Carrier 25SCA536A**30*vsZERO ZSOVA-36HDMB-USHH
Side-by-side heat pump comparison
Carrier 25SCA536A**30*
SEER2
15.2BTU/Wh
HSPF2
7.8BTU/Wh
Cooling Capacity
34800–36200BTU/hr
Refrigerant
R-410A
GWP 2088 · Higher
ZERO ZSOVA-36HDMB-USHH
SEER2
17.4BTU/Wh
HSPF2
10.3BTU/Wh
Cooling Capacity
36000BTU/hr
Cold Climate
Yes
Cold climate certified
Key differences
ZERO ZSOVA-36HDMB-USHH is 13% more efficient at 17.4 BTU/Wh versus 15.2 BTU/Wh for the Carrier 25SCA536A**30*. The Carrier 25SCA536A**30* is larger at 36200 BTU/hr versus 36000 BTU/hr. ZERO ZSOVA-36HDMB-USHH uses a lower-impact refrigerant: R-454B (GWP 470) versus R-410A (GWP 2088). Overall, the ZERO ZSOVA-36HDMB-USHH sits higher in the category, ranking above 70% of certified air-source heat pumps.
Efficiency
| Spec | Carrier | ZERO |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 15.2 | 17.4 |
| SEER2 (worst combination)(BTU/Wh) | 15.2 | 17.4 |
| HSPF2 (best combination)(BTU/Wh) | 7.8 | 10.3 |
| HSPF2 (worst combination)(BTU/Wh) | 7.8 | 10.3 |
| EER2 (best combination)(BTU/Wh) | 12.5 | 11.7 |
| COP at 5 °F | 2.10 | 1.90 |
Capacity
| Spec | Carrier | ZERO |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 36200 | 36000 |
| Cooling Capacity (min)(BTU/hr) | 34800 | 36000 |
| Heating at 47 °F(BTU/hr) | 35400 | 37000 |
| Heating at 17 °F(BTU/hr) | 21200 | 31800 |
| Heating at 5 °F(BTU/hr) | 16600 | 39000 |
Configuration
| Spec | Carrier | ZERO |
|---|---|---|
| Product Type | HP - Split System | HP - Split System |
| Compressor Staging | Single stage | Continuously variable |
| Cold Climate Certified | No | Yes |
| Connected Capability | No | No |
| Series | COMFORT 15 SEER2 HP | ZAVA Series |
| Indoor-Unit Combinations Rated | 5 | 1 |
Refrigerant
| Spec | Carrier | ZERO |
|---|---|---|
| Type | R-410A | R-454B |
| GWP Rating | R-410A (GWP:2088) | R-454B (GWP:470 | Lower GWP) |