R-32 heat pumps
The other A2L refrigerant now shipping in residential equipment.
Data current as of July 12, 2026 · 1,561 certified units · source AHRI + ENERGY STAR
The two numbers that decide a heat pump at this size
What it costs to deliver heat. Across these 1,561 certified units the computed cost runs $13.45 to $25.45 per MMBtu — the least efficient costs 89% more to run than the most, for the same heat. Over a 40 MMBtu heating season — the moderate-climate default our operating-cost calculator uses, and where you can put your own load in — that is $538 against $1,018, a gap of $480 a year.
Whether it still delivers when it is cold. COP at 5°F runs 1.70 to 2.80 here. A COP of 1.0 is a plain electric heater, so a unit near 1.70 has almost stopped being a heat pump on the coldest night — exactly when the bill is largest. 1,333 of these (85%) carry the cold-climate designation. This is the number to sort on if your winters bite, and it is not the same ranking as HSPF2.
$/MMBtu is computed from certified HSPF2 and EIA average electricity prices; the formula is in our methodology. Install ranges are US national typical for a like-for-like ducted swap, compiled 2026-07-16, and exclude ductwork, electrical upgrades and backup heat.
Highest HSPF2 in this group
Fujitsu AOUH09KTAP1
HSPF2 14.0 · still delivers 17,000 BTU at 5°F · $13.45 per MMBtu to run.
See installed costs →HSPF2 is the seasonal heating efficiency rating — heat delivered per unit of electricity across a whole season. Higher is cheaper to run.
The 20 highest-HSPF2 of 1,561 certified units
| Brand & model | HSPF2 | Capacity | Heat at 5°F | $/MMBtu | Buy | |
|---|---|---|---|---|---|---|
| Fujitsu AOUH09KTAP1 | 14.0 | 1 ton | 17,000 BTU | $13.45 | Get quotes | |
| Fujitsu AOUH12KTAP1 | 13.7 | 1 ton | 16,200 BTU | $13.74 | Get quotes | |
| GE Appliances MWHQ036NC2AA* | 13.5 | 3 ton | 39,000 BTU | $13.95 | Get quotes | |
| LG KUSAL091A | 13.5 | 1 ton | 12,000 BTU | $13.95 | Get quotes | |
| Fujitsu AOUH09KZAH1 | 13.3 | 1 ton | 15,400 BTU | $14.16 | Get quotes | |
| Fujitsu AOUH15KTAP1 | 13.0 | 1 ton | 18,400 BTU | $14.48 | Get quotes | |
| Fujitsu AOUH12KZAH1 | 12.7 | 1 ton | 16,600 BTU | $14.83 | Get quotes | |
| Fujitsu AOUH15KZAH1 | 12.7 | 1 ton | 21,000 BTU | $14.83 | Get quotes | |
| Fujitsu AOUH09KMAS1 | 12.6 | 1 ton | 10,300 BTU | $14.94 | Get quotes | |
| Fujitsu AOUH18KZAH1 | 12.5 | 1.5 ton | 24,800 BTU | $15.06 | Get quotes | |
| Panasonic CU-2Z18ABUC | 12.5 | 1.5 ton | 22,000 BTU | $15.06 | Get quotes | |
| Hitachi PAS-24BLFASDQ1 | 12.2 | 2 ton | 27,600 BTU | $15.43 | Get quotes | |
| Hitachi RAC-XJ09WHAA | 12.0 | 1 ton | 9,000 BTU | $15.69 | Get quotes | |
| Panasonic CS-XZ15AKUAW/CU-XZ15AKUAC | 12.0 | 1 ton | 15,300 BTU | $15.69 | Get quotes | |
| Panasonic CS-XZ9AKUAW/CU-XZ9AKUAC | 12.0 | 0.5 ton | 11,700 BTU | $15.69 | Get quotes | |
| Panasonic CS-Z15AKUAW/ CU-XZ15AKUAC | 12.0 | 1 ton | 15,300 BTU | $15.69 | Get quotes | |
| Panasonic CS-Z9AKUAW/CU-XZ9AKUAC | 12.0 | 0.5 ton | 11,700 BTU | $15.69 | Get quotes | |
| Panasonic CU-XZ15AKUAC | 12.0 | 1 ton | 15,300 BTU | $15.69 | Get quotes | |
| Panasonic CU-XZ9AKUAC | 12.0 | 0.5 ton | 11,700 BTU | $15.69 | Get quotes | |
| Hitachi PAS-30BLFASDQ1 | 12.0 | 2.5 ton | 32,800 BTU | $15.69 | Get quotes |
Showing the top 20 by HSPF2. All 1,561 certified units in this group are filterable in the full database — we rank here rather than dump, because a table nobody can read is not a resource.
Capacity and efficiency are AHRI-certified values; $/MMBtu is computed by us from EIA energy prices — see methodology. Heat at 5°F is the number that decides whether a heat pump keeps up in real cold, and most listings omit it.