APPENDIX E. DETAILED LIFE-CYCLE COST OUTPUT 

TABLE OF CONTENTS 

E.1 INTRODUCTION ..............................................................................................................E-1

E.2 LCC RESULTS ..................................................................................................................E-1

E.2.1 Standard Size PTAC with Cooling Capacity of 9000 Btu/h (PTAC 9000)............E-1

E.2.2 Standard Size PTACs with Cooling Capacity of 12,000 Btu/h (PTAC 

12000) .....................................................................................................................E-6

E.2.3 Standard Size PTHP with Cooling Capacity of 9000 Btu/h (PTHP 9000) ...........E-11

E.2.4 Standard Size PTHP with Cooling Capacity of 12,000 Btu/h (PTHP 12000) ......E-16

E.2.5 Non-Standard Size PTAC with Cooling Capacity of 11,000 Btu/h (PTAC 

11000) ...................................................................................................................E-21

E.2.6 Non-Standard Size PTHP with Cooling Capacity of 11,000 Btu/h (PTHP 

11000) ...................................................................................................................E-26

E.3 SENSITIVITY OF LCC RESULTS TO ELECTRICITY PRICE FORECAST ..............E-31

LIST OF TABLES 

Table E.2.1 Distribution of Life-Cycle Cost Savings from a Baseline Level (Level 0) 

by Efficiency Level for PTAC 9000.................................................................E-2

Table E.2.2 Summary of PBP Results for All Efficiency Levels: PTAC 9000 ...................E-4

Table E.2.3 Distribution of Life-Cycle Cost Savings from a Baseline Level (Level 0) 

by Efficiency Level for PTAC 12000...............................................................E-7

Table E.2.4 Summary of PBP Results for All Efficiency Levels: PTAC 12000 .................E-9

Table E.2.5 Distribution of Life-Cycle Cost Savings from a Baseline Level (Level 0) 

by Efficiency Level for PTHP 9000 ...............................................................E-12

Table E.2.6 Summary of PBP Results for All Efficiency Levels: PTHP 9000 ..................E-14

Table E.2.7 Distribution of Life-Cycle Cost Savings from a Baseline Level (Level 0) 

by Efficiency Level for PTHP 12000 .............................................................E-17

Table E.2.8 Summary of PBP Results for All Efficiency Levels: PTHP 12000 ................E-19

Table E.2.9 Distribution of Life-Cycle Cost Savings from a Baseline Level (Level 0) 

by Efficiency Level for PTAC 11000.............................................................E-22

Table E.2.10 Summary of PBP Results for All Efficiency Levels: PTAC 11000 ...............E-24

Table E.2.11 Distribution of Life-Cycle Cost Savings from a Baseline Level (Level 0) 

by Efficiency Level for PTHP 11000 .............................................................E-27

Table E.2.12 Summary of PBP Results for All Efficiency Levels: PTHP 11000 ................E-29

Table E.3.1 Summary of LCC Results: Low Electricity Price Forecast, PTAC 9000 .......E-31

Table E.3.2 Summary of LCC Results: Low Electricity Price Forecast, PTAC 12000 .....E-31

Table E.3.3 Summary of LCC Results: Low Electricity Price Forecast, PTHP 9000 .......E-32

Table E.3.4 Summary of LCC Results: Low Electricity Price Forecast, PTHP 12000 .....E-32

Table E.3.5 Summary of LCC Results: Low Electricity Price Forecast, PTAC 11000 .....E-32

Table E.3.6 Summary of LCC Results: Low Electricity Price Forecast, PTHP 11000 .....E-33

Table E.3.7 Summary of LCC Results: High Electricity Price Forecast, PTAC 9000 ......E-33

E-i 

 EERE-2007-BT-STD-0012 COMMENT 32
Table E.3.8 Summary of LCC Results: High Electricity Price Forecast, PTAC 12000 ....E-33

Table E.3.9 Summary of LCC Results: High Electricity Price Forecast, PTHP 9000 .......E-34

Table E.3.10 Summary of LCC Results: High Electricity Price Forecast, PTHP 12000 .....E-34

Table E.3.11 Summary of LCC Results: High Electricity Price Forecast, PTAC 11000 ....E-34

Table E.3.12 Summary of LCC Results: High Electricity Price Forecast, PTHP 11000 .....E-35

Table E.3.13 Summary of PBP Results: Low Electricity Price Forecast, PTAC 9000 ........E-35

Table E.3.14 Summary of PBP Results: Low Electricity Price Forecast, PTAC 12000 ......E-35

Table E.3.15 Summary of PBP Results: Low Electricity Price Forecast, PTHP 9000 ........E-36

Table E.3.16 Summary of PBP Results: Low Electricity Price Forecast, PTHP 12000 ......E-36

Table E.3.17 Summary of PBP Results: Low Electricity Price Forecast, PTAC 11000 ......E-36

Table E.3.18 Summary of PBP Results: Low Electricity Price Forecast, PTHP 11000 ......E-37

Table E.3.19 Summary of PBP Results: High Electricity Price Forecast, PTAC 9000 .......E-37

Table E.3.20 Summary of PBP Results: High Electricity Price Forecast, PTAC 12000 .....E-37

Table E.3.21 Summary of PBP Results: High Electricity Price Forecast, PTHP 9000 .......E-38

Table E.3.22 Summary of PBP Results: High Electricity Price Forecast, PTHP 12000 .....E-38

Table E.3.23 Summary of PBP Results: High Electricity Price Forecast, PTAC 11000 .....E-38

Table E.3.24 Summary of PBP Results: High Electricity Price Forecast, PTAC 11000 .....E-39

LIST OF FIGURES 

Figure E.2.1 Effect of the Change in Efficiency Level on Average Life-Cycle Cost for 

PTAC 9000 (Level 0 is the Baseline Level) .....................................................E-2

Figure E.2.2 Cumulative Chart of LCC Savings for All Efficiency Levels: PTAC 

9000...................................................................................................................E-3

Figure E.2.3 Effect of the Change in Efficiency Level on Average Payback Period for 

PTAC 9000 (Level 0 is the Baseline Level). ....................................................E-4

Figure E.2.4 Cumulative Chart of PBP for All Efficiency Levels: PTAC 9000 ..................E-5

Figure E.2.5 Effect of the Change in Efficiency Level on Average Life-Cycle Cost for 

PTAC 12000 (Level 0 is the Baseline Level). ..................................................E-7

Figure E.2.6 Cumulative Chart of LCC Savings for All Efficiency Levels: PTAC 

12000.................................................................................................................E-8

Figure E.2.7 Effect of the Change in Efficiency Level on Average Payback Period for 

PTAC 12000 (Level 0 is the Baseline Level). ..................................................E-9

Figure E.2.8 Cumulative Chart of PBP for All Efficiency Levels: PTAC 12000 ..............E-10

Figure E.2.9 Effect of the Change in Efficiency Level on Average Life-Cycle Cost for 

PTHP 9000 (Level 0 is the Baseline Level)....................................................E-12

Figure E.2.10 Cumulative Chart of LCC Savings for All Efficiency Levels: PTHP 

9000.................................................................................................................E-13

Figure E.2.11 Effect of the Change in Efficiency Level on Average Payback Period for 

PTHP 9000 (Level 0 is the Baseline Level)....................................................E-14

Figure E.2.12 Cumulative Chart of PBP for All Efficiency Levels: PTHP 9000.................E-15

Figure E.2.13 Effect of the Change in Efficiency Level on Average Life-Cycle Cost for 

PTHP 12000 (Level 0 is the Baseline Level). .................................................E-17

Figure E.2.14 Cumulative Chart of LCC Savings for All Efficiency Levels: PTHP 

12000...............................................................................................................E-18

E-ii 

 EERE-2007-BT-STD-0012 COMMENT 32
Figure E.2.15 Effect of the Change in Efficiency Level on Average Payback Period for 

PTHP 12000 (Level 0 is the Baseline Level). .................................................E-19

Figure E.2.16 Cumulative Chart of PBP for All Efficiency Levels: PTHP 12000...............E-20

Figure E.2.17 Effect of the Change in Efficiency Level on Average Life-Cycle Cost for 

PTAC 11000 (Level 0 is the Baseline Level). ................................................E-22

Figure E.2.18 Cumulative Chart of LCC Savings for All Efficiency Levels: PTAC 

11000...............................................................................................................E-23

Figure E.2.19 Effect of the Change in Efficiency Level on Average Payback Period for 

PTAC 11000 (Level 0 is the Baseline Level). ................................................E-24

Figure E.2.20 Cumulative Chart of PBP for All Efficiency Levels: PTAC 11000 ..............E-25

Figure E.2.21 Effect of the Change in Efficiency Level on Average Life-Cycle Cost for 

PTHP 11000 (Level 0 is the Baseline Level). .................................................E-27

Figure E.2.22 Cumulative Chart of LCC Savings for All Efficiency Levels: PTHP 

11000...............................................................................................................E-28

Figure E.2.23 Effect of the Change in Efficiency Level on Average Payback Period for 

PTHP 11000 (Level 0 is the Baseline Level). .................................................E-29

Figure E.2.24 Cumulative Chart of PBP for All Efficiency Levels: PTHP 11000...............E-30

E-iii 

 EERE-2007-BT-STD-0012 COMMENT 32
APPENDIX E. DETAILED LIFE-CYCLE COST OUTPUT 

E.1 INTRODUCTION 

Appendix E contains detailed output from the Life-Cycle Cost (LCC) analysis for 

packaged terminal air conditioners (PTACs) and packed terminal heat pumps (PTHPs) as 

developed using the LCC spreadsheet. LCC and payback periods are presented in terms of 

national average LCC, national average LCC savings from the baseline efficiency level (Level 0, 

corresponding to ASHRAE/IESNA Standard 90.1-1999) and national average payback period 

results for each of the six equipment classes analyzed at each efficiency level. See Chapter 8 of 

the TSD for an explanation of the tables and figures in this appendix. 

E.2 LCC RESULTS 

E.2.1 Standard Size PTAC with Cooling Capacity of 9000 Btu/h (PTAC 9000) 

Figure E.2.1 shows the variation of the life-cycle cost with the efficiency levels for each 

of the efficiency levels considered for the analysis. The installed cost is the sum of the 

equipment price and the installation cost of the equipment and the former is the largest 

contributor to the increasing total installed cost as the efficiency level rises from Level 0 to 

Level 4 (with reduced energy consumption). The LCC results show that at the efficiency levels 

(Level 1 - Level 4), the lifetime operating cost has less of an impact on the LCC than the total 

installed cost. In other words, the decrease in lifetime operating costs (due to reduced electricity 

costs) is more than offset the increase in total installed cost. As a result, the LCC at (nearly) all 

efficiency levels is higher than that for the baseline efficiency level (Level 0) for this equipment 

class. Table E.2.1 shows the national distribution of LCC savings above the baseline (Level 0) 

calculated for this equipment for the higher efficiency levels [1-4]. Negative values mean 

negative savings; i.e. increases in life-cycle cost. Figure E.2.2 show this distribution of LCC 

savings graphically for each efficiency level analyzed. 

Figure E.2.3 shows the effect on payback period as the efficiency level changes from 

Level 0 (baseline) to Level 4, on a national averaged basis weighted over all building types, 

energy prices, sales taxes and installation costs. Table E.2.2 shows the national distribution of 

payback periods calculated for all efficiency levels as well as the average payback and the 

percent of units with a payback of less than 3 years. Figure E.2.4 show this distribution of 

payback results graphically for each efficiency level analyzed. 

E-1 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

 

Efficiency Level-LCC Tradeoff 

Equipment= PTAC Standard Size - 9,000 Btu/h, Fuel Price=AEO 2008 - Reference Case, Start Year= 2012 

$2,938 

$2,938 

$2,946 

$2,942 

$2,940 

$2,937 

$2,938 

$2,939 

$2,940 

$2,941 

$2,942 

$2,943 

$2,944 

$2,945 

$2,946 

$2,947 

Life Cycle Cost 

LCC-Efficiency Level Tradeoff 

0 1 2 

Efficiency Level 

3 4 

Figure E.2.1 Effect of the Change in Efficiency Level on Average Life-Cycle Cost for 

PTAC 9000 (Level 0 is the Baseline Level) 

Table E.2.1 Distribution of Life-Cycle Cost Savings from a Baseline Level (Level 0) by 

Efficiency Level for PTAC 9000. 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$14 -$10 -$8 -$7 -$5 -$3 -$2 $1 $3 $8 $111 -$1 33% 

Level 2 -$24 -$17 -$15 -$12 -$10 -$7 -$4 $0 $5 $13 $182 -$3 31% 

Level 3 -$35 -$25 -$22 -$18 -$15 -$11 -$7 -$2 $5 $15 $249 -$6 27% 

Level 4 -$46 -$34 -$30 -$25 -$21 -$16 -$11 -$4 $4 $17 $312 -$10 25% 

E-2 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

PTAC 9000 Level 1 PTAC 9000 Level 2 

PTAC 9000 Level 3 PTAC 9000 Level 4

Figure E.2.2 Cumulative Chart of LCC Savings for All Efficiency Levels: PTAC 9000 

E-3 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

Payback Period -Efficiency Level Tradeoff 

 Equipment= PTAC Standard Size - 9,000 Btu/h, Fuel Price=AEO 2008 - Reference Case, Start Year= 2012 

8.0 

8.5 

8.9 

7.6 

7.4 

7.6 

7.8 

8.0 

8.2 

8.4 

8.6 

8.8 

9.0 

Payback Period (Years) 

Payback Period-Efficiency Level Tradeoff

0 1 2 3 4 

Efficiency Level 

Figure E.2.3 Effect of the Change in Efficiency Level on Average Payback Period for 

PTAC 9000 (Level 0 is the Baseline Level). 

Table E.2.2 Summary of PBP Results for All Efficiency Levels: PTAC 9000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 1.1 3.9 5.6 6.9 7.5 8.2 9.5 12.2 14.9 22.7 100.0 13.0 1% 

Level 2 1.2 4.1 5.9 7.2 7.8 8.6 10.1 12.9 15.5 24.5 100.0 13.7 1% 

Level 3 1.2 4.3 6.2 7.7 8.3 9.1 10.6 13.7 16.6 26.3 100.0 14.5 1% 

Level 4 1.3 4.5 6.5 8.1 8.7 9.6 11.2 14.5 17.6 28.2 100.0 15.2 1% 

E-4 

 EERE-2007-BT-STD-0012 COMMENT 32
PTAC 9000, Level 1 PTAC 9000, Level 2 

PTAC 9000, Level 3 PTAC 9000, Level 4

Figure E.2.4 Cumulative Chart of PBP for All Efficiency Levels: PTAC 9000 

E-5 

 EERE-2007-BT-STD-0012 COMMENT 32
E.2.2 Standard Size PTACs with Cooling Capacity of 12,000 Btu/h (PTAC 12000) 

Figure E.2.5 shows the variation of the life-cycle cost with the installed cost for each of 

the efficiency levels considered for the analysis. The installed cost is the sum of the equipment 

price and the installation cost of the equipment and the former is the largest contributor to the 

increasing total installed cost as the efficiency level rises from Level 0 to Level 4 (with reduced 

energy consumption). The LCC results show that at the higher efficiency levels (Level 1 - 

Level 4), the lifetime operating cost has less of an impact on the LCC than the total installed 

cost. In other words, the decrease in lifetime operating costs (due to reduced electricity costs) is 

more than offset by the increase in total installed cost. As a result, the LCC at all efficiency 

levels is higher than that for the baseline efficiency level (Level 0) for this equipment. Table 

E.2.3 shows the national distribution of LCC savings above the baseline (Level 0) calculated for 

this equipment class for the higher efficiency levels [1-4]. Figure E.2.6 show this distribution of 

LCC savings graphically for each efficiency level analyzed. 

Figure E.2.7 shows the effect on payback period as the efficiency level changes from 

Level 0 (baseline) to Level 4, on a national averaged basis weighted over all building types, 

energy prices, sales taxes and installation costs. Table E.2.4 shows the national distribution of 

payback periods calculated for all efficiency levels as well as the average payback and the 

percent of units with a payback of less than 3 years. Figure E.2.8 show this distribution of 

payback results graphically for each efficiency level analyzed. 

E-6 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

Efficiency Level-LCC Tradeoff 

 Equipment= PTAC Standard Size - 12,000 Btu/h, Fuel Price=AEO 2008 - Reference Case, Start Year= 2012 

0 1 2 3 4 

Efficiency Level 

Figure E.2.5 Effect of the Change in Efficiency Level on Average Life-Cycle Cost for 

PTAC 12000 (Level 0 is the Baseline Level). 

Table E.2.3 Distribution of Life-Cycle Cost Savings from a Baseline Level (Level 0) by 

Efficiency Level for PTAC 12000 

$3,378 

$3,379 

$3,391 

$3,386 

$3,382 

$3,376 

$3,378 

$3,380 

$3,382 

$3,384 

$3,386 

$3,388 

$3,390 

$3,392 

Life Cycle Cost 

LCC-Efficiency Level Tradeoff

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$18 -$13 -$11 -$9 -$7 -$5 -$3 $0 $3 $10 $135 -$2 31% 

Level 2 -$30 -$22 -$19 -$16 -$13 -$9 -$6 -$1 $4 $14 $220 -$5 29% 

Level 3 -$44 -$33 -$29 -$24 -$20 -$15 -$10 -$4 $3 $17 $299 -$10 25% 

Level 4 -$59 -$44 -$40 -$34 -$29 -$23 -$16 -$9 $1 $18 $373 -$15 21% 

E-7 

 EERE-2007-BT-STD-0012 COMMENT 32
PTAC 12000 Level 1 PTAC 12000 Level 2 

PTAC 12000 Level 3 PTAC 12000 Level 4

Figure E.2.6 Cumulative Chart of LCC Savings for All Efficiency Levels: PTAC 12000 

E-8 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

 

Payback Period -Efficiency Level Tradeoff 

 Equipment= PTAC Standard Size - 12,000 Btu/h, Fuel Price=AEO 2008 - Reference Case, Start Year= 2012 

8.3 

8.9 

9.5 

7.9 

0.0 

1.0 

2.0 

3.0 

4.0 

5.0 

6.0 

7.0 

8.0 

9.0 

10.0 

Payback Period (Years) 

Payback Period-Efficiency Level Tradeoff

0 1 2 3 4 

Efficiency Level 

Figure E.2.7 Effect of the Change in Efficiency Level on Average Payback Period for 

PTAC 12000 (Level 0 is the Baseline Level). 

Table E.2.4 Summary of PBP Results for All Efficiency Levels: PTAC 12000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 1.2 4.0 5.8 7.2 7.8 8.6 9.7 12.3 15.1 22.9 100.0 13.1 1% 

Level 2 1.2 4.2 6.2 7.6 8.3 9.1 10.4 13.3 16.1 24.6 100.0 14.0 1% 

Level 3 1.3 4.5 6.6 8.1 8.8 9.6 11.0 14.2 17.3 26.7 100.0 14.9 1% 

Level 4 1.4 4.7 7.0 8.7 9.4 10.3 11.8 15.1 18.6 29.1 100.0 15.9 1% 

E-9 

 EERE-2007-BT-STD-0012 COMMENT 32
PTAC 12000, Level 1 PTAC 12000, Level 2 

PTAC 12000, Level 3 PTAC 12000, Level 4

Figure E.2.8 Cumulative Chart of PBP for All Efficiency Levels: PTAC 12000 

E-10 

 EERE-2007-BT-STD-0012 COMMENT 32
E.2.3 Standard Size PTHP with Cooling Capacity of 9000 Btu/h (PTHP 9000) 

Figure E.2.9 shows the variation of the life-cycle cost with the installed cost for each of 

the efficiency levels considered for the analysis. The installed cost is the sum of the equipment 

price and the installation cost of the equipment and the former is the largest contributor to the 

increasing total installed cost as the efficiency level rises from Level 0 to Level 4 (with reduced 

energy consumption). The LCC results show that at the higher efficiency levels (Level 1 - 

Level 4), the lifetime operating cost eventually has more of an impact on the LCC than the total 

installed cost. In other words, the decrease in lifetime operating costs (due to reduced electricity 

costs) offsets the increase in total installed cost. As a result, the LCC at the highest efficiency 

levels is lower than that for the baseline efficiency level (Level 0) for this equipment class. 

Table E.2.5 shows the national distribution of LCC savings above the baseline (Level 0) 

calculated for this equipment class for the higher efficiency levels [1-4]. Figure E.2.10 show this 

distribution of LCC savings graphically for each efficiency level analyzed. 

Figure E.2.11 shows the effect on payback period as the efficiency level changes from 

Level 0 (baseline) to Level 4, on a national averaged basis weighted over all building types, 

energy prices, sales taxes and installation costs. Table E.2.6 shows the national distribution of 

payback periods calculated for all efficiency levels as well as the average payback and the 

percent of units with a payback of less than 3 years. Figure E.2.12 show this distribution of 

payback results graphically for each efficiency level analyzed. 

E-11 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

Efficiency Level-LCC Tradeoff 

 Equipment= PTHP Standard Size - 9,000 Btu/h, Fuel Price=AEO 2008 - Reference Case, Start Year= 2012 

$3,805 

$3,792 

$3,775 

$3,772 

$3,781 

$3,770 

$3,775 

$3,780 

$3,785 

$3,790 

$3,795 

$3,800 

$3,805 

$3,810 

Life Cycle Cost 

LCC-Efficiency Level Tradeoff

0 1 2 3 4 

Efficiency Level 

Figure E.2.9 Effect of the Change in Efficiency Level on Average Life-Cycle Cost for 

PTHP 9000 (Level 0 is the Baseline Level). 

Table E.2.5 Distribution of Life-Cycle Cost Savings from a Baseline Level (Level 0) by 

Efficiency Level for PTHP 9000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$17 -$7 -$4 $1 $4 $8 $12 $16 $23 $33 $192 $11 71% 

Level 2 -$24 -$8 -$2 $5 $9 $16 $22 $29 $38 $55 $263 $20 77% 

Level 3 -$32 -$9 -$1 $7 $13 $22 $30 $40 $51 $73 $330 $28 79% 

Level 4 -$42 -$17 -$8 $1 $8 $18 $27 $37 $51 $76 $393 $24 71% 

E-12 

 EERE-2007-BT-STD-0012 COMMENT 32
PTHP 9000 Level 1 PTHP 9000 Level 2 

PTHP 9000 Level 3 PTHP 9000 Level 4

Figure E.2.10 Cumulative Chart of LCC Savings for All Efficiency Levels: PTHP 9000 

E-13 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

Payback Period -Efficiency Level Tradeoff 

Equipment= PTHP Standard Size - 9,000 Btu/h, Fuel Price=AEO 2008 - Reference Case, Start Year= 2012 

4.0 

4.0 

4.5 

4.4 

3.9 

4.0 

4.1 

4.2 

4.3 

4.4 

4.5 

4.6 

Payback Period (Years) 

Payback Period-Efficiency Level Tradeoff 

0 1 2 3 4 

Efficiency Level 

Figure E.2.11 Effect of the Change in Efficiency Level on Average Payback Period for 

PTHP 9000 (Level 0 is the Baseline Level). 

Table E.2.6 Summary of PBP Results for All Efficiency Levels: PTHP 9000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 1.1 3.0 3.2 3.7 4.6 5.0 5.2 5.6 6.1 7.6 12.8 5.1 11% 

Level 2 1.1 2.7 3.0 3.4 4.2 4.5 4.7 5.0 5.5 6.4 10.2 4.5 19% 

Level 3 1.2 2.7 3.0 3.4 4.1 4.4 4.7 4.9 5.4 6.2 9.5 4.4 19% 

Level 4 1.2 3.1 3.3 3.8 4.7 5.1 5.3 5.6 6.3 7.3 11.8 5.1 9% 

E-14 

 EERE-2007-BT-STD-0012 COMMENT 32
PTHP 9000, Level 1 PTHP 9000, Level 2 

PTHP 9000, Level 3 PTHP 9000, Level 4

Figure E.2.12 Cumulative Chart of PBP for All Efficiency Levels: PTHP 9000 

E-15 

 EERE-2007-BT-STD-0012 COMMENT 32
E.2.4 Standard Size PTHP with Cooling Capacity of 12,000 Btu/h (PTHP 12000) 

Figure E.2.13 shows the variation of the life-cycle cost for each of the efficiency levels 

considered for the analysis. The installed cost is the sum of the equipment price and the 

installation cost of the equipment and the former is the largest contributor to the increasing total 

installed cost as the efficiency level rises from Level 0 to Level 4 (with reduced energy 

consumption). The LCC results show that at the higher efficiency levels (Level 1 - Level 4), the 

lifetime operating cost has more of an impact on the LCC than the total installed cost. In other 

words, the decrease in lifetime operating costs (due to reduced electricity costs) more than 

offsets the increase in total installed cost. As a result, the LCC at all efficiency levels is lower 

than that for the baseline efficiency level (Level 0) for this equipment class. Table E.2.7 shows 

the national distribution of LCC savings above the baseline (Level 0) calculated for this 

equipment for the higher efficiency levels [1-4]. Figure E.2.14 show this distribution of LCC 

savings graphically for each efficiency level analyzed. 

Figure E.2.15 shows the effect on payback period as the efficiency level changes from 

Level 0 (baseline) to Level 4, on a national averaged basis weighted over all building types, 

energy prices, sales taxes and installation costs. Table E.2.8 shows the national distribution of 

payback periods calculated for all efficiency levels as well as the average payback and the 

percent of units with a payback of less than 3 years. Figure E.2.16 show this distribution of 

payback results graphically for each efficiency level analyzed. 

E-16 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

 

Efficiency Level-LCC Tradeoff 

 Equipment= PTHP Standard Size - 12,000 Btu/h, Fuel Price=AEO 2008 - Reference Case, Start Year= 2012 

$4,340 

$4,324 

$4,321 

$4,315 

$4,310 $4,312 

$4,315 

$4,320 

$4,325 

$4,330 

$4,335 

$4,340 

$4,345 

Life Cycle Cost 

LCC-Efficiency Level Tradeoff

0 1 2 3 4 

Efficiency Level 

Figure E.2.13 Effect of the Change in Efficiency Level on Average Life-Cycle Cost for 

PTHP 12000 (Level 0 is the Baseline Level). 

Table E.2.7 Distribution of Life-Cycle Cost Savings from a Baseline Level (Level 0) by 

Efficiency Level for PTHP 12000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$22 -$9 -$5 $0 $4 $10 $15 $20 $28 $40 $233 $13 71% 

Level 2 -$31 -$10 -$3 $5 $11 $19 $26 $34 $46 $66 $318 $24 77% 

Level 3 -$43 -$20 -$12 -$3 $4 $13 $23 $32 $46 $69 $397 $20 67% 

Level 4 -$56 -$31 -$21 -$12 -$3 $6 $17 $28 $44 $70 $471 $14 57% 

E-17 

 EERE-2007-BT-STD-0012 COMMENT 32
PTHP 12000 Level 1 PTHP 12000 Level 2 

PTHP 12000 Level 3 PTHP 12000 Level 4

Figure E.2.14 Cumulative Chart of LCC Savings for All Efficiency Levels: PTHP 12000 

E-18 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

Payback Period -Efficiency Level Tradeoff 

 Equipment= PTHP Standard Size - 12,000 Btu/h, Fuel Price=AEO 2008 - Reference Case, Start Year= 2012 

4.1 

4.9 

5.5 

4.5 

0.0 

1.0 

2.0 

3.0 

4.0 

5.0 

6.0 

Payback Period (Years) 

Payback Period-Efficiency Level Tradeoff

0 1 2 3 4 

Efficiency Level 

Figure E.2.15 Effect of the Change in Efficiency Level on Average Payback Period for 

PTHP 12000 (Level 0 is the Baseline Level). 

Table E.2.8 Summary of PBP Results for All Efficiency Levels: PTHP 12000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 1.1 3.0 3.3 3.7 4.7 5.1 5.3 5.7 6.2 7.7 12.8 5.1 9% 

Level 2 1.2 2.8 3.1 3.5 4.3 4.6 4.8 5.1 5.6 6.5 10.3 4.6 17% 

Level 3 1.2 3.2 3.5 4.0 5.1 5.5 5.7 6.1 6.7 8.0 13.4 5.5 3% 

Level 4 1.3 3.7 4.0 4.5 5.8 6.2 6.6 7.0 7.7 9.6 16.7 6.4 1% 

E-19 

 EERE-2007-BT-STD-0012 COMMENT 32
PTHP 12000, Level 1 PTHP 12000, Level 2 

PTHP 12000, Level 3 PTHP 12000, Level 4

Figure E.2.16 Cumulative Chart of PBP for All Efficiency Levels: PTHP 12000 

E-20 

 EERE-2007-BT-STD-0012 COMMENT 32
E.2.5 Non-Standard Size PTAC with Cooling Capacity of 11,000 Btu/h (PTAC 11000) 

Figure E.2.17 shows the variation of the life-cycle cost with the installed cost for each of 

the efficiency levels considered for the analysis. The installed cost is the sum of the equipment 

price and the installation cost of the equipment and the former is the largest contributor to the 

increasing total installed cost as the efficiency level rises from Level 0 to Level 3 (with reduced 

energy consumption). The LCC results show that at the higher efficiency levels (Level 1 - 

Level 3), the lifetime operating cost has more of an impact on the LCC than the total installed 

cost. In other words, the decrease in lifetime operating costs (due to reduced electricity costs) 

offsets the increase in total installed cost. As a result, the LCC at all efficiency levels is lower 

than that for the baseline efficiency level (Level 0) for this equipment class. Table E.2.9 shows 

the national distribution of LCC savings above the baseline (Level 0) calculated for this 

equipment for the higher efficiency levels [1-3]. Figure E.2.18 show this distribution of LCC 

savings graphically for each efficiency level analyzed. 

Figure E.2.19 shows the effect on payback period as the efficiency level changes from 

Level 0 (baseline) to Level 3, on a national averaged basis weighted over all building types, 

energy prices, sales taxes and installation costs. Table E.2.10 shows the national distribution of 

payback periods calculated for all efficiency levels as well as the average payback and the 

percent of units with a payback of less than 3 years. Figure E.2.20 show this distribution of 

payback results graphically for each efficiency level analyzed. 

E-21 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

 

Efficiency Level-LCC Tradeoff 

Equipment= PTHP Standard Size - 12,000 Btu/h, Fuel Price=AEO 2008 - Reference Case, Start Year= 2012 

$4,340 

$4,324 

$4,315 

$4,310 $4,312 

$4,315 

$4,320 

$4,325 

$4,330 

$4,335 

$4,340 

$4,345 

Life Cycle Cost 

LCC-Efficiency Level Tradeoff 

0 1 2 3 

Efficiency Level 

Figure E.2.17 Effect of the Change in Efficiency Level on Average Life-Cycle Cost for 

PTAC 11000 (Level 0 is the Baseline Level). 

Table E.2.9 Distribution of Life-Cycle Cost Savings from a Baseline Level (Level 0) by 

Efficiency Level for PTAC 11000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$21 -$7 -$1 $6 $12 $19 $27 $36 $46 $65 $449 $26 79% 

Level 2 -$33 -$15 -$6 $2 $11 $20 $30 $42 $56 $81 $593 $30 73% 

Level 3 -$46 -$25 -$14 -$4 $7 $18 $31 $45 $62 $93 $725 $31 67% 

E-22 

 EERE-2007-BT-STD-0012 COMMENT 32
PTAC 11000 Level 1 PTAC 11000 Level 2 

PTAC 11000 Level 3

Figure E.2.18 Cumulative Chart of LCC Savings for All Efficiency Levels: PTAC 11000 

E-23 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

Payback Period -Efficiency Level Tradeoff 

 Equipment= PTHP Standard Size - 12,000 Btu/h, Fuel Price=AEO 2008 - Reference Case, Start Year= 2012 

4.1 

4.9 

4.5 

4.0 

4.1 

4.2 

4.3 

4.4 

4.5 

4.6 

4.7 

4.8 

4.9 

Payback Period (Years) 

Payback Period-Efficiency Level Tradeoff

0 1 2 3 

Efficiency Level 

Figure E.2.19 Effect of the Change in Efficiency Level on Average P

PTAC 11000 (Level 0 is the Baseline Level). 

ayback Period for 

Table E.2.10 Summary of PBP Results for All Efficiency Levels: PTAC 11000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 0.5 1.7 2.4 2.9 3.1 3.4 3.9 4.7 5.6 7.8 37.8 4.4 35% 

Level 2 0.6 2.0 2.8 3.3 3.6 3.9 4.5 5.5 6.5 9.1 48.4 5.1 21% 

Level 3 0.7 2.2 3.2 3.8 4.1 4.4 5.1 6.3 7.5 10.5 65.5 5.9 19% 

E-24 

 EERE-2007-BT-STD-0012 COMMENT 32
PTAC 11000, Level 1 PTAC 11000, Level 2 

PTAC 11000, Level 3

Figure E.2.20 Cumulative Chart of PBP for All Efficiency Levels: PTAC 11000 

E-25 

 EERE-2007-BT-STD-0012 COMMENT 32
E.2.6 Non-Standard Size PTHP with Cooling Capacity of 11,000 Btu/h (PTHP 11000) 

Figure E.2.21 shows the variation of the life-cycle cost for each of the efficiency levels 

considered for the analysis. The installed cost is the sum of the equipment price and the 

installation cost of the equipment and the former is the largest contributor to the increasing total 

installed cost as the efficiency level rises from Level 0 to Level 3 (with reduced energy 

consumption). The LCC results show that at the higher efficiency levels (Level 1 - Level 3), the 

lifetime operating cost has more of an impact on the LCC than the total installed cost. In other 

words, the decrease in lifetime operating costs (due to reduced electricity costs) offsets the 

increase in total installed cost. As a result, the LCC at all efficiency levels is lower than that for 

the baseline efficiency level (Level 0) for this equipment class. Table E.2.11 shows the national 

distribution of LCC savings above the baseline (Level 0) calculated for this equipment for the 

higher efficiency levels [1-3]. Figure E.2.22 show this distribution of LCC savings graphically 

for each efficiency level analyzed. 

Figure E.2.23 shows the effect on payback period as the efficiency level changes from 

Level 0 (baseline) to Level 3, on a national averaged basis weighted over all building types, 

energy prices, sales taxes and installation costs. Table E.2.12 shows the national distribution of 

payback periods calculated for all efficiency levels as well as the average payback and the 

percent of units with a payback of less than 3 years. Figure E.2.24 show this distribution of 

payback results graphically for each efficiency level analyzed. 

E-26 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

Efficiency Level-LCC Tradeoff 

 Equipment= PTAC Non-Standard Size - 11,000 Btu/h, Fuel Price=AEO 2008 - Reference Case, Start Year= 2012 

Life Cycle Cost 

$3,745 

$3,743 $3,740 

$3,735 

$3,730 

$3,725 

$3,720 

$3,715 

$3,710 

$3,708 $3,705 

0 1 2 3

Efficiency Level 

$3,713 

$3,709 

LCC-Efficiency Level Tradeoff

Figure E.2.21 Effect of the Change in Efficiency Level on Average Life-Cycle Cost for 

PTHP 11000 (Level 0 is the Baseline Level). 

Table E.2.11 Distribution of Life-Cycle Cost Savings from a Baseline Level (Level 0) by 

Efficiency Level for PTHP 11000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$12 $14 $24 $35 $43 $55 $66 $78 $93 $120 $513 $62 97% 

Level 2 -$24 $8 $19 $33 $43 $56 $71 $85 $103 $136 $657 $66 95% 

Level 3 -$33 $7 $22 $39 $51 $69 $86 $104 $127 $168 $789 $80 93% 

E-27 

 EERE-2007-BT-STD-0012 COMMENT 32
PTHP 11000 Level 1 PTHP 11000 Level 2 

PTHP 11000 Level 3

Figure E.2.22 Cumulative Chart of LCC Savings for All Efficiency Levels: PTHP 11000 

E-28 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

Payback Period -Efficiency Level Tradeoff 

Equipment= PTAC Non-Standard Size - 11,000 Btu/h, Fuel Price=AEO 2008 - Reference Case, Start Year= 2012 

3.7 

4.2 

3.2 

0.0 

0.5 

1.0 

1.5 

2.0 

2.5 

3.0 

3.5 

4.0 

4.5 

Payback Period (Years) 

Payback Period-Efficiency Level Tradeoff 

0 1 2 3 

Efficiency Level 

Figure E.2.23 Effect of the Change in Efficiency Level on Average P

PTHP 11000 (Level 0 is the Baseline Level). 

ayback Period for 

Table E.2.12 Summary of PBP Results for All Efficiency Levels: PTHP 11000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 0.5 1.3 1.4 1.6 2.0 2.1 2.2 2.4 2.6 3.1 5.1 2.2 87% 

Level 2 0.6 1.6 1.8 2.0 2.5 2.7 2.8 3.1 3.4 4.1 7.0 2.8 67% 

Level 3 0.7 1.8 1.9 2.2 2.7 2.9 3.1 3.3 3.6 4.3 7.2 3.0 55% 

E-29 

 EERE-2007-BT-STD-0012 COMMENT 32
PTHP 11000, Level 1 PTHP 11000, Level 2 

PTHP 11000, Level 3

Figure E.2.24 Cumulative Chart of PBP for All Efficiency Levels: PTHP 11000 

E-30 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

 

 

 

 

 

 

E.3 SENSITIVITY OF LCC RESULTS TO ELECTRICITY PRICE FORECAST 

This section contains detailed output from the Life-Cycle Cost (LCC) sensitivity analysis 

to the electricity price escalation rates reported in chapter 8. These analyses were carried out 

using the LCC spreadsheet with the aggregated results reported in terms of national average LCC 

savings for each of the equipment classes at each efficiency level. See Chapter 8 for a further 

explanation of the sensitivity analysis and results. 

Table E.3.1 through Table E.3.6 show the sensitivity of LCC Savings assumed baseline 

efficiency level, for a baseline at Level 0 and efficiency Levels 1 through Level 4 (standard –size 

equipment) and Levels 1 through 3 (non-standard) for the low electricity rates contained in AEO 

2008. Table E.3.7 through Table E.3.12 show the corresponding detailed impact for high 

electricity price forecast in AEO 2008. The level providing maximum LCC savings is unaffected 

by selection of electricity price escalation rate level, but the magnitude of LCC savings is 

reduced for lower prices and increased for higher ones. Payback period is calculated based on 

first year energy savings and thus is insensitive to fuel escalation rate scenarios after the first 

year. However, the payback period is lengthened from about a month to slightly more than a 

year by the low electricity price forecast for 2012 and shortened about one to eleven months by 

the high price forecast, as shown in Table E.3.13 through Table E.3.24. 

Table E.3.1 Summary of LCC Results: Low Electricity Price Forecast, PTAC 9000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$14 -$10 -$9 -$7 -$6 -$4 -$2 $0 $2 $7 $104 -$2 29% 

Level 2 -$24 -$18 -$15 -$13 -$11 -$8 -$5 -$1 $3 $10 $170 -$5 27% 

Level 3 -$35 -$26 -$23 -$19 -$16 -$12 -$9 -$4 $2 $12 $233 -$8 23% 

Level 4 -$47 -$35 -$31 -$27 -$23 -$18 -$13 -$7 $0 $13 $291 -$12 21% 

Table E.3.2 Summary of LCC Results: Low Electricity Price Forecast, PTAC 12000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$18 -$13 -$11 -$9 -$8 -$6 -$3 -$1 $2 $8 $126 -$3 27% 

Level 2 -$31 -$23 -$20 -$17 -$14 -$11 -$7 -$3 $2 $12 $206 -$7 23% 

Level 3 -$45 -$33 -$30 -$25 -$22 -$17 -$12 -$7 $0 $13 $279 -$12 21% 

Level 4 -$60 -$45 -$41 -$35 -$31 -$25 -$19 -$12 -$3 $13 $348 -$18 17% 

E-31 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table E.3.3 Summary of LCC Results: Low Electricity Price Forecast, PTHP 9000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$18 -$8 -$5 -$1 $2 $6 $10 $14 $20 $30 $180 $9 67% 

Level 2 -$25 -$9 -$3 $2 $7 $13 $19 $25 $34 $49 $246 $17 73% 

Level 3 -$33 -$11 -$3 $4 $10 $18 $25 $35 $45 $66 $309 $24 75% 

Level 4 -$43 -$19 -$11 -$2 $4 $13 $22 $32 $44 $68 $368 $20 67% 

Table E.3.4 Summary of LCC Results: Low Electricity Price Forecast, PTHP 12000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$22 -$10 -$6 -$1 $2 $7 $12 $17 $24 $36 $218 $11 67% 

Level 2 -$32 -$12 -$5 $2 $8 $15 $22 $30 $41 $59 $297 $20 73% 

Level 3 -$44 -$22 -$14 -$6 $1 $9 $18 $27 $40 $61 $371 $15 61% 

Level 4 -$57 -$33 -$24 -$16 -$7 $2 $12 $22 $37 $62 $440 $9 51% 

Table E.3.5 Summary of LCC Results: Low Electricity Price Forecast, PTAC 11000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$21 -$8 -$2 $4 $10 $16 $23 $32 $42 $59 $422 $23 77% 

Level 2 -$33 -$16 -$8 $0 $8 $16 $26 $38 $50 $74 $557 $26 69% 

Level 3 -$47 -$26 -$16 -$7 $3 $14 $26 $39 $55 $85 $681 $26 63% 

E-32 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

 

 

 

 

 

 

 

 

 

Table E.3.6 Summary of LCC Results: Low Electricity Price Forecast, PTHP 11000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$13 $12 $21 $31 $39 $50 $61 $71 $86 $111 $482 $57 97% 

Level 2 -$24 $5 $16 $29 $38 $51 $64 $78 $95 $126 $618 $60 93% 

Level 3 -$34 $3 $18 $33 $45 $62 $78 $94 $117 $155 $741 $72 93% 

Table E.3.7 Summary of LCC Results: High Electricity Price Forecast, PTAC 9000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$14 -$10 -$8 -$6 -$5 -$3 -$1 $1 $4 $9 $117 -$1 37% 

Level 2 -$24 -$17 -$14 -$12 -$9 -$6 -$2 $1 $6 $14 $192 -$2 33% 

Level 3 -$35 -$25 -$21 -$18 -$14 -$10 -$5 $0 $7 $18 $262 -$5 31% 

Level 4 -$46 -$34 -$29 -$24 -$20 -$14 -$9 -$2 $6 $21 $329 -$8 27% 

Table E.3.8 Summary of LCC Results: High Electricity Price Forecast, PTAC 12000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$17 -$12 -$10 -$8 -$6 -$4 -$2 $1 $5 $11 $142 -$1 35% 

Level 2 -$30 -$22 -$19 -$15 -$12 -$8 -$4 $0 $6 $17 $232 -$4 31% 

Level 3 -$44 -$32 -$28 -$23 -$19 -$14 -$8 -$2 $6 $20 $315 -$8 27% 

Level 4 -$59 -$44 -$38 -$32 -$27 -$21 -$14 -$6 $4 $22 $393 -$13 23% 

E-33 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table E.3.9 Summary of LCC Results: High Electricity Price Forecast, PTHP 9000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$17 -$7 -$2 $2 $5 $9 $14 $18 $25 $36 $202 $13 73% 

Level 2 -$24 -$6 $0 $7 $11 $18 $25 $32 $41 $59 $277 $23 81% 

Level 3 -$32 -$7 $1 $10 $16 $25 $34 $44 $56 $79 $348 $31 81% 

Level 4 -$41 -$15 -$6 $4 $11 $21 $31 $42 $56 $82 $415 $28 75% 

Table E.3.10 Summary of LCC Results: High Electricity Price Forecast, PTHP 12000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$21 -$8 -$3 $2 $6 $12 $17 $22 $31 $44 $245 $15 73% 

Level 2 -$30 -$8 -$1 $7 $14 $22 $30 $38 $50 $71 $335 $27 79% 

Level 3 -$42 -$18 -$9 $0 $7 $17 $27 $37 $51 $75 $418 $24 69% 

Level 4 -$55 -$29 -$19 -$9 $0 $10 $21 $33 $50 $77 $497 $18 59% 

Table E.3.11 Summary of LCC Results: High Electricity Price Forecast, PTAC 11000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$21 -$6 $0 $7 $14 $21 $29 $39 $49 $69 $471 $29 81% 

Level 2 -$32 -$13 -$4 $4 $13 $23 $34 $46 $61 $87 $623 $34 75% 

Level 3 -$46 -$23 -$12 -$1 $10 $22 $35 $50 $68 $100 $762 $35 69% 

E-34 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

 

 

 

 

 

 

 

Table E.3.12 Summary of LCC Results: High Electricity Price Forecast, PTHP 11000 

Efficiency 

Decrease in LCC from Baseline Efficiency (Level 0) Shown by Percentiles of the Distribution of Results 

(2006$) 

Mean 

Savings 

Percent 

of 

Units 

with 

LCC 

Savings 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 -$12 $16 $26 $38 $47 $59 $71 $83 $99 $127 $538 $66 97% 

Level 2 -$23 $10 $22 $37 $47 $61 $76 $92 $110 $144 $690 $71 95% 

Level 3 -$32 $10 $26 $43 $57 $75 $93 $111 $136 $179 $829 $87 95% 

Table E.3.13 Summary of PBP Results: Low Electricity Price Forecast, PTAC 9000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 1.2 4.1 6.0 7.4 7.9 8.7 10.2 13.1 16.0 24.6 100.0 13.9 1% 

Level 2 1.2 4.3 6.2 7.7 8.3 9.2 10.7 13.8 16.7 26.6 100.0 14.6 1% 

Level 3 1.3 4.5 6.6 8.2 8.8 9.7 11.3 14.6 17.8 28.7 100.0 15.4 1% 

Level 4 1.4 4.7 6.9 8.6 9.3 10.2 11.9 15.5 18.9 30.8 100.0 16.3 1% 

Table E.3.14 Summary of PBP Results: Low Electricity Price Forecast, PTAC 12000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 1.2 4.2 6.2 7.6 8.3 9.1 10.4 13.2 16.2 24.7 100.0 14.0 1% 

Level 2 1.3 4.4 6.5 8.1 8.8 9.6 11.0 14.2 17.2 26.6 100.0 14.9 1% 

Level 3 1.4 4.7 6.9 8.6 9.4 10.3 11.7 15.2 18.5 28.9 100.0 15.8 1% 

Level 4 1.4 5.0 7.4 9.2 10.0 11.0 12.5 16.2 19.9 31.6 100.0 17.0 1% 

E-35 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

 

 

 

 

Table E.3.15 Summary of PBP Results: Low Electricity Price Forecast, PTHP 9000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 1.1 3.1 3.4 3.9 4.9 5.3 5.5 5.9 6.5 8.1 13.7 5.4 5% 

Level 2 1.2 2.9 3.2 3.6 4.5 4.8 5.0 5.3 5.9 6.8 10.8 4.8 15% 

Level 3 1.2 2.8 3.2 3.6 4.4 4.7 5.0 5.2 5.8 6.6 10.1 4.7 15% 

Level 4 1.3 3.3 3.5 4.0 5.0 5.4 5.7 6.0 6.6 7.8 12.6 5.4 5% 

Table E.3.16 Summary of PBP Results: Low Electricity Price Forecast, PTHP 12000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 1.2 3.2 3.5 3.9 5.0 5.3 5.6 6.0 6.6 8.1 13.7 5.4 5% 

Level 2 1.2 3.0 3.2 3.7 4.6 4.9 5.1 5.4 6.0 6.9 11.0 4.9 11% 

Level 3 1.3 3.4 3.7 4.2 5.4 5.8 6.1 6.4 7.1 8.5 14.3 5.8 1% 

Level 4 1.4 3.9 4.2 4.8 6.1 6.6 6.9 7.4 8.2 10.2 17.9 6.7 1% 

Table E.3.17 Summary of PBP Results: Low Electricity Price Forecast, PTAC 11000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 0.6 1.8 2.6 3.1 3.3 3.5 4.1 5.0 5.9 8.2 41.5 4.7 27% 

Level 2 0.6 2.1 2.9 3.5 3.8 4.1 4.7 5.8 6.9 9.6 53.7 5.4 21% 

Level 3 0.7 2.4 3.4 4.1 4.3 4.7 5.4 6.7 7.9 11.2 74.1 6.3 17% 

E-36 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

 

 

 

 

 

 

Table E.3.18 Summary of PBP Results: Low Electricity Price Forecast, PTHP 11000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 0.5 1.4 1.5 1.7 2.1 2.3 2.4 2.5 2.8 3.3 5.4 2.3 85% 

Level 2 0.6 1.7 1.9 2.1 2.6 2.8 3.0 3.2 3.6 4.3 7.4 2.9 61% 

Level 3 0.7 1.9 2.0 2.3 2.9 3.1 3.2 3.5 3.8 4.6 7.6 3.1 47% 

Table E.3.19 Summary of PBP Results: High Electricity Price Forecast, PTAC 9000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 1.1 3.7 5.3 6.5 7.0 7.7 9.0 11.4 13.9 21.0 100.0 12.1 3% 

Level 2 1.1 3.8 5.6 6.8 7.4 8.1 9.5 12.1 14.5 22.6 100.0 12.9 1% 

Level 3 1.2 4.0 5.8 7.3 7.8 8.6 9.9 12.8 15.5 24.3 100.0 13.6 1% 

Level 4 1.2 4.2 6.1 7.6 8.2 9.0 10.5 13.6 16.4 25.9 100.0 14.3 1% 

Table E.3.20 Summary of PBP Results: High Electricity Price Forecast, PTAC 12000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 1.1 3.8 5.5 6.8 7.4 8.1 9.2 11.6 14.2 21.4 100.0 12.2 1% 

Level 2 1.2 4.0 5.8 7.2 7.8 8.5 9.8 12.5 15.1 22.9 100.0 13.2 1% 

Level 3 1.2 4.2 6.2 7.6 8.3 9.1 10.4 13.3 16.2 24.7 100.0 14.0 1% 

Level 4 1.3 4.5 6.6 8.2 8.9 9.7 11.1 14.2 17.4 26.9 100.0 15.0 1% 

E-37 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

 

 

 

 

Table E.3.21 Summary of PBP Results: High Electricity Price Forecast, PTHP 9000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 1.0 2.8 3.0 3.5 4.4 4.7 5.0 5.3 5.8 7.2 12.0 4.8 17% 

Level 2 1.1 2.6 2.8 3.2 4.0 4.3 4.5 4.7 5.2 6.1 9.6 4.3 25% 

Level 3 1.1 2.5 2.9 3.2 3.9 4.2 4.4 4.7 5.1 5.9 9.0 4.2 25% 

Level 4 1.2 2.9 3.2 3.6 4.5 4.8 5.1 5.3 5.9 6.9 11.1 4.8 13% 

Table E.3.22 Summary of PBP Results: High Electricity Price Forecast, PTHP 12000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 1.0 2.9 3.1 3.5 4.5 4.8 5.0 5.4 5.9 7.2 12.1 4.8 17% 

Level 2 1.1 2.7 2.9 3.3 4.1 4.4 4.6 4.8 5.3 6.2 9.7 4.4 23% 

Level 3 1.2 3.1 3.3 3.8 4.8 5.2 5.4 5.8 6.3 7.6 12.6 5.2 7% 

Level 4 1.2 3.5 3.8 4.3 5.5 5.9 6.2 6.6 7.3 9.1 15.7 6.0 1% 

Table E.3.23 Summary of PBP Results: High Electricity Price Forecast, PTAC 11000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 0.5 1.6 2.3 2.8 2.9 3.2 3.7 4.5 5.3 7.3 34.7 4.2 43% 

Level 2 0.6 1.9 2.6 3.2 3.4 3.7 4.2 5.2 6.2 8.6 44.0 4.8 25% 

Level 3 0.7 2.1 3.0 3.6 3.9 4.2 4.9 6.0 7.1 9.9 58.6 5.6 19% 

E-38 

 EERE-2007-BT-STD-0012 COMMENT 32
 

 

Table E.3.24 Summary of PBP Results: High Electricity Price Forecast, PTAC 11000 

Efficiency 

Payback Period in Years Shown by Percentiles of the Distribution of Results Mean 

Percent 

Less 

than 3 

Years 

Payback 

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 

Level 1 0.5 1.3 1.4 1.5 1.9 2.0 2.1 2.3 2.5 3.0 4.8 2.1 91% 

Level 2 0.5 1.6 1.7 1.9 2.3 2.5 2.7 2.9 3.2 3.9 6.6 2.6 73% 

Level 3 0.6 1.7 1.8 2.1 2.6 2.8 2.9 3.1 3.4 4.1 6.8 2.8 65% 

E-39 

 EERE-2007-BT-STD-0012 COMMENT 32