WHU24SZA21S
Westinghouse · HP - Mini or Multi Split
18.5BTU/Wh
10BTU/Wh
24000BTU/hr
Yes
Westinghouse WHU24SZA21S: SEER2 18.5 BTU/Wh, around the middle of the range for air-source heat pumps (category median 20 BTU/Wh).
Where this model sits
The Westinghouse WHU24SZA21S is a 24000 BTU/hr hp - mini or multi split using R-410A, a refrigerant with high global warming potential (GWP 2088). At 18.5 BTU/Wh it ranks around the middle of the 12,218 certified air-source heat pumps models. Among similar-sized air-source heat pumps (within 10% of its size), it is less efficient than the peer median of 19.2 BTU/Wh. In this size range, comparable Midea models average 18.6 BTU/Wh and TOSOT models average 21 BTU/Wh.
Specifications
| Efficiency | |
|---|---|
| SEER2 (best combination) | 18.5BTU/Wh |
| SEER2 (worst combination) | 18.5BTU/Wh |
| HSPF2 (best combination) | 10BTU/Wh |
| HSPF2 (worst combination) | 10BTU/Wh |
| EER2 (best combination) | 12.5BTU/Wh |
| COP at 5 °F | 2.20 |
| Capacity | |
| Cooling Capacity (max) | 24000BTU/hr |
| Cooling Capacity (min) | 24000BTU/hr |
| Heating at 47 °F | 24000BTU/hr |
| Heating at 17 °F | 19000BTU/hr |
| Heating at 5 °F | 19000BTU/hr |
All 25 specifications
| Configuration | |
|---|---|
| Product Type | HP - Mini or Multi Split |
| Compressor Staging | Continuously variable |
| Cold Climate Certified | Yes |
| Connected Capability | No |
| Series | Hi UNI |
| Indoor-Unit Combinations Rated | 1 |
| Refrigerant | |
| Type | R-410A |
| GWP Rating | R-410A (GWP:2088) |
| Identifiers | |
| Model Number | WHU24SZA21S |
| ENERGY STAR ID | ES_28426_WHU24SZA21S_03032023014136_3666835 |
| Partner | Fujitsu General America, Inc. |
| Date Certified | 2026-06-09 |
| Available From | 2023-03-03 |
| Markets | United States, Canada |
Documentation
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