# Residential WaterHeater 

# Efficiency Standards: Life-Cycle Cost Analysis Backup Materials JimLutz Lawrence Berkeley National Laboratory

11/9/98 LCC Analysis Backup Materials

# Change in Life-Cycle Cost Electric Water Heaters

Delta Life Cycle Cost of HeatTrap compared to Delta Life Cycle Cost of2"Jacket Insulation Delta Life Cycle Cost of2.5" Jacket Insulation Analytic Baseline (1998S) compared toAnalytic Baseline (1998$) comparedto AnalyticBaseline (1998$) 95% Benefit 5%Disadvantage 84% Benefit 16%Disadvantage 80%Benefit 20% Disadvantage 4000 _____ _.. 100% 3000 -__ 100% 2000 100% o 3000 I 2000 1500 

## ~2000 2 

# C C ooo .. 02000 50%%7 1 50% 000% 

### S 1000 7 

### jf | E | 

### 500 _ I 

## ~0

_______ u0 

### 0 

# itflH0% 0 l t o of. o- o o o o o o 0 o% . o.... o o. o o o o o o o o 0 o 00000000000 00000000000 00000000000ooooooooooo u o ur oo o o u~ror l ou or U~0iA0 LO V L 0 L 0

U ') LOC U.0 LO U> 00U UW) U) U'0)CD U' 0 L Delta LCC($) Delta LCC($) Delta LCC($)
Delta Life Cycle Cost of PlasticTank compared Delta Life Cycle Cost ofTank Bottom Insulation to AnalyticBaseline (1998$) compared toAnalytic Baseline (1998$) 69% Benefit 31% Disadvantage 59% Benefit 41% Disadvantage 1500 __.__ _ 100% 1500 - 100% 1000 % 1000 500 

### 2 50 50 0 

### n 0 0n- o0% 3 0 U Delta LCC($oo ) o) De LCC($) Delta LCC($) Delta LCC($) 

# 11/9/98 LCC Analysis Backup Materials 2

# Change inLife-Cycle Costs for Electric Water Heaters 200 100 o0 a, 0) C u) E I I 

## 1 -0 0 .............................................................. .............................. ............... 

# _i ro EU -200 ...............I........................... _................. „. "I...................................... .... . .............. -300 2 

## HeatTraps 2.5" insulation Insulate Tank Bottom 

# r Median; 75% 2" Insulation Plastic Tank 2 5 % 

## Design Options 11/9/98 LCC Analysis Backup Materials 3 

## 11/9/98 

# Analysis Materials

# Payback Electric Water Heaters
Payback Period ofHeat Trapconpared to Payback Period of2"Jacket Insulation Payback Periodof2.5" Jacket Insulation Analytic Baseline (Years) comparedto Analytic Baseline (Years) compared to Analytic Baseline (Years)

82%payback =3years 42% payback <=3years 32% payback<= 3years 6000 _ 100% 3000

- 100% 2000 _ ___..........100% I 4000. . 2000 1500 

### i 50% 50% 

## I 1000 50% 2000 E 1000 ei I^ Q* El E 

## E 500 E 1 1 0f 

## l HINJl

_ _ _ _ _ _ _ _ 0% . 0% 0 LO -- 3 O-- " aI Ir. (L a- c)3.) Ia. LO _ 0 C)U r.) F0- 0) 1,,. 0) Years Years Years Payback Period ofPlasticTank compared to Payback Period ofTank Bottom Insulation AnalyticBaseline (Years) compared to Analytic Baseline (Years)

12%payback<= 3years 8%payback < 3years 2000 100% 1500 100% 

### ^ 1500 

### nIoB* 1000 50% 50% . a) _ e r o Xr Na)500 

### 0 500 

### 2 50 0 

## 0% 0 

# .o qn, n.... 

### 00% /

- CO)t/ "- 0) '-" 0 t.L 0 M' L '-- - .OIo- "' ) r Years Years 

# 11/9/98 LCC Analysis Backup Materials 4

# Payback for ElectricWater Heaters 26 24 ................ |..................................|............................... .................... ........... ..... ............. ............... .................. 24 22 .......................................................................................................................................................................... 20 ......... ...... ......................... .. ..... ... ....................... ........ ........... .................................. .............. '....... . . 

## 18 T : : - } ol14 

## So 12 o 6 

## 10 0) 

## > 8 (U 

## 6 ............... ............................ ...... ..... ..................... . ........................................... - ........... a 6 2

. . -2 ______ . 

### 2.5% 

## Heat Traps 2.5" Insulation Insulate Tank Bottom I I Median; 75% 2" Insulation PlasticTank 25% Design Option 

# 11/9/98 LCC Analysis Backup Materials 5

# Change in Total Installed Cost Electric Water Heaters
DeltaTotal InstalledCost of Heat Trap Water DeltaTotal Installed Cost of 2"Jacket Insulation Delta Total nstalledCostof2.5" Jacket Heater compared toAnalytic Baseline (1998$) Water Heater compared toAnalytic Baseline InsulationWater Heater comparedto Analytic (1998$) Baseline (1998$) 10000 100% 0 0 0 r-ee -a-cce- % 4000 -- -.. uuumuuumu 100% 3000 100% C H 

# · 1 ~ 80% S! |5000 5)% 200050% 2000 0% 5 2000 60% 0 SO0% O o o20% 0 " 0 0 C 0 0 0 0 0 NCO0 ( DO 'C oN Cco C $

- - N N N Cn) Cn ' $ $

Delta Total InstalledCost ofPlasticTank Water DeltaTotal InstalledCost ofTank Bottom Heater comparedto AnalyticBaseline (1998$) InsulationWater Heater comparedtoAnalytic Baseline (1998$) 2500 ,------ 100% S 2000 . 

### o80% o 2000 ----- 100% % 1500 6- 1500 80% ' 1000 40% 60% 4 E 10 60% 0 500 20% 0o 0 1 00% no% P 500 E20% coNco N C> o NCO c o O O I N 0

· -- ," ('q (~1 (~ooo~tco N

Oo 0 o 0 0 $11/98 LC A s B p Ms 6$ 

# 11/9/98 LCC Analysis Backup Materials 6

# Change inTotal Installed Costs for Electric Water Heaters 280 260 240

. 220 co 

## o~ 1 80 ................................................. ................................. .......................... ....... .......................... .... ............ o 

### 200 ; CO 

# 180 . ....... 1 6 0 ..................... ........ .......... 

# '~ 140

4 0 .. ......... . ................ ........ .................... ........... 1202 

## 0 .. . -

## ... T 97.5% -20 , ,__ _ 

## 2.5% 

## HeatTraps 2.5" Insulation Insulate Tank Bottom I I Median; 75% 2" Insulation PlasticTank 25% Design Option 11/9/98 LCC Analysis Backup Materials 7

# Change in Operating Cost Electric Water Heaters

Delta Operating Cost in 2003 of HeatTrap Delta Operating Cost in2003of 2" Jacket Delta Operating Cost in2003 of2.5" Jacket compared toAnalytic Baseline (1998$) Insulation comparedtoAnalytic Baseline Insulation comparedtoAnalytic Baseline (1998S) (19985) 4000 __ 100% 80% 

# * 3000 ---- __ 100% 2500 ____ 100% 3 000 0 

# L > 8 80% |>. 2000 80% c * 60% s2000 .. 2 2 000 Cs 6 2 00% 1500 6 0% u .. „. 1|| c 0-40% mn . " o " 0 i E 40% 40% u 1000 100% 2 2 0 00 ^0%% E 20% U 500 20% O c 1500 I . 60%4 DO2NOO 200 . _DO'C O8%0 

### --- _.- - 0% 0 0% 0 .. 0% a~ntCCCT» go $ c a _ ', O CO t ,o~ ~ N o(9 ~ , , 

# co OC,4 $/Year $/Year $/Year

Delta Operating Cost in2003 ofPlasticTank DeltaOperating Cost in2003 ofTank Bottom

comparedtoAnalytic Baseline (1998$) Insulation comparedto Analytic Baseline (1998$) 2500 100% 2000 80% 2500 1-------__ - 00% c 1500 60% 2000 80% S 1500 60%

_ " 1000 40% 1000 U- 50 0 2 0 % 5 e 50 0 20% U. 500 20% 0:_ - 0% 0 -_....0%

CO O ^ N C 'IT w N CS 0o lONCOOO $/Year $/Year 

# 11/9/98 LCC Analysis Backup Materials 8

# Change inOperating Costs for ElectricWater Heaters 5 . .r. 

## -5

0

E 

## . ......... ...... ............................. .............. ................... I.. ......... ............................... ....... =)

# O -2 0 .... ..... ................. ......... ............................... .......................... ............... O -1 0 -.1 

## (31 -25

c ii 

## 4* -3 5 ............... ........................... ... .................... ....... ............. ............... .. ......... .........

CD C 

## .c -20 . ....... . , . . . . ........................... ........... ...................... .........
0 ' 

## 0 

# o- . _97.5% ^ -3 0 ............... .............................. ................................. . ........... ............................ ..............
45
. . 

## 2.5% 

## Heat Traps 2.5" Insulation Insulate Tank Bottom 

# II Median; 75% 2" Insulation PlasticTank 25% Design Option 11/9/98 LCC Analysis Backup Materials 9

# Change in Energy Consumption Electric Water Heaters
Delta Daily Energy Consumption ofHeat Trap Delta DailyEnergy Consumption of 2" Jacket Delta Daily Energy Consumption of 2.5" Jacket Water Heater comparedto Analytic Baseline Insulation Water Heater compared toAnalytic InsulationWater Heater compared toAnalytic (Btu/Day) Baseline (Btu/Day) Baseline (Btu/Day) 3000 100%3000 100% 3000 100% 

### |2000 .>i 

### 200 0 

### 0 20I o0 o o o oo1000 o . 21000 o 0 

### 1000 oo goo -O I t0000000000 0000000000 N0000000000 I 0 0 C0 (D0(0 0 0 0 0 0 0( 0 0 00o0 O O( 00 C (D t C C qC D co m9' 7 coC <D oiooT f o co O BTU/Day BTU/Day BTU/Day
Delta Daily Energy Consumption of PlasticTank Delta Daily Energy Consumption ofTank Bottom

Water Heater compared toAnalytic Baseline Insulation Water Heater comparedtoAnalytic (Btu/Day) Baseline (Btu/Day) 2000 - 100% 2000 100% e 1500 1500 

### S 1000 

# . 50% 

### S 1 5000 

### 50% 

## 5g 500 E O 500 | 0

# :_-:.-:- - 0% dIt 

### 0 

## .... 0% .t 

### n0BB |I|Mn| 0% co 00oo00 00oo00oo ooCo000 o00 CO 0 _ LO u0 8O C O §0 _o 0D t 0M M ~- iO ^ O O
- ~ oKoo ~ ~-.- co ~oirc , 

### ?-f7 BTU/Day BTU/Day 

# 11/9/98 LCC Analysis Backup Materials 10

# Change inDaily Energy Consumption for ElectricWater Heaters 500

>, 

## ^ -500 ....... ......... ............................. .............................. ............................ ........................ ............ 

# 8 ?l -2 0



# 0 0
.............. ............................ .............. 

# .. ......... .................. 

# -....... a,o -500 m r

- 

## -1000 

## .- E
E ~ -1500 .............. ................................................. . .... ........... c 0 a) C 

## -3000 -3500 O . . . 1 97.5% -4000 ,__ 2.5% 

## Heat Traps 2.5" Insulation Insulate Tank Bottom I I Median; 75% 2" Insulation PlasticTank 25% Design Option 

## 11/9/98 LCC Analysis Backup Materials 11

# Change in Life-Cycle Cost Gas-fired Water Heaters Delta Life Cycle Cost of Heat Trap compared to Delta Life Cycle Cost of 2"Jacket Insulation Delta Life Cycle Cost of 2.5" Jacket Insulation Analytic Baseline (1998$) compared toAnalytic Baseline (1998$) compared to Analytic Baseline (1998$) 96%Benefit 4% Disadvantage 98% Benefit 2% Disadvantage 94%Benefit 6% Disadvantage 10000 ... 100% 8000 100% 8000 - - - - - 00 100% r,,,,5o"~~~~ . 6000 I 6000 5000 50% - 4000 50% 4000 50% I. 1 111 iiE cr 2000 |r 2000

... t 

### 0i III o 

### " 0% o t 

### o .... ++. 0% t 00 

### . 0% oooooooooo ooooooOooo oooooo oooo 0 > _____ C)_ C)__ C)_ CD
__ CD__ 0D O ) >0, 100% ' C 0 o )0U ) U0U) C , o 0 o U)O L ) U) 1 U) o o U o O U) U0 o) o 

## ~ cn T co'r cp^ C? M t cn s e q ^9 . Icn .t n( T s toq C? Delta LCC($) Delta LCC($) Delta LCC($)

Delta Life Cycle Cost of Side-Arm Design (w/ Delta Life Cycle Cost ofImproved Flue Baffle

MetalTank) compared toAnalytic Baseline comparedto Analytic Baseline (1998$) (1998$) 22% Benefit 78% Disadvantage 55% Benefit 45% Disadvantage 8000 100%

. 3000 _________ 100% o5 6000- o C 2000 4000 50% 4000 |J 1000 .50%D , g2000 E _- . 

## 0

# 0 % 0 O 

### . ll . i 0% ( t o0 ,-I" .I"I,- I 

### 0% 3 0 LO 0 u 0 u o 0 00 o o 0 o o O 1C N N U) O U) 0U) 0 U) O cn 

### <° t N N t 

### c I C? Delta LCC($) Delta LCC($) 

# 11/9/98 LCC Analysis Backup Materials 12

# Change inLife-Cycle CostforGas-Fired Water Heaters 300 200 ............... 1...............................1............................... ....................................... ........................ ............... 20000

. -

# :8 -30

C o 

# ' ' 1 0 0 ....... ........ | ..................... ........ ............................... |................................... r( >

-200 ........... ................................................................................................. ............................. ............ o2 -200 Oc r 

# T 97.5% 2.5% -300 _____ 

### , _ 

## Heat Traps 2.5" Insulation Improve Flue Baffle I Median; 75% 2" Insulation SideArm Heater 25% Design Option 

# 11/9/98 LCC Analysis Backup Materials 13

# Payback Gas-fired Water Heaters
Payback Periodof HeatTrap cornpared to Payback Periodof2"Jacket Insulation Payback Periodof2.5" Jacket Insulation Analytic Baseline (Years) compared to AnalyticBaseline (Years) comparedto Analytic Baseline (Years) 95% payback<= 3years 83% payback<=3years 59%payback <= 3years 

### 8000 .1% 

### 6000 ---- 100% 4000 100% 

### S.6000 / 

### 4000 . 3000 e 4000 50% S 

### 50% - 2000 _ 50% 

# i 2000 200O 1000 0 

### .. ... 0% 

# it 0 O....... 0 

### % "- . O) ,,,- X'L1- e - _'3 - or - 0 Years Years Years
Payback Period of Side-Arm Design (w/ Metal Payback Period of Improved Flue Baffle Tank) compared toAnalytic Baseline (Years) compared toAnalytic Baseline (Years) 3% payback <=3years 0% payback <=3years 2000 ....-- __ 100% 2100% S 1500 > 1500 1000 , 50% 1000 50% 

### G 500 I 500 0 a0% o0% u a- .

· U M o L r- ') 0 10Ir- .0c' ) ) Years Years 

# 11/9/98 LCC Analysis Backup Materials 14

# Payback for Gas-Fired Water Heaters 18 1 .............. .................................. .... ............................ ................................... ........................................ ................. 

## 6

. 10 CU Cu 

## 6
2 ........................--.............................................

- 2°0

## .... ... . ................................... .................................. ................................. .................................. ................ 2 . 5% 

## .1 97.5% 2.5% 

### -2 M i 

## ______,_____._____. 2.5% 7 

## HeatTraps 2.5" Insulation Improved Flue Baffle I I Median; 75% 2" Insulation Side Arm Heater 25% 

## Design Option 11/9/98 LCC Analysis Backup Materials 15

# Change in Total Installed Cost Gas-fired Water Heaters

Delta Total Installed Cost of HeatTrap Water Delta Total Installed Cost of2" Jacket Insulation Delta Total Installed Cost of2.5" Jacket Heater compared to Analytic Baseline (1998$) Water Heater compared to Analytic Baseline Insulation Water Heatercompared toAnalytic (1998$) Baseline (1998$) 15000 -.-- . -.-..-..-.-..- 100% 8000 .- -- 100% 6000 __ 100% 80% 0 80% U 10000 ." 6 0 00 4000 60%60 40% I 44000 50% 0 5000 50% I' 12000I I 2000 | i 5000 - o: :2000 40% E

20% 2000 

## ~~0 u U %O~20% U20 0 00 0 0 .00000000 0 00 0%0 0 0 0 0 0 0D0 C 0 C C0 0C CD C LO 1)0 D C 0 a 0 0 0 0 aO O ooooooooo oo 00 O ) U) ooooooo O g ) g LO 0 Lo 0 oooo

- N
- C CO, M 'IT ' CM - C -n - - t 1 N N CO0 ' wt 

### $ $ $

. . _ _..____. __ _ ______ _ _______ __. .. Delta Total Installed Cost ofSide-Arm Heater Delta Total InstalledCost of Improved Rue Water Heatercompared toAnalytic Baseline BaffleWater Heatercompared to Analytic (1998$) Baseline (1998$) 1500 -- 100% 8000 ***** 100% 

### 80% c 1000 6000 0% § 60% % I o) o o o v o o ooo o 0/ | 50- | N1 ) n 11') g U g 

# 8 40% g 4000 6 cr0 500 E40% o_,-: : ,_. _ .. . .. . .. ... . 20% I oooooooooo 1- 0s 0 0 0 0 0 0% to v- 0 4 LO 0 to'0 W It $ 

# 11/9/98 LCC Analysis Backup Materials 16

# Change inTotal Installed Costs for Gas-Fired Water Heaters 550 

# 500 . ....... .... 450 0o O 

## 400 '- 

### 350 

## a E 

## 300
1 0: ; :



### Co ; 

## -50 

# 1

. 

### 200 Co U)150 

# t- U ; i 

# i: - u 

## 0o 0 ......... 9 5.. ................... 7.......... .............. .................... . ........................................ ~ 97.5% 2.5% -50 _ , 

## HeatTraps 2.5" Insulation Improved Flue Baffle l Median; 75% 2" Insulation Side Arm Heater 25% Design Option 

# 11/9/98 LCC Analysis Backup Materials 17

# Change in Operating Cost Gas-fired Water Heaters

Delta Operating Cost in 2003 ofHeat Trap Delta Operating Cost in 2003 of2" Jacket Delta Operating Cost in2003 of2.5" Jacket compared toAnalytic Baseline (1998$) Insulation compared toAnalytic Baseline Insulation compared toAnalytic Baseline (1998$) (1998$) 6000 100% 5000 80% 5000 . __ _____ _ 100% 4000 ---. -... ___ 100% '0 4000 80% 0 4000 3000 80 § 3000 , | 3000 60% ' 5| 60% ' 

## ~~~~~2000 '5 U E c 2000 4 0 6 0% ' ' 2000 4 j 60% w O'2000 | .. 80% |

- 1000 20% U , 1000 20% 

## 3 00 20% 0 N co r wD = ; 0% 0
. A .*. .. D. .. 0% , 0 .*****.*N***«-.0 N. 0% O S/Year S/Year S/Year

Delta Operating Cost in2003 ofSide-Arm Delta Operating Cost In 2003of Improved Rue Heatercompared toAnalytic Baseline (1998$) Baffle compared toAnalytic Baseline (1998$) 25 0 ' ° ° - % 4000_ 100% 2000 .80% , 80% 

### * S1500 6(/O 60% oo 1 00 0 [40% 40% 200 i 0

. 500 20% U 

# gE 1000 20% 3 $o_ : c c $ N I 0% o .......... 

### q 

### $ FI O 0% S/Year S/ ear 

# /998 LCC Analysis Backup Materials 18 

# 11/9/98 LCC Analysis Backup Materials 18

# Change in Operating Costs for Gas-Fired Water Heaters 10

0. . i 

## u -30 oh E -20 c8 

# .c -30 .......... ...................................... ................................ ......................... ........ .... ............ a)
0 

### . 

## O" 

# -50 T~ 97.5% 

## Q. =3 ;~: :2.5% HeatTraps 25" Insulation Improve Flue Baffle Media 75% 2" Insulation Side Arm Heater 25% 

## Design Options 11/9/98 LCC Analysis Backup Materials 19

# Change in Energy Consumption Gas-fired WaterHeaters

Delta Daily Energy Consumption of Heat Trap Delta Daily Energy Consumption of2"Jacket Delta Daily Energy Consumption of 2.5" Jacket Water Heater compared to Analytic Baseline nhsulation Water Heater compared to Analytic hsulation WaterHeater compared to Analytic (Btu/Day) Baseline (Btu/Day) Baseline (Btu/Day) 1000 ....... . 100% o 5000 _ -. 100% * 5000 .- 100% S 800 80%.2 4000 80% . u4000 80% 600 60% c, 3000 60% a 3000 60% 400 40% 2000 40% 200040% 0000000000 0000000000 0000000000 200 .| 20% 10 20 1000 20% , L O _0% O U. % U 0 0% 0 0 a

( 0 N CDI 0 0 O 0 0 O C 0 0 N Q a 01 O O C O 0 O CD O ONW 

### 8 N Co C 

### 8 CON O °C t N O CD8O NC0 O Co N MCO Do N CODI I 'CD : - WTu ND - " '7,T 0) toT' ' 0 , N N 0 , N 

### n N N--i C N 

## c N

BTU/Day BTU/Day BTU/Day

Delta Daily Energy Consumption ofSide-Arm Delta Daily Energy Consumption of Improved Design (w/Metal Tank) Water Heater Flue Baffle WaterHeater compared to Analytic compared to Analytic Baseline (Btu/Day) Baseline (Btu/Day) 3000 - - 

### 100% 

### * 4000 100% , 80% 3000 80 > 2000 

# e6% 300 0% = 2000 1 1000 40% 

### § 40% g~iooo~

- 4~20%, 1000 20% ___0% 0 U *% IL) IL. 0 *** ^**r* 8^ 111 r

. U|" i 0%u u (00^0% O°°O° °°°°°0 N0 0 0 0 

### o oo O 0Co N < N C N$ I q N0 wi OD N 0 O , Coa) I '-N w OIO) 0C (0 C _'D r0O>OCD BTU/Day BTU/Day 

# 11/9/98 LCC Analysis Backup Materials 20

# Change inDaily Energy Consumption forGas-Fired Water Heaters 2000

,, -2000............ <"|X 2 -6000 ........ .

. 

## - 0 00 ............. .......................... ..................... E 

### 3



## u) -10000 0o 

### O 

# ,, -12000
... 

### .. ' | -1 8 000 .............. .......................... ............................................... ...................... ......... C > 

## c -18000 n -10000 .............. I............... I ........................... I................................. . . ..................... | .......... 

# -C 0

c



## 2.5% -22000 _____ , ,. 

## HeatTraps 2.5" Insulation Improve Flue Baffle lI Median; 75% 2" Insulation SideArm Heater 25% Design Options 

# 11/9/98 LCC Analysis Backup Materials 21

# Average Daily HotWater Use Households byWater Heater FuelType 140 120 .... 

# 100 >' 80 0 60 

## 40 ........................................................................................................ 

## 0 ~~~20 

# . 

# . .. ~~. 

# .::~ 

# .I97.5% 2.5% 0 . _ _ _ _ _ _ _ _ _ _ 

## I I Median; 75% 

## Gas-fired Electric 25% 

# 11/9/98 LCC Analysis Backup Materials 22

# Incremental ManufacturerCost Electric Water Heaters Design 30 gallon 40 gallon 50 gallon 65 gallon 80 gallon Option (typical) 

# Existing GAMA Level GAMA Level1 GAMA Level 1 GAMA Level 1 GAMA Level 1 Baseline - tank size - tank size + tank size + tank size 

# Analytic GAMA Level 1 GAMA ve G Level 1

GAMA Level AMA Leel 1 GAMA Lev 1 Baseline - tank size - tank size + HFC 245fa + tank size + tank size + HFC 245fa + HFC 245fa + HFC 245fa + HFC 245fa 

# Heat Traps GAMA Level 2 - GAMA evel 1 2" Jacket GAMA Level 3 GAMA Level 3 GAMA Level 3 GAMA Level 3 GAMA Level 3 Insulation - GAMA Level 1 - GAMA Level 1 - GAMA Level 1 - GAMA Level 1 - GAMA Level 1

- tank size - tank size + HFC 245fa + tank size + tank size 

# + HFC 245fa + HFC 245fa + HFC 245fa + HFC 245fa 

# 2.5" Jacket Scale from 2" Scalefrom 2" Scale from 2" Scalefrom 2" Scalefrom 2" Insulation PlasticTank Plastic Tank (Minniear) Insulate 

# I~~ n s u

# l~ a

# t~ e 

# GAMA Level 6- GAMA Level 1 Tank 11/9/98 LCC Analysis Backup Materials 23

# Incremental Manufacturer Cost Gas-fired Water Heater Design 30 gallon 40 gallon 50 gallon 75 gallon Option (typical) 

# Existing GM LeGAMA Level 1 GAMA Level GAMA Level GAMA Level 1 Baseline - tank size - tank size + tank size 

# Analytic GAMA Level 1 GAMA Level 1 GAMA Level 1 GAMA Level 1 Baseline - tank size - tank size + HFC 245fa + tank size + HFC 245fa + HFC 245fa + HFC 245fa 

# Heat Traps GAMA Level 2- GAMA Level 1 2"Jacket GAMA Level 3 GAMA Level 3 GAMA Level 3 GAMA Level 3 Insulation - GAMA Level 1 - GAMA Level 1 - GAMA Level 1 - GAMA Level 1

- tank size - tank size + HFC 245fa + tank size 

# + HFC 245fa + HFC 245fa + HFC 245fa 2.5"Jacket 

# 2.5" Jacet Scalefrom 2" Scalefrom 2" Scalefrom 2" Scalefrom 2" Insulation ~Sid~e 

# Arm ~Side 

# Arm Heater (Minniear) Heater Electronic

_ 

# nectron(ic GAMA Level 6 - GAMA Level 1 

# Ignition (IID) Improved

Improved GAMA Level 5- GAMA Level 1 Flue Baffle 11/9/98 LCC Analysis Backup Materials 24