ComfiAire CA4-36UMTOvsViessmann D5CUHAH30AAK+TIC2025-0016
Side-by-side heat pump comparison
ComfiAire CA4-36UMTO
SEER2
21BTU/Wh
HSPF2
9BTU/Wh
Cooling Capacity
32000BTU/hr
Cold Climate
Yes
Cold climate certified
Viessmann D5CUHAH30AAK+TIC2025-0016
SEER2
16.5BTU/Wh
HSPF2
9BTU/Wh
Cooling Capacity
31200BTU/hr
Cold Climate
Yes
Cold climate certified
Key differences
ComfiAire CA4-36UMTO is 21% more efficient at 21.0 BTU/Wh versus 16.5 BTU/Wh for the Viessmann D5CUHAH30AAK+TIC2025-0016. The ComfiAire CA4-36UMTO is larger at 32000 BTU/hr versus 31200 BTU/hr. Viessmann D5CUHAH30AAK+TIC2025-0016 uses a lower-impact refrigerant: R-454B (GWP 470) versus R-410A (GWP 2088).
Efficiency
| Spec | ComfiAire | Viessmann |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 21 | 16.5 |
| SEER2 (worst combination)(BTU/Wh) | 21 | 16.5 |
| HSPF2 (best combination)(BTU/Wh) | 9 | 9 |
| HSPF2 (worst combination)(BTU/Wh) | 9 | 9 |
| EER2 (best combination)(BTU/Wh) | 12.5 | 10.5 |
| COP at 5 °F | 1.84 | 1.92 |
Capacity
| Spec | ComfiAire | Viessmann |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 32000 | 31200 |
| Cooling Capacity (min)(BTU/hr) | 32000 | 31200 |
| Heating at 47 °F(BTU/hr) | 32000 | 37200 |
| Heating at 17 °F(BTU/hr) | 22400 | 21000 |
| Heating at 5 °F(BTU/hr) | 36000 | 32000 |
Configuration
| Spec | ComfiAire | Viessmann |
|---|---|---|
| Product Type | HP - Mini or Multi Split | HP - Split System |
| Compressor Staging | Continuously variable | Continuously variable |
| Cold Climate Certified | Yes | Yes |
| Connected Capability | No | No |
| Series | Multi Zone | Crossover Heat Pump |
| Indoor-Unit Combinations Rated | 1 | 2 |
Refrigerant
| Spec | ComfiAire | Viessmann |
|---|---|---|
| Type | R-410A | R-454B |
| GWP Rating | R-410A (GWP:2088) | R-454B (GWP:470 | Lower GWP) |