6B -i 

### APPENDIX 6B. DETAILED LIFE

- CYCLE COST AND PAYBACK PERIOD

ANALYSIS RESULTS

TABLE OF CONTENTS

6B.1 INTRODUCTION .........................................................................................................6B-1

6B.2 LIFE

- CYCLE COST AND PAYBACK PERIOD RESULTS ......................................6B-2

6B.2.1 Life -Cycle Cost Results for Air Cooled <65 kBtu.............................................6B-2

6B.2.2 Life -Cycle Cost Results for Air Cooled 65

– 240 kBtu ......................................6B-4

6B.2.3 Life -Cycle Cost Results for Air Cooled > 240 kBtu..........................................6B-6

6B.2.4 Life -Cycle Cost Results for Water Cooled <65 kBtu ........................................6B-8

6B.2.5 Life

- Cycle Cost Results for Wat er Cooled 65–240 kBtu ................................6B-10

6B.2.6 Life -Cycle Cost Results for Water Cooled > 240 kBtu ...................................6B-12

6B.2.7 Life -Cycle Cost Results for Water Cooled w/ FE <65 kBtu ...........................6B-14

6B.2.8 Life

- Cycle Cost Results for Water Cooled w/ FE 65 –240 kBtu ......................6B-16

6B.2.9 Life

- Cycle Cost Res ults for Water Cooled w/ FE > 240 kBtu ........................6B-18

6B.2.10 Life -Cycle Cost Results for Glycol Cooled <65 kBtu ...................................6B-20

6B.2.11 Life -Cycle Cost Results for Glycol Cooled 65–240 kBtu ..............................6B-22

6B.2.12 Life -Cycle Cost Results for Glycol Cooled > 240 kBtu ................................6B-24

6B.2.13 Life -Cycle Cost Results for Glycol Cooled w/ FE <65 kBtu .........................6B-26

6B.2.14 Life -Cycle Cost Results for Glycol Cooled w/ FE 65–240 kBtu ...................6B-28

6B.2.15 Life -Cycle Cost Results for Glycol Cooled w/ FE > 240 kBtu ......................6B-30

LIST OF TABLES

Table 6B.2.1 LCC Results for Air Cooled <65 kBtu .................................................................6B-2

Table 6B.2.2 LCC Results for Air Cooled 65– 240 kBtu ...........................................................6B-4

Table 6B.2.3 LCC Results for Air Cooled > 240 kBtu ..............................................................6B-6

Table 6B.2.4 LCC Results for Water Cooled <65 kBtu ............................................................6B-8

Table 6B.2.5 LCC Results for Water Cooled 65–240 kBtu ....................................................6B-10

Table 6B.2.6 LCC Results for Water Cooled > 240 kBtu .......................................................6B-12

Table 6B.2.7 LCC Results for Water Cooled w/ FE <65 kBtu................................................6B-14

Table 6B.2.8 LCC Results for Water Cooled w/ FE 65–240 kBtu ..........................................6B-16

Table 6B.2.9 LCC Results for Water Cooled w/ FE > 240 kBtu.............................................6B-18 Table 6B.2.10 LCC Results for Glycol Cooled <65 kBtu .......................................................6B-20

Table 6B .2.11 LCC Results for Glycol Cooled 65–240 kBtu .................................................6B-22 Table 6B.2.12 LCC Results for Glycol Cooled > 240 kBtu ....................................................6B-24 Table 6B.2.13 LCC Results for Glycol Cooled w/ FE <65 kBtu. ...........................................6B-26 Table 6B.2.14 LCC Results for Glycol Cooled w/ FE 65–240 kBtu .......................................6B-28 Table 6B.2.15 LCC Results for Glycol Cooled w/ FE > 240 kBtu .........................................6B-306B

- ii 

### LIST OF FIGURES

Figure 6B.2.1 LCC Results for Air Cooled <65 kBtu ...............................................................6B-2 Figure 6B.2.2 PBP Results for Air Cooled <65 kBtu ................................................................6B-3 Figure 6B.2.3 LCC Results for Air Cooled 65–240 kBtu..........................................................6B-4 Figure 6B.2.4 PBP Results for Air Cooled 65–240 kBtu ..........................................................6B-5 Figure 6B.2.5 LCC Results for Air Cooled > 240 kBtu ............................................................6B-6 Figu re 6B.2.6 PBP Results for Air Cooled > 240 kBtu .............................................................6B-7 Figure 6B.2.7 LCC Results for Water Cooled <65 kBtu ...........................................................6B-8 Figure 6B.2.8 PBP Results for Water Cooled <65 kBtu ...........................................................6B-9 Figure 6B.2.9 LCC Results for Water Cooled 65–240 kBtu ...................................................6B-10 Figure 6B.2.10 PBP Results for Water Cooled 65–240 kBtu ..................................................6B-11 Figure 6B.2.11 LCC Results for Water Cooled > 240 kBtu ....................................................6B-12 Figure 6B.2.12 PBP Results for Water Cooled > 240 kBtu ....................................................6B-13 Figure 6B.2.13 LCC Results for Water Cooled w/ FE <65 kBtu ............................................6B-14 Figure 6B.2.14 PBP Results for Water Cooled w/ FE <65 kBtu .............................................6B-15 Figure 6B.2.15 LCC Results for Water Cooled w/ FE 65–240 kBtu ......................................6B-16 Figure 6B.2.16 PBP Results for Water Cooled w/ FE 65–240 kBtu .......................................6B-17 Figure 6B.2.17 LCC Results for Water Cooled w/ FE > 240 kBtu .........................................6B-18 Figure 6B.2.18 PBP Results for Water Cooled w/ FE > 240 kBtu ..........................................6B-19 Figure 6B.2.19 LCC Results for Glycol Cooled <65 kBtu ......................................................6B-20 Figure 6B.2.20 PBP Results for Glycol Cooled <65 kBtu ......................................................6B-21 Figure 6B.2.21 LCC Results for Glycol Cooled 65–240 kBtu ................................................6B-22 Figure 6B.2.22 PBP Results for Glycol Cooled 65–240 kBtu .................................................6B-23 Figure 6B.2.23 LCC Results for Glycol Cooled > 240 kBtu ...................................................6B-24 Figure 6B.2.24 PBP Results for Glycol Cooled > 240 kBtu ...................................................6B-25 Figure 6B.2.25 LCC Results for Glycol Cooled w/ FE <65 kBtu ...........................................6B-26 Figure 6B.2.26 PBP Results for Glycol Cooled w/ FE <65 kBtu ............................................6B-27 Figure 6B.2.27 LCC Results for Glycol Cooled w/ FE 65–240 kBtu .....................................6B-28 Figure 6B.2.28 PBP Results for Glycol Cooled w/ FE 65–240 kBtu ......................................6B-29 Figure 6B.2.29 LCC Results for Glycol Cooled w/ FE > 240 kBtu ........................................6B-30 Figure 6B.2.30 PBP Res ults for Glycol Cooled w/ FE > 240 kBtu .........................................6B-316B -1 

### APPENDIX 6 B. DETAILED LIFE

- CYCLE COST AND PAYBACK PERIOD

ANALYSIS RESULTS

6B.1 INTRODUCTION

This appendix contains detailed output from the life- cycle cost (LCC) analysis for computer room air-conditioning (CRAC) equipment as developed using the LCC spreadsheet.

LCC s and payback periods (PBPs) are presented for each of the 15 equipment classes at each efficiency level. See chapter 6 of the TSD for an explanation of the LCC spreadsheet.

LCC savings output obtained from the LCC analysis are in the form of distributions. LCC savings distributions were generated by perfor ming 5,000 separate simulations using the LCC spreadsheet, and allowing the spreadsheet to select values for numerous inputs given probability distributions for each input. Given the results of the LCC model simulations, for each equipment

class , the U.S. Department of Energy (DOE) calculated summary statistics at each effici e ncy level. These include average values for LCC, product installation costs and operating costs; average LCC savings; the percentage of customers who: (1) receive benefits in the form of lower LCC results; (2) are not affected by the standards; or (3) experience a cost in the form of increased LCC from equipment ownership; and finally, median payback periods for the efficiency investments . Results of t he LCC and accompanying PBP analys es are shown in the tables in this appendix.

Also included in this appendix are two graphical presentations for each of the LCC and PBP results. One plots LCC savings distributions for all equipment classes analyzed. The figures

illustrate the mean and med ian values on the plot with the help of red and blue markers, respectively. Additionally, the mean and median values are surrounded by rectangular boxes used to represent the 25 th and 75 th percentile values. The lower edge of the elongated rectangle represents the 25 th percentile, which means that 25 percent of the customers will experience LCC savings below the value represented by the bottom of the rectangle if the standard were set

at the level in question. The upper edge of the elongated rectangle represents the 75 th percentile. Finally, each of the rectangles includes two “tails,” or two vertical black lines, extending downward to represent the 5 th percentile (lower end) and upward to represent the 95 th percentile (upper end).

The remainder of this appe ndix presents the tabular and graphical results for the 15 equipment classes analyzed for the CRAC equipment rulemaking.6B -2 

### 6B.2 L IFE -C YCLE C OST AND P AY B ACK P ERIOD RESULTS

6B.2.1 Life -Cycle Cost Results for Air Cooled <65 kBtu

Table 6B.2.1 LCC Results for Air Cooled <65 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 11,982 32,039 44,021

— — — — —

1 13,471 29,822 43,294 809 3 89 8 8.5

2 15,222 28,140 43,362 212 17 68 14 10.2

3 17,281 26,756 44,037 (587) 65 23 12 12.1

4 19,700 25,623 45,323 (1,761) 90 5 6 14.5



### Figure 6B.2.1 LCC Results for Air Cooled <65 kBtu -4000 -3000 -2000 -1000 0 1000 2000 3000 4000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B -3 

### Figure 6B.2.2 PBP Results for Air Cooled <65 kBtu 0 5 10 15 20 25

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B -4 

### 6B.2.2 Life

- Cycle Cost Results for Air Cooled 65

**–** 240 kBtu

Table 6B.2.2 LCC Results for Air Cooled 65 –240 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 39,412 121,532 160,945

— — — — –

1 41,651 110,885 152,536 9,334 0 98 2 2.6

2 44,063 102,936 146,999 6,406 0 78 22 3.0

3 46,664 96,523 143,187 5,895 0 33 67 3.5

4 49,467 91,289 140,756 6,437 1 2 97 4.0



### Figure 6B.2.3 LCC Results for Air Cooled 65 –240 kBtu 0 5000 10000 15000 20000 25000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B -5 

### Figure 6B.2.4 PBP Results for Air Cooled 65 –240 kBtu 0 1 2 3 4 5 6 7

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B -6 

### 6B.2.3 Life -Cycle Cost Results for Air Cooled > 240 kBtu

Table 6B.2.3 LCC Results for Air Cooled > 240 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 56,879 286,458 343,337

— — — — —

1 60,102 258,403 318,505 27,198 0 98 2 1.4

2 63,577 237,739 301,316 19,713 0 78 22 1.7

3 67,322 221,326 288,648 19,071 0 33 67 1.9

4 71,358 208,099 279,458 22,152 0 2 98 2.2



### Figure 6B.2.5 LCC Results for Air Cooled > 240 kBtu 0 10000 20000 30000 40000 50000 60000 70000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B -7 

### Figure 6B.2.6 PBP Results for Air Cooled > 240 kBtu 0 1 1 2 2 3 3 4

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B -8 

### 6B.2.4 Life -Cycle Cost Results for Water Cooled <65 kBtu

Table 6B.2.4 LCC Results for Water Cooled <65 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 23,748 29,266 53,014

— — — — —

1 20,311 27,237 47,548 5,455 0 72 28 (21.5)

2 17,527 25,621 43,148 7,389 0 49 51 (20.9)

3 15,273 24,215 39,488 8,003 0 13 87 (20.3)

4 13,447 22,984 36,430 10,213 0 3 97 (19.7)



### Figure 6B.2.7 LCC Results for Water Cooled <65 kBtu 0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B -9 

### Figure 6B.2.8 PBP Results for Water Cooled <65 kBtu -35 -30 -25 -20 -15 -10

-5 0

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B

- 10 

### 6B.2.5 Life -Cycle Cost Results for Water Cooled 65–240 kBtu

Table 6B.2.5 LCC Results for Water Cooled 65–240 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 22,983 109,615 132,598

— — — — —

1 28,614 104,631 133,245 (672) 20 72 8 15.4

2 36,183 101,867 138,049 (5,118) 54 42 4 22.4

3 46,355 100,831 147,186 (12,844) 79 20 1 35.9

4 60,027 101,734 161,761 (25,278) 96 4 0 64.6



### Figure 6B.2.9 LCC Results for Water Cooled 65–240 kBtu -40000 -35000 -30000 -25000 -20000 -15000 -10000

-5000 0 5000 10000 15000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B

- 11 

### Figure 6B.2.10 PBP Results for Water Cooled 65–240 kBtu 0 50 100 150 200 250 300 350 400 450

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B

- 12 

### 6B.2.6 Life -Cycle Cost Results for Water Cooled > 240 kBtu

Table 6B.2.6 LCC Results for Water Cooled > 240 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 42,217 239,903 282,120

— — — — —

1 52,902 227,027 279,929 2,133 13 72 15 11.1

2 67,262 219,010 286,272 (5,292) 49 42 9 15.4

3 86,562 214,580 301,142 (18,696) 77 20 3 22.4

4 112,498 214,030 326,528 (40,964) 96 4 0 36.0



### Figure 6B.2.11 LCC Results for Water Cooled > 240 kBtu -70000 -60000 -50000 -40000 -30000 -20000 -10000 0 10000 20000 30000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B

- 13 

### Figure 6B.2.12 PBP Results for Water Cooled > 240 kBtu 0 20 40 60 80 100 120

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B

- 14 

### 6B.2.7 Life -Cycle Cost Results for Water Cooled w/ FE <65 kBtu

Table 6B.2.7 LCC Results for Water Cooled w/ FE <65 kBtu

Efficiency

Le vel Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 25,059 19,565 44,624

— — — — —

1 21,422 18,442 39,864 4,759 0 72 28 (40.3)

2 18,476 17,541 36,017 6,459 0 49 51 (39.3)

3 16,090 16,763 32,853 6,960 0 13 87 (38.3)

4 14,158 16,086 30,244 8,832 0 3 97 (37.3)



### Figure 6B.2.13 LCC Results for Water Cooled w/ FE <65 kBtu 0 2000 4000 6000 8000 10000 12000 14000 16000 18000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B

- 15 

### Figure 6B.2.14 PBP Results for Water Cooled w/ FE <65 kBtu -90 -80 -70 -60 -50 -40 -30 -20 -10

0

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B

- 16 

### 6B.2.8 Life -Cycle Cost Results for Water Cooled w/ FE 65–240 kBtu

Table 6B.2.8 LCC Results for Water Cooled w/ FE 65–240 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 24,169 73,475 97,645

— — — — —

1 30,129 71,967 102,095 (4,439) 25 72 3 41.5

2 38,138 71,937 110,075 (10,105) 58 42 0 34.1

3 48,903 73,290 122,193 (19,437) 80 20 0 (66.1)

4 63,372 76,298 139,669 (33,672) 96 4 0 (75.0)



### Figure 6B.2.15 LCC Results for Water Cooled w/ FE 65–240 kBtu -50000 -40000 -30000 -20000 -10000 0 10000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B

- 17 

### Figure 6B.2.16 PBP Results for Water Cooled w/ FE 65–240 kBtu -1500 -1000

-500 0 500 1000 1500

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B

- 18 

### 6B.2.9 Life -Cycle Cost Results for Water Cooled w/ FE > 240 kBtu

Table 6B.2.9 LCC Results for Water Cooled w/ FE > 240 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Li fe

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 44,469 157,416 201,886

— — — — —

1 55,777 152,704 208,481 (6,568) 25 72 3 30.5

2 70,973 151,095 222,068 (16,717) 57 42 1 40.7

3 91,397 152,234 243,631 (33,664) 80 20 0 43.1

4 118,844 156,568 275,412 (59,831) 96 4 0 (57.8)



### Figure 6B.2.17 LCC Results for Water Cooled w/ FE > 240 kBtu -90000 -80000 -70000 -60000 -50000 -40000 -30000 -20000 -10000 0 10000 20000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B

- 19 

### Figure 6B.2.18 PBP Results for Water Cooled w/ FE > 240 kBtu -1400 -1200 -1000

-800 -600 -400 -200 0 200 400 600 800

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B

- 20 

### 6B.2.10 Life -Cycle Cost Results for Glycol Cooled <65 kBtu

Table 6B.2.10 LCC Results for Glycol Cooled <65 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 24,353 29,757 54,110

— — — — —

1 20,916 27,643 48,559 5,540 0 72 28 (20.2)

2 18,132 25,962 44,094 7,501 0 49 51 (19.7)

3 15,878 24,509 40,387 8,117 0 13 87 (19.2)

4 14,052 23,241 37,293 10,350 0 3 97 (18.6)



### Figure 6B.2.19 LCC Results for Glycol Cooled <65 kBtu 0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B

- 21 

### Figure 6B.2.20 PBP Results for Glycol Cooled <65 kBtu -30 -25 -20 -15 -10

-5 0

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B

- 22 

### 6B.2.11 Life -Cycle Cost Results for Glycol Cooled 65–240 kBtu

Table 6B.2.11 LCC Results for Glycol Cooled 65–240 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 24,377 123,088 147,465

— — — — —

1 30,001 116,846 146,847 594 15 72 13 11.9

2 37,559 113,489 151,048 (3,901) 52 42 6 17.8

3 47,717 112,428 160,145 (11,921) 78 20 2 29.1

4 61,368 113,891 175,258 (25,047) 96 4 0 50.4



### Figure 6B.2.21 LCC Results for Glycol Cooled 65–240 kBtu -40000 -30000 -20000 -10000 0 10000 20000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B

- 23 

### Figure 6B.2.22 PBP Results for Glycol Cooled 65–240 kBtu -300 -200 -100 0 100 200 300 400 500

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B

- 24 

### 6B.2.12 Life -Cycle Cost Results for Glycol Cooled > 240 kBtu

Table 6B.2.12 LCC Results for Glycol Cooled > 240 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 42,217 266,128 308,345

— — — — —

1 52,902 250,960 303,862 4,429 10 72 18 9.2

2 67,262 242,073 309,336 (3,308) 44 42 14 13.2

3 86,562 238,019 324,581 (17,633) 76 20 4 20.2

4 112,498 239,151 351,650 (41,761) 95 4 1 35.1



### Figure 6B.2.23 LCC Results for Glycol Cooled > 240 kBtu -70000 -60000 -50000 -40000 -30000 -20000 -10000 0 10000 20000 30000 40000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B

- 25 

### Figure 6B.2.24 PBP Results for Glycol Cooled > 240 kBtu -20

0 20 40 60 80 100 120 140

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B

- 26 

### 6B.2.13 Life -Cycle Cost Results for Glycol Cooled w/ FE <65 kBtu

Table 6B.2.13 LCC Results for Glycol Cooled w/ FE <65 kBtu.

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 25,664 24,815 50,479

— — — — —

1 22,027 23,156 45,183 5,295 0 72 28 (28.2)

2 19,081 21,851 40,932 7,159 0 49 51 (27.6)

3 16,695 20,727 37,422 7,717 0 13 87 (26.9)

4 14,763 19,751 34,514 9,808 0 3 97 (26.3)



### Figure 6B.2.25 LCC Results for Glycol Cooled w/ FE <65 kBtu 0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B

- 27 

### Figure 6B.2.26 PBP Results for Glycol Cooled w/ FE <65 kBtu -45 -40 -35 -30 -25 -20 -15 -10

-5 0

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B

- 28 

### 6B.2.14 Life -Cycle Cost Results for Glycol Cooled w/ FE 65–240 kBtu

Table 6B.2.14 LCC Results for Glycol Cooled w/ FE 65–240 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 25,563 102,580 128,143

— — — — —

1 31,514 98,451 129,965 (1,802) 23 72 5 21.0

2 39,512 96,813 136,325 (7,200) 55 42 3 33.4

3 50,261 97,235 147,496 (16,388) 79 20 1 40.8

4 64,708 99,990 164,697 (30,857) 96 4 0 22.4



### Figure 6B.2.27 LCC Results for Glycol Cooled w/ FE 65–240 kBtu -50000 -40000 -30000 -20000 -10000 0 10000 20000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B

- 29 

### Figure 6B.2.28 PBP Results for Glycol Cooled w/ FE 65–240 kBtu -1000

-800 -600 -400 -200 0 200 400 600 800 1000

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National6B

- 30 

### 6B.2.15 Life -Cycle Cost Results for Glycol Cooled w/ FE > 240 kBtu

Table 6B.2.15 LCC Results for Glycol Cooled w/ FE > 240 kBtu

Efficiency

Level Life

- Cycle Cost
2011$ Life

- Cycle Cost Savings Payback

Period

years

Installed

Cost Discounted Operating

Cost LCC Average Savings
2011$ Percent of Households that Experience Median

Net Cost No Impact Net

Benefit

Baseline (ASHRAE) 44,469 220,328 264,797

— — — — —

1 55,777 209,958 265,735 (891) 21 72 7 15.4

2 70,973 204,967 275,941 (10,569) 53 42 5 23.3

3 91,397 204,265 295,662 (27,375) 77 20 3 32.3

4 118,844 208,311 327,156 (54,306) 95 4 1 34.8



### Figure 6B.2.29 LCC Results for Glycol Cooled w/ FE > 240 kBtu -100000

-80000 -60000 -40000 -20000 0 20000 40000

1 2 3 4Life-cycle Cost Savings($)

Efficiency Level Mean Median

`

National6B

- 31 

### Figure 6B.2.30 PBP Results for Glycol Cooled w/ FE > 240 kBtu -600 -500 -400 -300 -200 -100 0 100 200 300 400

1 2 3 4Payback Period (years)

Efficiency Level Mean Median National