Carrier GW120W**D/G***1**2vsWATERLESS WG1A-48D1-CP*-*-*
Side-by-side geothermal heat pump comparison
Carrier GW120W**D/G***1**2
EER
17.8–21.1BTU/Wh
COP
3.10–3.70
Refrigerant
R-410A
Rated Across
2loop types
WATERLESS WG1A-48D1-CP*-*-*
EER
21BTU/Wh
COP
4.10
Refrigerant
Other
Key differences
Both models are closely matched on eer: 21.1 vs 21.0 BTU/Wh. The Carrier GW120W**D/G***1**2 is larger at 21.1 BTU/Wh versus 21 BTU/Wh.
Efficiency
| Spec | Carrier | WATERLESS |
|---|---|---|
| EER (best configuration)(BTU/Wh) | 21.1 | 21 |
| EER (worst configuration)(BTU/Wh) | 17.8 | 21 |
| COP (best configuration) | 3.70 | 4.10 |
| COP (worst configuration) | 3.10 | 4.10 |
Configuration
| Spec | Carrier | WATERLESS |
|---|---|---|
| Loop Types Rated | 2 | 1 |
| Total Configurations Rated | 2 | 1 |
| Model Name | GW | WG1A-48 |
| Refrigerant | R-410A | Other |