AIR MAX AFMKH18-H2vsAirquest N4H5S18*K*AAA*
Side-by-side heat pump comparison
AIR MAX AFMKH18-H2
SEER2
18–21BTU/Wh
HSPF2
8.1–10BTU/Wh
Cooling Capacity
18000BTU/hr
Cold Climate
Yes
Cold climate certified
Airquest N4H5S18*K*AAA*
SEER2
15.2BTU/Wh
HSPF2
7.8BTU/Wh
Cooling Capacity
18000–18100BTU/hr
Refrigerant
R-410A
GWP 2088 · Higher
Key differences
AIR MAX AFMKH18-H2 is 28% more efficient at 21.0 BTU/Wh versus 15.2 BTU/Wh for the Airquest N4H5S18*K*AAA*. The Airquest N4H5S18*K*AAA* is larger at 18100 BTU/hr versus 18000 BTU/hr. AIR MAX AFMKH18-H2 uses a lower-impact refrigerant: R-32 (GWP 675) versus R-410A (GWP 2088). Overall, the AIR MAX AFMKH18-H2 sits higher in the category, ranking above 25% of certified air-source heat pumps.
Efficiency
| Spec | AIR MAX | Airquest |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 21 | 15.2 |
| SEER2 (worst combination)(BTU/Wh) | 18 | 15.2 |
| HSPF2 (best combination)(BTU/Wh) | 10 | 7.8 |
| HSPF2 (worst combination)(BTU/Wh) | 8.1 | 7.8 |
| EER2 (best combination)(BTU/Wh) | 12 | 12 |
| COP at 5 °F | 2 | — |
Capacity
| Spec | AIR MAX | Airquest |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 18000 | 18100 |
| Cooling Capacity (min)(BTU/hr) | 18000 | 18000 |
| Heating at 47 °F(BTU/hr) | 18000 | 16700 |
| Heating at 17 °F(BTU/hr) | 17600 | 10400 |
| Heating at 5 °F(BTU/hr) | 13800 | — |
Configuration
| Spec | AIR MAX | Airquest |
|---|---|---|
| Product Type | HP - Mini or Multi Split | HP - Split System |
| Compressor Staging | Continuously variable | Single stage |
| Cold Climate Certified | Yes | No |
| Connected Capability | No | No |
| Series | AIRMAX Free Match | PERFORMANCE 15 SEER2 HP |
| Indoor-Unit Combinations Rated | 3 | 2 |
Refrigerant
| Spec | AIR MAX | Airquest |
|---|---|---|
| Type | R-32 | R-410A |
| GWP Rating | R-32 (GWP:675 | Lower GWP) | R-410A (GWP:2088) |