energy efficient appliances - 1990-91 · comparison shopping and lifecycle costs ... ovens, clothes...
TRANSCRIPT
Introduction. . . . . . . . CONTENTS
....................... ...................... 1 Refrigerators. . . . . . . . . . . ~ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Freezers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clothes Washers and Dishwashers. . . . . . . . . . . . . . . . . . . . . . ~ . . . . . . . . . .9 Water Heaters.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ll Room Air Conditioners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I4 Central Air Conditioners. . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . .16 Central Heat Pumps.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Gas Furnaces and Boilers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . .20 Oil Furnacesand Boilers .......................................... 23 Comparison Shopping and Lifecycle Costs. . . . . . . . . . . . . . . . . . . . . . . . .26 For Morelnformation .............................................. 28
-.A!-- - THE POWER IS IN YOUR HANDS.
USE IT W1SEl.Y.
The Most Energy-Efficient Appliances-1991 Edition Copyright @ 1991 by the American Council for an Energy-Efficient Economy, Washington, D.G.
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INTRODUCTION The Importance of Energy-Efficient Appliances
Using appliances and heating and cooling equipment costs an average household more than $1000 per year. You can sharply reduce your own energy bill by using high-efficiency appliances and space conditioning equipment. Highly efficient appliances may be slightly more expensive to buy than comparable models with lower or average efficiencies. However, the extra first cost for a more efficient appliance is paid back through reduced energy bills long before the product wears out.
Energy-efficient appliances also have a positive effect on the national economy and the environment. The efficient use of oil, gas, and electricity cuts petroleum imports, improves US. economic competitiveness, and reduces the environmental degradation associated with energy production and use.
One-third of the electricity produced in the U.S. is consumed in our homes. Refrigerators alone use the equivalent of the output of over 20 large nuclear power plants-about 5% of the nation’s total electricity consumption. If all the households in the US. had the most efficient refrigerators currently available, the electricity savings would eliminate the need for about 10 large power plants!
National Appliance Efficiency Standards
On March 17, 1987, President Reagan signed into law the National Appliance Energy Conservation Act of 1987. This law established minimum efficiency standards for major home appliances and heating and cooling equipment. The standards for clothes washers and dishwashers took effect January 1, 1988, requiring a cold water rinse option on new models. The standards for most other appliances took effect on January 1, 1990. The standards for central air conditioners and furnaces will not take effect until 1992, because it will take longer to make the necessary changes in these larger products.
We estimate that these standards will save consumers at least $28 billion over the lifetimes of the products sold through the year 2000, or about $300 per household. Furthermore, the standards will reduce peak electricity demand by the equivalent of 25 large power plants.
Even though the standards eliminate the production of energy-guzzling appliances, consumers can still benefit from selecting highly-efficient appliances that significantly exceed the national appliance efficiency standards. These high efficiency appliances provide the opportunity to achieve substantial energy savings. Appliances are still available over a broad range of efficiencies, and consumers would be wise to shop carefully
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for efficient models. After all, the air conditioner, furnace, or refrigerator you buy today will still be in use 15 or 20 years from now.
Utility Rebate Programs Some utilities offer rebates to consumers who purchase energy-efficient appliances. Rebates reduce the net purchase price of high-efficiency models, making them even more attractive to consumers. By offering incentives for the purchase of high-efficiency equipment, utilities are buying energy “supplied” through conservation at a lower cost than through traditional means, such as building new power plants.
Rebates are most common on high-efficiency heat pumps and central air conditioners. Rebates on room air conditioners and water heaters are also sometimes available. Rebate programs are more common among electric companies than gas companies, although some gas utilities offer rebates for high-efficiency furnaces and other products. If you plan to buy a major appliance soon, ask your utility if they offer rebates for efficient models.
The Information in this Booklet This booklet lists, to the best of our knowledge, the most energy-efficient residential appliances available in the US. as of July, 1990. Because of space limitations, only the very highest-rated models are listed within each appliance category. The models listed here represent fewer than 5% of all the different models currently available. Many more appliances are above average in terms of efficiency, but space limitations prevent us from listing them all.
Our lists are based on information in the most recent product directories published by the appliance industry associations. We have tried to include highly efficient models not listed in the directories where information is available. However, we only include models that are mass-produced and widely-distributed in the US. Also, we only include products for which there are standardized efficiency ratings. Therefore, this booklet does not cover ranges, ovens, clothes dryers, solar water heaters, wood stoves, tankless water heaters, portable space heaters, or air-to-air heat exchangers.
The efficiency ratings are based on the standardized tests that manufactur- ers are required to conduct on their products. The same test ratings are used on the yellow EnergyGuide labels now required for most home appliances. The lists of refrigerators, freezers, clothes washers, and dishwashers include the estimated annual energy cost as it appears on the most recent EnergyGuide labels. The base price of energy (such as the cost per kilowatt-hour of electricity) used to determine the price on the EnergyGuide labels has changed in recent years. Some labels based on the older, cheaper cost can still be found in showrooms. Therefore, when comparing EnergyGuide labels, use the same energy price.
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The lists of furnaces, boilers, water heaters, air conditioners and heat pumps include their efficiency ratings instead of estimated energy use and cost. The energy use for these appliances varies greatly from house to house depending on climate, family size, and other factors. But the efficiency rating is a good indicator of relative energy use and operating cost-the higher the efficiency, the lower the energy use and operating cost.
We realize that energy performance is one of several important criteria for selecting home appliances. We do not collect information on product reliability and other concerns. However, energy-efficient appliances are generally high quality products due to the better materials and components used in their construction.
The model numbers in this booklet are used by manufacturers in their product directories. In some cases, appliance dealers use abbreviated model numbers (for example, dropping the first number or letter). An asterisk (*) appearing in a model number indicates a digit or letter that varies with features of the appliance not affecting efficiency and capacity (for example, color).
How to Use This Information
When you buy an appliance, you pay more than just the sales price-you commit yourself to paying the cost of running the appliance for as long as you own it. These energy costs can add up. For example, running a refrigerator for 15-20 years typically costs three times as much as the initial price of the refrigerator.
The sum of the purchase price and the energy costs of running an appliance over its lifetime is called its lifecycle cost. The lifecycle costs of energy-efficient appliances are typically lower than the lifecycle costs of average models. Worksheets for comparing the lifecycle costs of different models of appliances are provided on page 27 of this guide.
When shopping for major appliances, you may want to call several stores or dealers to check the price and availability of different models. Ask the salesperson for information about the efficiency of each model. The yellow EnergyGuide labels can help you compare similar models. We recommend that you disregard the ranges listed on the EnergyGuide labels, since they have not been updated for some time. In comparison shopping, use only the information given for the particular models you are considering.
If you cannot find some of the models listed in this guide, you can still use the information in this booklet to your advantage. Compare the efficiencies of the models you can find to those listed here. The models listed in this booklet represent a very small fraction of all the new appliances now available; you may find products that just missed getting listed in this edition.
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REFRlG ERATORS The energy efficiency of refrigerators has improved considerably over the past fifteen years. A typical new refrigerator with automatic defrost and a top-mounted freezer uses about 1000 kWh per year, whereas the typical model sold in 1973 used about 2000 kWh per year.
The 1990 National Appliance Efficiency Standards specify the maximum electricity consumption allowed by refrigerators, according to volume and features. On average, the 1990 standards result in a 343% improvement in average efficiency over 1989 and earlier models. An even greater jump in efficiency will occur in 1993 when the next phase of the standards take effect.
The models listed below are grouped by door style, defrosting capability and volume. Models are listed within each group in order of increasing electricity use. If two different sized refrigerators use the same amount of electricity per year, the larger model would be considered more efficient because it keeps more space cold with the same amount of electricity.
The energy costs shown below are based on an electricity price of 8 cents per kWh. Your actual energy cost may differ depending on the price of electricity in your area and how you use the refrigerator.
Annual energy cost
Brand Model Volume kWhlyr @Eelkwh Single door, manual defrost, 10.5 to 14.4 cubic feet
Frigidaire D- l3P-0 13.0 500 40 Kelvinator SSXl30EM1* 13.0 500 40 White-Westinghouse RC131 LVO 13.0 500 40 White-Westinghouse RC131 LL'O 13.0 500 40 Kenmore 8661 1 *O 11.6 489 39
General Electric TAl 1 s' 10.6 51 1 41 Hotpoint SSDllCK 10.6 51 1 41 Kenmore 8381 0' 10.5 51 1 41
Sanyo SR 1058 11.6 489 39
Top freezer, partial automatic defrost, 12.0 to 16.4 cubic feet Sun Frost' RF-12 12.0 204 16 Sun Frost' RF-16 16.0 288 23 General Electric TB15SL 14.6 770 62
Hotpoint Magic Chef Magic Chef Kenmore Kenmore Frigidaire Frigidaire White-Westinghouse White-Westinghouse 4
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CTA 15CL
RBI 5G 83851 83831 *
RB15E-1 P
FCD-14TP-0 FCD-l4TF*-1 RT142GC*5 RT142GL*5
14.6 770 14.6 770 14.6 770 14.5 770 13.7 735 14.0 766 14.0 766 14.0 767 14.0 767
62 62 62 62 59 62 62 62 62
Brand
Kelvinator Kenmore Kenmore Kenmore
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MOST EFFICIENT REFRIGERATORS (cont.) Annual energy cost
Model Volume kWhlyr 68plkWh Top freezer, automatic defrost, 14.5 to 16.4 cubic feet
TPK160BNP 16.0 766 62 86960'1 87960*1 87962**
16.0 766 62 16.0 766 62 16.0 766 62
16.5 to 18.4 cubic feet White-Westinghouse Frigidaire Frigidaire Gibson White-Westinghouse White-Westinghouse Frigidaire Kelvinator Gibson Gibson Kenmore Philco Philco Philco TaDDan
RTl7*MC'O FP'-17TF'-O FPD-l7TIF'-* RT17F**U3' RTl74LC'l RTl74ZC*1
TPK 180ZN1* RTl7F**T3' RT17F7'P3A
FPCI-l8TIE*-I
17.0 16.6 16.6 16.6 16.6 16.6 18.0 18.0 16.6 16.6
766 766 766 766 766 766 840 840 840 840
62 62 62 62 62 62 68 68 68 68
83877** 16.6 840 68 PGTN17**A' 16.6 840 68 PRD17A61** 16.6 840 68 YPRD17A61*0 16.6 840 68 95-1 757-**-2 16.6 840 68
Tappan Tappan TaDDan
95-1 757-*'-3 16.6 840 68 95-1 787-**-3 16.6 840 68 95-1 787-**-4 16.6 840 68 . .
18.5 to 20.4 cubic feet Frigidaire Frigidaire Frigidaire Frigidaire Friaidaire
FPCE-l9TF'-O 18.6 839 68 FPCI-l9TF*-0 18.6 839 68 FPCI-l9TIF*-O 18.6 839 68 FPCI-l9TIF*-l 18.6 839 68 FPD-l9TF*-O 18.6 839 68
Frigidaire Frigidaire Frigidaire Frigidaire Gibson
FPE-l9TF*-0 18.6 839 68 FPE-19TIF'-1 18.6 839 68 FPES-l9TF*-0 18.6 839 68 FPZ-l9TF*-O 18.6 839 68 RT19F*U36 18.6 839 68
Gibson Philco Philco White-Westinghouse White-Westinghouse White-Westinghouse White-Westinghouse White-Westinghouse White-Westinahouse
RT19F9*V3B PGTN198'AO PGTNl98*A1 RTl93MC*0 RT194ZC'l RTl95MC*0 RT196MC** RT197MC*0 RT199MC'*
18.6 18.6 18.6 18.6 18.6 18.6 18.6 18.6 18.6
839 839 839 839 839 839 839 839 839
68 68 68 68 68 68 68 68 68
1. This brand available by special order from Sun Frost (Arcata, California) only.
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MOST EFFICIENT REFRIGERATORS (cont.) Annual energy cost
Brand Model Volume kWh/yr @Se/kWh 20.5 to 24.4 cubic feet
General Electric TBX22ZL 21.7 944 76 Hotpoint Kenmore Kenmore General Electric Hotpoint Hotpoint Kelvinator Gibson
CTX22GL 87927* 86927* TBX21 *L CTX21 *L MTX21*M 9601 7'0 RT21 F7*SB'
21.7 944 21.6 944 21.6 944 20.7 941 20.7 941 20.7 944 20.6 942 20.6 945
76 76 76 76 76 76 76 76
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Gibson RT21 F6'T3' 20.6 945 76 Kelvinator 9701 7'0 20.6 942 76 Kenmore Kenmore Kenmore
8381 2*0 8651 5* 86901 **
20.6 942 76 20.6 944 76 20.6 944 76
Kenmore 8691 2" 20.6 944 76 Kenmore 8691 5* 20.6 944 76 Kenmore Kenmore Kenmore
8751 5' 87901 '2 87901 '3
Kenmore 8791 2*2 Kenmore 8791 2*3
20.6 944 76 20.6 944 76 20.6 944 76 20.6 944 76 20.6 944 76
Kenmore 8791 5* 20.6 944 76 Kenmore 9301 2*0 20.6 944 76 Kenmore 9301 7'0 20.6 944 76 Kenmore 96001 '0 20.6 944 76 Philco PRD21A61 *O 20.6 944 76 Philco TPRD21 A61 *O 20.6 944 76 Philco PGTN21 * * A 0 20.6 944 76 Philco RD21 LbMRO 20.6 944 76 Tappan 95-21 87-"-5 20.6 944 76 White-Westinghouse RT21 *JC** 20.6 944 76 White-Westinghouse RT21 *MC" 20.6 944 76 Frigidaire FPCE-21 TF*-* 20.6 945 76 Frigidaire FPCI-21TIF'-* 20.6 945 76 Frigidaire FPCE-21TIF*-O 20.6 945 76 Frigidaire FPCE-21 TIL*-* 20.6 945 76 Frigidaire FPCI-21TF'-* 20.6 945 76 Frigidaire FPE-21TF'-* 20.6 945 76 Frigidaire FPS-21TL*-* 20.6 945 76 Frigidaire FPZ-21TF'-* 20.6 945 76
Gibson RT21 F 6 ' W 20.6 945 Kelvinator TMK206ENl. 20.6 945 Kelvinator TS1206EN2* 20.6 945 Kelvinator TSK206EN** 20.6 945
76 76 76 76
MOST EFFICIENT REFRIGERATORS (cont.) Annual energy cost
Brand Model Volume kWh/yr 88flkWh Side-by-side freezer, automatic defrost 18.5 to 20.4 cubic feet
Amana w 2 0 * 19.9 1032 83 Amana 36071 19.9 1033 83 Amana 36078 19.9 1033 83 Maytag RS'20A 20.2 1133 91 Admiral NS20L7 20.0 1124 90 Crosley CNS20V6 20.0 1124 90 Jenn-Air JRS203 20.0 1124 90 Magic Chef RC20K'-2A 20.0 1124 90 Montgomery Ward HMG19100 20.0 1124 90 Montgomery Ward HMG21*04 20.0 1124 90 Norge NNS207K 20.0 1124 90 Norge NNS208K 20.0 1124 90 Amana SCI9J 19.4 1100 89 Whirlpool ED20AK*S*lt 20.0 1147 92 WhirlDool ED20HK*W'O* 20.0 1147 92 Whirlpool ED20PK*S*l' 20.0 1147 92 Whirlpool ED20PK'WO* 19.9 1147 92 Whirlpool ED20ZK'W*O* 19.9 1147 92 Kenmore 8490*** 19.8 1146 92 Kenmore 94000** 19.8 1149 92 Kenmore 951 04** 19.8 1149 92
20.5 to 22.4 cubic feet Frigidaire Maytag Amana Amana Amana General Electric General Electric Hotpoint RCA Maytag Whirlpool Whirlpool General Electric
FPCIS-22VL*-O RSD22A SC22J SX22J SL22JB TFX22DL TFX22ZL CSXH22GL MSX22GL RSW22A ED22PK*S*O' ED22PM*S*0 TFXH22KL
22.0 1117 21.8 1117 22.4 1159 22.4 1159 22.4 1159 21.8 1157 21.8 1157 21.8 1157 21.8 1157 21.6 1147 21.8 1162 21.8 1162 21.7 1157
- 90 90 93 93 93 93 93 93 93 92 93 93 93
22.5 to 26.4 cubic feet Frigidaire Maytag Amana Amana Amana Amana Amana Amana
FPCE-24VP-0 RSD24A 36551 36558 SC25J SC25JP SL25J SX25J
24.0 1117 23.8 1124 25.2 1199 25.2 1199 25.2 1199 25.2 1199 25.2 1199 25.2 1199
90 90 96 96 96 96 96 96
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NOTE: Models are ranked according to their relative efficiency, as determined by the cubic feet of refrigerated space divided by the annual energy consumption.
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The energy efficiency of freezers has improved over the past decade, though at a slower rate than refrigerators. Like refrigerators, the national standards for freezers took effect in 1990.
Annual Energy Cost @ kWh
Brand Model Volume 7.7ClkWh Yr
Sun Frost* F-10 10.0 25 31 1 Amana ESUl3D 13.0 47 585
Upright freezer, manual defrost, 10.0 to 15.4 cubic feet
15.5 to 17.4 cubic feet White-Westinghouse FUl68LRW3 16.1 49 609 Amana ESU15D 15.0 52 647 Amana ESU17D 17.0 56 697
17.5 to 21.4 cubic feet Sun Frost* F-19 19.0 36 450 Coronado UG21 A 21.2 62 771 Frigidaire UF-21 N-L*l 21.2 62 77 1 General Electric CA21 DL-D 21.2 62 77 1 Gibson FV21 M2WSFG 21.2 62 771 Gibson FV21 M8WSFE 21.2 62 771 Gibson FV21 M9WXFA 21.2 62 771 Hotpoint FV2I CL-D 21.2 62 771 Imperial UG21A 21.2 62 77 1 Imperial UL2164ECWl 21.2 62 77 1 Imperial UL2483ECW1 21.2 62 771 Kelvinator UFP212FM3W 21.2 62 771 Marquette UG21 A 21.2 62 771 Montgomery Ward FFT49669-0 21.2 62 771 Tappan 98-21 88-002 21.2 62 77 1 White-Westinghouse FU211 LRW3 21.2 62 771 White-Westinghouse FU218LRW3 21.2 62 771 Whirlpool EV19OF*S*O 19.2 58 721 Whirlpool EV19OF*W*O 19.1 58 72 1 Friaidaire UFSl9N-L'1 19.3 59 734 General Electric CAI 9DL-D Gibson FVI 9M8WWFC
Imperial UC2075ECWl' Kenmore 20938
White-Westinghouse FUl96LRW3 Wood's *U60
Hotpoint FV19CL-D
Montgomery Ward FFT49269-0
19.3 19.3 19.3 19.3 19.3 19.3 19.3 20.9
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59 734 59 734 59 734 59 734 59 734 59 734 59 734 64 796
*This brand available by special order from Sun Frost (Arcata, Calif.) only. 1
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MOST EFFICIENT FREEZERS (cont.)
Brand Model
Annual Energy Cost @I kWh
Volume 7.7elkWh Yr Chest freezer, manual defrost, 13.5 to 17.4 cubic feet
Admiral C17HE 16.5 35 Crosley C17HE 16.5 35 Magic Chef C17HE 16.5 35 Admiral C15HS 14.8 37 Crosley C15HS 14.8 37 General Electric CB15DL 14.8 37 Hotpoint FH15CL 14.8 37 Magic Chef C15HS 14.8 37 Whirlpool EH15OF*V*O* 14.8 37 Wood’s *C42 14.8 37 General GC15 14.8 38
___ 435 435 435 460 460 460 460 460 460 460 473
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17.5 to 23.4 cubic feet Admiral C20HE 20.3 41 51 0 Crosley C20HE 20.3 41 51 0 Magic Chef C20HE 20.3 41 51 0 Admiral C22HS 21.7 47 585 Crosley C22HS 21.7 47 585 Magic Chef C22HS 21.7 47 585 Whirlpool EH220F*V*0* 21.7 47 585 Wood’s *C62 21.7 47 585 General GC20 20.4 50 622
DISHWASHERS AND CLOTHES WASHERS Most of the cost of running dishwashers and clothes washers is for heating water. Therefore, an efficient water heater helps reduce the costs asso- ciated with these appliances. The annual energy costs shown below are based on a typical electric water heater and an electricity price of 7.7 cents/ kWh (the prices used on the most recent yellow EnergyGuide labels).
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MOST EFFICIENT DISHWASHERS
Brand
Annual Energy Cost @ Pre-
Model kwhlcvcle 7.7elkWh heat Standard (holding more than 8 place settings)
A.E.G. Favorit 6651 1.6 40 Y In-Sink-Erator Classic 2.1 5 53 Y
Caloric DCS416 2.169 54 Y Caloric DUS406 2.169 54 Y Modern Maid DDW155 2.169 54 Y Modern Maid DDWl60 2.169 54 Y Caloric DUS409 2.23 55 Y Modern Maid DDWl95 2.23 55 Y Frigidaire DW1 OOD 2.3 57 Y Gibson SU24P3 2.3 57 Y Gibson SU24P4 2.3 57 Y Montgomery Ward UCOlOO5B 2.3 57 Y Montgomery Ward UCOl026B 2.3 57 Y Montgomery Ward UCO1034B 2.3 57 Y Montgomery Ward UCOl035B 2.3 57 Y Montgomery Ward UCOl038B 2.3 57 Y Tappan 61 -1 127-1 0 2.3 57 Y Tappan 61 -1 137-1 0 2.3 57 Y White Westinahouse SU21OJ 2.3 57 V
Supreme
MOST EFFICIENT CLOTHES WASHERS Annual Annual Energy Energy cost @ Use
Brand Model 7.7ClkWh (kWh) Standard Machines (over 16 gallon capacity)
Gibson WS 27 M6-V 22 286 Sears Roebuck & Co. 4988 22 286 White Westinghouse LT25OL 22 286 White Westinghouse LT7OOL 22 286 White Westinghouse LT8OOL 22 286 White Westinghouse LTl5OL 23 299 Frigidaire WL 52 675 White Westinghouse LA271 52 675 Maytag A21 2ST 52 678 Maytag A1 O*T 64 836 Maytag A112T 65 840 Maytag A1 83T 65 840 Maytag A1 90T 65 840 Maytag A21 *T 65 840 Maytag A28*T 65 840 Maytag A31 2T 65 840
The energy efficiency of a water heater is indicated by its Energy Factor (EF), an overall efficiency based on the use of 64 gallons of hot water per day. The national appliance efficiency standards for water heaters took effect in 1990. The standards are based on storage tank size, as indicated below:
Minimum Energy Factors (EF)
Tank Size Gas Oil Electric
30 gallons 0.56 0.53 0.91 40 gallons 0.54 0.53 0.90 50 gallons 0.53 0.50 0.88 60 gallons 0.51 0.48 0.87
All other things being equal, the smaller the water heater tank, the higher the EF. Compared to small tanks, large tanks have a larger surface area, which increases heat loss from the tanks and decreases the energy efficiency.
Of course, the capacity of the water heater is an important consideration. The water heater should provide enough hot water at the busiest time of the day. For example, a household of two adults may never use more than 30 gallons of hot water in an hour, but a family of six may use as much as 60 gallons in an hour. The ability of a water heater to meet peak demands for hot water is indicated by its “first hour rating” (listed in the “rating” column below). This rating accounts for the effects of tank size and the speed by which cold water is heated. The models listed below are grouped by their tank size.
Brand
MOST EFFICIENT GAS-FIRED WATER HEATERS
Model Energy
1st Hr Factor Rated storage less than 40 gallons
American Appliance’ DVPB35 147 American Appliance’ DVPB35LP 147 Bock 40 HE-N 71 Bock 40 HE-X 71 Bradford-White M-l I I-403T5CN-7 71 Bradford-White M-Ill-403T5CX-7 71 Lochinvar HEN040 71 US. Water Heater Co. M-lll-R403T5CX-7 71
Storage
86 86 65 65 65 65 65 65
34 34 38 38 38 38 38 38
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1. This model is designed for use as a combination space and water heater
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MOST EFFICIENT GAS-FIRED WATER HEATERS (cont) Energy
Brand Model 1st Hr Factor Storage Approximately 40 gallons rated storage
Marathon MG40345 77 74 40 Marathon MG40345H 77 74 40 Sears Roebuck and Co. 449.33041 77 74 40 Sears Roebuck and Co. 449.33043 77 74 40 American Appliance American Appliance Craft maste r Craft maste r Mor-Flo Mor-Flo American Appliance American Appliance Craftmaster Craft maste r Mor-Flo
Marathon
N463V
N463V
N463V
463SV N2F463T 40 463SV 463SV
N463V-LP
N463V-LP
N463V-LP
86 86 86 86 86 86 65 72 72 65 65
72 40 72 40 72 40 72 40 72 40 72 40 63 40 63 40 63 40 63 40 63 40
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Approximately 50 gallons rated storage MG50345 85 71 50
Marathon MG50345H 85 71 50 Sears Roebuck and Co. 449.33051 85 71 50 Sears Roebuck and Co. 449.33053 85 71 50 Lochinvar H EL050 81 62 50 Lochinvar HEN050 81 62 50 US. Water Heater Co. M-llLR503S5CN-7 81 62 50 US. Water Heater Co. M-lll-R503S5CX-7 81 62 50 American Appliance N2F563T 81 61 50 Craftmaster 50 81 61 50
MOST EFFICIENT OIL-FIRED WATER HEATERS Brand Model 1st Hr EF Storage Bock 32PP 131 63 32 Bradford-White F-I-305E50EZ 120 61 30 Carlin RCG-3OEZ 120 61 30 Ford FG3016EZ 120 61 30 Rheem OGL-3OEZ 120 61 30 Bock 30ES 109 60 28
MOST EFFICIENT ELECTRIC WATER HEATERS
Brand Model 1st Hr Energy Storage Rating Factor Capacity
Approximately 30 gallons rated storage Marathon MP30238 39 98 30 Marathon MP30255 46 98 30 Reliance 1 30 lOPT6-W 38 98 30 State TCL 30 2LRT6-W 42 98 30
(Many models have Energy Factor ratings of 96-97%.)
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MOST EFFICIENT ELECTRIC WATER HEATERS (cont.)
Brand Model Rating Factor Capacity
Approximately 40 gallons rated storage Bradford-White M-Ill-30R5SS-12 42 97 42 Sears Roebuck 153.31 0460 47 97 40 Sears Roebuck 449-31 041 0 49 97 40 Sears Roebuck 449-31 441 0 45 97 40 Sears Roebuck 449-32041 0 56 97 40
1st Hr Energy Storage
State TCL 40 2LRT6-W 50 97 40 U.S. Water Heater M-Ill-RE30R5SS-12 42 97 42
(Many models have Energy Factor ratings of 96%.)
Approximately 50 gallons rated storage Bradford-White M-Ill-50T5SS-12 59 96 50 Marathon MX50155S 58 96 50 Rheem 81 G-52D 57 96 52 Rheem 81 GV52' 57 96 50 Richmond 8VG52-1, HIVG52S 57 96 52
Rudd MEG52-1 57 96 52 Sears Roebuck 449-31 051 0 59 96 52 Sutherland CL81 GX52D 57 96 50 U.S. Water Heater M-Ill-RE50T5SS-12 59 96 50 Vaughn M-50 61 96 50
(Many models have Energy Factor ratings of 95%.)
Approximately 60 gallons rated storage
Marathon MX60'30 59 96 60 Marathon MX60*38 63 96 60 Marathon MX60*45 66 96 60 Marathon MX60*55 70 96 60
(Many models have Energy Factor ratings of 95%.)
HEAT PUMP WATER HEATERS A heat pump water heater operates on the same principal as a refrigerator or an air conditioner-it removes heat from the surrounding air and delivers it to the water in the tank. Heat pump water heaters use about 1 /3 as much electricity as ordinary electric resistance water heaters.
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MOST EFFICIENT HEAT-PUMP WATER HEATERS Brand Model 1st Hr EF Storage Reliance 5 82 1 AHPWl HP-3,3-4 81 3.1 82 State SS8 82 1AHP4/CHP-3,3-4 81 3.1 82 Therma-Stor TS-HP-80-HRA 72 3.1 80 Therma-Stor TS-HP-120-18-30 111 3.1 120 Reliance 5 52 1AHPWl HP-3.3-4 54 3.0 52 State SS8 52 lAHP4/CHP-3,3-4 54 3.0 52 Reliance 5 66 1AHPWl HP-3,3-4 67 2.9 66 State SS8 66 1AHP4/CHP-3,3-4 67 2.9 66 Therma-Stor TS-HPV-AC-80 73 2.9 80 Therma-Stor TS-HPV-AC-120 107 2.9 120 Therma-Stor TS-HP-120-18 110 2.9 120
ROOM AIR CONDITIONERS Room air conditioners are rated by their Energy Efficiency Ratio (EER), the ratio of the cooling output divided by the power consumption. The higher the EER, the more efficient the air conditioner.
The 1990 national standards for room air conditioners vary with the design and cooling capacity of each unit. On average, the 1990 standard requires a minimum EER of about 8.6.
Brand Model MBtulhr Btulhr EER Volts
5,000 to 6,999 Btu/hr cooling capacity Airtemp C3R06F2A 5.80 5,800 10.0 115 Airtemp G3R06F2A 5.80 5,800 10.0 115 Climatrol M3R06F2A 5.80 5,800 10.0 115 Fedders A3R06F2A 5.80 5,800 10.0 115 Friedrich SQ05H10 5.60 5,600 10.0 115 Friedrich SQO6H10 6.50 6,500 10.0 115 Friedrich SQ07HlO 7.10 7,100 10.0 115 Friedrich YQ06H10 6.20 6,200 10.0 115 Sharp AF-607M6 6.30 6,300 9.8 115 Teknika AK61 E 5.90 5,900 9.6 115 Amana 7P2MA 6.65 6,650 9.5 115 General Electric AMEO6LA 6.00 6,000 9.5 115 Panasonic CW-601 JU 6.00 6,000 9.5 115 Quasar HQ2062DW 6.00 6,000 9.5 115 Sharp AF-508M6 5.50 5,500 9.5 115 Sharp AF-608M6 6.50 6,500 9.5 115 Tekn i ka AM63E 6.30 6,300 9.5 115 Teknika AM64E 6.30 6,300 9.5 115
14
MOST EFFICIENT ROOM AIR CONDITIONERS (cont.) Brand Model MBtu/hr Btulhr EER Volts
7,000 to 8,999 Btu/hr coolina caDacitv Friedrich Friedrich Teknika Teknika
SS07H1 OA 7.20 7,200 SS08H1 OA 8.20 8,200 AK83E 8.00 8,000 AK84E 8.00 8,000
9,000 to 10,999 Btu/hr cooling capacity Carrier 51 GMB0091 9.00 9,000 General Electric ACDO9LAXl 9.00 9,000 Hotpoint KCDO9LAXl 9.00 9,000 Friedrich SMl OH1 OA 10.30 10,300 General Electric AVXl OFA 10.00 10.000
11.0 115 10.5 115 9.7 115 9.7 115
12.0 115 12.0 115 12.0 115 12.0 115 11.6 115
Panasonic Quasar
Friedrich General Electric Quasar
Friedrich Carrier Carrier General Electric Kenmore
CW-lO2VS12L6U 10.00 10,000 HQ2102CW 10.00 10,000
SS12HlOA 12.00 12,000 AMH12AA 12.00 12,000 HQ2122DW 12.00 12,000
SM14H1 OA 14.00 14,000 51 GMAll41 13.50 13,500 51GMB1141 14.00 14,000 ACDl4AAXl 13.50 13,500 106.8761 492 14.00 14.000
11,000 to 12,999 Btu/hr cooling capacity
13,000 to 74,999 Btu/hr cooling capacity
11.6 11.6
115 115
10.0 9.5 9.5 __
__ 115 115 115 __
10.5 10.2 10.2 10.2 10.2
115 115 115 115 115
Airtemp C3L14E2A 14.00 14,000 10.0 115 Airtemp G3L14E2A 14.00 14,000 10.0 115 Climatrol M3L14E2A 14.00 14,000 10.0 115 Fedders A3L14E2A 14.00 14,000 10.0 115 Panasonic CW-1401QU 13.50 13,500 9.5 115 Panasonic CW-141 VS12L6U 13.50 13,500 9.5 115
15,000 to 16,999 Btu/hr cooling capacity Comfort- Aire WV163HE 16.40 16,400 9.0 230 Comfort-Aire WW163 16.40 16,400 9.0 230 Friedrich SS15H30A 15.00 15,000 9.0 230 General Electric ACD15DAX1 15.00 15,000 9.0 230 General Electric ACS15DAXl 15.00 15,000 9.0 230 General Electric AESl5DAV1 15.00 15,000 9.0 230 Hotpoint KCSl5DAXl 15.00 15,000 9.0 230 Hotpoint KESl5DAVl 15.00 15,000 9.0 230 Kenmore 106.8771 591 15.00 15,000 9.0 230 Whirl pool AC1504XTO 15.00 15,000 9.0 230
17,000 to 19,999 Btu/hr cooling capacity Friedrich SL19H30 19.00 19,000 9.5 230 Panasonic CW-1802QU 18.00 18,000 9.5 230 Quasar HQ2182DW 18.00 18,000 9.5 230 Carrier 77GMA1183 17.60 17,600 9.4 230 Friedrich EL1 9H35 18.80 18.800 9.4 230 Sharp AF-1807M8 18.50 18,500 9.3 230
15
CENTRAL AIR CONDITIONERS Central air conditioners (CACs) are rated according to their Seasonal Energy Efficiency Ratio (SEER). This is the cooling output divided by the power input for an average U.S. climate. The average new CAC sold in 1988 had a SEER of about 9. The national appliance efficiency standard for split system central air conditioners will take effect in 1992, requiring a minimum SEER of 10.
Many older CACs have SEERS of only 6 or 7. If you need or want to replace the outdoor (compressor) unit of your current air conditioner, make sure the indoor (blower coil) unit is compatible with the new outdoor unit. A highly efficient outdoor unit may not achieve its rated efficiency if paired with an older blower coil. Ask your serviceman to properly match your system to achieve its highest efficiency.
The air conditioners listed below are grouped by their cooling capacity; each “ton” represents 12,000 BTU/hour of cooling capacity.
Model/ Brand Condensina ModeKoil SEER Btulhr
Capacity: approximately 2.0 tons Trane TTX724A TWV739E15-C 13.45 26,400 Trane TTX724A TWH739E15-C 13.40 26,400 Trane TTX724A THD080A9V3tTXF736S5t 13.40 25,800
BAY 24x045 American ATN024A THD080A9V3tTXF736S5t 13.35 25,600
Stand a r d American ATN024A
BAY24XO45 TUC080B9V3tTXC736S5t 13.00 25,800
Standard BAY 24x045 Lennox HS22-261V-1 P CB15-41-1 PtLB53081CD 13.00 25,400 Lennox HS22-261V-IP CB19-26-1 PtLB53081CD 12.90 24,000 Lennox
Trane Trane Lennox Trane Trane American
Lennox Coleman
Standard
HS22-261V-1 P CBH19-26-1PtLB-53081CD
Camcitv: amroximafelv 2.5 tons , < ,. TTS730A TUC080B9V3tTXC736S5 TTS730A TDC080B9V3tTXC736S5 HS22-311V-1P CB15-41-1 PtLB53081 CD TTX730A TWV739E15-C TTX730A TWH739E15-C ATN030A TWV739E15-C
HS22-311V-1P C14-41-1 FFtLB53081CD 9430G911 9435E833K
12.90
15.70 15.70 13.50 13.45 13.40 13.35
13.25 13.20
24,000
30,800 30,800 31,400 32,000 31,800 32,200
32,000 29,600
Coleman 9430691 1 3736-823K 13.20 29,600
American ATNOBOA THD080A9V3tTXF736S5t 13.15 31,000 Standard BAY24X045
Amana ZRCF30U01 D SCFC36AOVD 12.95 30,400 C o I e in a n 9430G911 9435E833 12.95 29,600 Lennox HS22-311V-1P CB19-31-1 PtLB53081CD 12.90 31,200
16
MOST EFFICIENT CENTRAL AIR CONDITIONERS (cont.) Modell
Brand Condensing ModellCoil SEER Btuthr
Trane
~~
capacity: approximately 3.0 tons TTS730A TWV739E15-C 16.90 33.200
Trane TTS730A Trane TTS736A Trane TTS736A Trane TTS736A Trane TTS736A Lennox HS14-411 V-6P Lennox HS14-413V-6Y Goodman CTS36-1
(GMC, Janitrol, Franklin)
TWH739E15-C 16.90 33,200 TWV739E15-C 16.20 39,000 TWH739E15-C 16.20 39,000 TUC080B9V3tTXC736S5 15.45 36,000 TDC080B9V3tTXC736S5 15.45 36,000 CB15-41-1 P 15.00 40,000 CB15-41-IP 15.00 40,000 A50-XXtEEP 14.00 40,000
American ATN036A TWH064E15-C
Trane TTX736A TWH064E15-C American ATN036A TWV064E15-C
Standard
Standard
13.85 $,OOO
13.80 39,500 13.75 40,000
~ ~~
Capacity: approximately 4.0 tons Trane TTS748A TWV064E15-C 15.15 49.500 Trane Trane Trane Trane Trane Lennox Lennox Trane American
Standard
TTS748A TTS748A TTS748A TTS748A TTS748A HS14-51 IV-6P HS14-513V-6Y TTX742B ATN042A
TUCIOOB9V5tTXCO,TXC754S 15.00 TUCl OOB9V5tTXC,TXA064S 15.00 THDIOOA9V5tTHX060S 15.00 TDCI 2089V5tTXCO,TXC754S 14.50 TDCI 20B9V5tTXC,TXA064S 14.50 CB 1 5-65- 1 P 14.00 CB15-65-1P 14.00 TWH064E15-C 13.75 TWH064E15-C 13.70
46;500 48,500 48,500 46,000 48,500 52,000 52,000 45,000 45,000
Trane TTX742B TWV064E15-C 13.60 45,000 Trane TTX748A TWEO9OA 13.60 52,000 American ATN042A THDlOOA9V5tTXH060S5t 13.35 44,500
Lennox HS14-511V-6P CB15-46-1P 13.20 49.500 Standard BAY24XO45
Lennox HSI 4-513V-6Y CB15-46-IP 13.20 49,500
17
CENTRAL HEAT PUMPS Central heat pumps provide both cooling in the summer and heating in the winter. However, heat pumps do not perform well over extended periods of sub-freezing temperatures. The cooling performance of heat pumps, like that of central air conditioners, is rated as a SEER. Heating performance is measured by the Heating Season Performance Factor (HSPF), a ratio of the estimated seasonal heating output divided by the seasonal power con- sumption for an average US. climate. A typical new heat pump has an HSPF of about 6.5 and a SEER of about 9. The national appliance efficiency standard for split system heat pumps will require a minimum HSPF of 6.8 and a minimum SEER of 10, effective in 1992.
The heat pumps listed below are grouped by their heating and cooling capacities and ranked in order of their heating efficiencies. If you live in a region with significant heating and cooling seasons (e.g., mid-Atlantic states), you should seek a heat pump that performs well in both seasons. If you live in a region where summer cooling is much more important than winter heating (e.g., Florida), then you will want a unit that is particularly efficient for cooling.
Btuihr Btuihr Brand Outdoor Unit Indoor Unit Cool SEER Heat HSPF
Capacity: approximately 7.5 tons Coleman 3718-611 371 8-833 19,400 11.30 20,200 8.00 Lennox HP22-211-1 P CB19-21-1Pt 19,800 12.85 19,000 7.90
LB34792BE Lennox HP22-211-1 P CBHl9-21-IPt 19,800 12.85 19,000 7.90
LB-34792BE Lennox HP22-211-1P CB19-26-1Pt 19,800 12.85 19,000 7.90
LB34792BE Lennox HP22-211-1 P CBH19-26-1Pt 19,800 12.85 19,000 7.90
Lennox HP22-211-1P CHl6-41-1FFt 19,700 11.90 19,700 7.60 LB-34792BE
LB-34792BE
Capacity: approximately 2.0 tons
Carrier 38QE92430 38QE02430t 24,000 13.35 25,800 8.75
Lennox HP22-261-1 P CB19-31-1 P t 24,800 13.60 24,000 8.40 40QE02430
LB34792BE Lennox HP22-261-1 P CBH19-31-1 P t 24,800 13.60 24,000 8.40
LB-34792BE Lennox HP22-261-1 P CB19-26-1Pt 24,400 13.25 24,000 8.20
LB34792BE Lennox HP22-261-1 P CBH19-26-1 P t 24,400 13.25 24,000 8.20
LB-34792BE Coleman 3724-911 6932-DUVO 23,400 11.10 24,400 8.20 Coleman 3724-911 3724-833 23,800 11.30 24,800 8.00 Lennox HP22-261-1 P CH16-41-1FFt 24,200 12.50 24,200 7.90
LB-34792BE
18
I
MOST EFFICIENT CENTRAL HEAT PUMPS (cont)
Brand Outdoor Unit Indoor Unit Cool SEER Heat HSPF
Capacity: approximately 2.5 tons
Btuihr Btulhr
Trane TWS730A TWV739E15-C 31,800 16.40 29,600 8.70 Trane TWS730A TWH739E15-C 31,800 16.40 29,600 8.70 Lennox HP21-311-1 P CB19-31-1Pt 31,000 13.40 31,200 8.65
LB34792BG Lennox HP21-311-1 P CBH19-31-1Pt 31,000 13.40 31,200 8.65
LE-34792BG Lennox HP21-311-1 P CB19-41-1Pt 30,800 13.00 31,000 8.55
LB34792BG Lennox HP21-311-1 P CBHl9-41-1Pt 30,800 13.00 31.000 8.55
LB-34792BG Rheem RPGB-030JA RHQA-13t 30,200 12.20 29,400 8.40
RCQB-BO30
Rudd UPGB-030JA UHQA-13t 30,200 12.20 29,400 8.40 RCQB-BO30
Trane TWX730B TWV739E15-C 32,800 12.75 28,800 8.05 Capacity: approximately 3.0 tons
Carrier 38QE93630 38QE03630t 36,800 14.05 35,400 9.05 40QE03630
Trane Trane Trane Trane American
Lennox
Lennox
American
Standard
Standard
TWS736A TWV739E15-C TWS736A TWH739E15-C TWX736A TWH064E15-C TWX736A TWV064E15-C TWA036A TWH064E15-C
HP22-411-1 P CB19-41-1 P t LB34792BG
HP22-411-1 P CBH19-41-1 P t LB-34792BG
TWA036A TWV064E15-C
37,600 37,600 40,000 39,500 42,000
35,600
35,600
41,500
15.20 15.20 12.85
34,600 34,600 34.600
8.75 8.75 8.65
12.80 12.00
12.80
12.80
11.85
34,400 36,400
36,400
36,400
36,200
8.60 8.55
8.50
8.50
8.50
Coleman 3736-81 1 3736-823 37,000 11.30 38,500 8.50 Coleman 3736-811 3736-833 37,000 11.30 38,500 8.50
Capacity: approximately 3.5 tons Trane TWS748A Trane TWS748 Lennox HP22-461-1 P
Lennox HP22-461-1 P
Lennox HP19-461-1P
Lennox HP19-461-1P
Coleman 3742-911 Lennox HP19-461-1P
TWV064E15-C 48,000 TWH064E15-C 48,000 CB19-51-1Pt 42,000
LB-34792BG CH19-51-ltB19- 42,000
51 -1 PtLB-34792BG CB19-51-1 P t 43,000
LB34792BG CH19-51tB19-51- 43,000
1 PtLB-34792BG 3736-833 41,500 GB19-51-1P 43.000
15.05 43,500 15.05 43,500 12.80 42,000
12.80 42,000
11.50 43,000
11.50 43,000
10.60 41,500 10.50 43,000
9.40 9.40 8.50
8.50
8.30
8.30
8.30 8.30
__
~
19
GAS FURNACES New furnaces are rated by their Annual Fuel Utilization Efficiency (AFUE), a measure of overall seasonal performance. The average new gas furnace sold in 1988 had an AFUE of 75%. The national efficiency standard for furnaces will take effect in 1992, and it will require that each furnace have an AFUE of at least 78%. Furnaces are available over a broad range of efficiencies, depending on the sophistication of the equipment:
Furnace feature Typical AFUE
Gas pilot light (no efficiency features) Electronic ignition Automatic vent damper Power combustion Condensing furnace
62%
76% 82% go(+)%
68%
Condensing furnaces are often priced much higher than less efficient furnaces. Accordingly, condensing furnaces are most economical in areas with long, cold winters. Homeowners in regions with moderate or mild winters may find that furnaces with AFUEs in the 80% to 85% range are their best buys. Also, when buying a new furnace, make sure the capacity is appropriate for your home (an “oversized” furnace will operate less efficiently).
MOST EFFICIENT GAS FURNACES Brand Model Btulhr AFUE
30.000 to 60.000 BtdHr
Bryant 398AAW030040 40,000 96.6 Bryant 398AAZ030040 40,000 96.6 Carrier 58SX040-BC 40,000 96.6 Carrier 58SX040-FG 40,000 96.6 Carrier 58SXA040-FG 40,000 96.6 Day and Night 398AAW030040 40,000 96.6 Day and Night 398AAZ030040 40,000 96.6 Payne 398AAW030040 40,000 96.6 Payne 398AAZ030040 40,000 96.6 Lennox GI 4Q3-40- 38,000 96.2 Armstrong EG6E40DC13 38,000 95.4 Glowcore UGR040D13 38,000 95.4 Lennox GSRl4Q4-50- 47,000 95.0 Lennox GSR14Q3-50- 47,000 94.8 Heil-Quaker NUGSOSOAF 47,000 94.6 Heil-Quaker NULS050AF 47,000 94.6 Sears Roebuck and Co. 867.769050 47,000 94.6 Williamson WU47-05-3N 47,000 94.6 Williamson wu47-05-4L 47,000 94.6 Davton 3E436B 46.000 94.0
20
MOST EFFICIENT GAS FURNACES (cont.) Brand Model Btulhr AFUE
30,000 to 60,000 Btu/Hr (cont.) Heil-Quaker NDLKOSO(A,D)F 47,000 94.0 Heil-Quaker N UG K050M F 46,000 94.0 Sears Roebuck and Co. 867.769412 46,000 94.0 Tempstar NDLK050(A,D)F 47,000 94.0 Williamson WD45-05-2 47,000 94.0
Williamson WU47-05-2 46.000 94.0 Duomatic Olsen Heil-Quaker Tempstar Carrier Day and Night Carrier Carrier Carrier Day and Night
HDS 60M(70/60M) NULK050(L,M)F NULKOSO( L,M) F
398BAW036060 58SXB060-CC
58SXB060-GG 58SXB060-GG-L 58SXB080-GG-L 398BAZ036060
61.000 to 80.000 Btu/hr
58;OOO 46,000 46,000 59,000 59,000 59,000 41,000 54,000 59,000
93.7 93.7 93.7 93.6 93.6 93.5 93.5 93.5 93.5
__
__
Sears Roebuck and Co. 867.769060 68,000 96.6 Amana EGHW100DC3 76,000 94.9 Amana EGHWlOODC3 76,000 94.9 Duomatic Olsen HDS 70M 67,000 94.2 Williamson C217-08-NOAH 80,000 94.0 Carrier 58SXB080-BC 79,000 93.6 Day and Night 398BAW036080 79,000 93.6 Carrier 58SXB080-GG 79,000 93.5 Carrier 58SXBlOO-LG-L 68,000 93.5 Day and Night 398BAZ036080 79,000 93.5 Day and Night Duomatic Olsen Sears Roebuck and Co. Duomatic Olsen
Amana Duomatic Olsen Duomatic Olsen Carrier Carrier Day and Night Day and Night Lennox
398BAZ060100-L HDS 80M(90/80M) 867.769470 HCS2-81 M
81,000 to 705,000 Btdhr EGHWlOODC3 HDS 90M HCS2-90M 58SXBlOO-HG 58SXBlOO-LG 398BAZ042100 398BAZ060100 G14Q4/5-100-
68,000 76,000 67,000 75,000
94,000 86,000 84,000 99,000 99,000 99,000 99,000 95.000
93.5 93.5 93.4 93.2
94.0 94.0 93.7 93.5 93.5 93.5 93.5 93.5
106,000 to 135,000 BWhr Central Environmental P1 UDD16N11401A 112,000 92.6
Central Environmental PlUDD20N13301A 131,000 92.6
Central Environmental P2UDD16N11401 11 2,000 92.6
Systems
Systems
Systems
21
MOST EFFICIENT GAS FURNACES (cont.) Brand Model Btulhr AFUE
706,000 to 135,000 Btu/Hr (cont.} Central Environmental P2UDD16P11401A 11 2,000 92.6
Central Environmental P2UDD20N13301 131,000 92.6
Central Environmental P2UDD20P13301A 131,000 92.6
Systems
Systems
Svstems Central Environmental PANU-LDl6N120A 11 2,000 92.6
Central Environmental PANU-LD20Nl40A 131,000 92.6
Central Environmental PBNU-LD16P120 112,000 92.6
Systems
Systems
Svstems Central Environmental PBNU-LDl6N120A 11 2,000 92.6
Central Environmental PBNU-LD20N140A 131,000 92.6
Central Environmental PBNU-LD20P140A 131,000 92.6
Systems
Systems
Svstems
MOST EFFICIENT GAS BOILERS (HOT WATER) Brand Model Btulhr AFUE
30,000 to 60,000 Btu/hr Hydrotherm A-50 B 47,000 90.4 Giowcore GB060-7 Buderus Logana 105/15 EnerRoval 60H
53;OOO 89.0 52,000 87.4 52,000 87.0
EnerRoyal 60HC 52,000 87.0 Heatmaker 6OHWC 52.000 87.0 Weil-Mclain VHE-3 Burnham XG-2003A-PV Weil-McLain AHE-60 Weil-McLain AHE-45 Peerless PDE-065 Bryant 237AAW002042 Bryant 237AAY002042 Carrier 61 SWB042 Carrier Crown Day and Night Day and Night Dunkirk Metzger Payne
591000 54,000 51,000 38,000 56,000 36,000 36,000 36.000
61 SWD042 XE-2
361000 36.000
87.0
85.5 85.3
86.5
84.8 84.5 84.5 84.5 84.5 84.5
237AAW002042 36,000 84.5 237AAY002042 36,000 84.5 XE-2 36.000 84.5 XE-2 36,000 237AAW002042 36,000
84.5 84.5
Payne 237AAY002042 36,000 84.5 Pennco FS-2 36,000 84.5 Sears Roebuck and Co. 229.96442 1 36,000 84.5 Sears Roebuck and Co. 229.9641 22 36,000 84.5
c
MOST EFFICIENT GAS BOILERS (HOT WATER) (cont.) Brand Model Btulhr AFUE
61.000 to 90,000 Btu/hr Hydrotherm A-100 B Glowcore GB090-7 Buderus Logana 105121 Weil-Mclain GV-3 Weil-Mclain VHE-4
88,000 90.4 80,000 88.8 72,000 87.7 61,000 87.5 87,000 87.1
Burnham XG-2004A-PV 82,000 85.3 Burnham XG2004AV 82,000 84.8 SlanVFin GG-75HEDS 64,000 84.7 Peerless PDE-097 83,000 84.4 SlanVFin GG-75HEDP 64,000 84.4
Hydrotherm Glowcore Buderus Logana Buderus Loaana Weil-Mclain- Weil-Mclain Weil-Mclain Buderus Logana Weil-Mclain Peerless
97,000 to 150,000 Btu/hr A-150 6.C GB16014 105128 205/42 VHE-6 VHE-5 GV-4 205134 GV-5 PDE-130
132,000 142,000 96,000
143,000 147,000 11 7,000 92,000
11 6,000 122,000 110,000
90.8 88.8 87.8 87.4 87.4 87.3 87.3 87.2 87.2 84.0
MOST EFFICIENT GAS BOILERS (STEAM) Brand Model Btulhr AFUE
Axeman-Anderson Burnham Burnham Burnham Axeman-Anderson Axeman-Anderson Axeman-Anderson Axeman-Anderson Axeman-Anderson Axeman-Anderson Axeman- Anderson Axeman- Anderson
108PGU XG-4004 XG-4005 XG-4006 87PGU 149PGU 74PG 108PG 128PGU 87PG
11 6,000 88,000
117,000 147,000 105,000 201,000 11 4,000 159,000 159,000 129.000
83.5 83.5 83.4 83.3 82.8 82.6 82.5 82.4 82.4 82.1
128PG 149PG
191,000 233,000
81.8 81.8
OIL FURNACES The national standard for oil furnaces is the same as that for gas furnaces: a minimum AFUE of 78% in 1992. High efficiency oil furnaces achieve their high ratings through automatic flue dampers and “flame retention” burners.
23
MOST EFFICIENT OIL FURNACES Brand Model MBtulhr Btulhr AFUE
50,000 to 80,000 Btdhr Dornback H EO-70-2.5 66.5 66.500 91.6 Yukon Yukon EnerRoval EnerRoyal EnerRoval
U-70-0-03 64 64,000 88.9 H-70-0-02 63 63,000 87.8 ER75 FF 75 75,000 86.7 ER75 HB 75 75,000 86.7 ERCF56 59 59,000 86.7
EnerRoyal ER75 RF 75 75,000 86.5 EnerRoyal ERHB56 SF 58 58,000 86.3 Duomatic Olsen HTL 80B 77 77,000 86.2 Yukon 85-1 00-1 500 58 58,000 86.2 Duomatic Olsen WTL 80A 77 77,000 86.1
81.000 to 104.000 Btu/hr Dornback HEO-90-3.5 85.5 85,500 90.8 Dornback HEO-105-4 99.75 99,750 90.0 Yukon U-90-0-03 83 83,000 89.1 Duomatic Olsen BCL 90s 89 89,000 86.5 Duomatic Olsen HTL 90B 88 88.000 86.1 Thermo Pride OL5-85-V 83 83,000 86.1 Duomatic Olsen BCL 100s 99 99,000 86.0 Duomatic Olsen WTL 1 OOA 99 99,000 86.0 Duomatic Olsen WTL 90A 89 89,000 86.0 Thermo Pride OC5-85-V 83 83.000 86.0 Thermo Pride
Duomatic Olsen Duomatic Olsen Duomatic Olsen Williamson Williamson EnerRoyal Williamson
OT5-85-V 83 83,000
BCL 120s 119 11 9,000 BCL 145s 145 145,000 WTL 105A 105 105,000 T164-15 114 11 4,000
105,000 to 135,000 BWhr
1454-1 4 118 11 81000 ER116 HB 115 11 5,000 R164-15-3,4 118 11 8,000
85.5
__ 86.7 86.0 86.0 85.6 85.5 85.2 85.0
~
MOST EFFICIENT OIL BOILERS (HOT WATER) Brand Model Btulhr AFUE
60.000 to 84.000 Btdhr Axeman-Anderson OL-91 Buderus Logana 105121 Ultimate PFO-4 Ultimate PFO-4T Tarm T902180
80,000 88.1 72,000 87.7 74,000 87.6 80,000 87.6 69,000 87.5
Axeman-Anderson OL-91 Tarm T902/91 Crown BD-74 Dunkirk 3E.60 Pennco 3K.60
80,000 86.4 79,000 86.3 74,000 86.1 74,000 86.1 74.000 86.1
Sears Roebuck & Co. 229.944331 74,000 86.1 Ford LM-70 84,000 86.0
24
I MOST EFFICIENT OIL BOILERS (HOT WATER) (cont.)
Brand Model Btulhr AFUE 85,000 to 104,000 BWhr
Buderus Logana i 05/28 96,000 87.8 Crown CTPR-3 92,000 87.6 Ultimate PFO-5 93,000 87.6 Ultimate PFOdT 99.000 87.6 Energy Kinetics Ultimate
System 2000 EK-1 104;OOO 87.5 PFO-6T 11 7,000 87.5
EnerRoyal ERO-40C 87,000 87.0
Vaillant F70, F75-40 87,000 87.0
Crown CTPR-4 130,000 87.5 Axeman-Anderson 74NPO-U 105,000 88.7 Ultimate PFO-7 130,000 87.6 Axeman-Anderson 87NPO-U 134,000 87.2 Buderus Logana 205134 11 6,000 87.2 EnerRoyal ERO-50 121,000 86.7 EnerRoyal ERO-50C 121,000 86.7
Axeman-Anderson 74NPO-U 105,000 86.5
EnerRoyal ERO-40 87,000 87.0 Thermo-Dynamics BY-75D 91,000 87.0
105,000 to 134,000 Btu/hr
Vaillant F70, F75-50 121,000 86.7 Axeman-Anderson 74NPO 133,000 86.6
MOST EFFICIENT OIL BOILERS (STEAM) Brand Model Btulhr AFUE
61,000 to 97,000 Btdhr Columbia TE-91 91,000 86.4 Columbia CSF-365 79,000 86.0 Utica SF-365 79,000 86.0
Peerless JO/JOT-TW075-S 91,000 84.2 H.B. Smith BB-14-S-3L 89,000 83.7
H.B. Smith 8-SIW-3L 91,000 85.8
Burnham v-73s 89,000 83.0 92,000 to 150,000 Btdhr
General Machine CorD. OBT75C5S 92,000 ~
86.5 Columbia Columbia Utica H.B. Smith H.B. Smith
TE-122 122,000 86.4 CSF-4100 120,000 86.0 SF-41 00 120,000 86.0 8-SIW-4L 131 1000 a-SIW-3~ 102,000
85.9 85.6 __
General Machine Corp. Slant/Fin General Machine Corp. H.B. Smith Columbia Peerless Peerless Burnham
OBTl OOC5S L3OPZ OBTl25C5S BB-14-S-4L TE-122 WBIWBV-0854 WBNVBV-125-S v-74s
121,000 85.3 134,000 84.1 148,000 83.9 144,000 122,000
83.3 83.2
101,000 83.2
125,000 82.9 149,000 83.0
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COMPARISON SHOPPING AND LIFECYCLE COSTS
The best appliance buy is not necessarily the least expensive model nor the one with the highest efficiency. Computing and comparing lifecycle costs of different models can identify the best buys. A lifecycle cost of an appliance is the combination of its purchase price and the annual operating costs over its useful lifetime. This section explains lifecycle costs and provides worksheets for your use.
To compute a lifecycle cost, you will need to know:
1. The purchase cost (the price you pay the appliance store or contractor). 2. The cost of energy (from your utility bill or your local utility). 3. The yearly energy cost to operate the appliance (obtained from the
4. The estimated lifetime of the appliance in years, given in Table 1. 5. A discount factor, a number that adjusts for inflation and for the fact that
a dollar spent today does not have the same value as a dollar spent in the future, since today’s dollar could be invested and earn interest over time. Discount factors are given in Table 1.
EnergyGuide label using your local cost of energy).
The following formula is used to calculate lifecycle costs:
LIFECYCLE - PURCHASE ESTIMATED DISCOUNT RATE ) ANNUAL
COST - PRICE + ENERGY COST LIFETIME ( Consider the following example: You want to do a lifecycle cost comparison between Refrigerator A and Refrigerator B. You call your local utility and learn that electricity costs 10 &/kWh. You look at the EnergyGuide labels on Refrigerators A and B. The Yearly Cost table toward the bottom of the EnergyGuide label shows that at an electricity price of 10 cents per kWh, Refrigerator A has an annual energy cost of $1 00 while Refrigerator B has an annual energy cost of $1 20. The price on model A is $600, and the price of model B is $520. You check Table 1 on this page to find the correct lifetime (20 years) and discount factor (0.76) for refrigerators. With this information, you can now compare the lifecycle costs of the two refrigerators:
Annual Purchase Energy Estimated Discount Lifecyle
Appliances Price cost Lifetime Factor cost Refrigerator A $600 + ( $100 X 20 X 0.76 ) = $2120 Refrigerator B $520 + ( $120 X 20 X 0.76 ) = $2344
From this calculation you learn that the refrigerator with the more expensive purchase price, model A, will actually cost you $224 less than the cheaper model over its lifetime.
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Table 1. Characteristics of Appliances for Lifecycle Cost Comparisons
Appliance Lifetime (years) Factor* Average Discount
Water Heater (gas or electric) Refrigerators and Freezers Room air conditioners Dishwashers Clothes washers
13 20 15 12 18
0.83 0.76 0.81 0.84 0.78
(*) Based on a discount rate of 5% and increases in the price of energy of 2% per year above inflation.
Use the worksheets below to compare different models of appliances you are considering.
Worksheets for computing lifecycle costs
Electricity Price C/kWh Gas e/therm (Obtain from your utility bills or call your utilities)
Annual Appliance Purchase Energy Estimated Discount Lifecycle Model Price cost Lifetime Factor cost
X x ) =
X X I =
+ (
+ (
+ ( X X ) =
+ ( X X ) =
X x ) = + (
+ ( X X ) =
X x ) = + (
+ ( X X ) =
X x ) = + (
X x ) = + (
Unfortunately, accurate lifecycle cost comparisons between different central air conditioners and furnaces must also include information concerning local climate and the condition of a home. Therefore, this procedure for computing lifecycle costs does not apply to these products.
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FOR MORE INFORMATION ACEEE also publishes the 1991 Consumer Guide to Home Energy Savings. This illustrated, 252-page book contains expanded listings of energy- efficient appliances and practical suggestions on how to reduce energy use and help protect the environment. This guide is available in bookstores, and it costs $6.95.
Most of the listings in this booklet were derived from the following product directories, available from the respective industry associations.
“1 990 Directory of Certified Refrigerators and Freezers”, Association of Home Appliance Manufacturers, Chicago, January, 1990.
“1990 Directory of Certified Room Air Conditioners”, Association of Home Appliance Manufacturers, Chicago, March 1990.
“Consumer’s Directory of: Certified Efficiency Ratings for Residential heating and Water Heating Equipment”, Gas Appliance Manufacturers Association, Arlington, VA, April, 1990.
“Directory of Certified Unitary Air Conditioners, Unitary Air-Source Heat Pumps, Sound-Rated Outdoor Unitary Equipment”, Air Conditioning and Refrigeration Institute, Arlington, VA, Feb.-July 1990.
Additional information was obtained from the California Energy Commission and the Federal Trade Commission.
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ABOUT ACEEE The American Council for an Energy-Efficient Economy (ACEEE) is a non- profit orgapization which gathers, evaluates and disseminates information to stimulate the use of energy conserving technologies and practices.
ACEEE conducts research and analyses to convert information regarding energy efficiency into forms that are useful to utilities, private companies, government officials and individual consumers. We also sponsor workshops and conferences to enhance information exchange between the various groups interested in this topic.
ACEEE IS supported by a broad variety of foundations, government organizations, research institutes, ut es and corporations.
The results of our work are available in a number of books. technical reports and consumer guides. If you would like more information about ACEEE activities and publications, please write to us:
ACEEE Suite 535 1001 Connecticut Ave. NW Washington, DC 20036
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