MJN024A
Century · Geothermal Heat Pump
ENERGY STAR CertifiedGeothermal Heat Pumps →
EER
20.9–27.7BTU/Wh
COP
4.10–4.90
Refrigerant
Other
Rated Across
2loop types
High EERENERGY STAR Most Efficient
Century MJN024A: EER 27.7 BTU/Wh, better than 86% of geothermal heat pumps (category median 24.1 BTU/Wh).
Where this model sits
EER27.7BTU/Wh
16.1median 24.147.6
Better than 86% of geothermal heat pumps.
COP4.90
3.10median 4.405.60
The Century MJN024A is a 27.7 BTU/Wh geothermal heat pump using Other. At 27.7 BTU/Wh it ranks better than 86% of the 2,204 certified geothermal heat pumps models.
Specifications
| Efficiency | |
|---|---|
| EER (best configuration) | 27.7BTU/Wh |
| EER (worst configuration) | 20.9BTU/Wh |
| COP (best configuration) | 4.90 |
| COP (worst configuration) | 4.10 |
| Configuration | |
| Loop Types Rated | 2 |
| Total Configurations Rated | 4 |
| Model Name | TRANQUILITY 27 DIGITAL SPLIT |
| Refrigerant | Other |
All 14 specifications
| Identifiers | |
|---|---|
| Model Number | MJN024A |
| ENERGY STAR ID | ES_22828_MJN024A_10162025173816_02217897463 |
| Partner | ClimateMaster Inc. |
| Date Qualified | 2025-10-20 |
| Available From | 2025-01-13 |
| Markets | United States, Canada |
Documentation
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