LAWRENCE BERKELEY LABORATORY

Bldg : 90 Room: 4000 510 486-6493

September, 29, 1993

MEMORANDUM

TO: Barry Berlin, DOE

FROM: Isaac Turiel, LBL

RE:

Enclosed please find LCC analyses for central air conditioners/heat pumps (modified

as requested by Ed Pollack) and furnaces. Please replace any previous versions of LCC

analyses for these products with the enclosed . If you have any questions please call me

at your convenience.

EE-RM-93-801 COMMENT 0CC

/ 

i 

I. LAWRENCE BERKELEY lABORATORY 

Bldg: 90 Room: 4000 510 486-6493 

Septem her, 29, 1993 

MEMORANDUM 

TO: Barry Berlin, DOE 

FROM: Isaac Turiel, LBL 

RE: 

Enclosed please find Lee analyses for central air conditioners/heat pumps (modified 

as requested by Ed Pollack) and furnaces. Please replace any previous versions of Lee 

analyses for these products with the enclosed. If you have any questions please call me 

at your convenience. 

.. 
9/1 7/93

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

Level Design Option

SEER Manufr

Cost

Incr.

Manufr

Cost

Installed

Installation MaintenanceConsum

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

0 Baseline 10.00 $474.00 - $972.71 $46.69 $2185.44 3427 $290 NA $5,415 $5,007 $4,395 NA NA NA

1 0+ Backward Inclined Indoor Blower 10.28 $474.04 $0.04 $972.71 $46.69 $2185.54 3337 $283 0.01 $5,330 $4,933 $4,337 0.01 0.01 0.01

2 1 + Evaporator Slit Fins 10.40 $474.13 $0.09 $972.71 $46.69 $2185.76 3297 $279 0.03 $5,292 $4,900 $4,311 0.02 0.03 0.03

3 2+ Reciprocating Compressor: 10.91 EER .11.34 $481.51 $7.38 $972.71 $46.69 $2203.91 3025 $256 0.54 $5,054 $4,694 $4,154 0.41 0.47 0.60

4 3 + Mote Efficient Condenser PSC Fan Motor (65.0%) 11 .47 $486.46 $4.95 $972.71 $39.08 $2208.48 2990 $253 0.62 $5,026 $4,670 $4,136 0.47 0.54 0.69

5 4 + More Efficient Evaporator PSC Fan Motor (68.5% 11.73 $493.68 $7.22 $972.71 $31.47 $2218.63 2922 $248 0.78 $4,972 $4,624 $4,103 0.59 0.68 0.86

6 5 + Time Delay Relay 12.18 $500.18 $6.50 $97271 $31.47 $2234.62 2815 $239 0.95 $4,888 $4,552 $4,050 0.72 0.83 1.06

7 6+ Condenser Grooved Tubes 12.62 $506.13 $5.95 $972.71 $31.47 $2249.26 2716 $230 1.06 $4,809 $4,485 $4,000 0.81 0.92 1.18

8 7 + Increase Evaporator Fm Density to 14 fpl 12.68 $506.88 $0.75 $972.71 $31.47 $2251.10 2704 $229 1.07 $4,800 $4,477 $3,995 0.82 0.94 1.19

9 8 + Scroll Compressor : 11.50 EER / Non-Bleed TXV 13.51 $543.29 $36.41 $972.71 $31.47 $2340.67 2538 $215 2.06 $4,732 $4,430 $3,977 1.57 1.80 2.29

10 9 + Increase Evaporator Face Area to 6 .60 aq.ft. 14.40 $565.51 $22.22 $989.69 $31 .47 $2412.31 2381 $202 2.56 $4,656 $4,373 $3,948 1.95 2.23 2.85

11 10+ Increase Condenser Face Area to 18.03 sq.fl. 15.19 $586.24 $20.73 $1024.25 $31.47 $2497.87 2257 $191 3.15 $4,625 $4,356 $3,953 2.40 2.75 3.51

12 11 + Increase Evaporator Face Area to 7.50 sq.R 15.37 $594.35 $8.11 $1030.42 $31.47 $2523.99 2230 $189 3.34 $4,626 $4,360 $3,962 2.54 2.91 3.72

13 12+ Increase Condenser Face Area to 28 .33 sq.tt. 15.82 $635.95 $41.60 $1099.53 $31.47 $2695.44 2167 $184 4.78 $4,738 $4,480 $4,093 3.64 4.17 5.32

14 13 + Evaporator ECM Fan Motor 16.40 $777.26 $141.31 $1099.53 $47.09 $3058.68 2091 $177 7.71 $5,029 $4,780 $4,407 5.88 6.73 8.59

15 14 + Electronic Expansion Valve 16.60 $853.43 $76.17 $1099.53 $56.07 $3255.04 2066 $175 9.27 $5,202 $4,955 $4,587 7.06 8.09 10.33

16 15 + Condenser ECM Fan Motor 16.75 $919.98 $66.55 $1099.53 $63.68 $3426.36 2047 $173 10.61 $5,355 $5,111 $4,746 8.09 9.26 11.82

17 16 + Two-Speed Recip-Compressor System 18.20 $1,100.67 $180.69 $1099.53 $76.66 $3883.84 1884 $160 12.98 $5,659 $5,435 $5,098 9.90 11.33 14.47

18 16+ Variable-Speed Recip-Compressor System 18.58 $1,511.92 $591.94 $1099.53 $120.59 $4939.44 1846 $156 20.54 $6,679 $6,459 $6,129 15.66 17.93 22.89

19 16+ Two-Speed Scroll-Compressor System 18.91 $1,411.92 $491.94 $1099.53 $116.22 $4689.07 1814 $154 18.30 $6,398 $6,182 $5,858 13.95 15.97 20.40

20 16+ Variable-Speed Scroll-Compressor System 21 . 18 $1,561 .92 $641.94 $1099.53 $122.78 $5064.63 1619 $137 18.78 $6,590 $6,397 $6,108 14.32 16.39 20.93

AssumlWons1 Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOEs 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. Markup factor -2.46.

3 Baseline unit includes:

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

Condenser: 12.88 sq.fl., 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 0CC

9/17/93 

Life Cycle Costs aDd Payback Periods 013400, Spilt System Central Air Conditioner 

Ina. Installed Annual Annual CumuJ. Lifecycle Costs Cumulative 

SEER Manufr Manufr Inslallation MalnteaanceCollSW1lel E1ec. Energy Payback: Cost of Conserved Energy 

Leve Design OptIon Cost Cost Cost Cost Cost use cost Period (1992$) (centsIkWh) 

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

0 Baseline 10.00 $474.00 - $972.71 $46.69 $2185.44 3427 $290 NA $5,415 $5,007 $4,395 NA NA NA 

1 o + Bacltwud Inc;1iDed Indoor Blower 10.28 $474.04 $0.04 $972.71 $46.69 $2185.54 3337 $283 0.01 $5,330 $4,933 $4,337 0.01 0.01 0.01 

2 1 + Evaporator Slit FilII 10.40 $474.13 $0.09 $972.71 $46.69 $2185.76 3297 $279 0.03 $5,292 $4,900 $4,311 0.02 0.03 0.03 

3 2 + Reciprocallng CllIIIpralor: 10.91 EER .11.34 $481.51 $7.38 $972.71 $46.69 $2203.91 3025 $256 0.54 $5,054 $4,694 $4,154 0.41 0.47 0.60 

4 3 + More EffICient Condenser PSC Fan Motor (65.0%) 11.47 $486.46 $4.95 $972.71 $39.08 $2208.48 2990 $253 0.62 $5,026 $4,670 $4,136 0.47 0.54 0.69 

5 4 + More EffICient Evaporator PSC Fan Motor (68.5% 11.73 $493.68 $7.22 $972.71 $31.47 $2218.63 2922 $248 0.78 $4,972 $4,624 $4,103 0.59 0.68 0.86 

6 5 + Time Delay Relay 12.18 $500.18 $6,50 $972.71 $31.47 $2234.62 2815 $239 0.95 $4,888 $4,552 $4,050 0.72 0.83 1.06 

7 6 + Condenser Grooved Tubes 12.62 $506.13 $5.95 $972.71 $31.47 $2249.26 2716 $230 1.06 $4,809 $4,485 $4,000 0.81 0.92 1.18 

8 7 + Increase Evaporator Fm Density to 14 fpi 12.68 $506.88 $0.75 $972.71 $31.47 $2251.10 2704 $Z29 1.07 $4,800 $4,477 $3,995 0.82 0.94 1.19 

9 8+ Scroll Compressor: 11.50 EER/Non-Bleed TXV 13.51 $543.29 $36.41 $972.71 $31.47 $234Q.67 2538 $215 2.06 $4,732 $4,430 $3,977 1.57 1.80 2.29 

10 9 + Increase Evaporator FICe Area to 6.60 Iq.n. 14.40 $565.51 $22.22 $989.69 $31.47 $2412.31 2381 $202 2.56 $4,656 $4,373 $3,948 1.95 2.23 2.85 

11 10+ Increase CondenserFICeArea to 18.031q.n. 15.19 $586.24 $20.73 $1024.25 $31.47 $2497.87 2257 $191 3.15 $4,625 $4,356 $3,953 2.40 2.75 3.51 

12 11 + lncreue Evaporator FICe Area to 7.50 Iq.n. 15.37 $594.35 $8.11 $1030.42 $31.47 $2523.99 2230 $189 3.34 $4,626 $4,360 $3,962 2.54 2.91 3.72 

13 12 + lncreue Condenser Face Area to 28.33 Iq.n. 15.82 $635.95 $41.60 $1099.53 $31.47 $2695.44 2167 $184 4.78 $4,738 $4,480 $4,093 3.64 4.17 5.32 

14 13 + Evaporator ECM Fan Motor 16.40 $777.26 $141.31 $1099.53 $47.09 $3058.68 2091 $177 7.71 $5,029 $4,780 $4,407 5.88 6.73 8.59 

15 14 + Electronic Expansion Valve 16.60 $853.43 $76.17 $loW.'S3 $56.07 $3255.04 2066 $175 9.27 $5,202 $4,955 $4,587 7.06 8.09 10.33 

16 15 + Condenser ECM Fan Motor 16.75 $919.98 $66.55 $1099.53 $63.68 $3426.36 2047 $173 10.61 $5,355 $5,111 $4,746 8.09 9.26 11.82 

17 16 + Two-Speed Recip-Compre$lor SyslfOl 18.20 $1,100.67 $180.69 $1099.53 $76.66 $3883.84 1884 $160 12.98 $5,659 $5,435 $5,098 9.90 11.33 14.47 

18 16 + Variable-Speed Recip-Compressor SyslfOl 18.58 $1,511.92 $591.94 $1099.53 $120.59 $4939.44 1846 $156 20.54 $6,679 $6,459 $6,129 15.66 17.93 22.89 

19 16 + Two-Speed Scroll-Compressor System 18.91 $1,411.92 $491.94 $1099.53 $116.22 $4689.07 1814 $154 18.30 $6,398 $6,182 $5,858 13.95 15.97 20.40 

20 16 + Variable-Speed Scroll-Compressor Sy5lf01 21.18 $1,561.92 $641.94 $1099.53 $122.78 $5064.63 1619 $137 18.78 $6,590 $6,397 $6,108 14.32 16.39 20.93 

AlSumptlOQl' 

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

2 Lifetime = 15 years. Markup factor =-2.46. 

3 Baseline unit includes: 

Evaporator: 4.13 sq.n., 13 fUlS/iJlcb, Wavy Fins, 3 tube rows, Groove Tubes 

Condenser: 12.88 sq.n., 20 fUlSfmcb, Slit Fins, Itubc 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. 
9/17/93

Life Cycle Cost for 3-ton Split System

Central Air Conditioner

$6,600 -r20

$6,200 --

$5,800 -}

$5,000 -}

$4,600 -}

$4,200

9.0

6% discount rate

i i i I I I i i i i i i i

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 0CC

$6,600 

$6,200 

$5,800 

9/17/93 

Life Cycle Cost for 3·ton Split System 

Central Air Conditioner 

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

o 

20 

$5,000 1 

3 

$4,600 6 

13 

$4,200 

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 
9/17/93

Life Cycle Cost for 3-ton Split System

Central Air Conditioner

$5,400

U

U

4% discount rate

- - - - 6% discount rate

- o- - - 10% discount rate

N

Iz

9.0 10.0 11.0 12.0 13.0 14.0

I .i

15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0

SEER

EE-RM-93-801 COMMENT 0CC

$7,000 

$6,600 

$6,200 

$5,800 

$5,000 

$4,600 

$4,200 

$3,800 

9.0 

9/17/93 

Life Cycle Cost for 3-ton Split System 

Central Air Conditioner 

-0-- 4% discount rate 

- - il - - 6% discount rate 

- - - -.- - - - 10% discount rate 

....... ,'.,' , Ii 

... -----. --- --.- ----.... 

10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 

SEER 

19.0 20.0 21.0 22.0 
9/30/93

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

Lever Design Option

SEER Manufr

Cost

Incr.

Manufr

Cost

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

0 Baseline 10.01 $666.00 - $1494.33 $46.69 $3412.48 5783 $490 NA $8,862 $8,173 $7,141 NA NA NA

1 0 + Backward Inclined Indoor Blower 10.29 $666.02 $0.02 $1494.33 $46.69 $3412.54 5625 $477 0.00 $8,714 $8,043 $7,039 0.00 0.00 0.00

2 1 + Evaporator Slit Fins 10.38 $666.23 $0.21 $1494.33 $46.69 $3413.13 5576 $473 0.04 $8,668 $8,003 $7,008 0.03 0.03 0.04

3 2 + Scroll Compressor. 11.30 EER 11 .88 $690.87 $24.64 $1494.33 $46.69 $3482.36 4871 $413 0.90 $8,073 $7,492 $6,623 0.69 0.79 1.01

4 3 +Time Delay Relay 12.34 $697.37 $6.50 $1494.33 $46.69 $3500.63 4689 $397 0.95 $7,919 $7,361 $6,523 0.72 0.83 1.06

5 4 + More Efficient Evaporator PSC Fat Motor (68.5% 12.65 $707.14 $9.77 $1494.33 $39.08 $3520.47 4573 $388 1.05 $7,830 $7,285 $6,469 0.80 0.92 1.17

6 5 + Non-Bleed Thermostatic Expansion Valve 12.97 $714.72 $7.58 $1494.33 $39.08 $3541.77 4462 $378 1.15 $7,746 $7,215 $6,418 0.88 1.01 1.29

7 6 + More Efficient Condenser PSC Fan Motor (65.0%) 13.09 $721.02 $6.30 $1494.33 $31.47 $3551.87 4420 $375 1.21 $7,718 $7,191 $6,402 0.92 1.05 1.35

8 7 + Inncresse Evaporator Fin Density to 14 fpi 13.14 $722.48 $1.46 $1494.33 $31.47 $3555.97 4405 $373 1.23 $7,708 $7,182 $6,396 0.94 1.07 1.37

9 8 + Increase Evaporator Face Area to 7.50 8q .ft. 13.53 $739.70 $17.22 $1504.62 $31.47 $3614.65 4276 $362 1.58 $7,644 $7,134 $6,371 1.21 1.38 1.76

10 9 + Condenser Grooved Tubes 13.69 $756.52 $16.82 $1504.62 $31.47 $3661.91 4226 $358 1.89 $7,644 $7,141 $6,386 1 .44 1.65 2.11

11 10 + Increase Condenser Face Area to 27.60 5q.ft. 13.95 $788.74 $32.22 $1535.49 $31.47 $3783.32 4148 $352 2.68 $7,693 $7,198 $6,458 2.04 2.34 2.98

12 11 + Increase Condenser Face Area to 36.50 sq.ft.. 14.22 $850.40 $61.66 $1595.21 $31.47 $4016.30 4069 $345 4.16 $7,851 $7,366 $6,640 3.17 3.63 4.63

13 12 + Evaporator ECM Fan Motor 14.84 $1,030.66 $180.26 $1595.21 $47.09 $4538.45 3899 $330 7.05 $8,213 $7,748 $7,052 5.38 6.15 7.86

14 13 + Electronic Expansion Valve 15.04 $1, 106.83 $76.17 $1595.21 $56.07 $4761.47 3847 $326 8.22 $8,387 $7,928 $7,242 6.27 7.17 9.16

15 14 + Condenser ECM Fan Motor 15.11 $1,179.53 $72.70 $1595.21 $63.68 $4973.37 3830 $325 9.43 $8,583 $8,126 $7,442 7.19 8.23 10.51

16 15 + Two-Speed Recip-Compressor System 16.76 $1 ,368.28 $188.75 $1595.21 $80.54 $5520.62 3452 $293 10.67 $8,773 $8,362 $7,746 8.13 9.31 11.89

17 15 + Variable-Speed Recip-Compressor System 17.67 $1,779.53 $600.00 $1595.21 $132.24 $6727.93 3275 $278 15.60 $9,815 $9,424 $8,840 11 .89 13.62 17.39

18 15 + Two-Speed Scroll-Compressor System 17.02 $1,679.53 $500.00 $1595.21 $127.87 $6442.56 3400 $288 15.00 $9,646 $9,241 $8,634 11.44 13.09 16.72

19 15 + Variable-Speed Scroll-Compressor stem 19.62 $1,829.53 $650.00 $1595.21 $134.43 $6870.62 2949 $250 14.40 $9,649 $9,298 $8,772 10.97 12.56 16.04

1 Electricity cost = 0.085 $/

kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOES 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. Markup factor= 2.81.

3 Baseline unit includes:

Evaporator. 6.00 sq.ft., 13 finafunch, Wavy Fins, 4 tube rows, Groove Tubes

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

Compressor. Reciprocsti^ 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 0CC

9/30/93 

Life Cycle Costs and Payback Periods of 5.lon, Split System Central Air Conditioner 

Incr. Installed Annual Annual Cumul. Lifecycle Costs Cumulative 

SEER Manufr Manufr Installation Maintenance Consumer E1ec. Energy Payback: Cost of Conserved Energy 

Leve Design Option Cost Cost Cost Cost Cost use cost Period (1992$) (cents/kWh) 

Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) k:Wh/yr (1992$) (years) 4% 6% 10% 4% 6% loqro 

0 Bueline 10.ot $666.00 - $1494.33 $46.69 $341248 5783 $490 NA $8,862 $8,173 $7,141 NA NA NA 

1 o + Backward Inclined Indoor Blower 10.29 $666.02 $0.02 $1494.33 $46.69 $341254 5625 $477 0.00 $8,714 $8,Q43 $7,039 0.00 0.00 0.00 

2 1 + Evaporator Slit Fins 10.38 $666.23 $0.21 $1494.33 $46.69 $3413.13 5576 $473 0.04 $8,668 $8,003 $7,008 0.03 0.Q3 0.04 

3 2 + Scroll Coqwessor: 11.30 EBR 11.88 $690.87 $24.64 $1494.33 $46.69 $3482.36 4871 $413 0.90 $8,073 $7,492 $6,623 0.69 0.79 1.01 

4 3 + Tune Delay Relay 12.34 $697.37 $6.50 $1494.33 $46.69 $3500.63 4689 $397 0.95 $7,919 $7,361 $6,523 0.72 0.83 1.06 

5 4 + More Efficient Evaporator PSC Fan Motor (68.5% 12.65 $707.14 $9.77 $1494.33 $39.08 $3520.47 4573 $388 1.05 $7,830 $7,285 $6,469 0.80 0.92 1.17 

6 5 + Non-Bleed Thermostatic Expansion Valve 1297 $714.72 $7.58 $1494.33 $39.08 $3541.77 4462 $378 1.15 $7,746 $7,215 $6,418 0.88 1.01 1.29 

7 6 + More Efficimt Condenser PSC Fan Motor (65.0%) 13.09 $721.02 $6.30 $1494.33 $31.47 $3551.87 4420 $375 1.21 $7,718 $1,191 $6,402 0.92 1.05 1.35 

8 7 + Increase Evaporlll(Jr Fin Density to 14 fpi 13.14 $72248 $1.46 $1494.33 $31.47 $3555.97 4405 $373 1.23 $7,708 $7,182 $6,396 0.94 1.07 1.37 

9 8 + Increase Evaporlll(Jr Face Area to 7.50 sq.ft. 13.53 $739.70 $17.22 $1504.62 $31.47 $3614.65 4276 $362 1.58 $7,644 $7,134 $6,371 1.21 1.38 1.76 

10 9 + Condenser Grooved Tubes 13.69 $756.52 $16.82 $1504.62 $31.47 $3661.91 4226 $358 1.89 $7,644 $7,141 $6,386 1.44 1.65 2.11 

11 10 + Increase Condenser Face Area to 27.60 sq.ft. 13.95 $788.74 $32.22 $1535.49 $31.47 $3783.32 4148 $352 268 $7,693 $7,198 $6,458 2.04 2.34 2.98 

12 11 + Increase Condenser Face Area to 36.50 sq.ft. 14.22 $850.40 $61.66 $1595.21 $31.47 $4016.30 4069 $345 4.16 $7,851 $7,366 $6,640 3.17 3.63 4.63 

i3 12 + EvaporalOr ECM Fan Motor 14.84 $1,030.66 $180.26 $1595.21 $47.09 $4538.45 3899 $330 7.05 $8,213 $7,748 $7,052 5.38 6.15 7.86 

14 13 + Electronic Expansion Valve 15.04 $1,106.83 $76.17 $1595.21 $56.07 $4761.47 3847 $326 8.22 $8,387 $7,928 $7,242 6.27 7.17 9.16 

15 14 + Condenser ECM Fan Motor 15.11 $1,179.53 $7270 $1595.21 $63.68 $4973.37 3830 $325 9.43 $8,583 $8,126 $7,442 7.19 8.23 10.51 

16 15 + Two-Speed Recip-CompreslOl' System 16.76 $1,368.28 $188.75 $1595.21 $80.54 $5520.62 3452 $293 10.67 $8,773 $8,362 $7,746 8.13 9.31 11.89 

17 15 + Variahlo-Speed Recip-CompreslOl' System 17.67 $1,779.53 $600.00 $1595.21 $132.24 $6727.93 3275 $278 15.60 $9,815 $9,424 $8,840 11.89 13.62 17.39 

18 15 + Two-Speed Scroll-CompreslOl' System 17.02 $1,679.53 $500.00 $1595.21 $127.87 $644256 3400 $288 15.00 $9,646 $9,241 $8,634 11.44 13.09 16.72 

19 1 S + Variahlo-Speed Scroll-Compressor System 19.62 $1,829.53 $650.00 $1595.21 $134.43 $6870.62 2949 $250 14.40 $9,649 $9,298 $8,772 10.97 12.56 16.04 

Assu!lJlllions; 

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 Outloolc 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 adjuS1ment). 

2 Lifetime = 15 years. Markup factor = 281. 

3 Bueline unit includes; 

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

Condenser: 23.00 sq.ft., 20 finsfmch, Slit Fins, 2 tube rows, Smooth Tubes 

Compressor: Reciplocalin&. 10.49 EBR (nominal); Accumullll(Jr 

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 Evaporlll(Jr ECM Fan Motor is mJdulated. Cost of fan motor includes electronic modulating controls. 

7 Condenser ECM Fan Motor is run at a single speed. 
9/29/93

Life Cycle Cost for 5-ton Split System

Central Air Conditioner

$9,500 -i19

$9,000 -I

$7,500 - -

6% discount rate

$7,000

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 0CC

u 

U 

$9,500 

$9,000 

..:l $8,000 

$7,500 

$7,000 

9.0 

9/29/93 

Life Cycle Cost for 5·ton Split System 

Central Air Conditioner 

1-0-- 6% discount rate I 

·0 

3 

4 12 

5 

11 

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 
9/29/93

Life Cycle Cost for 5-ton Split System

Central Air Conditioner

$8,200

U $7,800

N

4% discount rate

- - - - 6% discount rate

•- - - - 10% discount rate

N

•-•

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 0CC

$9,800 

$9,400 

$9,000 

$8,600 

-

~ $8,200 ~ 

.... 

U --

U $7,800 ~ 

$7,400 

$7,000 

$6,600 

$6,200 

9.0 10.0 

9/29/93 

Life Cycle Cost for 5-ton Split System 

Central Air Conditioner 

--0- 4% discount rate 

- - i:s. - - 6% discount rate 

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

, 

, 

, 

, 

,+ 

11.0 12.0 13.0 14.0 15.0 

SEER 

16.0 

... 

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

9/17/93

Ina. Installed Annual Bloc Use Annual Cumul. Lifecycle Costs Cumulative

SEER HSPF Manufr Manuf'r Installation Maintenance consumer Cooling Heating Energy Payback Cost of Conserved Energy

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

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

0 Baseline 10.00 6.89 $677.00 - $902.53 $46.69 $2743.27 3651 8,132 $999 NA $13,848 $12,444 $10,340 NA NA NA 1 0+ Backward Inclined Indoor Blower 10.30 7.00 $677.00 $0.00 $902.53 $46.69 $2743.27 3544 8,011 $979 0.00 $13,633 $12,256 $10,193 0.00 0.00 0.00

2 1 + Indoor Coil Slit Fins 10.43 7.11 $677.03 $0.03 $902.53 $46.69 $2743.35 3500 7,889 $965 0.00 $13,476 $12,119 $10,085 0.00 0.01 0.01

3 2 + Increase Indoor Coil Fin Density to 14 fpi 10.47 7.13 $677.69 $0.66 $902.53 $46.69 $2745.10 3486 7,858 $962 0.05 $13,435 $12,083 $10,058 0.10 0.11 0.15

4 3 + More Efficient Indoor PSC Fan Motor (68.5%) 10.72 7.22 $684.89 $7.20 $902.53 $39.08 $2756.57 3406 7,760 $946 0.25 $13,279 $11,948 $9,955 0.49 0.56 0.71

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 10.83 7.32 $691.19 $6.30 $902.53 $31.47 $2765.66 3372 7,658 $935 0.35 $13,160 $11,845 $9,876 0.72 0.82 1.05

6 5 + Time Delay Relay 11.17 7.47 $697.69 $6.50 $902.53 $31.47 $2782.88 3268 7,506 $913 0.46 $12,937 $11,652 $9,729 0.93 1.06 1.36

7 6+ Reciprocating Compressor 11.26 EER 11 .69 7.68 $708.68 $10.99 $902.53 $31.47 $2812.00 3125 7,295 $883 0.59 $12,632 $11,390 $9,530 1.17 1.34 1.72

8 7 + Increase Indoor Coil Face Area to4.97 sq.ft. 12.41 7.97 $722.05 $13.37 $912.27 $31.47 $2857.17 2941 7,037 $846 0.74 $12,261 $11,071 $9,290 1.44 1.65 2.11

9 8 + Demand Defioat 12.41 8.20 $733.55 $11.50 $912.27 $31.47 $2887.65 2941 6,832 $828 0.85 $12,098 $10,933 $9,188 1.83 2.09 2.67

10 9 + Outdoor Coil Grooved Tuba 12.73 8.24 $740.52 $6.97 $912.27 $31.47 $2906.12 2869 6,803 $820 0.91 $12,021 $10,868 $9,142 1.87 2.14 2.74

11 10 + Increase Indoor Coil Face Area to 6.39 sq.ft. 13.12 8.40 $755.60 $15.08 $922.01 $31.47 $2955.82 2782 6,674 $802 1.08 $11,868 $10,741 $9,052 2.20 2.52 3.22

12 11+Scroll Casnpressor. 11.50EER 13.70 8.50 $774.58 $18.98 $922.01 $31.47 $3006.12 2665 6,591 $785 1.23 $11,729 $10,626 $8,974 2.40 2.74 3.50

13 12 + Nan-Blood Thermostatic Expansion Valves 14.04 8 .73 $787.03 $12.45 $922.01 $31.47 $3039.11 2600 6,422 $765 1.26 $11,541 $10,466 $8,855 2.53 2.90 3.70

14 13 + Increase Outdoor Coil Fee* Area to 21.00 sq.ft 14.78 9.06 $811.89 $24.86 3962.27 $31.47 $3145.25 2471 6,184 $734 1.52 $11,302 $10,270 $8,725 3.06 3.51 4.48

15 14 + Increase Indoor Coil Face Area to 7.50 sq.ft. 15 .00 9.13 $822.19 $10.30 $969.88 $31.47 $3180.16 2434 6,139 $727 1.61 $11,259 $10,238 $8,707 3.23 3.70 4.72

16 15 + Increase Indoor Coil Tube Density to 4 rows 15.12 9.20 $844.58 $22.39 $969.88 $31.47 $3239.49 2416 6,092 $721 1.79 $11,257 $10,243 $8,724 3.61 4.13 5.28

17 16 + Increase Outdoor Coil Fate Area to 30.00 sq.ft 15.48 9.32 $890.19 $45.61 $1030.27 $31.47 $3420.75 2359 6,018 $710 2.35 $11,314 $10,316 $8,821 4.71 5.40 6.89

18 17 + Outdoor ECM Fan Motor 15.59 9.45 $962.89 $72.70 $1030.27 $39.08 $3621.01 2343 5,935 $702 2.95 $11,422 $10,435 $8,958 6.03 6.91 8.82

19 18+ Electronic Expansion Valve 15.79 9.50 $1,011.23 $48.34 $1030.27 $48.06 $3758.09 2313 5,904 $696 3.36 $11,502 $10,522 $9,055 6.82 7.81 9.97

20 19 + Indoor ECM Fan Motor 16.36 9.56 $1,152.53 $141.30 $1030.27 $63.68 $4148.16 2232 5,865 $686 4.50 $11,779 $10,814 $9,368 8.91 10.19 13.02

21 20+Two-Speed Recip-CompresaorSystem 17.90 9.60 $1,332.79 $180.26 $1030.27 $77.62 $4639.79 2040 5,837 $668 5.73 $12,062 $11,124 $9,718 10.59 12.12 15.47 22 20+Variable-Speed Recip-Canpressor Syatern 18.24 10.01 $1,744.04 $591.51 $1030.27 $123.47 $5775.45 2002 5,601 $644 8.56 $12,941 $12,034 $10,677 16.54 18.93 24.17

23 20+Two-Speed Scroll-Compressor System 18.48 10.19 $1,644.04 $491.51 $1030.27 $119.10 $5506.08 1976 5,500 $634 7.57 $12,552 $11,661 $10,326 14.84 16.99 21.69

24 Variable-Specd Scroll-Can 'rS ten 20.83 11.01 $1,794.04 $641.51 $1030.27 $125.66 $5910.14 1753 5,089 $580 7.56 $12,358 $11,543 $10,321 15.00 17.18 21.93

Assumptions:

1 Electricity cost - 0.085 $/kWh (avenge 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 s 15 years. Markup factor - 2.65.

3 Baseline unit includes:

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

Outdoor Coil: 15. 00 sq.IL, 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 0CC

Life Cycle Costs and Payback Perfods of3-ton, Split System Central Heat Pump 

Incr. Installed Annual Elce Use Annual Cumul. lifecycle Costs 

SEER HSPF Manufr Manufr Installatioo Maintatance COIIIIumcr Cooling Heating Energy Payback 

Level DecipOptioo Cost Cost Cost Cost cost cost Period (1992$) 

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

0 Baseline 10.00 6.89 $677.00 - $90253 $46.69 $2743.27 3651 8,132 $999 NA $13,848 $12,444 

1 0+ Backward Inclined Indoor Blower 10.30 7.00 $677.00 $0.00 $90253 $46.69 $2743.27 3544 8,011 $979 0.00 $13,633 $12,256 

2 1 + Indoor Coil Slit FinI 10.43 7.11 $677.03 $0.03 $90253 $46.69 $2743.35 3500 7,889 $965 0.00 $13,476 $12,119 

3 2 + IncreJllC Indoor Coil rill Dcnoity to 14 fpi 10.47 7.13 $677.69 $0.66 $90253 $46.69 $2745.10 3486 7,858 $962 0.05 $13,435 $12.083 

4 3 + More Efficient Indoor PSC Fan Motor (68.5%) 10.72 7.22 $684.89 $7.20 $90253 $39.08 $2756.57 3406 7,760 $946 0.25 $13,279 $11,948 

5 4 + More Efficiatt Outdoor PSC Fan Motor (65.0% 10.83 7.32 $691.19 $6.30 $90253 $31.47 $2765.66 3372 7,658 $935 0.35 S13,16O $11,845 

6 5 + Time DeIlY Relay 11.17 7.47 $697.69 $6.50 $90253 $31.47 $278288 3268 7,506 $913 0.46 $12,937 $11,652 

7 6 + Reciprocating Comprcuor: 11.26 EER 11.69 7.68 $708.68 $10.99 $90253 $31.47 $281200 3125 7,295 $883 0.59 $12,632 $11,390 

8 7 + IncreJllC Indoor Coil Face Area to 4.97 aq.ft. 12.41 7.97 $72205 $13.37 $91227 $31.47 $2857.17 2941 7,037 $846 0.74 S12,261 $11,071 

9 8 + Demand Defrost 12.41 8.20 $733.55 $11.50 $91227 $31.47 $2887.65 2941 6,832 $828 0.85 $12,098 $10,933 

10 9 + Outdoor Coil Grooved Tubel 12.73 8.24 $740.52 $6.97 $91227 $31.47 $2906.12 2869 6,803 $820 0.91 $12,021 $10,868 

11 10+ Increase Indoor Coil Face Area to 6.39 aq.ft. 13.12 8.40 $755.60 $15.08 $92201 $31.47 $2955.82 2782 6,674 $802 1.08 $11,868 $10,741 

12 11 + Scroll Comprcuor: 11.50 EER 13.70 8.50 $774.58 $18.98 $92201 $31.47 $3006.12 2665 6,591 $785 1.23 $11,729 S10,626 

i3 12 + Noo-BI-t Thermostatic &palllion ValvN 14.04 8.73 $787.03 $12.45 $92201 $31.47 $3039.11 2600 6,422 $765 1.26 $11,541 $10,466 

14 13 + Increllc Outdoor Coil Face Area to 21.00 aqJt 14.78 9.06 $811.89 $24.86 $962.27 $31,47 $3145.25 2471 6,184 $734 1.52 $11,302 $10,270 

15 14 + Incrca.e Indoor Coil Face Area to 7.SO aq.ft. 15.00 9.13 $822.19 $10.30 $969.88 $31.47 $3180.16 2434 6,139 $727 1.61 $11,259 $10,238 

16 15 + Increase Indoor Coil Tube Density to 4 roWi 15.12 9.20 $844.58 $22.39 $969.88 $31.47 $3239.49 2416 6,092 $721 1.79 511,257 $10,243 

17 16 + Increase Outdoor Coil Facc Area to 30.00 aqJ\ 15,48 9.32 $890.19 $45.61 $1030.27 $31.47 $3420.75 2359 6,018 $710 2.35 $11,314 $10,316 

18 17 + Outdoor ECM Fan Motor 15.59 9.45 $96289 $72.70 $1030.27 $39.08 $3621.01 2343 5,935 $702 2.95 Sl1,422 $10,435 

19 18 + Electronic Expansioo Valve 15.79 9.50 $1,011.23 $48.34 $1030.27 $48.06 $3758.09 2313 5,904 $696 3.36 SII,502 SI0,522 

20 19 + Indoor ECM Fan Motor 16.36 9.56 $1,152.53 $141.30 $1030.27 $63.68 $4148.16 2232 5,865 $686 4.50 $11,779 510,814 

21 20 + Two-Speed Rccip-Comprcasor SYJtan 17.90 9.60 $1,332.79 5180.26 51030.27 $77.62 $4639.79 2040 5,837 $668 5.73 $12,062 SII,I24 

22 20 + Variab1e-Sp-t Rccip-Comprcasor System 18.24 10.01 $1,744.04 $591.51 S1030.27 $123.47 $5775.45 2002 5,601 $644 8.56 $12,941 $12,034 

23 20 + Two-Speed Scroll-Comprcasor System 18.48 10.19 $1,644.04 $491.51 $1030.27 $119.10 $5506.08 1976 5,500 $634 7.57 S12,552 $11,661 

24 20 + Variab1e-Sp-t Scroll-ComprcasOr Syatem 20.83 11.01 $1,794.04 $641.51 $1030.27 $125.66 $5910.14 1753 5,089 $580 7.56 $12,358 $11,543 

Assl!!IJptiO!Jl' 

1 Electricity cost. 0.085 $!1cWh (average cost in 1999 obtained from an intctpolatim of tile 1995 and 2000 prices of electricity forecast in DOE's Annual EnC'KY Outlook 1993, inflated 

to 1992 dollars). The inIcrpolated value for 1999 is 0.082 $!1cWh (1991$) or 0.085 aft ... adjusting for inflation from 1991 to 1992 The electricity price enduse factor for CAC is 1.0 (no adjustment). 

2 Lifetime - 15 ycara. Mukup factor. 2.65. 

3 Baseline unit includes: 

Indoor Cni1: 3.55 aq.ft.. 13 fimlinch, Wavy FinI, 3 tube rows, Groove Tubes 

Outdoor Coil: 15.00 aq.ft., 20 fim/inch, Slit rlnS, I tube row, Smooth Tubes 

Compressor: Reciprocating, 10.80 EER (nominal); Accumulator 

Ind'oor Fan Motor: PSC. 58.5% efficient . 

Outdoor Fan Motor: PSC. 55.0% efficient 

Enhancement Devices: None 

4 All Two-Speed and Variable-Sp-t Compressor Syttcms include an Accumulator. 

5 Maximwn Sensible Heat Ratio. 76.5% 

6 Noo-Blced Thcunostatic ExpmGon ValYN replacc the n-t for a Time Delay Relay and an Accumulator. 

7 Evaporator ECM Fan Motor ill modulated. Cost of fan motor includca electronic modulating CIllltrols. 

Condenser ECM Fan Motor is run at a sinsIe sp-t. 

10% 

$10,340 

$10,193 

$10,085 

$IO,OS8 

$9,955 

$9,876 

59,729 

S9,530 

59,290 

$9,188 

$9,142 

$9,052 

$8,974 

$8,855 

$8,725 

$8,707 

58,724 

S8,821 

58,958 

$9,055 

$9,368 

S9,718 

$10,677 

$10,326 

S1O,321 

9/17/93 

Cumulative 

Cost of Conserved Energy 

(ccnt.s/kWh) 

4% 6% 10% 

NA NA NA 

0.00 0.00 0.00 

0.00 0.01 0.01 

O.W 0.11 (l.IS 

0.49 0.56 0.71 

0.72 0.82 1.05 

0.93 1.06 1.36 

1.17 1.34 1.72 

1.44 1.65 2.11 

1.83 2.09 2.67 

1.87 2.14 2.74 

2.20 2.52 3.22 

240 2.74 3.50 

2.53 2.90 3.70 

3.06 3.51 4.48 

3.23 3.70 4.72 

3.61 4.13 5.28 

4.71 5.40 6.89 

6.03 6.91 8.82 

6.82 7.81 9.97 

8.91 10.19 13.02 

10.59 1212 15.47 

16.54 18.93 24.17 

14.84 16.99 21.69 

15.00 17.18 21.93 
9/17/93

Life Cycle Cost for 3-ton Split System

Central Heat Pump

$12,500 -r

6% discount rate

$12,000 -E16

7

U

U

a

$11,500 -}

$11,000 -^-

$10,500 -^-

24

17

15

$10,000

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 0CC

$12,500 0 

$12,000 

9/17/93 

Life Cycle Cost for 3-ton Split System 

Central Heat Pump 

I-------[}--- 6% discount rate I 

22 
9/17/93

Life Cycle Cost for 3-ton Split System

Central Heat Pump

$14,000

$13,500

$13,000

$12,500

$12,000

609.

.' $11,500 aN7

V $11,000

a

$10,500

$10,000

$9,500

$9,000

$8,500

9.0

6,

N

N

-d

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

4% discount rate

- - - - 6% discount rate

- +- - - - 10% discount rate

EE-RM-93-801 COMMENT 0CC

10.0 11.0 12.0 

'+ 

9/17/93 

Life Cycle Cost for 3-ton Split System 

Central Heat Pump 

-0-4% 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 
Life Cycle Costs and Payback Periods of 5-ton, Split System Central Heat Pump

9/29/93

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

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

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

Btuh/W Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) kWh/ kWh/ (1992$) (years) 4% 6% 10% 4% 6% 15%-

0 Baseline 10.00 7.09 $934.00 - $1161.54 $46.69 $3954.19 5798 13,556 $1,640 NA $22,193 $19,886 $16,431 NA NA NA

1 0+ Backward Inclined Indoor Blower 10.30 7.21 $934.03 $0.03 $1161.54 $46.69 $3954.28 5629 13,328 $1,607 0.00 $21,820 $19,560 $16,176 0.00 0.01 0.01

2 1 + Indoor Coil Slit Fins 10.38 7.27 $934.25 $0.22 $1161.54 $46.69 $3954.93 5584 13,211 $1,593 0.02 $21,667 $19,427 $16,072 0.03 0.04 0.05

3 2+ Time Delay Relay 10.68 7.40 $940.75 $6.50 $1161.54 $46.69 $3974.04 5429 12,981 $1,560 0.25 $21,323 $19,129 $15,842 0.48 0.55 0.71

4 3+Scroll Compressor: 11.30EER 12.30 7.80 $965.13 $24.38 $1161.54 $46.69 $4045.71 4715 12,320 $1,444 0.47 $20,100 $18,069 $15,028 0.76 0.87 1.11

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 12.42 7.89 $971.43 $6.30 $1161.54 $39.08 $4056.62 4666 12,176 $1,428 0.48 $19,929 $17,922 $14,915 0.81 0.93 1.19

6 5 + Increase Indoor Coil Fin Density to 14 fpi 12.46 7.93 $973.16 $1.73 $1161.54 $39.08 $4061.71 4653 12,117 $1,421 0.49 $19,865 $17,866 $14,873 0.84 0.97 1.23

7 6+More EfficiettIndoor PSCFan Motor (68.5%) 12.81 8.04 $982.92 $9.76 $1161.54 $31.47 $4082.80 4525 11,946 $1,396 0.53 $19,605 $17,642 $14,702 0.91 1.04 1.33

8 7 + Demand Defrost 12.81 8.29 $994.42 $11.50 $1161.54 $31.47 $4116.61 4525 11,598 $1,367 0.59 $19,311 $17,389 $14,511 1.15 1.31 1.68

9 8+Non-Bleed Themostatic Expansion Valves 13.13 8 .53 $1,016.08 $21.66 $1161.54 $31.47 $4180.29 4415 11,266 $1,329 0.73 $18,958 $17,089 $14,290 1.47 1.68 2.15

10 9 + Increase Indoor Coil Face Area to 7.50 sq.ft. 13.51 8 .63 $1,033.92 $17.84 $1171.83 $31.47 $4243.03 4292 11,137 $1,308 0.87 $18,783 $16,944 $14,190 1.73 1.97 2.52

11 10+ Outdoor Coil Grooved Tube 13.71 8.66 $1,048.28 $14.36 $1171.83 $31.47 $4285.25 4229 11,102 $1,299 0.97 $18,733 $16,906 $14,169 1.90 2.17 2.78

12 11 + Increase Outdoor Coil Face Area to 27.30 sq 14.17 8.89 $1,106.40 $58.12 $1224.17 $31.47 $4508.46 4093 10,807 $1,263 1.47 $18,550 $16,774 $14,114 2.92 3.35 4.27

13 12+ Electronic Expansion Valve 14.37 8.94 $1,154.74 $48.34 $1224.17 $40.45 $4659.56 4036 10,747 $1,253 1.82 $18,591 $16,829 $14,190 3.60 4.12 5.26

14 13 + Outdoor ECM Fan Motor 14.44 9.05 $1,227.44 $72.70 $1224.17 $48.06 $4880.91 4014 10,616 $1,240 2.31 $18,668 $16,925 $14,313 4.67 5.35 6.83

15 14 + Increase Outdoor Coil Fate Area to 36.50 sq 14.63 9.13 $1,295.30 $67.86 $1285.90 $48.06 $5142.15 3963 10,527 $1,228 2.88 $18,797 $17,070 $14,484 5.82 6.67 8.51

16 15+ Indoor ECM Fan Motor 15.35 9.22 $1,475.55 $180.25 $1285.90 $63.68 $5687.71 3778 10,419 $1,203 3.97 $19,066 $17,374 $14,840 7.72 8.84 11.28

17 16+Two-SpeedRe ip-Compressor Systen 16.98 9.23 $1,664.30 $188 .75 $1285.90 $80.83 $6259.78 3415 10,409 $1,172 4.92 $19,287 $17,639 $15,171 8.70 9.96 12.72

18 16+Variab1e-SpeedRecip•Compressor System 17.16 9.78 $2,075.55 $600.00 $1285.90 $133.11 $7521.14 3378 9,831 $1,120 6.85 $19,969 $18,394 $16,037 13.26 15.18 19.38

19 16+Two-Speed Scroll-Compressor System 17.30 10.02 $1,975.55 $500.00 $1285.90 $128.74 $7222.77 3352 9,586 $1,097 6.01 $19,415 $17,873 $15,564 12.02 13.76 17.57

20 Variable Speod Scroll-Cam renor System 19.16 10.31 $2,125.55 $650.00 $1285.90 $135.29 $7670.32 3026 9,322 $1,047 6.26 $19,306 $17,835 $15,631 12.06 13.80 17.62

Awumgtionse

1 Electricity cost - 0. 085 S/kWh (avenge cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in D OE'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 hose 1991 to 1992 . The electricity price mduse factor for CAC is 1.0 (no adjustment).

2 Lifetime - 15 years. Markup factor - 2.94.

3 Baseline unit includes:

Indoor Coil: 6.00 sq fL, 13 fins/utch, Wavy Fins, 4 tube rows, Groove Tubes

Outdoor Coil : 195 sq.fl., 20 fins/mdr, Slit Fine, 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 Thmnostatic 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 Condense ECM Fan Motor is run at a single speed.

EE-RM-93-801 COMMENT 0CC

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

Ina. Insullcd Annual Elee Usc Annual Cumul. Lifecycle COIIII 

SEER HSPF Manufr Manufr Installation Maintenance Consumer Cooling Heating Energy Payback 

Lovel Design Option Cost Cost Cost Cost Cost cost Period (1992$) 

Btuh/W Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) kWblyr kWblyr (1992$) (yean) 4% 6% 

0 Baseline 10.00 1.09 $934.00 - $1161.54 $46.69 $3954.19 5198 13,556 $1.640 NA $22.193 $19.886 

1 o + Backward Inclined Indoor Blower 10.30 1.21 $934.03 $0.03 $1161.54 $46.69 $3954.28 5629 13,328 $1.601 0.00 $21.820 $19,560 

2 1 + Indoor Coil Slit Fins 10.38 1.21 $934.25 $0.22 $1161.54 $46.69 $3954.93 5584 13.211 $1,593 0.02 $21.667 $19,421 

3 2 + Tune Delay Relay 10.68 7.40 $940.15 $6.50 $1161.54 $46.69 $3974.04 5429 12.981 $1,560 0.25 $21,323 $19.129 

4 3 + Scroll Compressor: 11.30 HER 12.30 7.80 $965.13 $24.38 $1161.54 $46.69 $4045.71 4715 12,320 $1.444 0.47 $20.100 $18.069 

5 4 + More Efficient Outdoor PSC Pan Motor (65.0% 12.42 7.89 $971.43 $6.30 $1161.54 $39.08 $4056.62 4666 12.176 $1,428 0.48 $19.929 $17.922 

6 5 + Increase Indoor Coil Fin Density 10 14 fpi 12.46 1.93 $973.16 $1.13 $1161.54 $39.08 $4061.71 4653 12.117 $1,421 0.49 $19.865 $17.866 

7 6 + More Efficient Indoor PSC Pan Motor (68.5%) 12.81 8.04 $982.92 $9.16 $1161.54 $31.47 $4082.80 4525 11.946 $1,396 0.53 519.605 $17.642 

8 7 + Demand DefroIt 12.81 8.29 $994.42 $11.50 $1161.54 $31.47 $4116.61 4525 11.598 $1,361 0.59 519,311 $17,389 

9 8 + Non-Bleed Thenno&tatic Expanaion Valves 13.13 8.53 $1.016.08 $21.66 $1161.54 $31.47 $4180.29 4415 11.266 $1,329 0.73 S18.958 $17.089 

10 9 + Increase Indoor Coil Paco Area 10 7.s0 sq.ft.. 13.51 8.63 $1.033.92 $17.84 $1171.83 $31.47 $4243.03 4292 11.137 $1,308 0.87 S18.783 $16.944 

11 10+ Outdoor Coil Grooved Tubca 13.71 8.66 $1,048.28 $14.36 $1171.83 $31.47 $4285.25 4229 11,102 $1.299 0.97 S18.733 $16,906 

12 11 + Increase Outdoor Coil Paco Area 10 27.30 sq.f\.. 14.17 8.89 $1,106.40 $58.12 $1224.17 $31.47 $4508.46 4093 10.807 $1,263 1.47 $18,550 $16,774 

13 12 + Electronic Expanaion Valve 14.37 8.94 $1,154.74 $48.34 $1224.17 $40.45 $4659.56 4036 10,747 $1,253 1.82 $18,591 $16,829 

14 13 + Outdoor ECM Fan Motor 14.44 9.05 $1,227.44 $72.70 $1224.17 $48.06 $4880.91 4014 10.616 $1,240 2.31 $18.668 $16.925 

15 14 + Increase Outdoor Coil Faco Area 10 36.50 sq.f\.. 14.63 9.13 $1.295.30 $67.86 $1285.90 $48.06 $5142.15 3963 10,527 $1,228 2.88 $18,797 $17,070 

16 15 + Indoor ECM Pan Motor 15.35 9.22 $1,475.55 $180.25 $1285.90 $63.68 $5687.71 3778 10.419 $1,203 3.97 519,066 $17,374 

17 16 + Two-Speed Rccip-Ccmpresaor System 16.98 9.23 $1.664.30 $188.75 $1285.90 $80.83 $6259.78 3415 10.409 $1,172 4.92 S19.287 $17.639 

18 16 + V triable-Speed Recip-Comprellor System 17.16 9.78 $2,075.55 $600.00 $1285.90 $133.11 $7521.14 3378 9.831 $1,120 6.85 $19,969 $18,394 

19 16 + Two-Speed Scroll-Compreasar System 17.30 10.02 $1,975.55 $500.00 $1285.90 $128.74 $7222.77 3352 9,586 $1,091 6.01 $19,415 $17,873 

20 16 + V triable-Speed Scroll-Ccmpreuor System 19.16 10.31 $2,125.55 $650.00 $1285.90 $135.29 $7670.32 3026 9,322 $1.047 6.26 $19,306 $17,835 

AssumptiO!ll; 

1 Electricity cost • 0.085 $IkWh (average cost in i 999 obtained from an interpolation of the 1995 and 2000 prices of elect:icity forecast in DOE's Annual Energy Outlook 1993, inflated 

10 1992 dollan). The interpolated value for 1999 is 0.082 $!kWh (1991 $) or 0.085 after adjusting for inflation from 199110 1992. The electricity price endusc factor for CAC is 1.0 (no adjustment). 

2 Lifetime. 15 years. Marltup factor. 2.94. 

3 Baseline unit includea; 

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

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

Canpreasor. Reciprocating, 10.49 HER (ncminal); Accumulator 

Indoor Fan Motor; PSC. 58.5% efficient 

Outdoor Fan Motor. PSC. 55.0% efficient 

Enhancement Devical; None 

4 Maximum Scmib1e Heat Ratio - 76.5% 

5 Non· Bleed Thermostatic Expansion Valves replace the need for a Time Delay Rclay; Accumulator still required due 10 excess refrigerant. 

6 Evaporator ECM Fm Motor iJ modulated. Cost of fan motor includes electronic modulating controls. 

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

10% 

$16,431 

$16.116 

$16.072 

$15.842 

$15.028 

$14.915 

$14.873 

$14.702 

$14.511 

$14.290 

$14,190 

$14.169 

$14.114 

$14.190 

$14.313 

$14.484 

$14.840 

S15,171 

$16,037 

$15,564 

$15,631 

9/29/93 

Cumulative 

Cost of ConsetVed Energy 

(centsAc Wh) 

4% 6% 10% 

NA NA NA 

0.00 0.01 0.01 

0.03 0.04 0.05 

0.48 0.55 0.11 

0.76 0.87 1.11 

0.81 0.93 1.19 

0.84 0.97 1.23 

0.91 1.04 1.33 

1.15 1.31 1.68 

1.47 1.68 2.15 

1.73 1.97 2.52 

1.90 2.17 2.78 

2.92 3.35 4.27 

3.60 4.12 5.26 

4.67 5.35 6.83 

5.82 6.67 8.51 

7.72 8.84 11.28 

8.70 9.96 12.72 

13.26 15.18 19.38 

12.02 13.76 17.57 

12.06 13.80 17.62 
9/29/93

Life Cycle Cost for 5-ton Split System

Central Heat Pump

N $18,500

U T$18,000

6% discount rate

20

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 0CC

$20,000 0 

$19,500 

$19,000 

~ $18,500 

0'\ 

0'\ 

,...j 

'-' 

u :s $18,000 

$17,500 

$17,000 

$16,500 

9.0 10.0 11.0 

9/29/93 

Life Cycle Cost for 5-ton Split System 

Central Heat Pump 

----- 6% discount rate I 

18 

7 

8 

10 

12 

12.0 13.0 14.0 15.0 16.0 17.0 

SEER 

18.0 19.0 20.0 
9/29/93

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 +

4% discount rate

- - - - 6% discount rate

®- - - - 10% discount rate

A

$13,500 1 i i i i i i i i i 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

SEER

EE-RM-93-801 COMMENT 0CC

$22,500 

$21,500 

$20,500 

$19,500 

.-

~ $18,500 ~ 

~ 

'-" 

U u $17,500 

,.,..J ., 

$16,500 + 

$15,500 

$14,500 

$13,500 

9.0 10.0 11.0 

9/29/93 

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 

- - iJ. - - 6% discount rate 

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

• - - -+ 

17.0 18.0 19.0 20.0 
9/28/93

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

Level Design Option

SEER Manufr

Cost

Incr.

Manufr

cost

Installed

Installation MaintenanceConsum

cost cost Cost

Annual

Elec.

use

Annual

Energy

cost

Cumul.

Payback

Period

Lifecycle Costs

(1992$)

Cumulative

Cost of Conserved Energy

(cents/kWh)

Btuh1W (1992$) (1992$) (1992$) 1992$ 1992$) kWb/ (1992$) (years) 4% 6% 10% 4% 6% 10%

0 Baseline 9.70 $474.00 - $1968.37 $46.69 $2953.58 3533 $299 NA $6,283 $5,862 $5,231 NA NA NA

1 0+ Backward Inclined Indoor Blower 9.97 $474.04 $0.04 $1968.37 $46.69 $2953.66 3440 $292 0.01 $6,196 $5,786 $5,172 0.01 0.01 0.01

2 1 + Evaporator Slit Fins 10.09 $474.13 $0.09 $1968.37 $46.69 $2953.84 3399 $288 0.02 $6,157 $5,752 $5,145 0.02 0.02 0.03

3 2 + Reciprocating Compressor: 10.91 EER 11 .00 $481.51 $7.38 $1968.37 $46.69 $2968.45 3118 $264 0.42 $5,907 $5,535 $4,979 0.32 0.37 0.47

4 3 + More Efficient Condenser PSC Fan Motor (65.0%) 11.12 $486.46 $4.95 $1968.37 $39.08 $2970.64 3083 $261 0.45 $5,876 $5,508 $4,958 0.34 0.39 0.50

5 4 + More Efficient Evaporator PSC Fan Motor (68.5% 11,38 $493.68 $7.22 $1968.37 $31.47 $2977.33 3013 $255 0.54 $5,816 $5,457 $4,919 0.41 0.47 0.60

6 5 + Time Delay Relay 11 .81 $500.18 $6.50 $1968.37 $31.47 $2990.20 2902 $246 0.68 $5,725 $5,380 $4,861 0.52 0.60 0.76

7 6+ Condenser Grooved Tubes 12.25 $506.13 $5.95 $1968.37 $31.47 $3001.98 2800 $237 0.78 $5,641 $5,307 $4,807 0.59 0.68 0.87

8 7 + Increase Evaporator Fin Density to 14 fpi 12.30 $506.88 $0.75 $1968.37 $31.47 $3003.46 2788 $236 0.79 $5,631 $5,298 $4,801 0.60 0.69 0.88

9 8 + Scroll Compressor. 11.50 EER / Non-Bleed TXV 13.11 $543.29 $36.41 $1968.37 $31.47 $3075.55 2616 $222 1.57 $5,541 $5,229 $4,762 1.20 1.37 1.75

10 9+ Increase Evaporator Face Area to 6.60 sq.ft. 13.97 $565.51 $22.22 $1985.35 $31.47 $3136.53 2455 $208 2.00 $5,450 $5,157 $4,719 1.53 1.75 2.23

11 10+ Increase Condenser Face Area to 18.03 sq.ft. 14.74 $586.24 $20.73 $2019.91 $31.47 $3212.14 2327 $197 2.53 $5,405 $5,128 $4,712 1.93 2.21 2.82

12 11 + Increase Evaporator Face Area to 7.50 sq.ft. 14.91 $594.35 $8.11 $2026.08 $31.47 $3234.36 2299 $195 2.68 $5,401 $5,127 $4,717 2.05 2.34 2.99

13 12+ Increase Condenser Face Area to 28.33 sq.ft. 15.35 $635.95 $41.60 $2095.19 $31.47 $3385.84 2234 $189 3.93 $5,492 $5,225 $4,826 2.99 3.43 4.38

14 13 + Evaporator ECM Fan Motor 15.91 $777.26 $141.31 $2095.19 $47.09 $3681.25 2155 $183 6.23 $5,712 $5,456 $5,071 4.75 5.44 6.94

15 14+ Electronic Expansion Valve 16.10 $853.43 $76.17 $2095.19 $56.07 $3841.05 2129 $180 7.46 $5,848 $5,594 $5,214 5.69 6.51 8.31

16 15 + Condenser ECM Fan Motor 16.25 $919.98 $66.55 $2095.19 $63.68 $3980.43 2109 $179 8.51 $5,968 $5,717 $5,340 6.49 7.43 9.48

17 16 + Two-Speed Recip-Compressor System 17.66 $1,100.67 $180.69 $2095.19 $76.66 $4351.18 1942 $165 10.36 $6,181 $5,950 $5,603 7.90 9.04 11.54

18 16 + Variable-Speed Recip-Compressor System 18.03 $1,511.92 $591.94 $2095.19 $120.59 $5209.38 1902 $161 16.31 $7,002 $6,775 $6,436 12.44 14.24 18.18

19 16+Two-Speed Scroll-Compressor System 18.35 $1,411.92 $491.94 $2095.19 $116.22 $5007.01 1869 $158 14.56 $6,768 $6,546 $6,212 11.10 12.70 16.22

20 16+ Variablo-Speed Scroll-Coen sor System 20.55 $1,561.92 $641.94 $2095.19 $122.78 $5310.57 1668 $141 14.91 $6,883 $6,684 $6,386 11.37 13.01 16.62

Assumption::

t Electricity cat = 0.085 3AWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOEs 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. Markup factor =1.98.

3 Baseline unit includes:

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

Condenser: 12.88 sq.lt., 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 a-an at a single speed.

EE-RM-93-801 COMMENT 0CC

9/28/93 

Life Cycle Costs and Payback Periods of J·lon, Single Package System Central Air Conditioner 

Incr. Installed Annual Annual Cumul. Ufecycle Costs Cumulative 

SEER Manul'r Manufr Installation Maintenance COllSWllel Elee. Energy Payback C~ofCo~ed~ 

Leve Design Option Cost Cost C~ Cost Cost use cost Period (1992$) (cents/kWh) 

Btub,IW (1992$) (1992$) (1992$) (1992$) (1992$) kWh/yr (1992$) (years) 4% 6% 10% 4% 6% 10% 

0 Baseline 9.70 $474.00 - $1968.37 $46.69 $2953.58 3533 $299 NA $6,283 $5,862 $5,231 NA NA NA 

1 o + BackwlJd 1Dc1lned Indoor Blower 9.97 $474.04 $0.04 $1968.37 $46.69 $2953.66 3440 $292 0.01 $6,196 $5,786 $5,172 0.01 0,01 0.01 

2 1 + Evaporator Slit Fins 10.09 $474.13 $0.09 $1968.37 $46.69 $2953.84 3399 $288 0.02 $6,157 $5,752 $5,145 0,02 0.02 0.03 

3 2+ Reciprocating Compressor: 10.91 EER 11.00 $481.51 $7.38 $1968.37 $46.69 $2968.45 3118 $264 0.42 $5,907 $5,535 $4,979 0.32 0.37 0.47 

4 3 + More Efficient Condenser PSC Fan Motor (65.0%) 11.12 $486.46 $4.95 $1968.37 $39.08 $2970.64 3083 $261 0.45 $5,876 $5,508 $4,958 0.34 0.39 O.SO 

5 4 + More Efficient Evaporator PSC Fan Motor (68.5% 11.38 $493.68 $7.22 $1968.37 $31.47 $2977.33 3013 $255 0.54 $5,816 $5,457 $4,919 0.41 0.47 0.60 

6 5 + Time Delay Relay 11.81 $500.18 $6.50 $1968.37 $31.47 $2990.20 2902 $246 0.68 $5,725 $5,380 $4,861 0.52 0.60 0.76 

7 6 + Condenser Grooved TubeI 12.25 $506.13 $5.95 $1968.37 $31.47 $3001.98 2800 $237 0.78 $5,641 $5,307 $4,807 0.59 0.68 0.87 

8 7 + Increase Evaporator fin Density to 14 !pI 12.30 $506.88 $0.75 $1968.37 $31.47 $3003.46 2788 $236 0.79 $5,631 $5,298 $4,801 0.60 0.69 0.88 

9 8+ ScroD Compressor: l1.50EER/Non-Bleed TXV 13.11 $543.29 $36.41 $1968.37 $31.47 $3075.55 2616 $222 1.57 $5,541 $5,229 $4,762 1.20 1.37 1.75 

10 9 + Increase Evaporator Face Area to 6.60 sq.ft. 13.97 $565.51 $22.22 $1985.35 $31.47 $3136.53 2455 $208 2.00 $5,450 $5,157 $4,719 1.53 1.75 2.23 

11 10 + Increase Condenser Face Area to 18.03 sq.ft. 14.74 $586.24 $20.73 $2019.91 $31.47 $3212.14 2327 $197 2.53 $5,405 $5,128 $4,712 1.93 2.21 2.82 

12 11 + Increase Evaporator Face Area to 7.SO sq.ft. 14.91 $594.35 $8.11 $2026.08 $31.47 $3234.36 2299 $195 2.68 $5,401 $5,127 $4,717 2.05 2.34 2.99 

13 12 + Increase Condenser Face Area to 28.33 sq.ft. 15.35 $635.95 $41.60 $2095.19 $31.47 $3385.84 2234 $189 3.93 $5,492 $5,225 $4,826 2.99 3.43 4.38 

14 13 + Evaporator ECM Fan Motor 15.91 $777.26 $141.31 $2095.19 $47.09 $3681.25 2155 $183 6.23 $5,712 $5,456 $5,071 4.75 5.44 6.94 

15 14 + Eleclronlc Expansion Valve 16.10 $853.43 $76.17 $2095.19 $56.07 $3841.05 2129 $180 7.46 $5,848 $5,594 $5,214 5.69 6.51 8.31 

16 15 + Condenser ECM Fan Motor 16.25 $919.98 $66.55 $2095.19 $63.68 $3980.43 2109 $179 8.51 $5,968 $5,717 $5,340 6.49 7.43 9.48 

17 16 + Two-Speed Recip-COIIlJlR'IOI' Systall 17.66 $1,100.67 $180.69 $2095.19 $76.66 $4351.18 1942 $165 10.36 $6,181 $5,950 $5,603 7.90 9.04 11.54 

18 16 + Variable-Speed Reci~Compressor System 18.03 $1,511.92 $591.94 $2095.19 $120.59 $5209.38 1902 $161 16.31 $7,002 $6,TI5 $6,436 12.44 14.24 18.18 

19 16 + Two-Speed ScroD-CompreslOl' System 18.35 $1,411.92 $491.94 $2095.19 $116.22 $5007.01 1869 $158 14.56 $6,768 $6,546 $6,212 11.10 12.70 16.22 

20 16 + Variable-Speed Scroll-Compressor System 20.55 $1,561.92 $641.94 $2095.19 $122.78 $5310.57 1668 $141 14.91 $6,883 $6,684 $6,386 11.37 13.01 16.62 

AlIsumptiqos· 

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

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

2 Ufetime = 15 yean. Markup factor = 1. 98. 

3 Baseline unit Includes: 

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

Condenser: 12.88 sq.ft., 20 fms/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 i,; ,1IIl at a single speed. 
9/28/93

Life Cycle Cost for 3-ton Single Package System

Central Air Conditioner

$7,000 -r

$6,600 +

$5,400 -}-

6% discount rate

$5,000 I i i i i i i i i i i

12

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 0CC

$7,000 

9/28/93 

Life Cycle Cost for 3-ton Single Package System 

Central Air Conditioner 

$6,600 1-0- 6% discount rate I 

_ $6,200 

~ 

'" '" ...... 

'-' 

u 0 

U 

....J $5,800 

$5,400 

$5,000 

9.0 

3 

5 

10.0 11.0 

6 

12.0 13.0 14.0 

11 13 

12 

15.0 

SEER 

16.0 17.0 18.0 

20 

19.0 20.0 21.0 
9/28/93

a

$7,000 -r-

$6,600 - -

$6,200 - -

$5,400 --

$5,000 I

Life Cycle Cost for 3-ton Single Package System

Central Air Conditioner

4% discount rate

- - - - 6% discount rate

®- - - - 10% discount rate

Iz

$4,600 -1 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

SEER

EE-RM-93-801 COMMENT 0CC

-. 

V7 

N 

$7,000 

$6,600 

$6,200 

~ 

e $5,800 

u 

u 

~ 

$5,400 

$5,000 

$4,600 

9.0 10.0 11.0 

9/28/93 

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 
9/30/93

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

Level Design Option

SEER Manufr

Cost

Incr.

Manufr

Cost

Installed

Installation Maintenance Consumer

Cost Cost cost

Annual

Elec.

use

Annual

Energy

cost

Cunatl.

Payback

Period

Lifecycle Costs

(1992$)

Cumulative

Cost of Conserved Energy

(cents/kWh)

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

0 Baseline 9.71 $666.00 - $2221.22 $46.69 $3773.07 5962 $505 NA $9,391 $8,681 $7,616 NA NA NA

1 0 + Backward Inclined Indoor Blower 9.98 $666.02 $0.02 $2221.22 $46.69 $3773.12 5799 $492 0.00 $9,238 $8,547 $7,512 0.00 0.00 0.00

2 1 + Evaporator Slit Fins 10.07 $666.23 $0.21 $2221.22 $46.69 $3773.59 5748 $487 0.03 $9,191 $8,506 $7,480 0.02 0.03 0.03

3 2 + Scroll Compressor: 11.30 EER 11.52 $690.87 $24.64 $2221.22 $46.69 $3829.28 5022 $426 0.71 $8,562 $7,963 $7,067 0.54 0.62 0.79

4 3 + Time Delay Relay 11 .97 $697.37 $6.50 $2221.22 $46.69 $3843.97 4834 $410 0.74 $8,399 $7,823 $6,960 0.57 0.65 0.83

5 4 + More Efficient EvVerator PSC Pan Motor (68.5% 12.27 $707.14 $9.77 $2221.22 $39.08 $3858.44 4714 $400 0.81 $8,301 $7,739 $6,898 0.62 0.70 0.90

6 5 + Non-Bleed Thermostatic Expansion Valve 12.58 $714.72 $7.58 $2221.22 $39.08 $3875.57 4599 $390 0.89 $8,210 $7,662 $6,841 0.68 0.77 0.99

7 6 + More Efficient Condenser PSC Fan Motor (65.0%) 12.70 $721.02 $6.30 $2221.22 $31.47 $3882.20 4557 $386 0.92 $8,177 $7,634 $6,820 0.70 0.80 1.02

8 7 + Increase Evaporator Fin Density to 14 fpi 12.74 $722.48 $1.46 $2221.22 $31.47 $3885.49 4542 $385 0.93 $8,165 $7,624 $6,813 0.71 0.82 1.04

9 8 + Increase Evaporator Face Area to 7.50 sq.R 13.13 $739.70 $17.22 $2231.51 $31.47 $3934.70 4408 $374 1.23 $8,089 $7,563 $6,776 0.94 1.07 1.37

10 9 + Condenser Grooved Tubes 13.28 $756.52 $16.82 $2231.51 $31.47 $3972.72 4356 $369 1.47 $8,078 $7,559 $6,781 1.12 1.28 1.64

11 10 + Increase Condenser Face Area to 27.60 sq.ft. 13.53 $788.74 $32.22 $2262.38 $31.47 $4076.40 4277 $362 2.12 $8,107 $7,597 $6,833 1.62 1.85 2.37

12 11 + Increase Condenser Facc Area to 36.50 sq.ft. 13.79 $850.40 $61.66 $2322.10 $31.47 $4275.47 4195 $356 3.36 $8,229 $7,729 $6,980 2.56 2.93 3.74

13 12 + Evaporator ECM Fan Motor 14.40 $1,030.66 $180.26 $2322.10 $47.09 $4698.48 4019 $341 5.62 $8,486 $8,007 $7,290 4.29 4.91 6.26

14 13+ Electronic Expansion Valve 14.59 $1,106.83 $76.17 $2322.10 $56.07 $4879.61 3966 $336 6.54 $8,617 $8,144 $7,436 4.99 5.71 7.29

15 14 + Condenser ECM Fan Motor 14.66 $1,179.53 $72.70 $2322.10 $63.68 $5051.52 3947 $335 7.49 $8,771 $8,301 $7,596 5.71 6.53 8.34

16 15 + Two-Speed Recip-Compressor System 16.27 $1,368.28 $188.75 $2322.10 $80.54 $5494.95 3557 $302 8.45 $8,847 $8,423 $7,788 6.44 7.37 9.42

17 15 + Variable-Speed Recip-Compressor System 17.14 $1,779.53 $600.00 $2322.10 $132.24 $6476.08 3376 $286 12.33 $9,657 $9,255 $8,652 9.40 10.76 13.74

18 15 + Two-Speed Scroll-Compressor System 16.52 $1,679.53 $500.00 $2322.10 $127.87 $6245.71 3504 $297 11.87 $9,548 $9,130 $8,504 9.05 10.36 13.23

19 15+Variable-Speed Scroll-Compressor stem 19.04 $1,829.53 $650.00 $2322.10 $134.43 $6591.27 3039 $258 11.38 $9,455 $9,093 $8,550 8.67 9.93 12.68

AsawMajonse

I Electricity cost = 0.085 $/kWh (average cost in 1999 obtained from an interpolation of the 1995 and 2000 prices of electricity forecast in DOEs 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. Markup factor = 2.26.

3 Baseline unit includes:

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

Condenser: 23.00 sq.ft., 20 finshnch, Slit Fins, 2 tube rows, Smooth Tubes

Compressor. Reciprocating, 10.49 ERR (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 fart motor includes electronic modulating controls.

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

EE-RM-93-801 COMMENT 0CC

9/30/93 

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

Incr. Installed Annual Annual Cornu!. Lifecycle Costs Cumulative 

SEER Manufr Manufr Installation Maintenance Consumer E1ec. Energy Payback Cost of Conserved Energy 

Leve Design Option Cost Cost Cost Cost Cost use cost Period (1992$) (cents/kWh) 

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

0 Baseline 9.71 $666.00 - $2221.22 $46.69 $3773.07 5962 $505 NA $9.391 $8.681 $7.616 NA NA NA 

1 o + Backward Inclined Indoor Blower 9.98 $666.02 $0.02 $2221.22 $46.69 $3773.12 5799 $492 0.00 $9.238 $8.547 $7.512 0.00 0.00 0.00 

2 1 + Evaporator Slit Fins 10.07 $666.23 $0.21 $2221.22 $46.69 $3773.59 5748 $487 0.03 $9.191 $8.506 $7.480 0.02 0.03 0.03 

3 2 + ScrolJ COIJ¥eSsor: 11.30 EER 11.52 $690.87 $24.64 $2221.22 $46.69 $3829.28 5022 $426 0.71 $8.562 $7.963 $7.067 0.54 0.62 0.79 

4 3 + Time Delay Relay 11.97 $697.37 $6.50 $2221.22 $46.69 $3843.97 4834 $410 0.74 $8.399 $7.823 $6.960 0.57 0.65 0.83 

5 4 + More Efficient Evaporator PSC Fau Motor (68.5% 12.27 $707.14 $9.77 $2221.22 $39.08 $3858.44 4714 $400 0.81 $8.301 $7.739 $6.898 0.62 0.70 0.90 

6 5 + Non-Bleed Thermostatic Expansion Valve 12.58 $714.72 $7.58 $2221.22 $39.08 $3875.57 4599 $390 0.89 $8.210 $7.662 $6.841 0.68 0.77 0.99 

7 6 + More Efficient Condenser PSC Fan Motor (65.0%) 12.70 $721.02 $6.30 $2221.22 $31.47 $3882.20 4557 $386 0.92 $8.177 $7.634 $6.820 0.70 0.80 1.02 

8 7 + Incteue Evaporator F"m Density to 14 fpi 12.74 $722.48 $1.46 $2221.22 $31.47 $3885.49 4542 $385 0.93 $8.165 $7.624 $6.813 0.71 0.82 1.04 

9 8 + Incteue Evaporator Face Area to 7.50 sq.f\. 13.13 $739.70 $17.22 $2231.51 $31.47 $3934.70 4408 $374 1.23 $8.089 $7.563 $6.776 0.94 1.07 1.37 

10 9 + Condenser Grooved Thbes 13.28 $756.52 $16.82 $2231.51 $31.47 $3972.72 4356 $369 1.47 $8,078 $7.559 $6,781 1.12 1.28 1.64 

11 10 + Incteue Condenser Face Area to 27.60 sq.ft. 13.53 $788.74 $32.22 $2262.38 $31.47 $4076.40 4277 $362 2.12 $8,107 $7,597 $6,833 1.62 1.85 2.37 

12 11 + Increase Condenser Face Area to 36.50 sq.ft. 13.79 $850.40 $61.66 $2322.10 $31.47 $4275.47 4195 $356 3.36 $8,229 $7.729 $6,980 2.56 2.93 3.74 

13 12 + Evaporator ECM Fan Motor 14.40 $1,030.66 $180.26 $2322.10 $47.09 $4698.48 4019 $341 5.62 $8,486 $8,007 $7,290 4.29 4.91 6.26 

14 13 + Electronic Expansion Valve 14.59 $1,106.83 $76.17 $2322.10 $56.07 $4879.61 3966 $336 6.54 $8,617 $8,144 $7,436 4.99 5.71 7.29 

15 14 + Condenser ECM Fan Motor 14.66 $1,179.53 $72.70 $2322.10 $63.68 $5051.52 3947 $335 7.49 $8,771 $8,301 $7,596 5.71 6.53 8.34 

16 15 + Two-Speed Recip-Compressor System 16.27 $1,368.28 $188.75 $2322.10 $80.54 $5494.95 3557 $302 8.45 $8,847 $8,423 $7,788 6.44 7.37 9.42 

17 15 + Variable-Speed Recip-COIJ¥eSsor System 17.14 $1,779.53 $600.00 $2322.10 $132.24 $6476.08 3376 $286 12.33 $9,657 $9,255 $8,652 9.40 10.76 13.74 

18 15 + Two-Speed ScrolJ-Compressor System 16.52 $1,679.53 $500.00 $2322.10 $127.87 $6245.71 3504 $297 11.87 $9,548 $9,130 $8,504 9.05 10.36 13.23 

19 15 + Variable-Speed ScroD-Compressor System 19.04 $1,829.53 $650.00 $2322.10 $134.43 $6591.27 3039 $258 11.38 $9,455 $9,093 $8,550 8.67 9.93 12.68 

Assumptions: 

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

to 1992 dollan). 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. Markup factor = 2.26. 

3 Baseline unit includes: 

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

Condenser: 23.00 sqA, 20 fins/inch, Slit Fins, 2 tube rows, Smooth Thbes 

Compressor; ReciprocIting, 10.49 EER (nominal); Accumulator 

Evaporator Fan Motor. PSC, 58.5% efficient 

Condenser Fan Motor. PSC, 55.0% efficient 

Fnhancernent 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. 
9/30/93

Life Cycle Cost for 5-ton Single Package System

Central Air Conditioner

$9,400

19

$8,900

$7,900

6% discount rate

$7,400

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 0CC

9/30/93 

Life Cycle Cost for 5-ton Single Package System 

Central Air Conditioner 
9/30/93

Life Cycle Cost for 5 -ton Single Package System

Central Air Conditioner

$9,700 ---

$9,200 - -

$8,700 -^

$7,700 -}-

$7,200 --

$6,700

9.0

4% discount rate

- - - - 6% discount rate

- ♦ - - - - 10% discount rate

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 0CC

$9,700 

$9,200 

$8,700 

,-.. 

fFt 

N 

<:::'I 

<:::'I 

e $8,200 

u 

U 

~ 

$7,700 

$7,200 

$6,700 

9.0 10.0 

9/30/93 

Life Cycle Cost for 5·ton Single Package System 

Central Air Conditioner 

--0- 4% discount rate 

- - fI - - 6% discount rate 

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

, 

+ 

" " " 

, , , , 

, ' , ' , ' ,,' 

I, ..... 

.. ,... , - ,',:',"" ' ' ' 

I 

, • 

, , , , 

11.0 12.0 13.0 14.0 15.0 16.0 

SEER 

17.0 

.+ 

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

9/28/93

Incr. Installed Annual Eloc Use Annual Cumul. Ufecycle Costs Qunulative

SEER HSPF Manufr Manuf r Installation Maintenance consumer Cooling Heating Energy Payback Cost of Conserved Energy

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

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

0 Baseline 9.70 6.69 $677.00 $1202,35 $46,69 $2691.05 3764 8,379 $1,029 NA $14,134 $12,687 $10,519 NA NA NA

1 0+ Backward Inclined Indoor Blower 9.99 6.79 $677.00 $0.00 $1202.35 $46.69 $2691 .05 3654 8,254 $1,009 0.00 $13,913 $12,494 $10,368 0.00 0.00 0.00

2 1+Indoor Coil Slit Firs 10.12 6.90 $677.03 $0.03 $1202.35 $46.69 $2691.12 3608 8,128 $995 0.00 $13,751 $12,352 $10,257 0.00 0.00 0.01

3 2 + Increase Indoor Coil Fin Density to 14 fpi 10. 16 6.92 $677.69 $0.66 $1202.35 $46.69 $2692.52 3594 8,096 $991 0.04 $13,709 $12,316 $10,229 0.08 0.09 0.11

4 3 + More Efficient Indoor PSC Fan Motor (68.5%) 10.40 7.01 $684.89 $7.20 $1202.35 $39.08 $2700.25 3512 7,995 $975 0.17 $13,544 $12,172 $10,118 0.33 0.37 0.48

5 4 + More Efficient Outdoor PSC Fan Motor (65.096) 10.51 7.10 $691.19 $6.30 $120235 $31.47 $2706.06 3476 7,890 $963 0.23 $13,417 $12,063 $10,034 0.47 0.54 0.68

6 5+ Time Delay Relay 10.84 7.25 $697.69 $6.50 $1202.35 $31.47 $2719. 90 3369 7,734 $941 0.33 $13,183 $11,860 $9,878 0.66 0.75 0.96

7 6+ Reciprocating Compressor 11.26EER 11.34 7.46 $708.68 $10.99 $1202.35 $31.47 $2743.31 3221 7,516 $910 0.44 $12,862 $11,583 $9,666 0.87 0.99 1.27

8 7 + Increase Indoor Coil Face Area to 4.97 sq.ft. 12.04 7.73 $722.05 $13.37 $1212.09 $31.47 $2781.53 3032 7,250 $872 0.57 $12,472 $11,246 $9,411 1.11 1.27 1.63

9 8+Demand Def:ost 12.04 7.96 $733.55 $11.50 $1212.09 $31.47 $2806.02 3032 7,039 $854 0.65 $12,297 $11,097 $9,299 1.41 1.62 2.07

10 9 + Outdoor Coil Grooved Tubes 12.34 8 .00 $740.52 $6.97 $1212.09 $31.47 $2820.87 2958 7,009 3845 0.70 $12,214 $11,026 $9,247 1.45 1.66 2.12

11 10 + Increase Indoor Coil Face Area to 6 . 39 sq.ft. 12.73 8.15 $755.60 $15.08 $1221.83 $31 .47 32862.73 2868 6,877 $826 0.84 $12,046 $10,885 $9,145 1.72 1.97 2.52

12 11+Scroll Cesnpressor: 11.50EER 13.29 8.25 $774.58 $18.98 $1221.83 $31.47 $2903.16 2748 6,791 $808 0.96 $11,892 $10,755 $9,053 1.88 2.15 2.74

13 12+ Non-Bleed Thermostatic Expansion Valves 13.62 8.47 $787.03 $12.45 $1221.83 $31.47 $2929.68 2681 6,616 $788 0.99 $11,691 $10,583 $8,923 1.98 2.27 2.90

14 13 + Increase Outdoor Coil Face Ara to 21 .00 sq.ft 14.34 8.80 $811.89 $24.86 $1262.09 $31 .47 $3022.89 2547 6,372 $756 1.21 $11,428 $10,365 $8,773 2.45 2.81 3.58

15 14 + Increase Indoor Coil Face Area to 7.50 sq.ft. 14.55 8.86 $822.19 $10.30 $1269.70 $31.47 $3052.44 2509 6,325 $749 1.29 $11,378 $10,325 $8,748 2.59 2.97 3.79

16 15 + Increase Indoor Coil Tube Density to 4 rows 14.66 8.93 3844.58 $22.39 $1269.70 $31.47 $3100.13 2490 6,276 $743 1.43 $11,362 $10,317 $8,752 2.89 3.31 4.22

17 16 + Increase Outdoor Coil Face Area to 30. 00 sq.ft 15.02 9.04 $890.19 $45.61 $1330.09 $31.47 $3257.67 2432 6,200 $732 1.90 $11,392 $10,363 $8,822 3.82 4.38 5.59

18 17 + Outdoor ECM Fan Motor 15.12 9.17 3962.89 $72.70 $1330.09 `$39.08 $3420.13 2415 6,115 $723 2.38 $11,459 $10,442 $8,919 4.86 5.57 7.11

19 18 + Electronic Expansion Valve 15.31 9.22 $1,011.23 $48.34 $1330.09 $48.06 $3532.07 2385 6,083 $718 2.70 $11,512 $10,502 $8,991 5.48 6.28 8.02

20 19 + Indoor ECM Fan Motor 15.87 9.28 $1,152.53 $141.30 $1330.09 $63.68 $3848.66 2300 6,042 $707 3.59 $11,710 $10,716 $9,227 7.11 8.14 10.40

21 20+Two-Speed Recip-ConpressorSystem 17.37 9.32 $1,332.79 $180.26 $1330.09 $77.62 $4246.55 2102 6,012 $688 4.56 $11,894 $10,927 $9,478 8.42 9.64 12.31

22 20+Variable-Speed Recip-Conpsasor System 17.70 9.72 $1,744.04 $591.51 $1330.09 $123.47 $5168.37 2063 5,770 $664 6.78 $12,550 $11,617 $10,218 13.10 15.00 19.15

23 20+Two-Speed Scroll-Compressor System 17.93 9.89 $1,644.04 $491.51 $1330.09- $119.10 $4951.00 2037 5,666 $653 6.00 312,210 $11,292 $9,917 11.77 13.47 17.20

24 Vaxiablc -Speed Scroll-Compressor S 20.21 10.69 $1,794.04 $641.51 $1330.09 $125.66 $5277.06 1806 5 ,243 $597 5.99 $11,920 $11,080 $9,822 11.88 13.60 17.37

AumzimL

1 Electricity cost- 0.085 $/kWh (avenge -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. Markup factor - 2.13.

3 Baseline unit includes:

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

Outdoor Coil: 15.00 aq.fL, 20 fins/rnch, 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 System 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 0CC

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

Inet. Installed Annual Elee Use Annual Cumul Lifeeycle COIItI 

SEER HSPF Manuf'r Manuf'r Installation Maintenance consumer Coolina Heating Energy Payback 

Leve DesignOptiClll Cost COIIt Cost Colt COlt cost Period (1992$) 

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

0 Iluclinc 9.70 6.69 $677.00 . $1202.35 $46.69 $2691.05 3764 8,379 $1,029 NA $14,134 $12,687 

1 0+ Backwani Inclined Indoor Blower 9.99 6.79 $677.00 $0.00 $1202.35 $46.69 $2691.05 3654 8,254 $1,009 0.00 $13,913 $12,494 

2 1 + Indoor Coil Slit FilII 10.12 6.90 $677.03 $0.03 $1202.35 $46.69 $2691.12 3608 8,128 $995 0.00 $13.751 $12,352 

3 2 + IncreaM Indoor Coil Fin Denaity to 14 fpi 10.16 6.92 $677.69 $0.66 $1202.35 $46.69 $2692.52 3594 8.096 $991 0.04 $13.709 $12,316 

4 3 + MOle Efficient Indoor PSC Fan Mota: (68.5%) 10.40 7.01 $684.89 $7.20 $1202.35 $39.08 $2700.25 3512 7.995 $975 0.17 $13,544 $12.172 

5 4 + MOle Efficient Outdoor PSC Fan Motor (65.0% 10.51 7.10 $691.19 $6.30 $1202.35 $31.47 $2706.06 3476 7,890 $963 0.23 $13.417 $12.063 

6 5 + Time Delay Relay 10.84 7.25 $697.69 $6.50 $1202.35 $31.47 $2719.90 3369 7.734 $941 0.33 S13.183 SI1,860 

7 6 + Reciprocating COIIlpteaor. 11.26 EER 11.34 7.46 $708.68 $10.99 $1202.35 $31.47 $2743.31 3221 7.516 $910 0.44 $12,862 $11,583 

8 7 + IncreaM Indoor Coil Face Area to 4.97 aq.ft. 12.04 7.73 $722.05 $13.37 $1212.09 $31.47 $2781.53 3032 7.250 $872 0.57 $12,472 $11,246 

9 8 + Demand Defrolt 12.04 7.96 $733.55 $11.50 $1212.09 $31.47 $2806.02 3032 7.039 $854 0.65 512,297 $11.097 

10 9 + Outdoor Coil Grooved Tubea 12.34 8.00 $740.52 $6.97 $1212.09 $31.47 $2820.87 2958 7.009 $845 0.70 $12.214 $11.026 

11 10+ Increlle Indoor Coil Face Area to 6.39 aq.ft. 12.73 U5 $755.60 $15.08 $1221.83 $31.47 $2862.73 2868 6,877 $826 0.84 $12,046 $10.885 

12 11 + Scroll COIIlptellOl': 11.50 EER 13.29 8.25 $774.58 $18.98 $1221.83 $31.47 $2903.16 2748 6.791 $808 0.96 SI1.892 $10.755 

13 12 + Non-Bleed ThermOltatic Expansion ValVCll 13.62 8.47 $787.03 $12.45 $1221.83 $31.47 $2929.68 2681 6,616 $788 0.99 $11,691 $10,583 

14 13 + IncreaM Outdoor Coil Face Area to 21.00 aq.ft 14.34 8.80 $811.89 $24.86 $1262.09 $31.47 $3022.89 2547 6,372 $756 1.21 $11,428 $10,365 

IS 14 + InCIelle Indoor Coil Face Area to 7.50 aq.ft. 14.55 8.86 $822.19 $10.30 $1269.70 $31.47 $3052.44 2509 6,325 $749 1.29 $11,378 $10,325 

16 15 + InCIelse Indoor Coil Tube Density to 4 rows 14.66 8.93 $844.58 $22.39 $1269.70 $31.47 $3100.13 2490 6,276 $743 1.43 Sl1,362 $10,317 

17 16 + InCIelse Outdoor Coil Face Area to 30.00 aq.ft 15.02 9.04 $890.19 $45.61 $1330.09 $31.47 $3257.67 2432 6,200 $732 1.90 511,392 510,363 

18 17 + Outdoor ECM Fan Motor 15.12 9.17 $962.89 $72.70 $1330.09 " $39.08 $3420.13 2415 6,115 $723 2.38 511,459 $10,442 

19 18 + Electronic Ex~ion Valve 15.31 9.22 $1.011.23 $48.34 $1330.09 $48.06 $3532.07 2385 6,083 $718 2.70 S11,512 $10,502 

20 19 + Indoor ECM Fan Mota: 15.87 9.28 $1,152.53 $141.30 $1330.09 $63.68 $3848.66 2300 6,042 $707 3.59 S11,710 $10,716 

21 20 + Two-Speed Recip-ComptellOl'System 17.37 9.32 $1,332.79 $180.26 $1330.09 $77.62 $4246.55 2102 6,012 $688 4.56 $11,894 $10,927 

22 20 + Variable-Speed Recip-CompieilOf Syltcm 17.70 9.72 $1,744.04 $591.51 $1330.09 $123.47 $5168.37 2063 5,770 $664 6.78 $12,550 $11,617 

23 20 + Two-Speed Scroll-Compn:ucr Syltcm 17.93 9.89 $1,644.04 $491.51 $1330.09· $119.10 $4951.00 2037 5,666 $653 6.00 $12,210 $11,292 

24 20 + V ari.ble-S~ Scroll-COIIlprcaor System 20.21 10.69 $1,794.04 $641.51 $1330.09 $125.66 $5277.06 1806 5,243 $597 5.99 $11,920 $11,080 

Auump!jQ!ll' 

1 Electricity COIIt - 0.085 $,t.Wh (avenae COlt in 1999 obtained from an interpolation of tho 1995 and 2000 priCCll of electricity forecast in DOE's Annual Energy Outlook 1993, inflated 

to 1992 dollars). Tho interpolated value for 1999 II 0.082 $t1tWh (1991$) or 0.085 after adjustina for inflation from 1991 to 1992. The electricity price enduM factor for CAC is 1.0 (no adjustment). 

2 Lifetime-15 yem. Mukup factor-2.13. 

3 Bueline unit includCll: 

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

Outdoor Coil: 15.00 aq.ft., 20 finl/inch, Slit Fin., 1 tube ro ...... Smooth Tubea 

ComPmlsor. Reciprocating, 10.80 EER (nOlllinal); Accumulator 

Indoor Fan Motor: PSC, 58.5% efficient 

Outdoor Fan Motor: PSC, 55.0% efficient 

EnhanccmentDevices: None 

4 All Two-Speed and Variable-Speed ComprClllOf SyItcml include an Accumulator. 

5 Maximum Sensible Heat Ratio -76.5')1, 

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

7 Evaporator ECM Fan Motor is modulated. COIIt of fan motor includes electronic modulatina controls. 

Condemer ECM Fan M((Or is run at a rinale speed. 

10% 

$10,519 

$10,368 

$10,257 

$10,229 

SI0.118 

$10.034 

$9.878 

$9.666 

$9.411 

$9,299 

$9,247 

$9.145 

$9,053 

58,923 

$8,773 

$8,748 

$8,752 

$8,822 

$8,919 

$8,991 

$9,227 

$9,478 

$10,218 

$9,917 

$9,822 

9/28/93 

Omtulative 

Cost of COIlICI'VCd Energy 

(centshWh) 

4% 6% 10% 

NA NA NA 

0.00 0.00 0.00 

0.00 0.00 0.01 

0.08 0.09 0.11 

0.33 0.37 0.48 

0.47 0.54 0.68 

0.66 0.75 0.96 

0.87 0.99 1.27 

1.11 1.27 1.63 

1.41 1.62 2.07 

1.45 1.66 2.12 

1.72 1.97 2.52 

1.88 2.15 2.74 

1.98 2.27 2.90 

2.45 2.81 3.58 

2.59 2.97 3.79 

2.89 3.31 4.22 

3.82 4.38 5.59 

4.86 5.57 7.11 

5.48 6.28 8.02 

7.11 8.14 10.40 

8.42 9.64 12.31 

13.10 15.00 19.15 

11.77 13.47 17.20 

11.88 13.60 17.37 
9/28/93

Life Cycle Cost for 3-ton Single Package System

Central Heat Pump

6% discount rate

; $11,700

U

$11,300

24

9.0

17

16

10.0 11.0 12.0 13.0 14.0 15.0

SEER

16.0 17.0 18.0 19.0 20.0 21.0

EE-RM-93-801 COMMENT 0CC

$12,900 

o 

$12,500 

$12,100 

~ $11,700 

c::I'\ 

c::I'\ 

~ 

--U 

~ $11,300 

$10,900 

$10,500 

$10,100 

9.0 10.0 11.0 

9/28/93 

Life Cycle Cost for 3·ton Single Package System 

Central Heat Pump 

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

22 

8 

9 

11 

12 

13 

16 

12.0 13.0 14.0 15.0 16.0 17.0 18.0 

SEER 

24 

19.0 20.0 21.0 
9/28/93

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

v $11,300

$10,900

$10,500

$10,100

$9,700

$9,300

$8,900

$8,500

A.

N

N

•

4% discount rate

- - - - 6% discount rate

®- - - - 10% discount rate

b1

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 0CC

$14,500 

. $14,100 

$13,700 

$13,300 

$12,900 

$12,500 

..-.. $12,100 

ur 

~ 

~ $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 

9/28/93 

Life Cycle Cost for 3·ton Single Package System 

Central Heat Pump 

12.0 13.0 

---D-- 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 Costa and Payback Periods of 5-ton, Single Package System Central Heat Pump

9130/93

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

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

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

-

Btuh/W Btuh/W (1992$) (1992$) (1992$) (1992$) (1992$) kWb/ kWh/yr (1992$) (years) 4% 6% 10% 4% 6% 15%

0 Baseline 9.70 6.88 $934.00 - $1342.86 $46.69 $3593.79 5977 13,966 $1,690 NA $22,388 $20,011 $16,451 NA NA NA

1 0+ Backward Inclined Indoor Blower 9.99 7.00 $934.03 $0.03 $1342.86 $46.69 $3593.86 5803 13,732 $1,656 0.00 $22,004 $19,676 $16, 188 0.00 0.00 0.01

2 1+Indoor Coil Slit Fins 10.07 7.06 $934.25 $0.22 1 $1342.86 $46.69 $3594.38 5757 13,611 $1,642 0.01 $21,847 $19,538 $16,081 0.02 0.03 0.04

3 2+ Time Delay Relay 10.36 7.19 $940.75 $6.50 $1342.86 $46.69 $3609.72 5597 13,374 $1,608 0.19 $21,488 $19,227 $15,840 0.38 0.43 0.55

4 3 + Scroll Compressor. 1130 EER 11.93 7.57 $965.13 $24.38 $1342.86 $46.69 $3667.26 4861 12,693 $1,488 0.36 $20,210 $18,118 $14,984 0.59 0.68 0.87

5 4 + More Efficient Outdoor PSC Fan Motor (65.0% 12.05 7.66 $971.43 $6.30 $1342.86 $39.08 $3674.51 4811 12,545 $1,471 0.37 $20,031 $17,962 $14,864 0.62 0.71 0.91

6 5 + Increase Indoor Coil Fin Density to 14 fpi 12.09 7.70 $973.16 $1.73 $1342.86 $39.08 $3678.60 4797 12,484 $1,465 0.38 $19,964 $17,904 $14,819 0.65 0.74 0.94

7 6 + More Efficient Indoor PSC Fan Moto' (68.596) 12.43 7.81 $982.92 $9.76 $1342.86 $31 .47 $3694.03 4665 12,308 $1,439 0.40 $19,689 $17,666 $14,636 0.69 0.79 1.00

8 7 + Demand Defrost 12.43 8 .04 $994.42 $11.50 $1342.86 $31 .47 $3721.17 4665 11,950 $1,408 0.45 $19,379 $17,399 $14,432 0.87 1.00 1.28

9 8 +Non-Bleed Thermostatic Expansion Valves 12.74 8.28 $1,016. 08 $21.66 $1342.86 $31.47 $3772.29 4551 11,608 $1,370 0.56 $19,000 $17,074 $14,190 1.13 1.29 1.65

10 9+Increase Indoor Coil Face Areato 7.50sq .ft. 13.10 8.37 $1,033.92 $17.84 $1353.15 $31.47 $3824.68 4424 11,475 $1,348 0.67 $18,808 $16,913 $14,075 1.34 1.53 1.96

11 10+Outdoor Coil Grooved Tubes 13.30 8 .40 $1,048.28 $14.36 $1353.15 $31.47 $3858.57 4360 11,438 $1,339 0.75 $18,747 $16,864' $14,044 1.47 1.69 2.15

12 11 + Increase Outdoor Coil Face Area to 27.30 esq. 13.74 8.63 $1,106.40 $58.12 $1405.49 $31.47 34048.07 4220 11,135 $1,301 1.17 $18,518 $16,688 $13,947 2.32 2.66 3.40

13 12+ Electronic Expansion Valve 13.93 8.68 $1,154.74 $48.34 $1405.49 $40.45 $4171.13 4161 11,072 $1;291 1.45 $18,527 $16,711 $13,992 2.86 3.27 4.18

14 13+Outdoor ECMFanMotor 14.02 8 .79 $1,227.44 $72.70 $1405 .49 $48.06 $4350.32 4137 10,936 $1,278 1.83 $18,555 $16,758 $14,067 3.70 4.23 5.41

15 14+ Increase Outdoor Coil Face Area to 36.50sq 14.20 8.86 $1,295.30 $67.86 $1467.22 $48.06 $4572.20 4084 10,844 $1,265 2.30 $18,640 $16,861 $14,196 4.65 5.32 6.79

16 15+ Indoor ECM Fan Motor 14.89 8 .95 $1,475.55 $180.25 $1467.22 $63.68 $5013.21 3893 10,733 $1,240 3.15 $18,796 $17,053 $14,442 6.13 7.01 8.95

17 16 + Two-Speed Recip-Compressor System 16.48 8.96 $1,664.30 $188.75 $1467.22 $80.83 $5475.81 3519 10,722 $1,207 3.89 $18,897 $17,199 $14,657 6.89 7.88 10.07

18 16+ Variab1e-Spend Recip-Compressor System 16.65 9.49 $2,075.55 $600.00 $1467.22 $133.11 $6498.64 3481 10,127 $1,153 5.41 $19,323 $17,701 $15,272 10.47 11.98 15.30

19 16+Two-Speed Scroll-Compressor System 16.78 9.73 $1,975.55 $500.00 $1467.22 $128.74 $6258.27 3454 9,875 $1,130 4.75 $18,820 $17,231 $14,852 9.50 10.88 13.89

20 V"ble-Speed Scroll-Compressor System 18.59 10.01 $2,125.55 $650.00 $1467.22 $135.29 $6618.82 3118 9,603 $1,078 4.94 $18,607 $17,091 $14,820 9.52 10.89 13.91

Assum2tionso

i Electricity cost - 0.085 $/kWh (avenge coat 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 1991 The electricity price enduse factor for CAC is 1.0 (no adjustment).

2 Lifetime - 15 years. Markup factor -23&

3 Baseline unit includes:

Indoor Coil: 6.00 sq.ft., 13 frnslmch, Wavy Firs, 4 tube rows, Groove Tubes

Outdoor Coil: 19.5 sq.ft., 20 fins/nch, 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 Salable 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 0CC

Life Cycle Costs and Payback Period!! of S·ton, Single Package System Central Heat Pump 

Ina. Installed Annual Elec Use Annual Cumul. Lifecycle COllI 

SEER HSPF Manuf'r Manufr Installatioo Maintenance Consumer Cooling Heating Energy Payback 

Level Desian Optloo COlt Cost Cost Cost COlt cost Period (1992$) 

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

0 Baseline 9.70 6.88 $934.00 - $1342.86 $46.69 $3593.79 5977 13,966 $1,690 NA $22,388 520,011 

1 o + Backward Inc1ined Indoor Blower 9.99 7.00 $934.03 $0.03 $1342.86 $46.69 $3593.86 5803 13,732 51,656 0.00 $22,004 $19,676 

2 1 + Indoor Coil Slit Fin, 10.07 7.06 $934.25 50.22 J 51342.86 $46.69 $3594.38 5757 13,611 51,642 0.01 $21,847 519,538 

3 2 + Time Delay Relay 10.36 7.19 $940.75 $6.50 $1342.86 $46.69 $3609.72 5597 13,374 $1,608 0.19 $21,488 $19,227 

4 3 + Scroll Compreuor: 11.30 EER 11.93 7.57 $965.13 $24:38 $1342.86 $46.69 $3667.26 4861 12,693 $1,488 0.36 $20,210 $18,118 

5 4 + Mote Efficient Outdoor PSC Fan Mocor (65.0% 12.05 7.66 $971.43 $6.30 $1342.86 $39.08 $3674.51 4811 12,545 $1,471 0.37 $20,031 $17,962 

6 5 + Increuc Indoor Coil Fin I>eosity to 14 !pi 12.09 7.70 $973.16 $1.73 $1342.86 $39.08 $3678.60 4797 12,484 $1,465 0.38 $19,964 $17,904 

7 6 + More Efficient Indoor PSC Fan Motor (68.5%) 12.43 7.81 $982.92 $9.76 $1342.86 $31,47 $3694.03 4665 12,308 $1,439 0.40 $19,689 $17,666 

8 7 + Demand Dcfroct 12.43 8.04 $994.42 $11.50 $1342.86 $31.47 $3721.17 4665 11,950 $1,408 0.45 519,379 $17,399 

9 8 + Non-Bleed 1'bcrmoItatic Expllllicn Valve. 12.74 8.28 $1,016.08 $21.66 $1342.86 $31.47 $3772.29 4551 11,608 $1,370 0.56 $19,000 $17,074 

10 9 + Increuc Indoor Coil Face AIea to 7.50 sq.£\. 13.10 8.37 $1,033.92 $17.84 $1353.15 $31.47 $3824.68 4424 11,475 $1,348 0.67 518,808 $16,913 

11 10+ Outdoor Coil Grooved Tubs 13.30 8.40 $1,048.28 $14.36 $1353.15 $31.47 $3858.57 4360 11,438 $1,339 0.75 $18,747 $16,864 . 

12 11 + Increase Outdoor Coil Face AIea to 27.30 sq.ft 13.74 8.63 $1,106.40 558.12 51405.49 $31.47 $4048.07 4220 11,135 51,301 1.17 $18,518 $16,688 

13 12 + Electronic Expanlicn Valve 13.93 8.68 $1,154.74 $48.34 51405.49 $40.45 $4171.13 4161 11,072 51;291 1.45 $18,527 $16,711 

14 13 + Outdoor ECM Fan Mocor 14.02 8.79 51,227.44 $72.70 $1405.49 $48.06 $4350.32 4137 10,936 $1,278 1.83 518,555 $16,758 

IS 14 + Increase Outdoor Coil Face AIea to 36.50 sq.ft 14.20 8.86 $1,295.30 $67.86 $1467.22 $48.06 $4572.20 4084 10,844 $1,265 2.30 $18,640 $16,861 

16 15 + IndoorECMFan Motor 14.89 8.95 $1,475.55 $180.25 $1467.22 $63.68 $5013.21 3893 10,733 $1,240 3.15 $18,796 $17,053 

17 16 + Tw()oSpeed Rccip..comprcaor System 16.48 8.96 $1,664.30 $188.75 $1467.22 $80.83 $5475.81 3519 10,722 51,207 3.89 518,897 $17,199 

18 16 + V mable-Speed Rccip-Comprcllor S yatem 16.65 9.49 $2,075.55 $600.00 $1467.22 $133.11 $6498.64 3481 10,127 $1,153 5.41 $19,323 517,701 

19 16 + Tw()oSpeed Scro1l-Comp_aor System 16.78 9.73 $1,975.55 $500.00 $1467.22 $128.74 $6258.27 3454 9,875 51,130 4.75 $18,820 $17,231 

20 16 + V mable-Speed Scroll-Comprcuor System 18.59 10.01 $2,125.55 $650.00 51467.22 $135.29 56618.82 3118 9.603 $1,078 4.94 518,607 $17,091 

Assuwptioos: 

1 Electricity cost - 0.085 $/kWb (averase cOlt in 1999 obtained fran an intcrpolatioo of the 1995 and 2000 pricca 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 fran 1991 to 1992. The e1cctricityprice enduse factor for CAC is 1.0 (no adjustment). 

2 Lifetime -IS ycan. Malkup factor - 2.36. 

3 Baseline unit includes: 

Indoor Coil: 6.00 sq.ft., 13 finI/inclI, Wavy Fins, 4 tube rowa, Groove Tubea 

Outdoor Coil: 19.5 sq.£\., 20 finl/incb, Slit Fins, 2 tube rows, Smooth Tubea 

Comprcuor: Reciprocating, 10.49 EER (nominal); Accumulator 

Indoor Fan Motor: PSC, 58.5% efficient 

Outdoor Fan M(U)r, PSC, S5.C)II, efficient 

Enhancement DoviccI: None 

4 Maximum Scnaib1c Heat Ratio • 76.s~ 

5 Non-Bleed The:rmOltitic Expanaioo Valve. replace the need for a Time Delay Relay; Accumulator atiJ.J. required due to exceas refrigerant. . 

6 Evaporator ECM Fan Mocor is modulated. COlt of fan motor includes electronic modulating controls. 

7 Coodcnser ECM Fan Motor is run at a single lpeed. 

10% 

$16,451 

516,188 

$16,081 

$15,840 

$14,984 

$14,864 

$14,819 

514,636 

$14,432 

$14,190 

$14,075 

$14,044 

$13,947 

$13,992 

$14,067 

$14,196 

514,442 

$14,657 

$15,272 

$14.852 

514,820 

9/30/93 

Cumul.ttive 

Cost of Conserved Energy 

(centsIkWh) 

4% 6% 10% 

NA NA NA 

0.00 0.00 0.01 

0.02 0.03 0.04 

0.38 0.43 0.55 

0.59 0.68 0.87 

0.62 0.71 0.91 

0.65 0.74 0.94 

0.69 0.79 1.00 

0.87 1.00 1.28 

1.13 1.29 1.65 

1.34 1.53 1.96 

1.47 1.69 2.15 

2.32 2.66 3.40 

2.86 3.27 4.18 

3.70 4.23 5.41 

4.65 5.32 6.79 

6.13 7.01 8.95 

6.89 7.88 10,07 

10.47 11.98 15.30 

9.50 10.88 13.89 

9.52 10.89 13.91 
9/30/93

Life Cycle Cost for 5-ton Single Package System

Central Heat Pump

$20,200

$19,800

$19,400

$19,000

$18,600

$18,200

$17,800

$17,400

$17,000

$16,600

9.0

6% discount rate

20

H

19.0

EE-RM-93-801 COMMENT 0CC

$20,200 0 

$19,800 

$19,400 

$19,000 

..-, 

f.ft 

~ $18,600 

~ 

'-' 

U U $18,200 

...:l 

$17,800 

$17,400 

$17,000 

$16,600 

9.0 10.0 11.0 

9/30/93 

Life Cycle Cost for 5-ton Single Package System 

Central Heat Pump 

II 6% discount rate I 

4 

7 

8 

9 16 

10 

12.0 13.0 14.0 15.0 16.0 

SEER 

18 

19 

20 

17.0 18.0 19.0 
9/30/93

Life Cycle Cost for 5-ton Single Package System

Central Heat Pump

$23,000

Q

$22,000

$21,000

$20,000

$19,000

$18,000

$17,000

$16,000

$15,000

$14,000

$13,000

9.0

'o.

-- o

--------

1

10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0

SEER

4% discount rate

- - - - 6% discount rate

® 10% discount rate

EE-RM-93-801 COMMENT 0CC

$23,000 

$22,000 

$21,000 

$20,000 

__ $19,000 

Vt 

N 

~ o $18,000 

U 

U 

..::I $17,000 

$16,000 

$15,000 

$14,000 

$13,000 

9.0 10.0 11.0 

9/30/93 

Life Cycle Cost for 5-ton Single Package System 

Central Heat Pump 

12.0 

.. --.... ---. -.. ...' 

13.0 14.0 

SEER 

-0-- 4% discount rate 

- - ts. - - 6% discount rate 

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

,+ 

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

15.0 16.0 17.0 18.0 19.0