0.65 0.82 

0.60 0.69 0.88 

0.66 0.76 0.97 

0.73 0.84 1.07 

0.77 0.88 1.12 

0.79 0.91 1.16 

1.03 1.18 1.50 

1.24 l.4i 1.81 

1.77 2.03 2.59 

2.77 3.17 4.05 

4.60 5.27 6.73 

5.38 6.16 7.86 

6.18 7.07 9.03 

6.94 7.94 10.14 

10.06 11.52 14.71 

9.85 11.28 14.40 

9.48 10.86 13.86 
6/7/94

Life Cycle Cost for 3-ton Split System

Central Heat Pump

$12,500

$12,000

$10,500

$10,000 i }

15

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0

SEER

EE-RM-93-801 COMMENT 0DD

$12,500 0 

$12,000 

6 

$11,500 ~ ~ 7 

=-. 

=-. 

,....j 

U --

U 

~ $11,000 

9 

$10,500 

$10,000 

9.0 10.0 11.0 12.0 

6/7/94 

Life Cycle Cost for 3-ton Split System 

Central Heat Pump 

6% discount rate 

10 

11 

12 20 

13 

19 

17 

15 

13.0 14.0 15.0 16.0 17.0 

SEER 

22 

23 

24 

18.0 19.0 20.0 21.0 
6/7/94

Life Cycle Cost for 3-ton Split System

Central Heat Pump

$14,000

$13,500

$13,000

$12,500

$12,000

$10,500

$10,000

$9,500

$9,000

$8,500

A

-®

- 4% discount rate

- 6% discount rate

10% discount rate

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0

SEER

,O

17.0 18.0 19.0 20.0 21.0

EE-RM-93-801 COMMENT 0DD

$14,000 

$13,500 

$13,000 

$12,500 

$12,000 

~ 

~ $11,500 

<.:l'I 

..... 

--U $11,000 U 

~ 

$10,500 

$10,000 

$9,500 

$9,000 

$8,500 

9.0 10.0 11.0 12.0 

6/7/94 

Life Cycle Cost for 3-ton Split System 

Central Heat Pump 

~ 4% discount rate 

- -6. - - 6% discount rate 

- -+- - - - 10% discount rate 

, , 

13.0 14.0 15.0 16.0 17.0 

SEER 

- -+ 

18.0 19.0 20.0 21.0 
6/7/94

Life Cycle Costs and Payback Periods of 3-ton, Split System Central Air Conditioner

Level Design Option

SEER Manufr

Cost

Incr.

Manufr

Cost

Retail

Cost

Mark

Up

Installed

Installation Maintenance Consumer

Cost Cost Cost

Annual

Elec.

use

Annual

Energy

cast

Cumul.

Payback

Period

Lifecycle Costs

(1992$)

Cumulative

Cost of Conserved Energy

(cents/kWh)

Btuh/W 1992$ (1992$) (1992$) (1992$) 1992$ (1992$) kWh/yr (1992$) ears 4% 6% 10% 4% 6% 10%

0 Baseline 10.00 $474.00 - $1,142.32 2.410 $972.71 $46.69 $2161.72 3427 $290 NA $5,392 $4,983 $4,371 NA NA NA

1 0 + Backward Inclined Indoor Blower 10.28 $474.04 $0.04 $1,143.33 2.412 $972.71 $46.69 $2162.73 3337 $283 0.13 55,308 $4,910 $4,314 0.10 0.12 0.15

2 1 + Evaporator Slit Fins 10.40 $474.13 $0.09 $1,144.90 2.415 $972.71 $46.69 $2164.30 3297 $279 0.23 $5,271 $4,878 $4,290 0.18 0.20 0.26

3 2+ Reciprocating Compressor : 10.91 EER 11.34 $481.51 $7.38 $1,158.88 2.407 $972.71 $46.69 $2178.28 3025 $256 0.49 $5,029 $4,668 $4,128 0.37 0.42 0.54

4 3 + More Efficient Condenser PSC Fan Motor (65.0%) 11.47 $486.46 $4.95 $1,170.23 2.406 $972.71 $39.08 $2182.02 2990 $253 0.55 $5,000 $4,643 $4,110 0.42 0.48 0.61

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 11.73 $493.68 $7.22 $1,185.81 2.402 $972.71 $31.47 $2189.99 2922 $248 0.66 $4,944 $4,596 $4,074 0.50 0.58 0.74

6 5 + Time Delay Relay 12. 18 $500.18 $6.50 $1,199.59 2.398 $972.71 $31.47 $2203.77 2815 $239 0.81 $4,857 $4,521 $4,019 0.62 0.71 0.90

7 6 + Condenser Grooved Tubes 12.62 $506.13 $5.95 $1,212.33 2.395 $972.71 $31.47 $2216.51 2716 $230 0.91 $4,776 $4,452 $3,968 0.69 0.79 1.01

8 7 + Increase Evaporator Fin Densi 12,68 $506.88 $0.75 $1,215.50 2.398 $972.71 $31.47 $2219.68 2704 $229 0.95 $4,768 $4,446 $3,963 0.72 0.83 1.05

9 8 + Scroll Compressor : 11.50 EERiBleed TXV 13.51 $543.29 $36.41 $1,288.56 2.372 $972.71 $31.47 $2292.74 2538 $215 1.74 $4,684 $4,382 $3,929 1.32 1.52 1.94

10 9 + Increase Evaporator Face Area to 6..ft. 14.40 $565.51 $22.22 $1,332.25 2.356 $989.69 $31.47 $2353.41 2381 $202 2.16 $4,598 $4,314 $3,889 1.65 1.89 2.41

11 10 + Increase Condenser Face Area to 18.03 sq.ft. 15.19 $586.24 $20.73 $1,373.53 2.343 $1024.25 $31.47 $2429.25 2257 $191 2.70 $4,556 $4,287 $3,884 2.06 2.35 3.01

12 11 + Increase Evaporator Face Area to 7.50 sq.ft. 15.37 $594.35 $8.11 $1,392.17 2.342 $1030.42 $31.47 $2454.06 2230 $189 2.88 $4,556 $4,290 $3,892 2.20 2.51 3.21

13 12 + Increase Condenser Face Area to 28.33 sq.ft. 15.82 $635.95 $41.60 $1,475.33 2.320 $1099.53 $31.47 $2606.33 2167 $184 4.16 $4,649 $4,391 $4,004 3.17 3.63 4.64

14 13 + Evaporator ECM Fan Motor 16.40 $777.26 $141.31 $1,761.91 2.267 $1099.53 $47.09 $2908.53 2091 $177 6.59 $4,879 $4,630 $4,256 5.03 5.75 7.35

15 14 + Electronic Expansion Valve 16.60 $853.43 $76.17 $1,918.71 2.248 $1099.53 $56.07 $3074.31 2066 $175 7.91 $5,021 $4,775 $4,406 6.03 6.90 8.81

16 15 + Condenser ECM Fan Motor 16.75 $919.98 $66.55 $2,056.58 2.235 $1099.53 $63.68 $3219.79 2047 $173 9.04 $5,149 $4,905 $4,539 6.89 7.89 10.08

17 16 + Two-Speed Recip-Compressor System 18.20 $1,100.67 $180.69 $2,416.75 2.196 $1099.53 $76.66 $3592.94 1884 $160 10.94 $5,368 $5,144 $4,808 8.34 9.55 12.19

18 16 + Variable-Speed Recip-Compressor System 18.58 $1,511.92 $591.94 $3,235.90 2.140 $1099.53 $120.59 $4456.02 1846 $156 17.11 $6,195 $5,975 $5,646 13.05 14.93 19.07

19 16 +TwoSpeed Scroll-Compressor System 18.91 $1,411.92 $491.94 $3,051.09 2.161 $1099.53 $116.22 $4266.84 1814 $154 15.39 $5,976 $5,760 $5,436 11.73 13.43 17.15

20 16 + Variable- Speed Scroll-Compressor System 21.18 $1,561.92 $641.94 $3,357.10 2.149 $1099.53 $122.78 $4579.41 1619 $137 15.77 $6,105 $5,912 $5,623 12.02 13.76 17.58

Assumptions:

1 Electricity cost= 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime = 15 years.

3 Baseline unit includes:

Evaporator: 4.13 sq.ft., 13 fins/inch, Wavy Fins, 3 tube rows, Groove Tubes

Condenser: 12.88 sq.ft., 20 fins/inch, Slit Fins, 1 tube row, Smooth Tubes

Compressor: Reciprocating, 10.20 EER (nominal)

Evaporator Fan Motor: PSC, 58.5% efficient

Condenser Fan Motor: PSC, 55.0% efficient

Enhancement Devices: None

4 Non-Bleed Thermostatic Expansion Valve replaces the need for a Time Delay Relay

5 Maximum Sensible Heat Ratio = 76.5%

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

7 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of 3-ton, Split System Central Air Conditioner 

Incr. Installed Annual Annual Cumu!. Lifecycle Costs 

SEER Manufr Manufr Retail Mark Installation Maintenance Consumer Elec. Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost Cost use cost Period (1992$) 

BtuhIW (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr (1992$) (years) 4% 6% 10% 

0 Baseline 10.00 $474.00 - $1,142.32 2.410 $972.71 $46.69 $2161.72 3427 $290 NA $5,392 $4,983 $4,371 

1 o + Backward Inclined Indoor Blower 10.28 $474.04 $0.04 $1,143.33 2.412 $972.71 $46.69 $2162.73 3337 $283 0.13 $5,308 $4,910 $4,314 

2 1 + Evaporator Slit Fins 10.40 $474.13 $0.09 $1,144.90 2.415 $972.71 $46.69 $2164.30 3297 $279 0.23 $5,271 $4,878 $4,290 

3 2 + Reciprocating Compressor: 10.91 EER 11.34 $481.51 $7.38 $1,158.88 2.407 $972.71 $46.69 $2178.28 3025 $256 0.49 $5,029 $4,668 $4,128 

4 3 + More Efficient Condenser PSC Fan Motor (65.0%) 11.47 S486.46 $4.95 $1,170.23 2.406 $972.71 S39.08 $2182.02 2990 $253 0.55 $5,000 $4,643 $4,110 

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 11.73 $493.68 $7.22 $1,185.81 2.402 $972.71 $31.47 $2189.99 2922 $248 0.66 $4,944 $4,5% $4,074 

6 5 + Time Delay Relay 12.18 $500.18 $6.50 $1,199.59 2.398 S972.71 $31.47 $2203.77 2815 $239 0.81 $4,857 $4,521 $4,019 

7 6 + Condenser Grooved Tubes 12.62 $506.13 $5.95 SI,212.33 2.395 $972.71 $31.47 $2216.51 2716 $230 0.91 $4,776 $4,452 $3,%8 

8 7 + Increase Evaporator Fin Densitv to. !Lfn; 12.68 S506.88 SO.75 $1,215.50 2.398 $972.71 $31.47 S2219.68 2704 $229 0.95 $4,768 $4,446 $3,%3 

9 8 + Scroll Compressor: 11.50 EER:'/~-BI;~ 13.51 S543.29 $36.41 SI,288.56 2.372 $972.71 $31.47 $2292.74 2538 $215 1.74 $4,684 $4,382 $3,929 

10 9 + Increase Evaporator Face Area to 6.bOS<j.ft. 14.40 $565.51 $22.22 $1,332.25 2.356 $989.69 $31.47 $2353.41 2381 $202 2.16 $4,598 $4,314 $3,889 

11 10 + Increase Condenser Face Area to 18.03 sq.ft. 15.19 $586.24 $20.73 $1,373.53 2.343 $1024.25 $31.47 $2429.25 2257 $191 2.70 $4,556 $4,287 $3,884 

12 11 + Increase Evaporator Face Area to 7.50 sq.ft. 15.37 $594.35 $8.11 $1,392.17 2.342 $1030.42 $31.47 $2454.06 2230 $189 2.88 $4,556 $4,290 $3,892 

13 12 + Increase Condenser Face Area to 28.33 sq.ft. 15.82 $635.95 S41.60 $1,475.33 2.320 $1099.53 $31.47 $2606.33 2167 $184 4.16 $4,649 $4,391 $4,004 

14 13 + Evaporator ECM Fan Motor 16.40 $777.26 $141.31 $1,761.91 2.267 $1099.53 $47.09 $2908.53 2091 $177 6.59 $4,879 $4,630 $4,256 

15 14 + Electronic Expansion Valve 16.60 $853.43 $76.17 $1,918.71 2.248 $1099.53 $56.07 $3074.31 2066 $175 7.91 $5,021 $4,775 $4,406 

16 15 + Condenser ECM Fan Motor 16.75 $919.98 $66.55 $2,056.58 2.235 $1099.53 $63.68 S3219.79 2047 S173 9.04 $5,149 $4,905 $4,539 

17 16 + Two-Speed Recip-Compressor System 18.20 $1,100.67 $180.69 $2,416.75 2.1% $1099.53 $76.66 $3592.94 1884 S160 10.94 $5,368 $5,144 $4,808 

18 16 + Variable-Speed Recip-Compressor System 18.58 $1,511.92 $591.94 $3,235.90 2.140 $ Hi99.53 $120.59 $4456.02 1846 $156 17.11 $6,195 $5,975 $5,646 

19 16 + Two-Speed Scroll-Compressor System 18.91 $1,411.92 $491.94 $3,051.09 2.161 $1099.53 $116.22 $4266.84 1814 $154 15.39 S5,976 S5,760 $5,436 

20 16 + Variable-Speed Scroll-Compressor System 21.18 $1,561.92 $641.94 $3,357.10 2.149 $1099.53 $122.78 $4579.41 1619 $137 15.77 $6,105 $5,912 $5,623 

A5sumptions: 

1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 $(KWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price end use factor for CAC is 1.0 (no adjustment). 

2 Lifetime = 15 years. 

3 Baseline unit includes: 

Evaporator: 4.13 sq.ft., 13 fins/incb, Wavy Fins, 3 tube rows, Groove Tubes 

Condenser: 12.88 sq.ft., 20 fins/inch, Slit Fins, 1 tube row, Smooth Tubes 

Compressor: Reciprocating, 10.20 EER (nominal) 

Evaporator Fan Motor: PSC, 58.5% efficient 

Condenser Fan Motor: PSC, 55.0% efficient 

Enhancement Devices: None 

4 Non-Bleed Thermostatic Expansion Valve replaces the need for a Time Delay Relay 

5 Maximum Sensible Heat Ratio = 76.5% 

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

7 Condenser ECM Fan Motor is run at a single speed. 

6/7/94 

Cumulative 

Cost of Conserved Energy 

(cents/lc Wh) 

4% 6% 10% 

NA NA NA 

0.10 0.12 0.15 

0.18 0.20 0.26 

0.37 0.42 0.54 

0.42 0.48 0.61 

0.50 0.58 0.74 

0.62 0.71 0.90 

0.69 0.79 1.01 

0.72 0.83 1.05 

1.32 1.52 1.94 

1.65 1.89 2.41 

2.06 2.35 3.01 

2.20 2.51 3.21 

3.17 3.63 4.64 

5.03 5.75 7.35 

6.03 6.90 8.81 

6.89 7.89 10.08 

8.34 9.55 12.19 

13.05 14.93 19.07 

11.73 13.43 17.15 

12.02 13.76 17.58 
6/7/94

Life Cycle Cost for 5-ton Split System

Central Heat Pump

$20,000

$19,500

$19,000

N $18,500

ON

U

*U $18,000

0

20

$17,500

$17,000

$16,500 ' i

I I I

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0

SEER

EE-RM-93-801 COMMENT 0DD

$20,000 o 

$19,500 \ ~2 

3 

$19,000 

~ $18,500 

Q\ 

Q\ 

.-I 

'-" 

U 

~ $18,000 

$17,500 

$17,000 

$16,500 

9.0 10.0 11.0 

6/7/94 

Life Cycle Cost for 5-ton Split System 

Central Heat Pump 

4 

7 

12.0 13.0 14.0 15.0 16.0 

SEER 

18 

19 20 

17.0 18.0 19.0 20.0 
6/7/94

Life Cycle Cost for 5-ton Split System

Central Heat Pump

$22,500

$21,500

$20,500

$19,500

11-1

a $18,500

Cs

U $17,500

$16,500

$15,500

$14,500

o---oo--_o4o

$13,500 1 ' ' i i i I

q- 4% discount rate

- - 6% discount rate

- - .. 10% discount rate

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0

SEER

EE-RM-93-801 COMMENT 0DD

$22,500 

$21,500 

$20,500 

$19,500 

,.-... 

fA. 

~ $18,500 

Q\ 

"...j 

'-' 

U 

U $17,500 ~ 

$16,500 .. 

$15,500 

$14,500 

$13,500 

9.0 10.0 11.0 

6/7/94 

Life Cycle Cost for 5-ton Split System 

Central Heat Pump 

-0----- 4% discount rate 

- - 6. - - 6% discount rate 

- - --.- - - - 10% discount rate 

---------------------------------' 

1..----

_-----------------·---0 

--. 

..-- .---A..A. .... .......... - - - ...... 

12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 

SEER 
6/7/94

Life Cycle Costs and Payback Periods of 3-ton, Single Package System Central Air Conditioner

Level Design Option

SEER Manufr

Cost

Incr.

Manufr

Cost

Retail

Cost

Mark

Up

Installed

Installation Maintenance Consumer

Cost Cost cost

Annual

Elec.

use

Annual

Energy

cost

Cumul.

Payback

Period

Lifecycle Costs

(1992$)

Cumulative

Cost of Conserved Energy

(cents/kWh)

Btuh/W (1992$) (1992$) (1992$) 1992$ (1992$) 1992$ kWh/yr 1992$ ears 4% 6% 10% 4% 6% 10%

0 Baseline 9.70 $474.00 - $919.59 1.940 $1968.37 $46.69 $2934.65 3533 $299 NA $6,264 $5,843 $5,213 NA NA NA

1 0 + Backward Inclined Indoor Blower 9.97 $474.04 $0.04 $920.39 1.942 $1968.37 $46.69 $2935.45 3440 $292 0.10 $6,177 $5,767 $5,153 0.08 0.09 0.11

2 1 + Evaporator Slit Fins 10.09 $474.13 $0.09 $921.66 1.944 $1968.37 $46.69 $2936.72 3399 $288 0.18 $6,140 $5,734 $5,128 0.14 0.16 0.20

3 2 + Reciprocating Compressor: 10.91 EER 11.00 $481.51 $7.38 $932.92 1.937 $1968.37 $46.69 $2947.98 3118 $264 0.38 $5,887 $5,515 $4,958 0.29 0.33 0.42

4 3 + More Efficient Condenser PSC Fan Motor (65.0%) 11.12 $486.46 $4.95 $942.05 1.937 $1968.37 $39.08 $2949.50 3083 $261 0.39 $5,t§54 $5,487 $4,937 0.30 0.34 0.43

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 11.38 $493.68 $7.22 $954.60 1.934 $1968.37 $31.47 .$2954.44 3013 $255 0.45 $5,793 $5,434 $4,897 0.34 0.39 0.50

6 5 +Time Delay Relay 11.81 $500.18 $6.50 $965.69 1.931 $1968.37 $31.47 $2965.53 2902 $246 0.58 $5,701 $5,355 $4,837 0.44 0.50 0.64

7 6 + Condenser Grooved Tubes 12.25 $506.13 $5.95 $975.95 1.928 $1968.37 $31.47 $2975.79 2800 $237 0.66 $5,615 $5,281 $4,781 0.50 0.58 0.74

8 7 + Increase Evaporator Fin Density to 14 fpl 12.30 $506.88 $0.75 $978.49 1.930 $1968.37 $31.47 $2978.33 2788 $236 0.69 $5,606 $5,273 $4,776 0.53 0.60 0.77

9 8 + Scroll Compressor: 11.50 EER / Non-Bleed TXV 13.11 $543.29 $36.41 $1037.31 1.909 $1968.37 $31.47 $3037.15 2616 $222 1.32 $5,503 $5,191 $4,724 1.01 1.15 1.47

10 9 + Increase Evaporator Face Area to 6.60 sq.ft. 13.97 $565.51 $22.22 $1077.44 I .1X)5 $1985.35 $31.47 $3094.26 2455 $208 1.75 $5,408 $5,115 $4,677 1 .33 1.52 1.95

11 10 + Increase Condenser Face Area to 18.03 sq.ft. 14.74 $586.24 $20.73 $1121.90 1.914 $2019.91 $31.47 $3173.28 2327 $197 2.33 $5,366 $5,089 $4,673 1.78 2.04 2.60

12 11 + Increase Evaporator Face Area to 7.50 sq.ft. 14.91 $594.35 $8.11 $1149.95 1.935 $2026.08 $31.47 $3207.50 2299 $195 2.61 $5,374 $5,100 $4,690 1.99 2.28 2.91

13 12+ Increase Condenser Face Area to 28.33 sq.ft. 15.35 $635.95 $41.60 $1242.55 1.954 $2095.19 $31.47 $3369.21 2234 $189 3.95 $5,475 $5,209 $4,810 3.01 3.44 4.40

14 13 + Evaporator ECM Fan Motor 15.91 $777.26 $141.31 $1499.69 1.929 $2095.19 $47.09 $3641.97 2155 $183 6.06 $5,673 $5,416 $5,032 4.62 5.29 6.75

15 14 + Electronic Expansion Valve 16.10 $853.43 $76.17 $1653.14 1.937 $2095.19 $56.07 $3804.40 2129 $180 7.31 $5,811 $5,557 $5,177 5.57 6.38 8.15

16 15 + CondenserECM Fan Motor 16.25 $919.98 $66.55 $1791.34 1.947 $2095.19 $63.68 $3950.21 2109 $179 8.41 $5,938 $5,687 $5,310 6.41 7.34 9.38

17 16 + Two-Speed Recip-Compressor System 17.66 $1,100.67 $180.69 $2130.34 1.935 $2095.19 $76.66 $4302.19 1942 $165 10.14 $6,132 $5,901 $5,554 7.73 8.85 11.30

18 16 + Variable-Speed Recip-Compressor System 18.03 $1,511.92 $591.94 $2888.51 1.910 $2095.19 $120.59 $5104.29 1902 $161 15.69 $6,897 $6,670 $6,331 11.96 13.69 17.49

19 16+Two-Speed Scroll-Compressor System 18.35 $1,411.92 $491.94 $2826.41 2.002 $2095.19 $116.22 $5037.82 1869 $158 14.91 $6,799 $6,576 $6,243 11.37 13.01 16.61

20 16 + Variable- Speed Scroll-Compressor System 20.55 $1,561.92 $641.94 $3177.53 2.034 $2095.19 $122.78 $5395.50 1668 $141 15.57 $6,968 $6,769 $6,471 11.87 13.59 17.35

Assumptions:

1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime = 15 years.

3 Baseline unit includes:

Evaporator: 4.13 sq.ft.,13 fins/inch, Wavy Fins, 3 tube rows, Groove Tubes

Condenser: 12.88 sq.ft., 20 fins/inch, Slit Fins,1 tube row, Smooth Tubes

Compressor: Reciprocating, 10.20 EER (nominal)

Evaporator Fan Motor: PSC, 58.5% efficient

Condenser Fan Motor: PSC, 55.0% efficient

Enhancement Devices: None

4 Non-Bleed Thermostatic Expansion Valve replaces the need for a Time Delay Relay

5 Maximum Sensible Heat Ratio = 76.5%

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

7 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

-

Life Cycle Costs and Payback Periods of3-ton, Single Package System Central Air Conditioner 

Incr. Installed Annual Annual Cumul. Lifecycle Costs 

SEER Manurr Manurr Retail Mark Installation Maintenance Consumer Elec. Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost Cost use cost Period (1992$) 

Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr (1992$) (years) 4% 6% 10% 

0 Baseline 9.70 $474.00 - $919.59 1.940 SI968.37 $46.69 $2934.65 3533 $299 NA $6,264 $5,843 $5,213 

1 o + Backward Inclined Indoor Blower 9.97 $474.04 $0.04 $920.39 1.942 $1968.37 $46.69 $2935.45 3440 $292 0.10 $6,177 $5,767 $5,153 

2 1 + Evaporator Slit Fins 10.09 $474.13 $0.09 $921.66 1.944 $1968.37 $46.69 $2936.72 3399 $288 0.18 $6,140 $5,734 $5,128 

3 2 + Reciprocating Compres..or: 10.91 EER 11.00 $481.51 $7.38 $932.92 1.937 $1968.37 $46.69 $2947.98 3118 $264 0.38 $5,887 $5,515 $4,958 

4 3 + More Efficient Condenser PSC Fan Motor (65.0%) 11.12 $486.46 $4.95 $942.05 1.937 $1968.37 $39.08 $2949.50 3083 $261 0.39 $5,~54 $5,487 $4,937 

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 11.38 $493.68 $7.22 $954.60 1.934 $1968.37 $31.47 -$2954.44 3013 $255 0.45 $5,793 $5,434 $4,897 

6 5 + Time Delay Relay 11.81 $500.18 $6.50 $965.69 1.931 $1968.37 $31.47 $2965.53 2902 $246 0.58 $5,701 $5,355 $4,837 

7 6 + Condenser Grooved Tubes 12.25 $506.13 $5.95 $975.95 1.928 $1968.37 $31.47 $2975.79 2800 $237 0.66 $5,615 $5,281 $4,781 

8 7 + Increase Evaporalor Fin Denslly 10 14 (pi 12.30 $S06.1l1l SO.75 S'J71l.4'J 1.'130 SI%8.37 $31.47 $2'J71l.33 271l!! $236 (l.II'1 S5,6(J6 $5,273 S4,776 

9 8 + Scroll Compressor: 11.50 EER / Non-Bleed TXV 13.11 $543.29 $36.41 $1037.31 1.909 $1968.37 $31.47 $3037.15 2616 S222 1.32 $5,503 $5,191 $4,724 

10 9 t Increa8c Evaporator Face Arca 106.60 sq.fl. 13.97 $565.51 $22.22 $1077.44 1.905 $1985.35 $31.47 $3094.26 2455 $208 1.75 $5,40B $5,115 $4,677 

11 10 + Increase Condenser Face Area to 18.03 sq.fL 14.74 $586.24 $20.73 $1121.90 1.914 $2019.91 $31.47 $3173.28 2327 $197 2.33 $5,366 $5,089 $4,673 

12 11 + Increase Evaporator Face Area to 7.50 sq.ft. 14.91 $594.35 $8.11 $1149.95 1.935 $2026.08 $31.47 $3207.50 2299 $195 2.61 $5,374 $5,100 $4,690 

13 12 + Increase Condenser Face Area 1028.33 sq.ft. 15.35 $635.95 $41.60 $1242.55 1.954 $2095.19 $31.47 $3369.21 2234 $189 3.95 $5,475 $5,209 S4,810 

14 13 + Evaporalor ECM Fan Molor 15.91 $777.26 $141.31 $1499.69 1.929 $2095.19 $47.09 $3641.97 2155 $183 6.06 $5,673 $5,416 $5,032 

15 14 + Electronic Expansion Valve 16.10 $853.43 $76.17 $1653.14 1.937 $2095.19 $56.07 $3804.40 2129 $180 7.31 $5,Bll $5,557 $5,177 

16 15 + CondenserECM Fan Motor 16.25 $919.98 $66.55 $1791.34 1.947 S2095.19 $63.68 $3950.21 2109 $179 8.41 $5,938 $5,687 $5,310 

17 16 + Two-Speed Recip-Compressor System 17.66 $1,100.67 $180.69 $2130.34 1.935 $2095.19 $76.66 $4302.19 1942 $165 10.14 $6,132 $5,901 $5,554 

18 16 + Variable-Speed Recip-Compressor System 18.03 SI,511.92 $591.94 $2888.51 1.910 $2095.19 $120.5'1 $5104.29 1902 $161 15.69 $6,897 $6,670 S6,331 

19 16 + Two-Speed Scroll-Compressor System 18.35 $1,411.92 $491.94 $2826.41 2.002 $2095.19 $116.22 $5037.82 1869 $158 14.91 $6,799 $6,576 $6,243 

20 16 + Variable-Speed Scroll-Compressor Syslem 20.55 $1,561.92 $641.94 $3177.53 2.034 $2095.19 $122.78 $5395.50 1668 $141 15.57 $6,968 $6,769 $6,471 

AssumpUons: 

1 Electricity cost '" 0.085 ${kWh (average cosl in 1999 obtained from an interpolalion of Ihe 1995 and 2000 prices of electricity forecast in DOE's Annual Energy OUIlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 ${kWh (1991$) or 0.085 after adjusling for inflalion from 1991 to 1992. The eleclricity price enduse factor for CAC is 1.0 (no adjustment). 

2 Lifetime = 15 years. 

3 Baseline unit includes: 

Evaporator: 4.13 sq.ft., 13 fins/inch, Wavy Fins, 3 tube rows, Groove Tubes 

Condenser: 12.88 sq.ft., 20 fins/inch, Slit Fins, 1 tube row, Smoolh Tubes 

Compressor: Reciprocating, 10.20 EER (nominal) 

Evaporator Fan Motor: PSC, 58.5% efficient 

Condenser Fan Motor: PSC, 55.0% efficient 

Enhancement Devices: None 

4 Non-Bleed Thermostatic Expansion Valve replaces the need for a Time Delay Relay 

5 Maximum Sensible Heat Ratio = 76.5% 

6 Evaporator ECM Fan Motor is modulaled. Cost of fan motor includes electronic modulating controls. 

7 Condenser ECM Fan Motor is run at a single speed. 

6/7/94 

Cumulative 

Cost of Conserved Energy 

(cenIll/kWh) 

4% 6% 10% 

NA NA NA 

0.08 0.09 0.11 

0.14 0.16 0.20 

0.29 0.33 0.42 

0.30 0.34 0.43 

0.34 0.39 O.SO 

0.44 O.SO 0.64 

O.SO 0.58 0.74 

0.53 O.W 0.77 

1.01 1.15 1.47 

1.33 1.52 1.9S 

1.78 2.04 2.60 

1.99 2.28 2.91 

3.01 3.44 4.40 

4.62 5.29 6.75 

5.57 6.38 8.15 

6.41 7.34 9.38 

7.73 8.85 11.30 

11.96 13.69 17.49 

11.37 13.01 16.61 

11.87 13.59 17.35 
6/7/94

Life Cycle Cost for 3-ton Single Package System

Central Air Conditioner

$7,000

20

$6,600

$5,400

$5,000 -1 i

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0

SEER

EE-RM-93-801 COMMENT 0DD

$7,000 

6/7/94 

Life Cycle Cost for 3·ton Single Package System 

Central Air Conditioner 

$6,600 I 0- 6% discount rate] 

18 

$6,200 ~ 

~ Q\ 

~ 

'-' 

t$ 0 

~ $5,800 1 

$5,400 

$5,000 

9.0 10.0 

3 

11.0 

6 

9 

12.0 13.0 14.0 15.0 

SEER 

14 

16.0 17.0 18.0 

20 

19.0 20.0 21.0 
6/7/94

Life Cycle Cost for 3-ton Single Package System

Central Air Conditioner

$7,000

$6,600

$6,200

$5,400

$5,000

$4,600

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0

SEER

18.0 19.0 20.0 21.0

EE-RM-93-801 COMMENT 0DD

~ 

~ 

$7,000 

$6,600 

$6,200 

Q\ 

C $5,800 

U 

~ 

$5,400 

$5,000 

$4,600 

9.0 10.0 11.0 

6/7/94 

Life Cycle Cost for 3-ton Single Package System 

Central Air Conditioner 

-0-- 4% discount rate 

- -6 - - 6% discount rate 

- - - -+- - - - 10% discount rate 

12.0 

--+- -- ' - -- +- - - --.. + 

13.0 14.0 15.0 

SEER 

16.0 17.0 18.0 

/ 

19.0 20.0 21.0 
6/7/94

Life Cycle Costs and Payback Periods of 5-ton, Single Package System Central Air Conditioner

Level Design Option

SEER Manufr

Cart

Incr.

Manufr

Cost

Retail

Cost

Mark

Up

Installed

Installation Maintenance Consumer

Cost Cost Cost

Annual

Elec.

Use

Annual

Energy

cost

Cumul.

Payback

Period

Lifecycle Costs

1992$

Cumulative

Coat of Conserved Energy

eettts/kWIt

Btuh/W ( 1992$) ( 1992$) 1992$ 1992$ (1992$) ( 1992$) kWh/ r ( 1992$) (years) 4% 6% 10% 4% 6% 10%

0 Baseline 9.71 $666.00 - $1471.81 2.210 $2221.22 $46.69 $3739.72 5962 $505 NA $9,358 $8,647 $7,583 NA NA NA

1 0 + Backward Inclined Indoor Blower 9.98 $666.02 $0.02 $1473.47 2.212 $2221.22 $46.69 $3741.38 5799 $492 0.12 $9,206 $8,515 $7,480 0.09 0.11 0.13

2 1 + Evaporator Slit Fins 10.07 $666.23 $0.21 $1475.48 2.215 $2221.22 $46.69 $3743.39 5748 $487 0.20 $9,161 $8,476 $7,449 0.15 0.18 0.23

3 2 + Scroll Compressor. 11.30 EER 11.52 $690.87 $24.64 $1522.32 2.203 $2221.22 $46.69 $3790.23 5022 $426 (1.63 $8,523 $7,924 $7,028 0.48 0.55 0.71

4 3 + Time Delay Relay 11.97 $697.37 $6.50 $1535.87 2.202 $2221.22 $46.69 $3803.78 4834 $410 0.67 $81359 $7,783 $6,920 0.51 0.58 0.75

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 12.27 $707.14 $9.77 $1555.43 2.200 $2221.22 $39.08 ,$3815.73 4714 $400 0.72 $8,259 $7,697 $6,855 0.55 0.63 0.80

6 5 + Non-Bleed Thermostatic Expansion Valve 12.58 $714.72 $7.58 $1570.96 2.198 $2221.22 $39.08 $3831.26 4599 $390 0.79 $8,166 $7,618 $6,797 0.60 0.69 0.88

7 6 + More Efficient Condenser PSC Fan Motor (65.0%) 12.70 $721.02 $6.30 $1584.15 2.197 $2221.22 $31.47 $3836.84 4557 $386 0.82 $8,131 $7,588 $6,775 0.62 0.71 0.91

8 7 + Increase Evaporator Fin Density to 14 fpi 12.74 $722.48 $1.46 $1588.45 2.199 $2221.22 $31.47 $3841.14 4542 $385 0.84 $8,121 $7,580 $6,769 0.64 0.74 0.94

9 8 + Increase Evaporator Face Area to 7.50 sq.ft. 13.13 $739.70 $17.22 $1629.40 2.2(13 $2231.51 $31.47 $3892.38 4408 $374 1.16 $8,046 $7,521 $6,734 0.88 1.01 1.29

10 9 + Condenser Grooved Tubes 13.28 $756.52 $16.82 $1671.13 2.209 $2231.51 $31.47 $3934.11 4356 $369 1.43 $8,040 $7,520 $6,743 1.09 1.25 1.59

11 10 + Increase Condenser Face Area to 27.60 sq.ft. 13.53 $788.74 $32.22 $1750.91 2.220 $2262.38 $31.47 $4044.76 4277 $362 2.14 '$8,075 $7,565 $6,802 1.63 1.86 2.38

12 11 + Increase Condenser Face Area to 36.50 sq.ft. 13.79 $850.40 $61.66 $1905.40 2.241 $2322.10 $31.47 $4258.97 4195 $356 3.47 $8,212 $7,712 $6,964 2.64 3.03 3.86

13 12 + Evaporator ECM Fan Motor 14.40 $1,030.66 $180.26 $2282.39 2.214 $2322.10 $47.09 $4651.58 4019 $341 5.54 $8,439 $7,960 $7,243 4.22 4.83 6.17

14 13 + Electronic Expansion Valve 14.59 $1,106.83 $76.17 $2469.83 2.231 $2322.10 $56.07 $4848.00 3966 $336 6.55 $8,585 $8,113 $7,405 4.99 5.72 7.30

15 14 + Condenser ECM Fan Motor 14.66 $1,179.53 $72.70 $2651.14 2.248 $2322.10 $63.68 $5036.92 3947 $335 7.60 $8,756 $8,286 $7,581 5.79 6.63 8.46

16 15 + Two-Speed Recip-Compressor System 16.27 $1,368.28 $188.75 $3080.97 2.252 $2322.10 $80.54 $5483.61 3557 $302 8.56 $8,836 $8,412 $7,777 6.52 7.47 9.54

17 15 + Variable-Speed Recip-Compressor System 17.14 $1,779.53 $600.00 $4003.54 2.250 $2322.10 $132.24 $6457.88 3376 $286 12.40 $9,639 $9,237 $8,634 9.45 10.82 13.82

18 15 + Two-Speed Scroll-Compressor System 16.52 $1,679.53 $500.00 $3984.18 2.372 $2322.10 $127.87 $6434.15 3504 $297 12.93 $9,736 $9,318 $8,693 9.86 11.29 14.41

19 15 + Variable-Speed Scroll-Compressor System 19.04 $1,829.53 $650.00 $4448.17 2.431 $2322.10 $134.43 $6904.70 3039 $258 12.78 $9,769 $9,406 $8,864 9.74 11.15 14.24

Assumptions:

I Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991 $) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime = 15 years.

3 Baseline unit includes:

Evaporator: 6.00 sq.ft., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes

Condenser: 23.00 sq.ft., 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes

Compressor. Reciprocating, 10.49 EER (nominal); Accumulator

Evaporator Fan Motor: PSC, 58.5% efficient

Condenser Fan Motor: PSC, 55.0% efficient

Enhancement Devices: None

4 Non-Bleed Thermostatic Expansion Valve replaces the need for a Time Delay Relay.

5 Maximum Sensible Heat Ratio = 76.5%

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

7 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of S·ton, Single Package System Central Air Conditioner 

Incr. Installed Annual Annual Cumul. Lifecycle Costs 

SEER Mpnuf'r Manuf'r Retpil Mark Installation Maintenance Consumer Elec. Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost Cost usc cost Period (1992$) 

BtuhIW (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr (1992$) (years) 4% 6% 10% 

0 Baseline 9.71 $666.00 - $1471.81 2.210 $2221.22 $46.69 $3739.72 5962 $505 NA $9,358 $8,647 $7,583 

1 o + Backward Inclined Indoor Blower 9.98 $666.02 $0.02 $1473.47 2.212 $2221.22 $46.69 $3741.38 5799 $492 0.12 $9,206 $8,515 $7,480 

2 1 + Evaporator Slit Fins 10.07 $666.23 $0.21 $1475.48 2.215 $2221.22 $46.69 $3743.39 5748 $487 0.20 $9,161 $8,476 $7,449 

3 2 + Scroll Compressor: 11.30 EER 11.52 $690.87 $24.64 S1522.32 2.203 $2221.22 $46.69 $3790.23 5022 $426 0.63 $8,523 $7,924 $7,028 

4 3 + Time Delay Relay 11.97 $697.37 $6.50 S1535.87 2.202 $2221.22 $46.69 $3803.78 4834 $410 0.67 $8,359 $7,783 $6,920 

5 4 + More Efficient Evaporator PSC Fan Motor (68.5%) 12.27 $707.14 $9.77 $1555.43 2.200 $2221.22 $39.08 -$3815.73 4714 $400 0.72 $8,259 $7,697 $6,855 

6 5 + Non-Bleed Thennostatic Expansion Valve 12.58 $714.72 $7.58 $1570.96 2.198 $2221.22 $39.08 $3831.26 4599 $390 0.79 $8,166 $7,618 $6,797 

7 6 + More Efficient Condenser PSC Fan Motor (65.0%) 12.70 $721.02 $6.30 $1584.15 2.197 $2221.22 $31.47 S3836.84 4557 $386 0.82 S8,131 $7,588 $6,n5 

8 7 + Increase Evaporator Fin Density to 14 fpi 12.74 $722.48 $1.46 $1588.45 2.199 $2221.22 $31.47 $3841.14 4542 $385 0.84 $8,121 $7,580 $6,769 

9 8 + Increase Evaporator Face Area to 7.50 sq.ft. 13.13 $739.70 $17.22 $1629.40 2.203 $2231.51 $31.47 $3892.38 4408 $374 1.16 $8,()46 $7,521 $6,734 

10 9 + Condenser Grooved Tubes 13.28 $756.52 $16.82 $1671.13 2.209 $2231.51 $31.47 $3934.11 4356 $369 1.43 $8,040 $7,520 $6,743 

11 10 + Increase Condenser Face Area to 27.60 sq-ft. 13.53 $788.74 $32.22 $1750.91 2.220 $2262.38 $31.47 $4044.76 4277 $362 2.14 $8,075 $7,565 $6,802 

12 11 + Increase Condenser Face Area to 36.50 sq.ft. 13.79 $850.40 $61.66 $1905.40 2.241 $2322.10 $31.47 $4258.97 4195 $356 3.47 $8,212 $7,712 $6,964 

13 12 + Evaporator ECM Fan Motor 14.40 $1,030.66 $180.26 $2282.39 2.214 $2322.10 $47.09 $4651.58 4019 $341 5.54 $8,439 $7,960 $7,243 

14 13 + Electronic Expansion Valve 14.59 $1,106.83 $76.17 $2469.83 2.231 $2322.10 $56.07 $4848.00 3966 $336 6.55 $8,585 $8,113 $7,405 

15 14 + Condenser ECM Fan Motor 14.66 $1,17953 $72.70 $2651.14 2.248 $2322.10 $63.68 $5036.92 3947 $335 7.60 $8,756 . $8,286 $7,581 

16 15 + Two-Speed Recip-Compressor System 16.27 $1,368.28 $188.75 $3080.97 2.252 $2322.10 $80.54 $5483.61 3557 $302 8.56 $8,836 $8,412 $7,7n 

17 IS + Variable-Speed Recip-Compressor System 17.14 $1,77953 $600.00 $4003.54 2.250 $2322.10 $132.24 $6457.88 3376 $286 12.40 $9,639 $9,237 $8,634 

18 IS + Two-Speed Scron-Compressor System 16.52 $1,67953 $500.00 $3984.18 2.372 $2322.10 $127.87 $6434.15 3504 $297 12.93 $9,736 $9,318 $8,693 

19 15 + Variable-Speed Scroll-Compressor System 19.04 $1,829.53 $650.00 $4448.17 2.431 $2322.10 $134.43 $6904.70 3039 $258 12.78 $9,769 $9,406 $8,864 

Assumptions: 

1 Electricity cost = 0.085 $lkWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 SlkWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment). 

2 Lifetime = 15 years. 

3 Baseline unit includes: 

Evaporator: 6.00 sq.ft., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes 

Condenser: 23.00 sq.ft, 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes 

Compressor: Reciprocating, 10.49 EER (nominal); Accumulator 

Evaporator Fan Motor: PSC, 58.5% efficient 

Condenser Fan Motor: PSC, 55.0% efficient 

Enhancement Devices: None 

4 Non-Bleed Tbennostatic Expansion Valve replaces the need for a Time Delay Relay. 

5 Maximum Sensible Heat Ratio = 76.5% 

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

7 Condenser ECM Fan Motor is run at a single speed. 

6/7/94 

Cumulative 

COIlt of Conserved Enerll>' 

(cent!l/kWh) 

4% 6% 10% 

NA NA NA 

0.09 0.11 0.13 

0.15 0.18 0.23 

0.48 0.55 0.71 

0.51 0.58 0.75 

0.55 0.63 0.80 

0.60 0.69 0.88 

0.62 0.71 0.91 

0.64 0.74 0.94 

0.88 1.01 1.29 

1.09 1.25 1.59 

1.63 1.86 2.38 

2.64 3.03 3.86 

4.22 4.83 6.17 

4.99 5.72 7.30 

5.79 6.63 8.46 

6.52 7.47 9.54 

9.45 10.82 13.82 

9.86 11.29 14.41 

9.74 11.15 14.24 
6/7/94

Life Cycle Cost for 5-ton Single Package System

Central Air Conditioner

$9,400 -r

17

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EE-RM-93-801 COMMENT 0DD

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6/7/94 

Life Cycle Cost for 5-ton Single Package System 

Central Air Conditioner 

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6/7/94

Life Cycle Cost for 5-ton Single Package System

Central Air Conditioner

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EE-RM-93-801 COMMENT 0DD

$9,800 

$9,400 

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6/7/94 

Life Cycle Cost for 5-ton Single Package System 

Central Air Conditioner 

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Life Cycle Costs and Payback Periods of 3-ton, Single Package System Central Heat Pump

6/7/94

Incr. Installed Annual Elec Use Annual Cumel. Lifecycle Costs Cumulative

SEER HSPF Manufr Manufr Retail Mark Installation Maintenance consumer Cooling Heating Energy Payback Cost of Conserved Energy

Level Design Option Cost Cost Cost Up Cost Cost cost cost Period (1992$) (cents/kWh)

Btuh/W Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr kWh/yr (1992$) (years) 4% 6% 10% 4% 6% 10%

0 Baseline 9.70 6.69 $677.00 - $1412.49 2.086 $1202.35 $46.69 $2661.53 3764 8,379 $1,029 NA $14,105 $12,658 $10,490 NA NA NA

1 0 + Backward Inclined Indoor Blower 9.99 6.79 $677.00 $0.00 $1414.03 2.089 $1202.35 $46.69 $2663.07 3654 8,254 $1,009 0.08 $13,885 $12,466 $10,340 0.13 0.14 0.18

2 1 + Indoor Coil Slit Fins 10.12 6.90 $677.03 $0.03 $1415.61 2.091 $1202.35 $46.69 $2664.65 3608 8,128 $995 0.09 $13,724 $12,326 $10,231 0.18 0.21 0.26

3 2 + Increase Indoor Coil Fin Density to 14 fpi 10.16 6.92 $677.69 $0.66 $1418.29 2.093 $1202.35 $46.69 $2667.33 3594 8,096 $991 0.15 $13,684 $12,290 $10,204 0.31 0.35 0.45

4 3 + More Efficient Indoor PSC Fan Motor (68.5%) 10.40 7.01 $684.89 $7.20 $1432.30 2.091 $1202.35 $39.08 $2673.73 3512 7,995 $975 0.23 $13,517 $12,146 $10,092 0.43 0.50 0.64

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 10.51 7.10 $691.19 $6.30 $1444.75 2.090 $1202.35 $31.47 $2678.57 3476 7,890 $963 0.26 $13,390 $12,035 $10,006 0.53 0.61 0.78

6 5 + Time Delay Relay 10.84 7.25 $697.69 $6.50 $1457.54 2.089 $1202.35 $31.47 $2691.36 3369 7,734 $941 0.34 $13,155 $11,831 $9,849 0.68 0.78 0.99

7 6+ Reciprocating Compressor: 11.26 EER 11.34 7.46 $708.68 $10.99 $1478.12 2.086 $1202.35 $31.47 $2711.94 3221 7,516 $910 0.42 $12,831 $11,551 $9,634 0.84 0.96 1.22

8 7 + Increase Indoor Coil Face Area to 4.97 sq.ft. 12.04 7.73 $722.05 $13.37 $1515.75 2.099 $1212.09 $31.47 $2759.31 3032 7,250 $872 0.62 $1,,2,449 $11,224 $9,388 1.20 1.38 1.76

9 8+ Demand Defrost 12.04 7.96 $733.55 $11.50 $1551.56 2.115 $1212.09 $31.47 $279112 3032 7,039 $854 0.76 $12,286 $11,086 $9,288 1.64 1.88 2.40

10 9 + Outdoor Coil Grooved Tubes 12.34 8.00 $740.52 $6.97 $1579.52 2,133 $1212.09 $31.47 $2823.08 2958 7,009 $845 0.88 $12,216 $11,028 $9,249 1.80 2.06 2.64

11 10 + Increase Indoor Coil Face Area to 6.39 sq.ft. 12.73 8.15 $755.60 $15.08 $1636.12 2.165 $1221.83 $31.47 $2889.42 2868 6,877 $826 1.12 $12,073 $10,912 $9,172 2.29 2.62 3.34

12 11+Scroll Compressor: 11.50 EER 13.29 8.25 $774.58 $18.98 $1701.07 2.196 $1221.83 $31.47 $2954.37 2748 6,791 $808 1.33 $11,943 $10,807 $9,104 2.59 2.97 3.79

13 12 + Non-Bleed Thermostatic Expansion Valves 13.62 8.47 $787.03 $12.45 $1754.71 2.230 $1221.83 $31.47 $3008.01 2681 6,616 $788 1.44 $11,769 $10,661 $9,002 2.88 3.29 4.20

14 13 + Increase Outdoor Coil Face Area to 21.00 sq.ft. 14.34 8.80 $811.89 $24.86 $1846.26 2.274 $1262.09 $31.47 $3139.82 2547 6,372 $756 1.75 $11,545 $10,482 $8,890 3.53 4.05 5.17

15 14 + Increase Indoor Coil Face Area to 7.50 sq.ft. 14.55 8.86 $822.19 $10.30 $1924.34 2.341 $1269.70 $31.47 $3225.51 2509 6,325 $749 2.01 $11,551 $10,498 $8,921 4.04 4.63 5.91

16 15 + Increase Indoor Coil Tube Density to 4 rows 14.66 8.93 $844.58 $22.39 $2046.12 2.423 $1269.70 $31.47 $3347.29 2490 6,276 $743 2.40 $11,609 $10,564 $8,999 4.84 5.54 7.08

17 16 + Increase Outdoor Coil Face Area to 30.00 sq.ft. 15.02 9.04 $890.19 $45.61 $2240.59 2.517 $1330.09 $31.47 $3602.15 2432 6,200 $732 3.16 $11,736 $10,708 $9,167 6.35 7.27 9.28

18 17 + Outdoor ECM Fan Motor 15.12 9.17 $962.89 $72.70 $2485.30 2.581 $1330.09 $39.08 $3854.47 2415 6,115 $723 3.90 $11,893 $10,876 $9,354 7.95 9.11 11.63

19 18 + Electronic Expansion Valve 15.31 9.22 $1,011.23 $48.34 $2689.86 2.660 $1330.09 $48.06 $4068.01 2385 6,083 $718 4.51 $12,047 $11,038 $9,527 9.17 10.50 13.40

20 19 + Indoor ECM Fan Motor 15.87 9.28 $1,152.53 $141.30 $3057.75 2.653 $1330.09 $63.68 $4451.52 2300 6,042 $707 5.56 $12,313 $11,319 $9,830 11.00 12.59 16.08

21 20+Two-Speed Recip-Compressor System 17.37 9.32 $1,332.79 $180.26 $3550.21 2.664 $1330.09 $77.62 $4957.92 2102 6,012 $688 6.73 $12,605 $11,638 $10,189 12.43 14.23 18.17

22 20 + Variable-Speed Recip-Compressor System 17.70 9.72 $1,744.04 $591.51 $4578.80 2.625 $1330.09 $123.47 $6032.36 2063 5,770 $664 9.23 $13,414 $12,481 $11,082 17.82 20.40 26.05

23 20+Two-Speed Scroll-Compressor System 17.93 9.89 $1,644.04 $491.51 $4704.37 2.861 $1330.09 $119.10 $6153.56 2037 5,666 $653 9.28 $13,412 $12,494 $11,119 18.18 20.82 26.58

24 120 + Variable-edScroll-Com Scroll-Compr 20.21 10.69 $1,794.04 $641.51 $5306.91 2.958 $1330.09 $125.66 $6762.66 1806 5,243 $597 9.50 $13,406 $12,566 $11,307 18.84 21.57 27.54

Assumptions:

t Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime = 15 years.

3 Baseline unit includes:

Indoor Coil: 3.55 sq.ft., 13 fins/inch, Wavy Fins, 3 tube rows, Groove Tubes

Outdoor Coil: 15.00 sq.ft., 20 fins/inch, Slit Fins, I tube row, Smooth Tubes

Compressor: Reciprocating, 10.80 EER (nominal); Accumulator

Indoor Fan Motor: PSC, 58.5% efficient

Outdoor Fan Motor: PSC, 55.0% efficient

Enhancement Devices: None

4 All Two-Speed and Variable-Speed Compressor Systems include an Accumulator.

5 Maximum Sensible Heat Ratio = 76.5%

6 Non-Bleed Thermostatic Expansion Valves replace the need for a Time Delay Relay and an Accumulator.

7 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

8 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of 3-ton, Single Package System Central Heat Pump 

Incr. Installed Annual Elec Use Annual Cumu!. 

SEER HSPF Manufr Manufr Retail Mark Installation Maintenance consumer Cooling Heating Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost cost cost Period 

BtuhIW BtuhlW (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWhlyr kWh/yr (1992$) (years) 

0 Baseline 9.70 6.69 $677.00 - $1412.49 2.086 $1202.35 $46.69 $2661.53 3764 8,379 $1,029 NA 

1 0+ Backward Inclined Indoor Blower 9.99 6.79 $677.00 $0.00 $1414.03 2.089 $1202.35 $46.69 $2663.07 3654 8,254 $1,009 0.08 

2 I + Indoor Coil Slit Fins 10.12 6.90 $677.03 $0.03 $1415.61 2.091 $1202.35 $46.69 $2664.65 3608 8,128 $995 0.09 

3 2 + Increase Indoor Coil Fin Density to 14 fpi 10.16 6.92 $677.69 $0.66 $1418.29 2.093 $1202.35 $46.69 $2667.33 3594 8,096 $991 0.15 

4 3 + More Efficient IndoorPSC Fan Motor (68.5%) 10.40 7.01 $684.89 $7.20 $1432.30 2.091 $1202.35 $39.08 $2673.73 3512 7,995 $975 0.23 

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 10.51 7.10 $691.19 $6.30 $1444.75 2.090 $1202.35 $31.47 $2678.57 3476 7,890 $963 0.26 

6 5 + Time Delay Relay 10.84 7.25 $697.69 $6.50 $1457.54 2.089 $1202.35 $31.47 $2691.36 3369 7,734 $941 0.34 

7 6 + Reciprocating Compressor: 11.26 EER 11.34 7.46 $708.68 $10.99 $1478.12 2.086 $1202.35 $31.47 $2711.94 3221 7,516 $910 0.42 

8 7 + Increase Indoor Coil Face Area to 4.97 sq.ft. 12.04 7.73 $722.05 $13.37 $1515.75 2.099 $1212.09 $31.47 $2759.31 3032 7,250 $872 0.62 

9 8 + Demand Defrost 12.04 7.96 $733.55 $11.50 $1551.56 2.115 $1212.09 $31.47 $2795.12 3032 7,039 $854 0.76 

10 9 + Outdoor Coil Grooved Tubes 12.34 8.00 $740.52 $6.97 $1579.52 2.133 $1212.09 $31.47 $2823.08 2958 7,009 $845 0.88 

11 10 + Increase Indoor Coil Face Area to 6.39 sq.ft. 12.73 8.15 $755.60 $15.08 $1636.12 2.165 $1221.83 $31.47 $2889.42 2868 6,877 $826 1.12 

12 11 + Scroll Compressor: 11.50 EER 13.29 8.25 $774.58 $18.98 $1701.07 2.196 $1221.83 $31.47 $2954.37 2748 6,791 $808 1.33 

13 12 + Non-Bleed Thermostatic Expansion Valves 13.62 8.47 $787.03 $12.45 $1754.71 2.230 $1221.83 $31.47 $3008.01 2681 6,616 $788 1.44 

14 13 + Increase Outdoor Coil Face Area to 21.00 sq.ft. 14.34 8.80 $811.89 $24.86 $1846.26 2.274 $1262.09 $31.47 $3139.82 2547 6,372 $756 1.75 

15 14 + Increase Indoor Coil Face Area to 7.50 sq.ft. 14.55 8.86 $822.19 $10.30 $1924.34 2.341 $1269.70 $31.47 $3225.51 2509 6,325 $749 2.01 

16 15 + Increase Indoor Coil Tube Density to 4 rows 14.66 8.93 $844.58 $22.39 $2046.12 2.423 $1269.70 $31.47 $3347.29 2490 6,276 $743 2.40 

17 16 + Increase Outdoor Coil Face Area to 30.00 sq.ft. 15.02 9.04 $890.19 $45.61 $2240.59 2.517 $1330.09 $31.47 $3602.15 2432 6,200 $732 3.16 

18 17 + Outdoor ECM Fan Motor 15.12 9.17 $962.89 $72.70 $2485.30 2.581 $1330.09 $39.08 $3854.47 2415 6,115 $723 3.90 

19 18 + Electronic Expansion Valve 15.31 9.22 $1,011.23 $48.34 $2689.86 2.660 $1330.09 $48.06 $4068.01 2385 6,083 $718 4.51 

20 19 + Indoor ECM Fan Motor 15.87 9.28 $1,152.53 $141.30 $3057.75 2.653 $1330.09 $63.68 $44S1.52 2300 6,042 $707 5.56 

21 20 + Two-Speed Recip-Compressor System 17.37 9.32 $1,332.79 $180.26 $3550.21 2.664 $1330.09 $77.62 $4957.92 2102 6,012 $688 6.73 

22 20 + Variable-Speed Recip-Compressor System 17.70 9.72 $1,744.04 $591.51 $4578.80 2.625 $1330.09 $123.47 $6032.36 2063 S,770 $664 9.23 

23 20 + Two-Speed Scroll-Compressor System 17.93 9.89 $1,644.04 $491.51 $4704.37 2.861 $1330.09 $119.10 $6153.56 2037 5,666 $653 9.28 

24 20 + Variable-Speed Scroll-Compressor System 20.21 10.69 $1.794.04 $641.51 $5306.91 2.958 $1330.09 $125.66 $6762.66 1806 5.243 $597 9.50 

Assumptions: 

Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment). 

2 Lifetime = IS years. 

3 Baseline unit includes: 

Indoor Coil: 3.55 sq.ft., 13 fins/inch, Wavy Fins, 3 tube rows, Groove Tubes 

Outdoor Coil: 15.00 sq.ft., 20 fins/inch, Slit Fins, I tube row, Smooth Tubes 

Compressor: Reciprocating, 10.80 EER (nominal); Accumulator 

Indoor Fan Motor: PSC, 58.5% efficient 

Outdoor Fan Motor: PSC, 5S.0% efficient 

Enhancement Devices: None 

4 All Two-Speed and Variable-Speed Compressor Systems include an Accumulator. 

Maximum Sensible Heat Ratio = 76.5% 

6 Non-Bleed Thermostatic Expansion Valves replace the need for a Time Delay Relay and an Accumulator. 

Evaporator ECM Fan Motor is modulated. Cost of ran motor includes electronic modulating controls. 

Condenser ECM Fan Motor is run at a single speed. 

6/7/94 

Lifecycle Costs Cumulative 

Cost of Conserved Energy 

(1992$) (centslkWh) 

4% 6% 10% 4% 6% 10% 

$14,105 $12,658 $10,490 NA NA NA 

$13,885 $12,466 $10,340 0.13 0.14 0.18 

$13,724 $12,326 $10,231 0.18 0.21 0.26 

$13,684 $12,290 $10,204 0.31 0.35 0.45 

$13,517 $12,146 $10,092 0.43 0.50 0.64 

$13,390 $12,035 $10,006 0.53 0.61 0.78 

$13,155 $11,831 $9,849 0.68 0.78 0.99 

$12,831 $11,551 $9,634 0.84 0.96 1.22 

$J,2,449 $11,224 $9,388 1.20 1.38 1.76 

$12,286 $11,086 $9,288 1.64 1.88 2.40 

$12,216 $11,028 $9,249 1.80 2.06 2.64 

$12,073 $10,912 $9,172 2.29 2.62 3.34 

$11,943 $10,807 $9,104 2.59 2.97 3.79 

$11.769 $10,661 $9,002 2.88 3.29 4.20 

$11,545 $10,482 $8,890 3.53 4.05 5.17 

$11,551 $10,498 $8,921 4.04 4.63 5.91 

$11,609 $10,564 $8,999 4.84 5.54 7.08 

$11,736 $10,708 $9,167 6.35 7.27 9.28 

$11,893 $10,876 $9,354 7.95 9.11 11.63 

$12,047 $11,038 $9,S27 9.17 10.S0 13.40 

S12,313 $11,319 $9,830 11.00 12.S9 16.08 

$12,605 $11,638 $10,189 12.43 14.23 18.17 

$13,414 $12,481 $11,082 17.82 20.40 26.0S 

$13,412 $12,494 $11,119 18.18 20.82 26.58 

$13,406 $12,566 $11,307 18.84 21.S7 27.S4 
6/7/94

Life Cycle Cost for 3-ton Single Package System

Central Heat Pump

$12,700

$12,300

$11,900

Q1

$11,500

$11,100

$10,700

$10,300 1 I '

.q 6% discount rate

14

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9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0

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EE-RM-93-801 COMMENT 0DD

$12,700 

o 

$12,300 

6/7/94 

Life Cycle Cost for 3-ton Single Package System 

Central Heat Pump 

l-o-~ 60/0 discount rate 

24 
6/7/94

Life Cycle Cost for 3-ton Single Package System

Central Heat Pump

$14,500

$14,000

$13,500

$13,000

$12,500

$10,500

$10,000

$9,500

$9,000

$8,500

A

0

10% discount rate

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0

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4% discount rate

- - - - 6% discount rate

18.0 19.0 20.0 21.0

EE-RM-93-801 COMMENT 0DD

$14,500 

$14,000 

$13,500 

$13,000 

$12,500 

ih $12,000 

N 

~ 

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u 

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~ $11,000 

$10,500 

$10,000 

$9,500 

$9,000 

$8,500 

9.0 10.0 11.0 

6/7/94 

Life Cycle Cost for 3-ton Single Package System 

Central Heat Pump 

12.0 13.0 

--0- 4% discount rate 

- - -6 - - 6% discount rate 

- - - - +- - - - 10% discount rate 

14.0 15.0 

SEER 

16.0 17.0 18.0 

( 

19.0 20.0 21.0 
Life Cycle Costs and Payback Periods of 5-ton, Single Package System Central Heat Pump

6/7/94

Incr. Installed Annual Elec Use Annual Cumul. Lifecycle Costs Cumulative

SEER HSPF Manufr Manufr Retail Mark Installation Maintenance Consumer Cooling Heating Energy Payback Cost of Conserved Energy

Level Design Option Cost Cost Cost Up Cost Cost Cost cost Period (1992$) (cents/kWh)

Btuh/W Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/ r kWh/yr (1992$) (years) 4% 6% 10% 4% 6% 10%

0 Baseline 9.70 6.88 $934.00 - $2156.86 2.309 $1342.86 $46.69 $3546.41 5977 13,966 $1,690 NA $22,341 $19,964 $16,404 NA NA NA

1 0 + Backward Inclined Indoor Blower 9.99 7.00 $934.03 $0.03 $2158.62 2.311 $1342.86 $46.69 $3548.17 5803 13,732 $1,656 0.05 $21,958 $19,630 $16,143 0.09 0.10 0.13

2 1 + Indoor Coil Slit Fins 10.07 7.06 $934.25 $0.22 $2160.74 2.313 $1342.86 $46.69 $3550.29 5757 13,611 $1,642 0.08 $21,802 $19,494 $16,037 0.16 0.18 0.23

3 2 + Time Delay Relay 10.36 7.19 $940.75 $6.50 $2174.90 2.312 $1342.86 $46.69 $3564.45 5597 13,374 $1,608 0.22 $21,442 $19,181 $15,795 0.43 0.49 0.62

4 3+Scroll Compressor: 11.30 EER 11.93 7.57 $965.13 $24.38 $2223.35 2.304 $1342.86 $46.69 $3612.90 4861 12,693 $1,488 0.33 $20,156 $18,064 $14,930 0.54 0.61 0.78

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 12.05 7.66 $971.43 $6.30 $2237.13 2.303 $1342.86 $39.08 $3619.07 4811 12,545 $1,471 0.33 $19,975 $17,907 $14,808 0.56 0.64 0.82

6 5 + Increase Indoor Coil Fin Density to 14 fpi 12.09 7.70 $973.16 $1.73 $2242.14 2.304 $1342.86 $39.08 $3624.08 4797 12,484 $1,465 0.34 $19,909 $17,850 $14,765 0.59 0.68 0.87

7 6 + More Efficient Indoor PSC Fan Motor (68.5%) 12.43 7.81 $982.92 $9.76 $2262.56 2.302 $1342.86 $31.47 $3636.89 4665 12,308 $1,439 0.36 $19,632 $17,609 $14,579 0.62 0.71 0.91

8 7 + Demand Defrost 12.43 8.04 $994.42 $11.50 $2286.31 2.299 $1342.86 $31.47 $3660.64 4665 11,950 $1,408 0.40 $19,318 $17,338 $14,372 0.78 0.90 1.14

9 8 + Non-Bleed Thermostatic Expansion Valves 12.74 8.28 $1,016.08 $21.66 $2329.54 2.293 $1342.86 $31.47 $3703.87 4551 11,608 $1,370 0.49 $18,932 $17,006 $14,121 0.99 1.14 1.45

10 9 + Increase Indoor Coil Face Area to 7.50 sq.ft. 13.10 8.37 $1,033.92 $17.84 $2389.31 2.311 $1353.15 $31.47 $3773.93 4424 11,475 $1,348 0.66 $18,757 $16,862 $14,024 1.32 1.51 1.93

11 10 + Outdoor Coil Grooved Tubes 13.30 8.40 $1,048.28 $14.36 $2443.98 2.331 $1353.15 $31.47 $3828.60 4360 11,438 $1,339 0.80 $18,717 $16,834 $14,014 1.57 1.80 2.29

12 11 + Increase Outdoor Coil Face Area to 27.30 sq.ft 13.74 8.63 $1,106.40 $58.12 $2612.83 2.362 $1405.49 $31.47 $4049.79 4220 11,135 $1,301 1.29 $18,519 $16,689 $13,948 2.58 2.95 3.77

13 12+ Electronic Expansion Valve 13.93 8.68 $1,154.74 $48.34 $2768.70 2.398 $1405.49 $40.45 $4214.64 4161 11,072 $1,291 1.67 $18,570 $16,755 $14,035 3.31 3.79 4.84

14 13 + Outdoor ECM Fan Motor 14.02 8.79 $1,227.44 $72.70 $2971.53 2.421 $1405.49 $48.06 $4425.08 4137 10,936 $1,278 2.13 $18,629 $16,833 $14,142 4.29 4.92 6.28

15 14 + Increase Outdoor Coil Face Area to 36.50 sq.ft 14.20 8.86 $1,295.30 $67.86 $3200.41 2.471 $1467.22 $48.06 $4715.69 4084 10,844 $1,265 2.75 $18,784 $17,005 $14,340 5.55 6.36 8.12

16 15 + Indoor ECM Fan Motor 14.89 8.95 $1,475.55 $180.25 $3650.92 2.474 $1467.22 $63.68 $5181.82 3893 10,733 $1,240 3.63 $18,965 $17,222 $14,611 7.06 8.08 10.32

17 16 + Two-Speed Recip-Compressor System 16.48 8.96 $1,664.30 $188.75 $4227.83 2.540 $1467.22 $80.83 $5775.88 3519 10,722 $1,207 4.61 $19,197 $17,499 $14,957 8.16 9.34 11.92

18 16 + Variable-Speed Recip-Compressor System 16.65 9.49 $2,075.55 $600.00 $5477.98 2.639 $1467.22 $133.11 $7078.31 3481 10,127 $1,153 6.58 $19,902 $18,281 $15,851 12.73 14.57 18.60

19 16 + Two-Speed Scroll-Compressor System 16.78 9.73 $1,975.55 $500.00 $5705.34 2.888 $1467.22 $128.74 $7301.30 3454 9,875 $1,130 6.70 $19,863 $18,274 $15,895 13.39 15.33 19.57

20 16 + Variable-Speed Scroll-Comp ressor Sstem 18.59 10.01 $2,125.55 $650.00 $6495.56 3.056 $1467.22 $135.29 $8098.07 3118 9,603 $1,078 7.44 $20,086 $18,570 $16,299 14.32 16.39 20.93

Assumptions:

1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime = 15 years.

3 Baseline unit includes:

Indoor Coil: 6.00 sq.ft., 13 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes

Outdoor Coil: 19.5 sq.ft., 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes

Compressor: Reciprocating, 10.49 EER (nominal); Accumulator

Indoor Fan Motor: PSC, 58.5% efficient

t)uidim Fan Motor: I'SC, 55.0% efficient

I:shancemcnt Devices: None.

4 Maximum Sensible Heat Ratio = 76.5%

5 Non-Bleed Thermostatic Expansion Valves replace the need for a Time Delay Relay; Accumulator still required due to excess refrigerant.

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls.

7 Condenser ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0DD

Life Cycle Costs and Payback Periods of 5·ton, Single Package System Central Heat Pump 

Incr. Installed Annual Elec Use Annual Cumu!. 

SEER HSPF Manufr Manufr Retail Mark Installation Maintenance Consumer Cooling Heating Energy Payback 

Level Design Option Cost Cost Cost Up Cost Cost Cost cost Period 

BtuhIW BlUhlW (1992$) (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr kWhlyr (1992$) (years) 

0 Baseline 9.70 6.88 $934.00 $2156.86 2.309 $1342.86 $46.69 $3546.41 5977 13,966 $1,690 NA 

I 0+ Backward Inclined Indoor Blower 9.99 7.00 $934.03 $0.03 $2158.62 2.311 $1342.86 $46.69 $3548.17 5803 13,732 $\,656 0.05 

2 I + Indoor Coil Slit Fins 10.07 7.06 $934.25 $0.22 $2160.74 2.313 $1342.86 $46.69 $3550.29 5757 13,611 $1,642 0.08 

3 2 + Time Delay Relay 10.36 7.19 $940.75 $6.50 $2174.90 2.312 $1342.86 $46.69 $3564.45 5597 13,374 $1,608 0.22 

4 3 + Scroll Compressor: 11.30 EER 11.93 7.57 $965.13 $24.38 $2223.35 2.304 $1342.86 $46.69 $3612.90 4861 12,693 $1,488 0.33 

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 12.05 7.66 $971.43 $6.30 $2237.13 2.303 $1342.86 $39.08 $3619.07' 4811 12,545 $1,471 0.33 

6 5 + Increase Indoor Coil Fin Density to 14 fpi 12.09 7.70 $973.16 $1.73 $2242.14 2.304 $1342.86 $39.08 $3624.08 4797 12,484 $1,465 0.34 

7 6 + More Efficient IndoorPSC Fan Motor (68.5%) 12.43 7.81 $982.92 $9.76 $2262.56 2.302 $1342.86 $31.47 $3636.89 4665 12,308 $1,439 0.36 

8 7 + Demand Defrost 12.43 8.04 $994.42 $11.50 $2286.31 2.299 $1342.86 $31.47 $3660.64 4665 11,950 $1,408 0.40 

9 8 + Non-Bleed Thermostatic Expansion Valves 12.74 8.28 $1,016.08 $21.66 $2329.54 2.293 $1342.86 $31.47 $37Q3.87 4551 11,608 $1,370 0.49 

10 9 + Increase Indoor Coil Face Area to 7.50 sq.ft. 13.10 8.37 $1,033.92 $17.84 $2389.31 2.311 $1353.15 $31.47 $3773.93 4424 11,475 $1,348 0.66 

11 10 + Outdoor Coil Grooved Tubes 13.30 8.40 $1,048.28 $14.36 $2443.98 2.331 $1353.15 $31.47 $3828.60 4360 11,438 $1,339 0.80 

12 11 + Increase Outdoor Coil Face Area to 27.30 sg.ft 13.74 8.63 $1,106.40 $58.12 $2612.83 2.362 $1405.49 $31.47 $4049.79 4220 11,135 $1,301 1.29 

13 12 + Electronic Expansion Valve 13.93 8.68 $1,154.74 $48.34 $2768.70 2.398 $1405.49 $40.45 $4214.64 4161 11,072 $1,291 1.67 

14 13 + Outdoor ECM Fan Motor 14.02 8.79 $1,227.44 $72.70 $2971.53 2.421 $1405.49 $48.06 $4425.08 4137 10,936 $1,278 2.13 

15 14 + Increase Outdoor Coil Face Area to 36.50 sg.ft 14.20 8.86 $1,295.30 $67.86 $3200.41 2.471 $1467.22 $48.06 $4715.69 4084 10,844 $1,265 2.75 

16 15 + Indoor ECM Fan Motor 14.89 8.95 $1,475.55 $180.25 $3650.92 2.474 $1467.22 $63.68 $5181.82 3893 10,733 $1,240 3.63 

17 16 + Two-Speed Recip-Compressor System 16.48 8.96 $1,664.30 $188.75 $4227.83 2.540 $1467.22 $80.83 $5775.88 3519 10,722 $1,207 4.61 

18 16 + Variable-Speed Recip-Compressor System 16.65 9.49 $2,075.55 $600.00 $5477.98 2.639 $1467.22 $133.11 $7078.31 3481 10,127 $1,153 6.58 

19 16 + Two-Speed Scroll-Compressor System 16.78 9.73 $1,975.55 $500.00 $5705.34 2.888 $1467.22 $128.74 $7301.30 3454 9,875 $1,130 6.70 

20 16 + Variable-Speed Scroll-Compressor System 18.59 10m $2,125.55 $650.00 $6495.56 3.056 $1467.22 $135.29 $8098.07 3118 9,603 $1,078 7.44 

Assumptions: 

Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). The interpolated value for 1999 is 0.082 $/kWh (1991$) or 0.085 after adjusting for inflation from 1991 to 1992. The electricity price enduse factor for CAC is 1.0 (no adjustment). 

Lifetime = 15 years. 

Baseline unit includes: 

Indoor Coil: 6.00 sg.ft., \3 fins/inch, Wavy Fins, 4 tube rows, Groove Tubes 

Outdoor Coil: 19.5 sg.ft., 20 fins/inch, Slit Fins, 2 tube rows, Smooth Tubes 

Compressor: Reciprocating, 10.49 EER (nominal); Accumulator 

Indoor Fan Motor: PSC, 58.5% efficient 

Outdoor Flln Motor: PSC, 55.0% ",'odent 

Hnhunccmcnl Devices: Norw 

4 Maximum Sensible Heat Ratio = 76.5% 

Non-Bleed Thennostatic Expansion Valves replace the need for a Time Delay Relay; Accumulator still required due to excess refrigerant. 

6 Evaporator ECM Fan Motor is modulated. Cost of fan motor includes electronic modulating controls. 

Condenser ECM Fan Motor is run at a single speed. 

617/94 

Ufecycle Costs Cumulative 

Cost of Conserved Energy 

(1992$) (centslkWh) 

4% 6% 10% 4% 6% 10% 

$22,341 $19,964 .$16,404 NA NA NA 

$21,958 $19,630 $16,143 0.09 0.10 0.13 

$21,802 .$19,494 $16,037 0.16 0.18 0.23 

$21,442 $19,181 $15,795 0.43 0.49 0.62 

$20,156 $18,064 $14,930 0.54 0.61 0.78 

$19,975 $17,907 $14,808 0.56 0.64 0.82 

$19,909 $17,850 $14,765 0.59 0.68 0.87 

$19,632 $17,609 $14,579 0.62 0.71 0.91 

$19,318 $17,338 $14,372 0.78 0.90 1.J4 

$18,932 $17,006 $14,121 0.99 1.J4 1.45 

$18,757 S16,862 $14,024 1.32 1.51 1.93 

$18,717 $16,834 .$14,014 1.57 1.80 2.29 

$18,519 $16,689 $13,948 2.58 2.95 3.77 

$18,570 .$16,755 $14,035 3.31 3.79 4.84 

$18,629 .$16,833 $14,142 4.29 4.92 6.28 

$18,784 $17,005 $14,340 5.55 6.36 8.12 

$18,965 $17,222 $14,611 7.06 8.08 10.32 

$19,197 $17,499 $14,957 8.16 9.34 11.92 

$19,902 $18,281 $15,851 12.73 14.57 18.60 

$19,863 $18,274 $15,895 13.39 15.33 19.57 

$20,086 $18,570 $16,299 14.32 16.39 20.93 
6/7/94

Life Cycle Cost for 5-ton Single Package System

Central Heat Pump

$20,200

$19,800

$19,400

$19,000

A $18,600

a

U $18,200

$17,800

$17,400

$17,000

$16,600

9.0 10.0 11.0 12.0

®_ 6% discount rate

13.0 14.0 15.0

SEER

16.0 17.0 18.0 19.0

EE-RM-93-801 COMMENT 0DD

6/7/94 

Life Cycle Cost for 5-ton Single Package System 

Central Heat Pump 

$20,200 

0 

$19,800 \ 1-11-_- 6% discount rate I 

2 

$19,400 

3 

$19,000 

,-... 

~ 20 ~ $18,600 

a\ 

~ 

'-' 18 

u $18,200 11119 

U 4 ..:l 

$17,800 

7 

$17,400 8 1 

$17,000 \0. 15 

$16,600 

9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 

SEER 
6/7/94

Life Cycle Cost for 5-ton Single Package System

Central Heat Pump

$23,000

$22,000

$21,000

$20,000

$16,000

$15,000

$14,000

$13,000

9.0 10.0 11.0 12.0

4% discount rate

- - - 6% discount rate

®- - - - 10% discount rate

13.0 14.0 15.0 16.0

SEER

17.0 18.0 19.0

EE-RM-93-801 COMMENT 0DD

$23,000 

$22,000 

$21,000 

$20,000 

,-,. $19,000 ~ 

~ 0\ 

C $18,000 

U 

U 

~ $17,000 

$16,000 

$15,000 

$14,000 

$13,000 

9.0 10.0 11.0 

6/7/94 

Life Cycle Cost for S-ton Single Package System 

Central Heat Pump 

, '+ "-, '+ 

+, ,+., 

12.0 

+-, '+-+, --+.++ 

13.0 14.0 

SEER 

~ .. .. ... 

---0- 4% discount rate 

- - -6 - - 6% discount rate 

/ 

- - -+- - - - 10% discount rate 

, ,+ 

,++ 

< ' 

, -:. '. '. :, -' ---' - . - - - .. - -+ <.' •• -

15.0 16.0 17.0 18.0 19.0