Heat pumps, rated at 5°F
How much heat does a certified heat pump still list at 5°F outside? Filter all 2,613 rated outdoor products in the EPA ENERGY STAR list by size class and cold-weather ratings, certified as of October 27, 2026.
Matches: 137 rated 3-ton split systems
Median of these: 86% kept at 5°F, COP 2.00, HSPF2 9.5.
| Product, 47°F to 5°F | Kept at 5°F | Output at 5°F, Btu/h | COP at 5°F | HSPF2 | SEER2 | Matches |
|---|---|---|---|---|---|---|
| Rheem RP18AZ36AJVClisted under 2 names | 121% | 43,500 | 2.20 | 8.5 | 20 | 12 |
| Russell SP18AZ36AJVClisted under 2 names | 121% | 43,500 | 2.20 | 8.5 | 19 | 12 |
| Friedrich FRP18AZ36AJVC | 119% | 43,000 | 2.20 | 8.5 | 20 | 3 |
| Fujitsu FOP1836MJAZCA | 119% | 43,000 | 2.20 | 8.5 | 19 | 1 |
| Samsung AC036FCUPCG | 108% | 39,000 | 2.41 | 8.5 | 17.5 | 8 |
| Johnson Controls XH936E2C11listed under 7 names | 106% | 33,600 | 2.00 | 9.5 | 19 | 247 |
| 1HVAC EZ-36-HPBlisted under 8 names | 105% | 39,000 | 1.90 | 10.3 | 17.4 | 3 |
| ComfortStar CPH3H-36CD(O)listed under 2 names | 105% | 39,000 | 1.90 | 10.3 | 18 | 3 |
| Direct Air DIRM4-36MAGICPRO20-OUlisted under 21 names | 105% | 39,000 | 1.90 | 10.3 | 17.4 | 47 |
| Midea MO1SE-H36B-2Alisted under 34 names | 105% | 39,000 | 1.90 | 10.3 | 18 | 120 |
| Lennox SL22KLV-036-230A | 105% | 34,000 | 2.42 | 10.5 | 20.5 | 80 |
| Cooper&Hunter CH-PQ36X-230VOlisted under 2 names | 101% | 37,400 | 1.90 | 10 | 18 | 7 |
| Midea MDV-V36WMN10T | 101% | 36,000 | 2.00 | 10.1 | 20 | 11 |
| 1HVAC ACIQ-36-HP32listed under 5 names | 100% | 34,000 | 2.00 | 10 | 18 | 1 |
| 1HVAC ACIQ-36-HPBlisted under 11 names | 100% | 36,000 | 2.00 | 10 | 17.6 | 6 |
| AC PRO AOE31U-36HFN1-M | 100% | 36,000 | 1.90 | 9.9 | 17 | 1 |
| AUX AHU36HPV1BOlisted under 2 names | 100% | 38,000 | 1.90 | 10 | 18.2 | 1 |
| Boreal ENX36HPJ132OAlisted under 6 names | 100% | 34,000 | 2.00 | 10 | 18.2 | 6 |
| Bosch BOHA-24MTB-M18S | 100% | 34,000 | 2.00 | 10 | 18.9 | 15 |
| Bosch BOHA-36MTB-M18Slisted under 2 names | 100% | 36,000 | 2.00 | 10.1 | 20 | 19 |
Ratings are each product's best certified match, as listed. Installed performance depends on the indoor unit and the installation. Source: EPA ENERGY STAR certified heat pump data, certified as of 2026-10-27. The finder filters ratings only; it does not size equipment.
How to use the finder
Pick the EPA category and a size class, then raise the slider to see only products that list more of their heat at 5°F. Every filter keeps the address of the page, so a result can be shared or bookmarked.
The small line next to each name runs from the listed 47°F capacity to the listed 5°F capacity of one match: rising means more heat at 5°F than at 47°F. Names with their own page open it; the others open side by side.
What the numbers mean
- Kept at 5°F
- Listed heating capacity at 5°F divided by listed capacity at 47°F, in the same match.
- COP at 5°F
- Heat delivered per unit of electricity at 5°F, as listed. It has no unit.
- HSPF2 and SEER2
- Seasonal heating and cooling ratings in Btu/Wh. Higher means more heat or cooling per watt-hour.
- Matches
- Certified pairings of the outdoor unit with indoor units or furnaces. Each figure here is the best match.
Every size class at 5°F
Share of 47°F capacity kept at 5°F: dot = median, ring = 90th percentile of the class. Of all rated products, 1,966 carry the EPA cold-climate designation.
Browse by size
Split systems
1- and 1.5-ton 2-ton 2.5-ton 3-ton 3.5-ton 4-ton 5-ton
Mini- and multi-splits
6,000 Btu/h 9,000 Btu/h 12,000 Btu/h 15,000 Btu/h 18,000 Btu/h 24,000 Btu/h 27,000 Btu/h 30,000 Btu/h 36,000 Btu/h 42,000 Btu/h 48,000 Btu/h 60,000 Btu/h
Other
Explainers
- Cold-climate heat pumps at 5°F
1,966 of 2,613 rated products carry the EPA cold-climate designation; 533 list at least as much heat at 5°F as at 47°F.
- SEER2, EER2 and HSPF2 explained
SEER2 and HSPF2 ranks agree only loosely: 0.64 among split systems and 0.50 among mini-splits.
- Variable-speed, two-stage and single-stage
Variable-speed split systems keep a median 83% of their 47°F capacity at 5°F; one- and two-stage units 52%–55%.
- R-454B, R-32 and R-410A
R-454B is now the most common refrigerant: 1,150 of 2,613 rated products.
- One outdoor unit, many ratings
For split systems the same outdoor unit's SEER2 typically varies by 1 across its certified matches, and by up to 13.1.
- Size classes: efficiency and 5°F output
The 6,000 Btu/h mini-split class has the highest median HSPF2 (14.6); among split systems the 2-ton class keeps the most heat at 5°F.
- Same ratings under different brand names
58% of rated products are listed under more than one brand name; one outdoor unit appears under 54.
Line-ups
Brand groups with their own page. Brands that list the same rated products are grouped. All 124 groups
AC PRO ACIQ AirEase / Armstrong Air Airquest / Arcoaire / Comfortmaker / Day & Night / Heil / Keeprite / Tempstar Amana AUX BlueRidge Carrier / Bryant Champion / Fraser-Johnston Coleman / Luxaire Fujitsu Guardian Innovair Johnson Controls LG Maratherm MDV Midea Mitsubishi Electric MRCOOL Payne / WeatherMaker Stealth TOSOT Trane / American Standard Trane / Mitsubishi Electric Westinghouse York