W5WZ048BS1*
WaterFurnace · Geothermal Heat Pump
ENERGY STAR CertifiedGeothermal Heat Pumps →
EER
16.1–20.9BTU/Wh
COP
3.10–3.60
Refrigerant
Other
Rated Across
2loop types
Low EERENERGY STAR Most Efficient
WaterFurnace W5WZ048BS1*: EER 20.9 BTU/Wh, lower than 85% of geothermal heat pumps (category median 24.1 BTU/Wh).
Where this model sits
EER20.9BTU/Wh
16.1median 24.147.6
Lower than 85% of geothermal heat pumps.
COP3.60
3.10median 4.405.60
The WaterFurnace W5WZ048BS1* is a 20.9 BTU/Wh geothermal heat pump using Other. At 20.9 BTU/Wh it ranks in the bottom 15% of the 2,204 certified geothermal heat pumps models.
Specifications
| Efficiency | |
|---|---|
| EER (best configuration) | 20.9BTU/Wh |
| EER (worst configuration) | 16.1BTU/Wh |
| COP (best configuration) | 3.60 |
| COP (worst configuration) | 3.10 |
| Configuration | |
| Loop Types Rated | 2 |
| Total Configurations Rated | 2 |
| Model Name | 5 Series |
| Refrigerant | Other |
All 14 specifications
| Identifiers | |
|---|---|
| Model Number | W5WZ048BS1* |
| ENERGY STAR ID | ES_1036337_W5WZ048BS1*_01032025163743_02216719393 |
| Partner | WaterFurnace International, Incorporated |
| Date Qualified | 2025-07-23 |
| Available From | 2025-01-13 |
| Markets | United States, Canada |
Documentation
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