100-WA-AP1T077056
Viessmann · Geothermal Heat Pump
ENERGY STAR CertifiedGeothermal Heat Pumps →
EER
19–23.7BTU/Wh
COP
3.90–4.60
Refrigerant
Other
Rated Across
2loop types
ENERGY STAR Most Efficient
Viessmann 100-WA-AP1T077056: EER 23.7 BTU/Wh, around the middle of the range for geothermal heat pumps (category median 24.1 BTU/Wh).
Where this model sits
EER23.7BTU/Wh
16.1median 24.147.6
COP4.60
3.10median 4.405.60
The Viessmann 100-WA-AP1T077056 is a 23.7 BTU/Wh geothermal heat pump using Other. At 23.7 BTU/Wh it ranks around the middle of the 2,204 certified geothermal heat pumps models.
Specifications
| Efficiency | |
|---|---|
| EER (best configuration) | 23.7BTU/Wh |
| EER (worst configuration) | 19BTU/Wh |
| COP (best configuration) | 4.60 |
| COP (worst configuration) | 3.90 |
| Configuration | |
| Loop Types Rated | 2 |
| Total Configurations Rated | 2 |
| Model Name | Vitocal 100-WA |
| Refrigerant | Other |
All 14 specifications
| Identifiers | |
|---|---|
| Model Number | 100-WA-AP1T077056 |
| ENERGY STAR ID | ES_42211_100-WA-AP1T077056_04202026153004_01218002308 |
| Partner | Viessmann Manufacturing Company |
| Date Qualified | 2026-05-11 |
| Available From | 2025-12-01 |
| Markets | United States, Canada |
Documentation
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