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In this section you can find information on ways you can save energy both at home and when using transportation. This section includes listings of Energy Star appliances and products as well as tips on convserving energy.

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The EB team is happy to answer any questions we can about alternative energy.  Just contact us at editor@energybible.com.

energy efficiency of central air conditioners and heat pumps

For those of you living in warmer climates a central air conditioning unit maybe the single biggest source of energy consumption in your home.  For this reason it is one of the best places to begin when trying to reduce your energy costs. This is true for businesses as well.  According to the EPA about one-seventh of all the electricity generated in the US is used to air condition buildings. Heating and cooling costs the average homeowner about $1,000 a year - nearly half the home's total energy bill. If your central air conditioning unit is more than 12 years old, there is a good chance that replacing it with an ENERGY STAR qualified model could cut your cooling costs by as much as 30%

There are several different metrics used to measure the efficiency of air conditioning units. These are summarized below:

  • Seasonal Energy Efficiency Ratio (SEER) - Central air conditioning units are usually measured using a ratio called SEER.  In technical terms, SEER is a measure of equipment the total cooling of a central air conditioner or heat pump (in Btu) during the normal cooling season as compared to the total electric energy input (in watt-hours) consumed during the same period. New requirements took effect in 2006 which raised the SEER requirement by 20%. The higher the SEER number the more efficient the unit is. The most efficient models will have a SEER number of 14.5 or greater.
  • Energy Efficiency Ratio (EER) - is a measure of how efficiently a cooling system will operate when the outdoor temperature is at a specific level (95oF). The higher the EER, the more efficient the system. This metric represents the cooling output divided by the power input for a hypothetical average U.S. climate.
  • Heating Seasonal Performance Factor (HSPF) - is the efficiency measurement used to gauge the efficiency of the heating mode of heat pumps. The higher the number, the greater the efficiency and cost-savings. Today's models of heat pumps are required to have a 6.8 HSPF

The table below provides SEER ratings for both central air conditioners and air source heat pumps. Both SEER and EER are included in the ENERGY STAR specification because each rating indicates the energy efficiency of the product under different operating modes. SEER rating more accurately reflects overall system efficiency on a seasonal basis and EER reflects the system’s energy efficiency at peak day operations. Both ratings are important when choosing a product. Heat Seasonal Performance Factor (HSPF) is the most commonly used measure of a heat pumps heating efficiency. The higher the HSPF, the more efficient the heat pump. In technical term, HSPF represents the total heating output of a heat pump (including supplementary electric heat) during the normal heating season (in Btu) as compared to the total electricity consumed (in watt-hours) during the same period. HSPF is based on tests performed in accordance with AHRI 210/240 (formerly ARI Standard 210/240)1.

Keep in mind that even an efficient air conditioning unit will waste a great deal of energy if it is bigger than what your home actually requires.  Make sure your contractor does a complete load calculation so you know exactly how big a unit to get.  Also, don't be penny wise and pound foolish.  When installing a new air conditioning unit be sure to look at getting the most up-to-date thermostat you can find to go with it.  Modern thermostats with digital timers allow for very precise scheduling of your home temperature and can ensure that you don't waste a lot of energy cooling the rooms when no one is there.

Sometimes finding a heating and air conditioning contractor who really understands energy considerations is difficult. A great resource to go to in that case is the Air Conditioning Contractors of America (ACCA) web site at ww.acca.org.  On their site you can find a Contractor Locator which includes a special designation to identify contractors who sell and are knowledgeable about ENERGY STAR qualified HVAC equipment. 

Non-AHRI Central Air Conditioner Equipment and Air Source Heat Pump (ASHP) Product List

List Posted August 2, 2010

Brand Model Number Indoor Unit Model Number* Product Type SEER EER HSPF Capacity (Btuh)
C2 GWH12MB-A3DNA4A/O GWH12MB-A3DNA4A/I ASHP - Split System 20 12 10 12000
C2 GWH24MD-D3DNA4A/O GWH24MD-D3DNA4A/I ASHP - Split System 18 12 10.2 21500
AmericAire Beginnning with ACDE09HP220   ASHP - Split System 15.5 13 8.9 18,000
AmericAire Beginnning with ACDE12HP220   ASHP - Split System 16.5 13 9.5 24,000
AmericAire Beginnning with ACE09HP110I   ASHP - Split System 19 13.5 9 11,000
AmericAire Beginnning with ACE12HP110I   ASHP - Split System 20 13.5 9.5 15,500
AmericAire Beginnning with ACE18HP220I   ASHP - Split System 18 13 9 20,500
AmericAire Beginnning with ACE24HP220I   ASHP - Split System 16 13 10 28,000
ARTFUL GWH09AB-D3DNA1B/O GWH09AB-D3DNA1B/I ASHP - Split System 23 14.35 9.80 9,000
ARTFUL GWH12AB-D3DNA1B/O GWH12AB-D3DNA1B/I ASHP - Split System 22 12.5 10.50 12,000
COZY GWH09MA-D3DNA1A/O GWH09MA-D3DNA1A/I ASHP - Split System 22 14.2 9.80 9,000
COZY GWH12MB-D3DNA1A/O GWH12MB-D3DNA1A/I ASHP - Split System 20 12.5 9.60 12,000
Gree GWH12MB-A3DNA1A/O GWH12MB-A3DNA1A/I(** can be A1 to A9,B1,B2,B3,B7,B8,C1) ASHP - Split System 20 12 10.00 12,000
Gree GWH12AB-A3DNA1B/O GWH12AB-A3DNA1B/I ASHP - Split System 20 12 10.00 12,000
Gree GWC12MB-A3DNA1A/O GWC12MB-A3DNA1A/I(** can be A1 to A9,B1,B2,B3,B7,B8,C1) CAC - Split System 20 12   12,000
Gree GWC12AB-A3DNA1B/O GWC12AB-A3DNA1B/I CAC - Split System 22 12   12,000
Gree GWH18MC-D3DNA1A/O GWH18MC-D3DN**A/I (** Can be A1 to A9,B3) ASHP - Split System 18 12 10.20 18,000
Gree GWH18AC-D3DNA1B/O GWH18AC-D3DN**B/I (** Can be A1 to A3) ASHP - Split System 20 12 10.50 18,000
Gree GWC18MC-D3DNA1A/O GWC18MC-D3DN**A/I (** Can be A1 to A9,B3) CAC - Split System 18 12   18,000
Gree GWC18AC-D3DNA1B/O GWC18AC-D3DN**B/I (** Can be A1 to A3) CAC - Split System 20 12   18,000
Gree GWH24MD-D3DNA1A/O GWH24MD-D3DN**A/I (** Can be A1 to A9,B3) ASHP - Split System 18 12 10.2 21,500
Gree GWH24AC-D3DNA1B/O GWH24AC-D3DN**B/I (** Can be A1 to A3) ASHP - Split System 19 12 10.5 22,000
Gree GWC24MD-D3DNA1A/O GWC24MD-D3DN**A/I (** Can be A1 to A9,B3) CAC - Split System 18 12   21,500
Gree GWC24AC-D3DNA1B/O GWC24AC-D3DN**B/I (** Can be A1 to A3) CAC - Split System 19 12   22,000
Gree GWH09MA-A3DNA1A/O GWH09MA-A3DN**A/ (** can be A1 to A9,B1,B2,B3,B7,B8,C1) ASHP - Split System 22 14 9.80 9,000
Gree GWH09AB-A3DNA1B/O GWH09AB-A3DNA1B/I ASHP - Split System 23 14 9.80 9,000
Gree GWC09MA-A3DNA1A/O GWC09MA-A3DN**A/I (** can be A1 to A9,B1,B2,B3,B7,B8,C1) CAC - Split System 22 14   9,000
Gree GWC09AB-A3DNA1B/O GWC09AB-A3DNA1B/I CAC - Split System 23 14   9,000
Gree GWC09MA-D3DNA1A/O GWC09MA-D3DN**A/I (** can be A1 to A9,B1,B2,B3,B7,B8,C1) CAC - Split System 22 14.2   9,000
Gree GWC09AB-D3DNA1B/O GWC09AB-D3DNA1B/I CAC - Split System 23 14.35   9,000
Gree GWC12MB-D3DNA1A/O GWC12MB-D3DN**A/I (** can be A1 to A9,B1,B2,B3,B7,B8,C1) CAC - Split System 20 12.5   12,000
Gree GWC12AB-D3DNA1B/O GWC12AB-D3DNA1B/I CAC - Split System 22 12.5   12,000
Gree GWHD12A6ND31A/O GWHD12A6ND31A/I ASHP - Split System 14.5 12 8.2 12,000
Acadia Acadia 024 AVG24B3XH21 ASHP - Split System 15.5 14.4 9.42 24,000
Acadia Acadia 036 AVG36C3XH21 ASHP - Split System 15.2 12.6 9.2 36,000
Inverter IN312C2V31 IN312C2V31 CAC - Split System 14.5 12.3   11,600
Inverter IN414C2V31 IN414C2V31 CAC - Split System 21 17.1   13,450
Inverter IN520C2V31 IN520C2V31 CAC - Split System 16.25 13.5   22,950
Inverter IN625C2V31 IN625C2V31 CAC - Split System 17.1 14.4   28,700
Themoclim CS-35V1A-E2 CS-35V1A-P75A ASHP - Split System 20 13.5 9.5 12,000
Manuflow KFR-35GW/BM   ASHP - Split System 16.3 12.1 10 12,000
Manuflow KFR-50GW/BM   ASHP - Split System 16.5 12 12 18,000
Manuflow KFR-25GW/BM   ASHP - Split System 16 12.3 8.7 9,000
Shinco KFR-25GW/BM   ASHP - Split System 16 12.3 8.7 9,000
Shinco KFR-50GW/BM   ASHP - Split System 16.5 12 12 18,000
Shinco KFR-35GW/BM   ASHP - Split System 16.3 12.1 10 12,000
Shinco KFR-50W/BM KFR-50G/BM ASHP - Split System 15.6 12 8.3 18,000
Shinco KFR-25W/BM KFR-25G/BM ASHP - Split System 15.3 12.3 8.2 9,000
Shinco KFR-25GW/BMVE KFR-25GW/BMVE ASHP - Split System 18.2 13.3 9.3 9,000
Shinco KFR-35GW/BMVE KFR-35GW/BMVE ASHP - Split System 18.1 13 9 12,000
Shinco KFR-50GW/BMVE KFR-50GW/BMVE ASHP - Split System 17.9 12.8 8.9 18,000
Wintair AS-12UR1SWLUH AS-12UR1SWLUH ASHP - Split System 16 12 9 12,000
Wintair AS-12UR1SWLUP AS-12UR1SWLUP ASHP - Split System 16 12 9 12,000
Wintair AS-12UR1SWLVB AS-12UR1SWLVB ASHP - Split System 16 12 9 12,000
Wintair AS-12UR1SWTVC AS-12UR1SWTVC ASHP - Split System 16 12 9 12,000
Manuflow MOC-12HFN1-MTOW MSV1-12HRFN1- MT0W ASHP-Split System 19.3 12.14 8.9 12,000
Manuflow MSV1-18HRDN1-MQ0W MSV1-18HRDN1-MQ0W ASHP-Split System 17.66 12.02 9.54 18,000
Midea MSV1-18HRDN1-MQ0W MSV1-18HRDN1-MQ0W ASHP - Split System 17.66 12.02 9.54 18,000
Midea MOC-12HFN1-MTOW MSV1-12HRFN1- MT0W ASHP - Split System 19.3 12.14 8.9 12,000
NRG Equipment 12KHN71-O 12KHN71-I ASHP - Split System 20 12 10 12,000
NRG Equipment 24KHN72-O 24KHN72-I ASHP - Split System 18 12 10.2 21,500
Turbo Air TAS-09EH TAS-09EH/O ASHP - Split System 19 13.5 9 9,000
Turbo Air TAS-12EG TAS-12EG/O ASHP - Split System 20 13.5 9.5 12,000
Turbo Air TAS-18EH TAS-18EH/O ASHP - Split System 18 13 9 18,000
Hydro Confort HQ09IVAC/H   ASHP - Split System 19 13.5 9 9,000
Hydro Confort HQ12IVAC/H   ASHP - Split System 20 13.5 9.5 12,000
Hydro Confort HQ18IVAC/H   ASHP - Split System 18 13 9 18,000
Mr. Sleep MSA-09IV/H   ASHP - Split System 19 13.5 9 9,000
Mr. Sleep MSA-12IV/H   ASHP - Split System 20 13.5 9.5 12,000
Mr. Sleep MSA-18IV/H   ASHP - Split System 18 13 9 18,000
YMGI WMMS-09C-V2A(48) WMMS-09E-V2A(48) ASHP - Split System 19 13.5 9 9,000
YMGI WMMS-12C-V2A(48) WMMS-12E-V2A(48) ASHP - Split System 20 13.5 9.5 12,000
YMGI WMMS-18C-V2B(48) WMMS-18E-V2B(48) ASHP - Split System 18 13 9 18,000
YMGI WMMS-09C-V2A(58) WMMS-09E-V2A(58) ASHP - Split System 22 14 9.8 9000
YMGI WMMS-12C-V2A(58) WMMS-12E-V2A(58) ASHP - Split System 20 12 10 12000
YMGI WMMS-18C-V2A(58) WMMS-18E-V2B(58) ASHP - Split System 18 12 10.2 18000
YMGI WMMS-24C-V2A(58) WMMS-24E-V2B(58) ASHP - Split System 18 12 10.2 21500

 

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