Century MJN024AvsGeoStar 103J049**1
Side-by-side geothermal heat pump comparison
Century MJN024A
EER
20.9–27.7BTU/Wh
COP
4.10–4.90
Refrigerant
Other
Rated Across
2loop types
GeoStar 103J049**1
EER
21.9–27.6BTU/Wh
COP
4.20–4.80
Refrigerant
R-410A
Rated Across
2loop types
Key differences
Both models are closely matched on eer: 27.7 vs 27.6 BTU/Wh. The Century MJN024A is larger at 27.7 BTU/Wh versus 27.6 BTU/Wh.
Efficiency
| Spec | Century | GeoStar |
|---|---|---|
| EER (best configuration)(BTU/Wh) | 27.7 | 27.6 |
| EER (worst configuration)(BTU/Wh) | 20.9 | 21.9 |
| COP (best configuration) | 4.90 | 4.80 |
| COP (worst configuration) | 4.10 | 4.20 |
Configuration
| Spec | Century | GeoStar |
|---|---|---|
| Loop Types Rated | 2 | 2 |
| Total Configurations Rated | 4 | 2 |
| Model Name | TRANQUILITY 27 DIGITAL SPLIT | ASTON |
| Refrigerant | Other | R-410A |