Willis heat pumps
36 heat pumps listed under Willis.
| Model | SEER2 | Costs to run |
|---|---|---|
| AUHW09KR32-O | 30.00 (22.30–30.00 across 6 configurations) | $16.38 per million BTU of heat |
| AUHW12KR32-O | 29.50 (20.00–29.50 across 6 configurations) | $18.34 per million BTU of heat |
| AUHW18KR32-O | 27.50 | $18.34 per million BTU of heat |
| AUHW24KR32-O | 27.00 | $18.34 per million BTU of heat |
| PUHW24KR32-O | 26.00 | $18.34 per million BTU of heat |
| PUHW09KR32-O | 26.00 (22.00–26.00 across 6 configurations) | $17.63 per million BTU of heat |
| PUHW18KR32-O | 24.50 | $20.38 per million BTU of heat |
| PUHW12KR32-O | 24.50 (21.00–24.50 across 6 configurations) | $19.31 per million BTU of heat |
| PUHW12KCH24S2-O | 24.00 | $20.38 per million BTU of heat |
| PUHW18KCH23S2-O | 23.00 | $21.58 per million BTU of heat |
| CHW30KR32-O | 22.00 | $20.38 per million BTU of heat |
| PUHW36KR32-O | 21.00 | $21.58 per million BTU of heat |
| MZUHW42KR32-O | 21.00 (18.00–21.00 across 3 configurations) | $18.34 per million BTU of heat |
| MZUHW42KCH21S2-O | 21.00 | $18.34 per million BTU of heat |
| MZUHW36KR32-O | 21.00 (18.00–21.00 across 3 configurations) | $18.34 per million BTU of heat |
| MZUHW36KCH21S2-O | 21.00 | $18.34 per million BTU of heat |
| MZUHW30KR32-O | 21.00 (18.00–21.00 across 3 configurations) | $18.34 per million BTU of heat |
| MZUHW30KCH21S2-O | 21.00 | $18.34 per million BTU of heat |
| MZUHW24KR32-O | 21.00 (18.00–21.00 across 3 configurations) | $18.34 per million BTU of heat |
| MZUHW24KCH21S2-O | 21.00 | $18.34 per million BTU of heat |
| MZUHW18KR32-O | 21.00 (18.00–21.00 across 3 configurations) | $18.34 per million BTU of heat |
| MZUHW18KCH21S2-O | 21.00 | $18.34 per million BTU of heat |
| CHW36KR32-O | 21.00 | $21.58 per million BTU of heat |
| CHW09KAR32-O | 20.50 | $20.84 per million BTU of heat |
| CHW18KR32-O | 20.00 | $21.58 per million BTU of heat |
| HW-COND36K | 19.50 | $17.47 per million BTU of heat |
| FLEX60KUHR32 | 19.00 (16.00–19.00 across 4 configurations) | $17.47 per million BTU of heat |
| FLEX48KUHR32 | 19.00 | $18.34 per million BTU of heat |
| CHW24KR32-O | 19.00 | $21.58 per million BTU of heat |
| CHW12KR32-O | 19.00 | $21.58 per million BTU of heat |
| FLEX36KUHR32 | 18.20 (16.00–18.20 across 4 configurations) | $18.34 per million BTU of heat |
| FLEX24KUHR32 | 18.00 | $18.34 per million BTU of heat |
| CHW12KCH18S2-O | 17.50 | $21.58 per million BTU of heat |
| PRT60KUH | 17.00 | $22.10 per million BTU of heat |
| FLEX48/60KUH | 16.00 | $20.38 per million BTU of heat |
| FLEX24/36KUH | 16.00 | $20.38 per million BTU of heat |
Computed from electricity at 18.34¢/kWh, the EIA average for US in June 2026. A kilowatt-hour is 3412 BTU. This is a rate times a rating, not a prediction of your bill.
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Source: ENERGY STAR certified product data, published by the U.S. EPA and used with attribution. This is a register of certified models, not of every model on the market. ENERGY STAR is a registered mark of the U.S. EPA; this site is not affiliated with or endorsed by EPA or DOE.