Comfort-Aire HSA1424S1-**AvsViessmann D5CURAH24AAK+KSAIC0701230
Side-by-side heat pump comparison
Comfort-Aire HSA1424S1-**A
SEER2
15.2–16BTU/Wh
HSPF2
7.8–8.2BTU/Wh
Cooling Capacity
22800–24000BTU/hr
Refrigerant
R-454B
GWP 470 · Lower
Viessmann D5CURAH24AAK+KSAIC0701230
SEER2
16BTU/Wh
HSPF2
9BTU/Wh
Cooling Capacity
23800BTU/hr
Cold Climate
Yes
Cold climate certified
Key differences
The Comfort-Aire HSA1424S1-**A is larger at 24000 BTU/hr versus 23800 BTU/hr.
Efficiency
| Spec | Comfort-Aire | Viessmann |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 16 | 16 |
| SEER2 (worst combination)(BTU/Wh) | 15.2 | 16 |
| HSPF2 (best combination)(BTU/Wh) | 8.2 | 9 |
| HSPF2 (worst combination)(BTU/Wh) | 7.8 | 9 |
| EER2 (best combination)(BTU/Wh) | 13.8 | 10 |
| COP at 5 °F | 2.18 | 1.98 |
Capacity
| Spec | Comfort-Aire | Viessmann |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 24000 | 23800 |
| Cooling Capacity (min)(BTU/hr) | 22800 | 23800 |
| Heating at 47 °F(BTU/hr) | 23000 | 25400 |
| Heating at 17 °F(BTU/hr) | 14700 | 19400 |
| Heating at 5 °F(BTU/hr) | 11600 | 19800 |
Configuration
| Spec | Comfort-Aire | Viessmann |
|---|---|---|
| Product Type | HP - Split System | HP - Split System |
| Compressor Staging | Single stage | Continuously variable |
| Cold Climate Certified | No | Yes |
| Connected Capability | No | No |
| Series | HSA14 SERIES | Crossover Heat Pump |
| Indoor-Unit Combinations Rated | 49 | 1 |
Refrigerant
| Spec | Comfort-Aire | Viessmann |
|---|---|---|
| Type | R-454B | R-454B |
| GWP Rating | R-454B (GWP:470 | Lower GWP) | R-454B (GWP:470 | Lower GWP) |