MWM120A
Century · Geothermal Heat Pump
ENERGY STAR CertifiedGeothermal Heat Pumps →
EER
19.2–23.9BTU/Wh
COP
3.30–4.10
Refrigerant
Other
Rated Across
2loop types
ENERGY STAR Most Efficient
Century MWM120A: EER 23.9 BTU/Wh, around the middle of the range for geothermal heat pumps (category median 24.1 BTU/Wh).
Where this model sits
EER23.9BTU/Wh
16.1median 24.147.6
COP4.10
3.10median 4.405.60
The Century MWM120A is a 23.9 BTU/Wh geothermal heat pump using Other. At 23.9 BTU/Wh it ranks around the middle of the 2,204 certified geothermal heat pumps models.
Specifications
| Efficiency | |
|---|---|
| EER (best configuration) | 23.9BTU/Wh |
| EER (worst configuration) | 19.2BTU/Wh |
| COP (best configuration) | 4.10 |
| COP (worst configuration) | 3.30 |
| Configuration | |
| Loop Types Rated | 2 |
| Total Configurations Rated | 2 |
| Model Name | Tranquility Water to Water Series |
| Refrigerant | Other |
All 14 specifications
| Identifiers | |
|---|---|
| Model Number | MWM120A |
| ENERGY STAR ID | ES_22828_MWM120A_10162025173906_02217897475 |
| Partner | ClimateMaster Inc. |
| Date Qualified | 2025-10-20 |
| Available From | 2025-04-09 |
| Markets | United States, Canada |
Documentation
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