Performance Column
Seasonal Energy Efficiency Ratio (SEER2): Shown in British thermal units per watt-hour (Btu/Wh).
Heating Season Performance Factor (HSPF2): Shown in British thermal units per watt-hour (Btu/Wh).
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Annual Energy Use: Based on the test method referenced in 10 CFR 430, Subpart B, Appendix M for a 36,000 Btu/h residential air-source heat pump operated 1,400 cooling mode hours and 1,400 heating mode hours per year.
Annual Energy Cost: Calculated based on an assumed electricity price of 8.6¢/kWh, which is the average electricity price at federal facilities throughout the United States.
Lifetime Energy Cost: The sum of the discounted values of annual energy cost with an average residential air-source heat pump life of 15 years. Future electricity price trends and a 3% discount rate are from Annual Supplement to NIST Handbook 135 and NBS Special Publication 709, Energy Price Indices and Discount Factors for Life Cycle Cost Analysis – 2022 (NISTIR 85-3273-37 update 1).
Lifetime Cost Savings: The difference between the lifetime energy cost of the less efficient model and the lifetime energy cost of the ENERGY STAR model or best available model.
Best Available Model Column
Calculated based on the December 2022 List of Certified ENERGY STAR Products; values shown are rounded to the nearest dollar. More efficient models may be introduced to the market after FEMP's acquisition guidance is posted.
ENERGY STAR Model Column
Calculated based on current ENERGY STAR efficiency levels; values shown are rounded to the nearest dollar. Federal agencies must purchase products that meet or exceed ENERGY STAR efficiency levels.
Less Efficient Model Column
Calculated based on typical products used in non-federal applications.
Proper Sizing
Installing properly sized HVAC equipment for your home is essential to getting the best performance and comfort. A system that is either too large or too small for its intended space will struggle to meet your home comfort needs. Your HVAC contractor can help determine what size system is right for your home. Your contractor should verify the proper size system for your home using a tool called "Manual J" – a calculation of the amount of heating and cooling your home requires to keep you warm in the winter and cool in the summer.
Dual Fuel
If you have a relatively new furnace with an older central AC, or if you are planning to add a new central AC to the furnace, consider an ENERGY STAR certified heat pump. This creates a dual-fuel system for a modest extra cost over an AC system. Dual fuel systems allow for the flexibility of heating with a heat pump or with a more traditional gas or oil furnace and enables you to use each system optimally based on costs and environmental benefits.
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Cold Climate Considerations
Many new ENERGY STAR certified ASHPs excel at providing space heating even in the coldest of climates, as they use advanced compressors and refrigerants that allow for improved low temperature performance. If you live in a climate where winter temperatures regularly dip below freezing, talk to your contractor to choose an ENERGY STAR unit suited to your particular home. When you ask your contractor for an ENERGY STAR certified cold climate ASHP, you can be confident that your new AHSP system will deliver the heating performance and efficiency benefits you expect on even the coldest winter days. A good contractor will work with you to determine the size and potential integration with a back-up heating system that will work best for your home.
Climate ASHP technology has improved significantly over the past several years, and many ASHP systems are capable of delivering heating capacity and efficiency at low outdoor temperatures. The ENERGY STAR certification requires third-party verified performance for low temperatures, testing ASHPs down to 5°F. Testing cold climate ASHP performance at 5°F ensures that your ASHP will provide all the heat you need to keep your home comfortable all winter. Your cold climate ASHP will continue working at temperatures below 5°F, but pairing it with a back-up energy source will heat your home the most efficiently when temperatures are even lower.
Take Advantage of Incentives
Air source heat pumps that earn the ENERGY STAR are eligible for a federal tax credit up to $2,000. This tax credit is effective for products purchased and installed between January 1, 2023, and December 31, 2032. Learn more at www.energystar.gov/taxcredits. Many utilities also offer incentives for installing ENERGY STAR certified ASHPs. Check with your local utility for more details or go to: www.energystar.gov/rebatefinder.
What else should I look for when buying an air-source heat pump?
If you've decided that you need to purchase a new air-source heat pump, learn how to hire a contractor. Remember, even though these products can be more expensive to purchase up front, the cost difference will be paid back over time through lower energy bills. Consider regular maintenance of your heating and cooling system to prevent future problems and unwanted costs. ASHPs are one of six high-impact improvements to your home that work together to deliver significant energy and cost savings. Learn more about additional improvements with the ENERGY STAR Home Upgrade.
How to Find Certified Equipment
Be sure to look for the ENERGY STAR when shopping for an air-source heat pump. Use the ENERGY STAR Product Finder to help you identify high efficiency equipment that meets the latest ENERGY STAR certification criteria and then work with a professional installer to find the model that is right for you. ENERGY STAR offers tips on how to hire a contractor.
Air-source heat pumps originally qualified for the ENERGY STAR label in April, 1995.
Current Requirements effective date: January 1, 2023
Air-Source Heat Pumps and Central Air Conditioners Key Product Criteria: ENERGY STAR
Learn How a Product Earns the Label
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