Quick answer
An ENERGY STAR HVAC rating is the U.S. EPA’s voluntary certification for heating and cooling equipment that is tested by an EPA-recognized lab and meets efficiency levels set above the federal minimum, such as 15.2 SEER2 for central air conditioners and heat pumps.
It is a pass or fail mark, not a score. Each product type has its own criteria, and a cold-climate tier exists for heat pumps.
Quick facts
The key facts about ENERGY STAR HVAC Rating, with sources:
- Run by
- U.S. Environmental Protection Agency, with DOE 1
- Central AC and heat pump spec
- Version 6.2 (rev. March 2025) 1
- Split central AC
- 15.2 SEER2 and 12.0 EER2 or higher 1
- Cold-climate heat pump
- 8.1 HSPF2 ducted / 8.5 ductless, COP 1.75 at 5°F, 70% capacity at 5°F 1
- Gas furnace
- 97% AFUE North, 95% South; 2.0% or less air leakage 3
Key takeaways
- ENERGY STAR is a pass mark. Equipment either meets the EPA criteria for its type or it does not.
- For central air conditioners and heat pumps the bar is 15.2 SEER2, compared with a federal floor of 13.4 to 14.3 1 5.
- Heat pumps can also earn a cold-climate designation with tests at 5°F 1.
- The label rates the equipment, not the install. Ducts and sizing still decide real results.
- Many rebates use ENERGY STAR as their floor. The federal 25C tax credit, which used related tiers, expired for equipment placed in service after 31 December 2025 6.
What the ENERGY STAR label means on HVAC
ENERGY STAR is a program of the U.S. Environmental Protection Agency. For each product category, EPA writes a specification with efficiency levels above the federal minimum. A model that meets them, and is tested by an EPA-recognized lab and certified by an approved body, can carry the blue label 1.
There is no ENERGY STAR "score." The rating is the criteria themselves. For HVAC, those are written in the same metrics the federal rules use: SEER2, EER2 and HSPF2 for central air conditioners and heat pumps, AFUE for furnaces and boilers, and COP and EER for geothermal systems.
The current central air conditioner and heat pump specification is Version 6.2, revised March 2025. It requires that the SEER2 and HSPF2 ratings match the levels reported to DOE and shown on the FTC EnergyGuide label 1.
Sources: [1]
How a product earns the label
- EPA publishes the specification for the product type.
- The maker has the model tested in an EPA-recognized laboratory, using the federal test (Appendix M1 for central systems).
- An EPA-recognized certification body reviews the results.
- The model is listed on the ENERGY STAR product finder and may carry the label.
- Certified models are subject to ongoing verification testing.
For split systems, ENERGY STAR certifies the matched outdoor and indoor combination, the same way AHRI lists it 1.
ENERGY STAR HVAC criteria by product
| Product | ENERGY STAR level | Federal floor for comparison |
|---|---|---|
| Split central AC | 15.2 SEER2, 12.0 EER2 | 13.4 SEER2 North; 14.3 South |
| Packaged central AC | 15.2 SEER2, 11.5 EER2 | 13.4 SEER2 |
| Split heat pump | 15.2 SEER2, 11.0 EER2, 7.8 HSPF2 | 14.3 SEER2, 7.5 HSPF2 |
| Packaged heat pump | 15.2 SEER2, 10.0 EER2, 7.2 HSPF2 | 13.4 SEER2, 6.7 HSPF2 |
| Gas furnace | 97% AFUE (North), 95% (South) | 80% AFUE |
| Oil furnace | 87% AFUE | 83% AFUE |
| Geothermal, closed-loop water-to-air | 17.1 EER, 3.6 COP | No federal standard for this class |
Federal minimum, ENERGY STAR and cold-climate, rating by rating
| Rating | Federal minimum | ENERGY STAR | ENERGY STAR cold climate (ducted) | What the rating cannot tell you |
|---|---|---|---|---|
| SEER2 (seasonal cooling) | 14.3 | 15.2 | 15.2 | Peak-heat and humidity performance |
| EER2 (95°F cooling) | Southwest AC only | 11.0 | Not set | Mild-day savings |
| HSPF2 (seasonal heating) | 7.5 | 7.8 | 8.1 | Output below 17°F |
| COP at 5°F | Not set | Not set | 1.75 | A whole season |
| AFUE (gas furnace) | 80% | 95–97% | n/a | Duct losses, blower power |
Example: does this quote qualify?
A quote lists a split heat pump pair rated 16.0 SEER2, 11.5 EER2 and 8.0 HSPF2 on its AHRI certificate (example figures). Check it against Version 6.2 1.
| Test | Required | Quote | Pass? |
|---|---|---|---|
| SEER2 | 15.2 or more | 16.0 | Yes |
| EER2 | 11.0 or more | 11.5 | Yes |
| HSPF2 | 7.8 or more | 8.0 | Yes |
| Cold-climate HSPF2 (ducted) | 8.1 or more | 8.0 | No |
| COP at 5°F | 1.75 or more | Check spec sheet | Unknown |
This pair earns ENERGY STAR but not the cold-climate designation. If a rebate requires cold-climate certification, it would not qualify. Confirm on the ENERGY STAR product finder, not the brochure.
Where you will see ENERGY STAR on HVAC
- On the EnergyGuide label or carton, as the blue ENERGY STAR mark.
- On the ENERGY STAR product finder, which lists certified pairs.
- On AHRI certificates, beside the ratings that decide it 7.
- On rebate forms, often as "ENERGY STAR certified" or "ENERGY STAR cold climate."
- On smart thermostats and ductless systems, which have their own ENERGY STAR categories.
What the label is good for
Benefits
- A quick check that equipment beats the federal floor by a set margin.
- Third-party lab testing and ongoing verification.
- A common rebate gate, so it simplifies paperwork.
- A cold-climate tier that adds tests at 5°F that the federal rules lack.
Limits
- Pass or fail: a unit at 15.2 SEER2 and one at 22 both qualify.
- Rates equipment only, not ducts, sizing or install.
- Criteria change over time; an older label may not meet today’s spec.
- The furnace spec splits North and South, so a 95% furnace qualifies in one region only.
What ENERGY STAR does not cover
The label cannot fix a bad install. NIST lists duct leakage, refrigerant undercharge, undersized ducts and low airflow as the faults that most raise heat pump energy use 8. An ENERGY STAR system with those faults can do worse than a basic one installed well.
Version 6.2 also leaves some products out. Three-phase units and those rated at 65,000 BTU/h or more fall under the light commercial spec, and ground-source heat pumps have their own spec 1.
Cost drivers and incentives
Meeting ENERGY STAR usually means two-stage or variable-speed compressors, larger coils and better fan motors. Those add to the price. Rebates may offset part of it, so check the rebate finder.
The federal Energy Efficient Home Improvement Credit (25C) covered property placed in service before 31 December 2025 6. Do not plan on it for a 2026 install. See the federal tax credit status page.
HyreHVAC publishes no equipment prices without enough dated quotes. The HVAC cost calculator shows what drives the total.
Sources: [6]
How to confirm ENERGY STAR on a quote
- Get model numbers for every part of the system.
- Ask for the AHRI reference number.
- Search the pair on the ENERGY STAR product finder.
- Check whether you need plain ENERGY STAR or the cold-climate designation for your rebate.
- Keep the AHRI certificate and product finder printout with your invoice.
Keeping ENERGY STAR efficiency after install
- Check filters monthly and replace when dirty 9.
- Schedule a spring cooling check and a fall heating check 9.
- Keep the outdoor unit clear of plants, snow and debris.
- Use a smart or programmable thermostat with moderate setbacks.
Sources: [9]
Red flags with ENERGY STAR claims
- A quote says "ENERGY STAR" but the indoor coil is not named. The pair decides the rating.
- The outdoor unit qualifies only with a different, pricier indoor coil than the one quoted.
- A contractor promises the 25C credit for a 2026 install. It ended for property placed in service after 2025.
- An old brochure quotes SEER instead of SEER2.
Who sets the criteria
EPA writes ENERGY STAR specifications; they are voluntary. DOE sets the mandatory minimums in 10 CFR 430.32 5. The central AC and heat pump spec is Version 6.2, which cites the federal Appendix M1 test and rounds ratings to the nearest 0.025 1.
Furnace criteria: 97% AFUE North, 95% South for gas, 87% for oil, and 2.0% or less air leakage 3. Geothermal criteria have been in effect since 1 January 2012 4.
ENERGY STAR misconceptions
- Myth ENERGY STAR means the most efficient unit available.
- Reality It means above a set bar. Many models beat it by a wide margin.
- Myth All ENERGY STAR heat pumps work well in cold climates.
- Reality Only the cold-climate designation adds 5°F tests.
- Myth An ENERGY STAR system qualifies for a federal tax credit in 2026.
- Reality The 25C credit ended for property placed in service after 2025.
- Myth The outdoor unit is ENERGY STAR on its own.
- Reality Split systems are certified as matched pairs.
Regional rules inside ENERGY STAR
ENERGY STAR’s gas furnace levels differ by region: 97% AFUE in the North, 95% in the South 3. Cold-climate heat pump certification targets colder states such as Ohio and eastern Washington. State and utility rebates add their own rules; see the state guides.
Do you need ENERGY STAR?
If a rebate requires it, yes. Otherwise, treat ENERGY STAR as a floor worth meeting and compare the underlying ratings above it. In cold climates, ask for the cold-climate designation or at least the 5°F numbers.
Next step: check eligibility on the does my system qualify page, then compare shortlisted units on our heat pump list.
Questions about ENERGY STAR HVAC Rating
What SEER2 is ENERGY STAR?
ENERGY STAR central air conditioners and air-source heat pumps need at least 15.2 SEER2 under Version 6.2 of the specification. Split air conditioners also need 12.0 EER2, and split heat pumps need 11.0 EER2 and 7.8 HSPF2. Packaged units have slightly lower EER2 and HSPF2 levels.
Is ENERGY STAR worth it for HVAC?
Often, if rebates require it or your seasons are long. ENERGY STAR units use less energy than federal-minimum units, but the gain depends on your hours of use and your install. In mild climates the savings are modest. Check rebates and run the numbers before paying extra.
What is the ENERGY STAR cold climate designation?
It is an extra tier for heat pumps that work well in cold weather. It requires at least 8.1 HSPF2 for ducted and single-package systems or 8.5 for ductless, a COP of 1.75 or more at 5°F, and at least 70% of rated heating capacity at 5°F. It also requires a controls check.
What AFUE does ENERGY STAR require for furnaces?
Gas furnaces need 97% AFUE or more in the U.S. North and 95% or more in the South. Oil furnaces need 87% or more. All must have air leakage of 2.0% or less. The federal minimum for indoor gas furnaces is 80% today.
Does ENERGY STAR still qualify for a tax credit?
Not under 25C for new installs. The IRS says the Energy Efficient Home Improvement Credit covers property placed in service before 31 December 2025. Rebates from states and utilities may still use ENERGY STAR as a requirement. Check the federal tax credit page and your utility for current offers.
How do I check if my HVAC is ENERGY STAR certified?
Search the outdoor and indoor model numbers on the ENERGY STAR product finder, or ask your contractor for the AHRI reference number and check it there. Split systems are certified as matched pairs, so the indoor coil or air handler must match too.
What is ENERGY STAR Most Efficient?
It is a separate EPA recognition for the top-performing models in a category, on top of regular ENERGY STAR. Its criteria are updated over time and cover selected HVAC categories. Check EPA’s Most Efficient page for the current year’s list before relying on it for a rebate.
Do ductless mini-splits get ENERGY STAR ratings?
Yes. Ductless systems are covered by the same central AC and heat pump specification, and ENERGY STAR has a ductless heating and cooling page. Non-ducted split heat pumps need 8.5 HSPF2 for the cold-climate designation, higher than ducted systems.
Sources
- ENERGY STAR, Product Specification for Central Air Conditioner and Heat Pump Equipment, Version 6.2 (rev. March 2025), retrieved .
- ENERGY STAR, Air-Source Heat Pumps key product criteria, retrieved .
- ENERGY STAR, Furnaces key product criteria, retrieved .
- ENERGY STAR, Geothermal Heat Pumps key product criteria, retrieved .
- eCFR, 10 CFR 430.32 Energy and water conservation standards (current text), retrieved .
- IRS, Energy Efficient Home Improvement Credit (25C), retrieved .
- AHRI Directory of Certified Product Performance, retrieved .
- NIST Technical Note 1848, Sensitivity Analysis of Installation Faults on Heat Pump Performance (2014), retrieved .
- ENERGY STAR, Maintenance Checklist for heating and cooling, retrieved .
Expert review
Written by the HyreHVAC Research team. Not yet reviewed by an outside expert. We say so rather than imply a review that has not happened; see our editorial policy.
How the numbers were checked: Criteria copied from the ENERGY STAR Version 6.2 specification PDF (text extracted and read 10 October 2026) and the furnace and geothermal criteria pages; federal floors from 10 CFR 430.32; 25C status from the IRS page. The qualifying example uses labelled hypothetical ratings.
Suggest a correction. We fix errors and say what changed.