WeatherKing WP15AY48AJ2NvsZERO Z6SOV-48HDMB-US
Side-by-side heat pump comparison
WeatherKing WP15AY48AJ2N
SEER2
15.2BTU/Wh
HSPF2
7.8BTU/Wh
Cooling Capacity
45500BTU/hr
Refrigerant
R-454B
GWP 470 · Lower
ZERO Z6SOV-48HDMB-US
SEER2
20.4–21.3BTU/Wh
HSPF2
10–10.6BTU/Wh
Cooling Capacity
45000BTU/hr
Cold Climate
Yes
Cold climate certified
Key differences
ZERO Z6SOV-48HDMB-US is 29% more efficient at 21.3 BTU/Wh versus 15.2 BTU/Wh for the WeatherKing WP15AY48AJ2N. The WeatherKing WP15AY48AJ2N is larger at 45500 BTU/hr versus 45000 BTU/hr. Overall, the ZERO Z6SOV-48HDMB-US sits higher in the category, ranking above 81% of certified air-source heat pumps.
Efficiency
| Spec | WeatherKing | ZERO |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 15.2 | 21.3 |
| SEER2 (worst combination)(BTU/Wh) | 15.2 | 20.4 |
| HSPF2 (best combination)(BTU/Wh) | 7.8 | 10.6 |
| HSPF2 (worst combination)(BTU/Wh) | 7.8 | 10 |
| EER2 (best combination)(BTU/Wh) | 11.7 | 12 |
| COP at 5 °F | — | 2.10 |
Capacity
| Spec | WeatherKing | ZERO |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 45500 | 45000 |
| Cooling Capacity (min)(BTU/hr) | 45500 | 45000 |
| Heating at 47 °F(BTU/hr) | 45500 | 48000 |
| Heating at 17 °F(BTU/hr) | 30000 | 39000 |
| Heating at 5 °F(BTU/hr) | — | 38000 |
Configuration
| Spec | WeatherKing | ZERO |
|---|---|---|
| Product Type | HP - Split System | HP - Mini or Multi Split |
| Compressor Staging | Two-stage | Continuously variable |
| Cold Climate Certified | No | Yes |
| Connected Capability | No | No |
| Series | VERSUS | Z6SOV Series |
| Indoor-Unit Combinations Rated | 1 | 3 |
Refrigerant
| Spec | WeatherKing | ZERO |
|---|---|---|
| Type | R-454B | R-454B |
| GWP Rating | R-454B (GWP:470 | Lower GWP) | R-454B (GWP:470 | Lower GWP) |