APPENDIX 8-F. REBUTTABLE PAYBACK ANALYSIS RESULTS
 

TABLE OF CONTENTS
 

8-F.1 INTRODUCTION ..................................................................................................8-F-1 

8-F.2 ENERGY CALCULATIONS.................................................................................8-F-1 

8-F.2.1 Water Heaters..........................................................................................................8-F-1 

8-F.2.2 Pool Heaters ............................................................................................................8-F-2 

8-F.2.3 Direct Heating Equipment ......................................................................................8-F-3 

8-F.3 RESULTS TABLES ...............................................................................................8-F-4 

8-F.3.1 Water Heaters..........................................................................................................8-F-4 

8-F.3.2 Direct Heating Equipment ......................................................................................8-F-9 

8-F.3.3 Pool Heaters ..........................................................................................................8-F-14 

LIST OF TABLES 

Table 8-F.3.1 Rebuttable Payback Analysis Table for 40 Gallon Gas-Fired Storage 

Water Heaters..............................................................................................8-F-5 

Table 8-F.3.2 Rebuttable Payback Analysis Table for 50 Gallon Electric Storage 

Water Heaters..............................................................................................8-F-6 

Table 8-F.3.3 Rebuttable Payback Analysis Table for 32 Gallon Oil-Fired Storage 

Water Heaters..............................................................................................8-F-7 

Table 8-F.3.4 Rebuttable Payback Analysis Table for 199 kBtu/h Gas-Fired 

Instantaneous Water Heaters.......................................................................8-F-8 

Table 8-F.3.5 Rebuttable Payback Analysis Table for Gas Wall Fan DHE (Over 

42,000 Btu/hr).............................................................................................8-F-9 

Table 8-F.3.6 Rebuttable Payback Analysis Table for Gas Wall Gravity DHE (over 

27,000 Btu/h, up to 46,000 Btu/h) ............................................................8-F-10 

Table 8-F.3.7 Rebuttable Payback Analysis Table for Gas Floor DHE (over 37,000 

Btu/h) ........................................................................................................8-F-11 

Table 8-F.3.8 Rebuttable Payback Analysis Table for Gas Room DHE (over 27,000 

Btu/h, up to 46,000 Btu/h) ........................................................................8-F-12 

Table 8-F.3.9 Rebuttable Payback Analysis Table for Gas Hearth DHE (over 27,000 

Btu/h, up to 46,000 Btu/h) ........................................................................8-F-13 

Table 8-F.3.10 Rebuttable Payback Analysis Table for 250 kBtu/h Gas-Fired Pool 

Heaters (Baseline with Standing Pilot).....................................................8-F-14 

Table 8-F.3.11 Rebuttable Payback Analysis Table for 250 kBtu/h Gas-Fired Pool 

Heaters (Baseline with Electronic Ignition)..............................................8-F-15
 

8-F-i 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

APPENDIX 8-F. REBUTTABLE PAYBACK ANALYSIS RESULTS 

8-F.1 INTRODUCTION 

This appendix contains the cost and efficiency tables described in chapter 8. DOE 

based the payback periods on the calculation methodology found in the DOE Residential 

Water Heaters, Direct Heating Equipment, and Pool Heaters test procedures; these 

payback periods may differ from those found under field conditions. 

8-F.2 ENERGY CALCULATIONS 

8-F.2.1 Water Heaters 

The energy consumption in the LCC analysis is determined using the DOE test 

procedure. The DOE test procedure calculates annual energy consumption, Eannual, as 

1 follows:

E annual = 365 ×Qdm 

Where: 

Qdm = the daily water heating energy consumption, btu/day, and 

365 = number of days in a year. 

Using test procedure equations, Qdm is calculated to be equal to 

o o M ×C ×(135 F −58 F ) total p Qdm = EF 

Where: 

EF = energy factor, 

Mtotal = mass associated with all 6 draws, lb, 

Cp = the specific heat of water computed at a temperature of (58 o

F + 

135 o

F), btu/lb oF, 

135 o

F = tank thermostat setpoint temperature, oF, 

58 o

F = inlet water temperature, oF, and 

Qdm = the daily water heating energy consumption, btu/day. 

Mtotal is calculated by multiplying the total volume of water withdrawn (64.3 

gallons) by the water density (8.204 lb/gallon) at the mean outlet water temp (135 o

F 

water temp). Mtotal equals 527.5 lb/day. Cp equals 0.9979 Btu/lb °F. 

For gas-fired storage water heaters, gas-fired instantaneous water heaters, and oilfired storage water heaters, it is necessary to disaggregate electricity and fuel 

consumption, since Qdm is the sum of fuel and electricity consumption. DOE calculated 

electricity consumption by determining burner operating hours and estimating electricity 

8-F-1 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

consumption. DOE calculated gas consumption by subtracting electricity consumption 

from total water heater energy consumption (Qdm). 

8-F.2.2 Pool Heaters 

DOE calculated the average annual fossil fuel energy, EF, using the DOE test 

procedure:2 

E F = BOH ×Q IN − (POH − BOH ) ×QP 

Where: 

BOH = burner operating hours,
 

QIN = pool heater input rate, kBtu/h,
 

POH = pool operating hours, h/yr, and
 

QP = pilot light input rate, kBtu/yr.
 

To calculate differences in energy use by improved efficiency levels BOH was 

calculated as follows: 

LOAD BOH = QIN × Et 

Where: 

BOH = burner operating hours,
 

LOAD = pool heater heating load,
 

QIN = pool heater input rate, kBtu/h, and
 

Et = thermal efficiency.
 

QIN is 250 kbtu/h. The pool heater heating load is calculated to be 203 therms for 

the baseline 78 percent thermal efficiency equipment and then set fixed for all other 

design options. 

DOE calculated the electricity consumption at selected energy efficiency levels 

for each household using the method provided in the DOE test procedure: 

EF = BOH × PE 

Where: 

BOH = burner operating hours, and
 

PE= electrical consumption of the heater.
 

8-F-2 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8-F.2.3 Direct Heating Equipment 

DOE calculated the average annual fuel energy for gas or oil vented heaters, EF, 

for single-stage direct heating equipment using the following formula from the current 

revision of DOE’s test procedure:3 

EF = BOH SS × (QIN − QP ) + 8760 × QP 

Where: 

BOH = burner operating hours, h,
 

Qin = input capacity, kBtu/h (at the max input rate),
 

8760 = hours per year, and
 

Qp = pilot light input rate, kBtu/h.
 

The burner operating hours are calculated as follows: 

BOH SS = 1416 × AF × A× DHR −1416 × B 

Where: 

1,416 = national average heating load hours, h,
 

AF = adjustment factor (0.7067),
 

PE = maximum electric power, kW,
 

100,000 A = , 341,000 × PE + (Q in P U − Q )×η

DHR = typical design heating requirements based on QOUT, 

2,938 × QP ×η U × A 

B = 

100,000
 

100,000 = factor that accounts for percent and kBtu
 

QP = pilot light input rate, kBtu/h
 

2950 × AFUE ×η ×Q
 SS in ηU = 

2950 ×η SS ×Qin − AFUE × 2.033 × 4600 ×QP
 

ηSS = steady state efficiency
 

The DHR value only needs to be established for baseline units. Although each 

design option affects the output capacity of the heater, the DHR is assumed to be 

established according to the specifications of the baseline unit and remains constant 

regardless of how the output capacity is affected. 

The steady state efficiency (ηSS) is calculated by solving for ηSS in the equation 

given in section 4.1.17 of the DOE test procedure. 

The electricity consumption is calculated as follows: 

8-F-3 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

E = BOH × PE AE SS 

Where: 

BOHSS = burner operating hours, h, and
 

PE = electricity demand when the product is firing, kW.
 

8-F.3 RESULTS TABLES 

Table 8-F.3.1 to Table 8-F.3.8 show the rebuttable payback period calculation 

results for the three product classes. 

8-F.3.1 Water Heaters 

8-F-4 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

Table 8-F.3.1 Rebuttable Payback Analysis Table for 40 Gallon Gas-Fired Storage Water Heaters
 

Efficiency Level

Energy Factor Design Option 

Cost Data 

Manufacturer Costs Energy Use Data S

($ per unit) 

Consumer Costs 

($ per unit) 

Manufacturer

Production Cost

(MPC)

Total Manufacturer

Selling Price (MSP)

Incremental MSP

Retail

Installation

Maintenance

& Repair

Fuel

Electricity

Total Installed Costs

2008$ 2008$ 2008$ $ $ $ MMBtu/yr kWh/yr $ 

0 0.59 Standing Pilot, 1” ins $180 $255 $415 $572.06 $11.28 24.91 0 $981 0.62 Standing Pilot, 1.5” ins $187 $265 $11 $428 $591.23 $11.28 24.06 0 $1,0

2 0.63 Standing Pilot, 2” ins $194 $282 $27 $450 $617.76 $11.33 23.59 0 $1,0

3 0.64 Electronic Ignition, 1” ins, Power Vent $307 $421 $167 $633 $775.54 $13.42 22.60 152 $1,4

4 0.65 Electronic Ignition, 1.5” ins, Power Vent $315 $432 $178 $647 $789.10 $13.42 22.11 150 $1,45 0.67 Electronic Ignition, 2” ins, Power Vent $322 $449 $195 $669 $804.99 $13.42 21.61 149 $1,4

6 0.80 Condensing, 2” ins, Power Vent $454 $622 $367 $894 $824.39 $13.42 18.02 140 $1,7

* The manufacturing production cost (MPC) includes the direct labor, direct material, and direct overhead.
 ** The manufacturing selling price (MSP) includes manufacturer profit and non-production costs, such as selling, general and administand development, and interest.
 

8-F-5 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

Table 8-F.3.2 Rebuttable Payback Analysis Table for 50 Gallon Electric Storage Water Heaters
 

Efficiency Level

Energy Factor Design Option 

Cost Data 

Energy 

Use Data Manufacturer Costs S

($ per unit) 

Consumer Costs 

($ per unit) 

Manufacturer

Production Cost

(MPC)

Total Manufacturer

Selling Price (MSP)

Incremental MSP

Retail

Installation

Maintenance

& Repair

Electricity

Total Installed Costs

2008$ 2008$ 2008$ $ $ $ kWh/yr $ 

0 0.90 1.5" Foam Insulation (Baseline) $133 $194 $306 $216.52 $4.42 4818 $52

1 0.91 2" Foam Insulation $140 $204 $10 $319 $235.24 $4.42 4765 $552 0.92 2.25" Foam Insulation $144 $209 $15 $325 $245.12 $4.42 4713 $573 0.93 2.5" Foam Insulation $148 $215 $21 $334 $252.37 $4.42 4662 $584 0.94 3" Foam Insulation $156 $226 $32 $348 $275.97 $4.42 4613 $625 0.95 4" Foam Insulation $173 $251 $57 $380 $275.97 $4.42 4564 $656 2.0 2” Foam Insulation, Heat Pump $542 $743 $549 $1,018 $439.69 $9.32 2168 $1,47 2.20 2.5” Foam Insulation, Improved Compressor, Heat Pump $589 $805 $611 $1,098 $443.48 $9.32 1971 $1,5

* The manufacturing production cost (MPC) includes the direct labor, direct material, and direct overhead.
 ** The manufacturing selling price (MSP) includes manufacturer profit and non-production costs, such as selling, general and administand development, and interest.
 

8-F-6 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

Table 8-F.3.3 Rebuttable Payback Analysis Table for 32 Gallon Oil-Fired Storage Water Heaters
 

Efficiency Level

Energy Factor Design Option 

Cost Data 

Manufacturer Costs Energy Use Data S

($ per unit) 

Consumer Costs 

($ per unit) 

Manufacturer

Production Cost

(MPC)

Total Manufacturer

Selling Price (MSP)

Incremental MSP

Retail

Installation

Maintenance

& Repair

Fuel

Electricity

Total Installed Costs

2008$ 2008$ 2008$ $ $ $ MMBtu/yr kWh/yr $ 

0 0.53 1” Fiberglass Insulation (Baseline) 577 767 1,230 649 157 27.61 87 1,87

1 0.54 1.5” Fiberglass Insulation 583 776 9 1,242 649 157 27.10 86 1,892 0.56 2” Fiberglass Insulation 589 784 17 1,253 649 157 26.14 83 1,90

3 0.58 2.5” Fiberglass Insulation 599 804 37 1,279 649 157 25.23 80 1,92

4 0.60 2” Foam Insulation 596 793 26 1,264 649 157 24.39 77 1,91

5 0.62 2.5” Foam Insulation 608 815 48 1,292 649 157 23.61 75 1,94

6 0.66 1” Fiberglass Insulation, Enhanced Flue Baffle 680 900 134 1,403 649 157 22.18 70 2,057 0.68 

1” Foam Insulation, Enhanced Flue Baffle (Max Tech) 

685 906 140 1,410 649 157 21.52 68 2,05

* The manufacturing production cost (MPC) includes the direct labor, direct material, and direct overhead.
 ** The manufacturing selling price (MSP) includes manufacturer profit and non-production costs, such as selling, general and administand development, and interest.
 

8-F-7 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

Table 8-F.3.4 Rebuttable Payback Analysis Table for 199 kBtu/h Gas-Fired Instantaneous Water Heat

Efficiency Level

Energy Factor Design Option 

Cost Data 

Manufacturer Costs Energy Use Data S

($ per unit) 

Consumer Costs 

($ per unit) 

Manufacturer

Production Cost

(MPC)

Total Manufacturer

Selling Price (MSP)

Incremental MSP

Retail

Installation

Maintenance

& Repair

Fuel

Electricity

Total Installed Costs

2008$ 2008$ 2008$ $ $ $ MMBtu/yr kWh/yr $ 

0 0.62 Standing Pilot (Baseline) 282.42 409.51 684.12 967.28 63.81 23.86 0.00 1,6511 0.69 Standing Pilot, Improved HX 296.67 430.17 21 712.08 967.28 63.81 21.44 0.00 1,6792 0.78 Electronic Ignition, Improved HX 326.63 473.62 64 770.85 1,179.38 64.19 18.88 26.59 1,950

3 0.80 Electronic Ignition, Power Vent 436.64 633.13 224 986.66 1,179.38 67.24 18.38 31.57 2,1664 0.82 Electronic Ignition, Improved HX, Power Vent 474.06 687.38 278 1,060.06 1,179.38 67.24 17.93 31.40 2,2395 0.84 Electronic Ignition, Improved HX, Power Vent 762.55 1,105.70 696 1,626.01 1,179.38 67.24 17.51 31.23 2,805

6 0.85 

Electronic Ignition, Improved HX, Direct Vent, Power Vent 

807.77 1,171.27 762 1,714.72 1,179.38 67.24 17.30 31.15 2,894

7 0.92 

Electric Ignition, Power Vent, Direct Vent, Condensing 

884.59 1,282.65 873 1,865.41 877.09 67.24 15.98 30.65 2,742

8 0.95 

Electric Ignition, Power Vent, Direct Vent, Condensing (Max Tech) 

985.30 1,428.69 1,019 2,062.99 877.09 67.24 15.47 30.45 2,940

* The manufacturing production cost (MPC) includes the direct labor, direct material, and direct overhead.
 ** The manufacturing selling price (MSP) includes manufacturer profit and non-production costs, such as selling, general and administand development, and interest.
 

8-F-8 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

 

8-F.3.2 Direct Heating Equipment
 Table 8-F.3.5 Rebuttable Payback Analysis Table for Gas Wall Fan DHE (Over 42,000 Btu/hr)
 

Efficiency Level

AFUE Design Option 

Cost Data 

Manufacturer Costs Energy Use Data 

($ per unit) 

Consumer Costs 

($ per unit) 

Manufacturer

Production Cost

(MPC)

Total Manufacturer

Selling Price (MSP)

Incremental MSP

Retail

Installation

Maintenance

& Repair

Burner Operating

Hours (BOH)

Fuel

Electricity

2008$ 2008$ 2008$ $ $ $ hrs MMBtu/yr kWh/yr 

0 74% Standing Pilot (Baseline) 351 474 931.99 823.65 51.21 849 49.83 61.60 

1 75% Electronic Ignition, Two- Speed Blower 376 508 33 985.52 823.65 51.88 880 48.39 67.05 

2 76% Electronic Ignition, Improved HX 387 523 48 1,009.60 823.65 51.88 868 47.76 66.17 3 77% 

Electronic Ignition, TwoSpeed Blower, Improved HX 

407 549 75 1,052.19 823.65 51.88 857 47.15 65.32 

4 80% 

Electronic Ignition, Induced Draft (MaxTech) 465 628 153 1,178.54 823.65 54.71 822 45.21 103.75 

* The manufacturing production cost (MPC) includes the direct labor, direct material, and direct overhead.
 ** The manufacturing selling price (MSP) includes manufacturer profit and non-production costs, such as selling, general and administand development, and interest.
 

8-F-9 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

 

 

Table 8-F.3.6 Rebuttable Payback Analysis Table for Gas Wall Gravity DHE (over 27,000 Btu/h, up to 

Efficiency Level

Thermal Efficiency Design Option 

Cost Data 

Manufacturer Costs Energy Use Data 

($ per unit) 

Consumer Costs 

($ per unit) 

Manufacturer

Production Cost

(MPC)

Total Manufacturer

Selling Price (MSP)

Incremental MSP

Retail

Installation

Maintenance

& Repair

Burner Operating

Hours (BOH)

Fuel

Electricity

2008$ 2008$ 2008$ $ $ $ hrs MMBtu/yr kWh/yr 

0 64% Standing Pilot (Baseline) 207 280 549.49 823.65 47.20 847 32.80 0.00 1 66% Standing Pilot, Improved HX 234 315 $36 606.83 823.65 47.20 820 31.86 0.00 

2 68% Standing Pilot, Improved HX 250 338 $58 643.51 823.65 47.20 794 30.97 0.00 

3 71% Standing Pilot, Improved HX 285 385 106 719.42 823.65 47.20 758 29.74 0.00 

4 72% Standing Pilot, Improved HX, Electronic Ignition 354 478 199 868.84 961.76 47.90 812 28.43 13.16 

* The manufacturing production cost (MPC) includes the direct labor, direct material, and direct overhead.
 ** The manufacturing selling price (MSP) includes manufacturer profit and non-production costs, such as selling, general and administand development, and interest.
 

8-F-10 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

 

 

Table 8-F.3.7 Rebuttable Payback Analysis Table for Gas Floor DHE (over 37,000 Btu/h)
 

Efficiency Level

Thermal Efficiency Design Option 

Cost Data 

Manufacturer Costs Energy Use Data 

($ per unit) 

Consumer Costs 

($ per unit) 

Manufacturer

Production Cost

(MPC)

Total Manufacturer

Selling Price (MSP)

Incremental MSP

Retail

Installation

Maintenance

& Repair

Burner Operting

Hours (BOH)

Fuel

Electricity

2008$ 2008$ 2008$ $ $ $ hrs MMBtu/yr kWh/yr 

0 57% Standing Pilot (Baseline) 357 482 947.46 1,161.35 47.21 864 59.72 0.00 1 58% Standing Pilot, Improved HX 381 514 32 998.84 1,161.35 47.21 849 58.72 0.00 

* The manufacturing production cost (MPC) includes the direct labor, direct material, and direct overhead.
 ** The manufacturing selling price (MSP) includes manufacturer profit and non-production costs, such as selling, general and administand development, and interest.
 

8-F-11 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

 

 

Table 8-F.3.8 Rebuttable Payback Analysis Table for Gas Room DHE (over 27,000 Btu/h, up to 46,000 

Efficiency Level

Thermal Efficiency Design Option 

Cost Data 

Manufacturer Costs Energy Use Data 

($ per unit) 

Consumer Costs 

($ per unit) 

Manufacturer

Production Cost

(MPC)

Total Manufacturer

Selling Price (MSP)

Incremental MSP

Retail

Installation

Maintenance

& Repair

Burner Operting

Hours (BOH)

Fuel

Electricity

2008$ 2008$ 2008$ $ $ $ hrs MMBtu/yr kWh/yr 

0 64% Standing Pilot (Baseline) 226 305 597.34 634.21 46.89 864 32.61 0.00 1 65% Standing Pilot, Improved HX 241 325 20 629.34 634.21 46.89 850 32.13 0.00 

2 66% Standing Pilot, Improved HX 256 346 41 663.74 634.21 46.89 837 31.66 0.00 

3 67% Standing Pilot, Improved HX 263 355 50 677.13 634.21 46.89 824 31.21 0.00 

4 68% Standing Pilot, Improved HX 272 367 63 697.60 634.21 46.89 811 30.77 0.00 

5 83% 

Electronic Ignition, Dual Shaft Blower, Electronic Controls 

406 548 244 987.98 821.06 51.07 696 24.35 87.82 

* The manufacturing production cost (MPC) includes the direct labor, direct material, and direct overhead.
 ** The manufacturing selling price (MSP) includes manufacturer profit and non-production costs, such as selling, general and administand development, and interest.
 

8-F-12 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

 

 

Table 8-F.3.9 Rebuttable Payback Analysis Table for Gas Hearth DHE (over 27,000 Btu/h, up to 46,00

Efficiency Level

Thermal Efficiency Design Option 

Cost Data 

Manufacturer Costs Energy Use Data 

($ per unit) 

Consumer Costs 

($ per unit) 

Manufacturer

Production Cost

(MPC)

Total Manufacturer

Selling Price (MSP)

Incremental MSP

Retail

Installation

Maintenance

& Repair

Burner Operting

Hours (BOH)

Fuel

Electricity

2008$ 2008$ 2008$ $ $ $ hrs MMBtu/yr kWh/yr 

0 64% Standing Pilot (Baseline) 359 485 1,028.48 634.21 47.03 864 32.61 0.00 1 67% Standing Pilot, Improved HX 357 482 -3 1,023.38 698.20 47.64 873 30.55 14.14 

2 72% Standing Pilot, Improved HX 531 716 232 1,424.80 698.20 51.39 806 28.20 61.40 

3 93% Standing Pilot, Improved HX 886 1,196 712 2,244.34 698.20 54.03 622 21.77 78.50 

* The manufacturing production cost (MPC) includes the direct labor, direct material, and direct overhead.
 ** The manufacturing selling price (MSP) includes manufacturer profit and non-production costs, such as selling, general and administand development, and interest.
 

8-F-13 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

 

 

8-F.3.3 Pool Heaters
 Table 8-F.3.10 Rebuttable Payback Analysis Table for 250 kBtu/h Gas-Fired Pool Heaters (Baseline wit

Efficiency Level

Thermal Efficiency Design Option 

Cost Data 

Manufacturer Costs Energy Use Data 

($ per unit) 

Consumer Costs 

($ per unit) 

Manufacturer

Production Cost

(MPC)

Total Manufacturer

Selling Price (MSP)

Incremental MSP

Retail

Installation

Maintenance

& Repair

Burner Operting

Hours (BOH)

Fuel

Electricity

2008$ 2008$ 2008$ $ $ $ hrs MMBtu/yr kWh/yr 

0 78% Standing Pilot (Baseline) $529 $688 $1,137.69 $1,221.61 $49.18 218 58.81 0.00 

1 79% Improved HX $540 $702 $14 $1,156.88 $1,221.61 $49.18 215 58.12 0.00 

2 81% Improved HX $553 $719 $31 $1,179.54 $1,221.61 $49.18 210 56.80 0.00 

3 82% 

Improved HX, More Effective Insulation (Combustion Chamber) 

$584 $759 $72 $1,233.60 $1,221.61 $49.18 208 56.16 0.00 

4 83% Power Venting $674 $876 $189 $1,390.52 $1,313.53 $50.63 205 51.28 10.77 

5 84% Power Venting, Improved HX $735 $956 $268 $1,496.89 $1,313.53 $50.63 203 50.67 10.64 6 86% Sealed Combustion, Improved HX $980 $1,274 $586 $1,924.08 $1,413.53 $71.80 198 49.49 10.39 

7 90% Sealed Combustion, Condensing $1,467 $1,907 $1,219 $2,773.24 $1,413.53 $71.80 189 47.29 9.93 

8 95% 

Sealed Combustion, Condensing, Improved HX (Max-Tech) 

$1,603 $2,084 $1,396 $3,010.38 $1,413.53 $71.80 179 44.80 9.41 

* The manufacturing production cost (MPC) includes the direct labor, direct material, and direct overhead.
 ** The manufacturing selling price (MSP) includes manufacturer profit and non-production costs, such as selling, general and administand development, and interest.
 

8-F-14 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

 

 

Table 8-F.3.11 Rebuttable Payback Analysis Table for 250 kBtu/h Gas-Fired Pool Heaters (Baseline wit

Ignition) 

Efficiency Level

Thermal Efficiency Design Option 

Cost Data 

Manufacturer Costs Energy Use Data 

($ per unit) 

Consumer Costs 

($ per unit) 

Manufacturer

Production Cost

(MPC)

Total Manufacturer

Selling Price (MSP)

Incremental MSP

Retail

Installation

Maintenance

& Repair

Burner Operting

Hours (BOH)

Fuel

Electricity

2008$ 2008$ 2008$ $ $ $ hrs MMBtu/yr kWh/yr 

0 78% Electronic Ignition (Baseline) $548 $712 $1,178.56 $1,313.53 $48.83 218 54.56 0.55 

1 79% Improved HX $558 $725 $13 $1,195.99 $1,313.53 $48.83 215 53.87 0.54 

2 81% Improved HX $572 $744 $31 $1,220.40 $1,313.53 $48.83 210 52.54 0.53 

3 82% 

Improved HX, More Effective Insulation (Combustion Chamber) 

$603 $784 $72 $1,274.46 $1,313.53 $48.83 208 51.90 0.52 

4 83% Power Venting $674 $876 $164 $1,398.26 $1,313.53 $50.63 205 51.28 10.77 

5 84% Power Venting, Improved HX $735 $956 $243 $1,504.62 $1,313.53 $50.63 203 50.67 10.64 6 86% Sealed Combustion, Improved HX $980 $1,274 $562 $1,931.82 $1,413.53 $71.80 198 49.49 10.39 

7 90% Sealed Combustion, Condensing $1,467 $1,907 $1,195 $2,780.97 $1,413.53 $71.80 189 47.29 9.93 

8 95% 

Sealed Combustion, Condensing, Improved HX (Max-Tech) 

$1,603 $2,084 $1,372 $3,018.11 $1,413.53 $71.80 179 44.80 9.41 

* The manufacturing production cost (MPC) includes the direct labor, direct material, and direct overhead.
 ** The manufacturing selling price (MSP) includes manufacturer profit and non-production costs, such as selling, general and administand development, and interest.
 

8-F-15 

EE-2006-STD-0129 COMMENT 56.10
 

 

 

 

 

 

 

 

 

REFERENCES
 

1.	 Department Of Energy, Appendix E to Subpart B of Part 430-Uniform Test Method For 

Measuring The Energy Consumption Of Water Heaters. filed as "WH Test Procedure 10 

CFR 430 subpart B, Appendix E". 

2.	 Department Of Energy, Appendix P to Subpart B of Part 430-Uniform Test Method For 

Measuring The Energy Consumption Of Pool Heaters. filed as "PH Test Procedure 10 

CFR 430 subpart B, Appendix P". 

3.	 Department Of Energy, Appendix O to Subpart B of Part 430-Uniform Test Method For 

Measuring The Energy Consumption Of Vented Home Heating Equipment. filed as "WH 

Test Procedure 10 CFR 430 subpart B, Appendix E". 

8-F-16 

EE-2006-STD-0129 COMMENT 56.10