Heat pumps by size
Every certified heat pump in 12 size classes, with the heat each class is certified to deliver at 5°F. Pick the size on your quote.
The size classes
| Btunominal size · cooling | Tons | Units | Median heat at 47°FBtu/hkW · heating | Median heat at 5°FBtu/hkW · full speed | Median cold output% of 47°F rating | Also listed by type |
|---|---|---|---|---|---|---|
| 6,000 | 0.5 | 231 | 8,2002.40 | 6,4001.88 | 78% | Central · Cold climate · Mini-split |
| 9,000 | 0.75 | 952 | 10,0002.93 | 7,6002.23 | 77% | Central · Cold climate |
| 12,000 | 1 | 937 | 12,0003.52 | 9,1002.67 | 75% | Central · Cold climate |
| 15,000 | 1.25 | 250 | 16,0004.69 | 14,0004.10 | 92% | Cold climate |
| 18,000 | 1.5 | 1,417 | 18,0005.28 | 14,0004.10 | 76% | Central · Cold climate |
| 24,000 | 2 | 1,617 | 24,0007.03 | 19,0005.57 | 78% | Central · Cold climate · Mini-split |
| 30,000 | 2.5 | 849 | 30,0008.79 | 24,0007.03 | 77% | Central · Cold climate · Mini-split |
| 36,000 | 3 | 1,152 | 36,00010.55 | 28,4008.32 | 77% | Central · Cold climate · Mini-split |
| 42,000 | 3.5 | 496 | 44,00012.90 | 35,20010.32 | 78% | Central · Cold climate · Mini-split |
| 48,000 | 4 | 948 | 48,00014.07 | 38,00011.14 | 78% | Central · Cold climate · Mini-split |
| 54,000 | 4.5 | 590 | 55,50016.27 | 42,00012.31 | 75% | Cold climate · Mini-split |
| 60,000 | 5 | 69 | 64,50018.90 | 46,50013.63 | 71% | Central · Cold climate · Mini-split |
By refrigerant: R-454B (3,616 units) · R-410A (2,868 units) · R-32 (1,936 units)
How sizes are named
Size classes are the sizes the market sells, 6,000 to 60,000 Btu. A unit is listed under the size most of its certified pairings fall in, and also under any other size it reaches.
A size class is the nominal cooling capacity, which is how equipment is sold. It does not say how much heat a unit delivers in the cold. A heat-loss calculation decides the size for a house.