What SEER2 Do Certified Heat Pumps Actually Have? (2026)

Across 298,647 ENERGY STAR–certified air-source heat pump models, the median unit is rated SEER2 16.4 / HSPF2 8.5, 55.1% are cold-climate rated, and R-454B is now the dominant refrigerant at 81.3% of models. Size your own system in the HVAC cost calculator.

298,647 certified models · updated July 19, 2026

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SEER2 & HSPF2 percentiles

Percentile bands across all 298,647certified models (overall — the committed dataset doesn't carry percentiles split by product type; see the product-type counts below).

SEER2 and HSPF2 percentile bands (p10, p25, median, p75, p90) across all ENERGY STAR certified air-source heat pump models, 2026.

HSPF2	7.8	8.1	8.5	9	9.5
SEER2	15.2	15.5	16.4	18	19.5

Certified models by product type

Count and share of ENERGY STAR certified models by product type (ducted split system, single package, mini/multi-split), 2026.

HP - Single Package	850	0.3%
HP - Mini or Multi Split	17,119	5.7%
HP - Split System	280,678	94.0%

Refrigerant mix

GWP (global warming potential) is parsed from the certified-products data's verbatim refrigerant field; “—” where a model's listing carries no GWP value.

Refrigerant mix (share of certified models) and each refrigerant's GWP, 2026.

R-32	675	1.8%
R-410A	2,088	16.9%
R-454B	470	81.3%

Cold-climate & Most Efficient shares

Share of ENERGY STAR certified models that are cold-climate rated or meet the Most Efficient criteria, 2026.

Cold-climate rated	55.1%
Meets Most Efficient criteria	45.7%

Methodology & sources

Source dataset: ENERGY STAR certified products data — Air-Source Heat Pumps (data.energystar.gov, w7cv-9xjt), refreshed from the EPA's daily-updated certified-products dataset; page updated July 19, 2026. Percentiles use linear interpolation over every certified model's SEER2/HSPF2 rating, rounded to one decimal. “Cold-climate rated” and “Most Efficient” shares come straight from ENERGY STAR's own certification flags on each listing.

These are the exact percentile bands behind the tier bands (standard, high, premium) in our HVAC cost calculator: standard is SEER2 14.3–15.9, high is 16–18.4, and premium is 18.5 and up — so this report and the calculator's certified-models picker can never disagree. Full detail is on the methodology and data sources pages.

Data updated July 19, 2026

Cite this dataset

Ballpark Lab. “What SEER2 Do Certified Heat Pumps Actually Have? (2026).” Updated July 19, 2026. ballparklab.com/reports/certified-heat-pumps-2026

Free to reuse with attribution (CC BY 4.0) — a link back to this page is all we ask.