AFMKH42-H2
AIR MAX · HP - Mini or Multi Split
18–21BTU/Wh
8.1–10BTU/Wh
42000BTU/hr
Yes
AIR MAX AFMKH42-H2: SEER2 21 BTU/Wh, around the middle of the range for air-source heat pumps (category median 20 BTU/Wh).
SEER2: better than 77% of the 574 comparable models within 10% of this capacity. Their median is 16 BTU/Wh.
Where this model sits
The AIR MAX AFMKH42-H2 is a 42000 BTU/hr hp - mini or multi split using R-32, a refrigerant with moderate global warming potential (GWP 675). At 21 BTU/Wh it ranks around the middle of the 12,218 certified air-source heat pumps models. Among similar-sized air-source heat pumps (within 10% of its size), it is more efficient than the peer median of 16 BTU/Wh.
Specifications
| Efficiency | |
|---|---|
| SEER2 (best combination) | 21BTU/Wh |
| SEER2 (worst combination) | 18BTU/Wh |
| HSPF2 (best combination) | 10BTU/Wh |
| HSPF2 (worst combination) | 8.1BTU/Wh |
| EER2 (best combination) | 13BTU/Wh |
| COP at 5 °F | 2.10 |
| Capacity | |
| Cooling Capacity (max) | 42000BTU/hr |
| Cooling Capacity (min) | 42000BTU/hr |
| Heating at 47 °F | 42000BTU/hr |
| Heating at 17 °F | 44500BTU/hr |
| Heating at 5 °F | 37800BTU/hr |
All 25 specifications
| Configuration | |
|---|---|
| Product Type | HP - Mini or Multi Split |
| Compressor Staging | Continuously variable |
| Cold Climate Certified | Yes |
| Connected Capability | No |
| Series | AIRMAX Free Match |
| Indoor-Unit Combinations Rated | 3 |
| Refrigerant | |
| Type | R-32 |
| GWP Rating | R-32 (GWP:675 | Lower GWP) |
| Identifiers | |
| Model Number | AFMKH42-H2 |
| ENERGY STAR ID | ES_1150757_AFMKH42-H2_04202026000000_29218396968 |
| Partner | CONFORMATIC CORP. |
| Date Certified | 2026-05-06 |
| Available From | 2026-04-20 |
| Markets | United States, Canada |
Documentation
We link to manufacturer documentation at its original source rather than rehosting it, so you always get the current revision.