Data / ENERGY STAR / Mini-split heat pumps / Westinghouse
Westinghouse ENERGY STAR certified mini-split heat pumps: 16 models
Westinghouse has 16 ENERGY STAR certified products in mini-split heat pumps on the EPA's list as read on November 4, 2026, which puts it number 146 of 226 brands by model count. Its newest certification is WHP42M5A21S, dated June 13, 2026.
SpecStream is the live web data engine for teams and agents. It reads the EPA's ENERGY STAR certified product lists, keyed on the ENERGY STAR Unique ID, and this page is that reading. Ask for the products you track by category, brand or rating, and each new certification arrives in your sheet, CRM, Slack or agent as the EPA publishes it.
- 16Certified products
- June 13, 2026Newest certification
- 226Brands in this category
Westinghouse certified mini-split heat pumps
Newest first. Each row links to the product's record in the EPA's open data portal.
| Model | SEER2 (Btu/Wh) | EER2 (Btu/Wh) | HSPF2 (Btu/Wh) | Indoor Unit Model Number | ENERGY STAR ID | Certified | Source |
|---|---|---|---|---|---|---|---|
| WHP42M5A21S | 20 | 10.5 | 8.95 | 4652583 | June 13, 2026 | data.energystar.gov | |
| WHP42M5A21S | 18 | 10 | 8.8 | 4652579 | June 13, 2026 | data.energystar.gov | |
| WHP36M4A21S | 19.5 | 12 | 8.9 | 2415704 | June 13, 2026 | data.energystar.gov | |
| WHP24M3A21S | 21 | 12.1 | 8.6 | 2415701 | June 13, 2026 | data.energystar.gov | |
| WHP18M2A21S | 19 | 11.5 | 9.4 | 2415699 | June 13, 2026 | data.energystar.gov | |
| WHP24M3A21S | 22 | 12.5 | 9.05 | 2415698 | June 13, 2026 | data.energystar.gov | |
| WHP18M2A21S | 21 | 12.5 | 9.5 | 2415697 | June 13, 2026 | data.energystar.gov | |
| WHP36M4A21S | 21 | 12.5 | 9 | 2415696 | June 13, 2026 | data.energystar.gov | |
| WHP09SZA21S | 22 | 13.7 | 9 | WHP09WMA21S | 2635334 | June 9, 2026 | data.energystar.gov |
| WHP18SZA21S | 22.5 | 13 | 8.6 | WHP18WMA21S | 2635333 | June 9, 2026 | data.energystar.gov |
| WHP24SZA21S | 20.5 | 12.2 | 8.6 | WHP24WMA21S | 2635332 | June 9, 2026 | data.energystar.gov |
| WHZ12SZA21S | 23.5 | 15.4 | 9.8 | WHZ12WMA21S | 2635330 | June 9, 2026 | data.energystar.gov |
| WHZ09SZA21S | 27.5 | 15.5 | 10.5 | WHZ09WMA21S | 2635331 | June 1, 2026 | data.energystar.gov |
| WHS18SZB21S | 20 | 11.95 | 9.8 | WHS18WMB21S | 4009112 | February 11, 2026 | data.energystar.gov |
| WHS09SZB21S | 22.5 | 12.5 | 9 | WHS09WMB21S | 4009110 | February 11, 2026 | data.energystar.gov |
| WHS30SZB21S | 19 | 11.95 | 8 | WHS30WMB21S | 4002318 | February 11, 2026 | data.energystar.gov |
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Updated November 4, 2026. Read from ENERGY STAR certified product data, US Environmental Protection Agency (data.energystar.gov). Public domain data from the US EPA and the US Department of Energy. Products are listed as the EPA publishes them on the date this page was read, and the EPA can revise or withdraw a certification. A product is counted once, under the most specific list that holds it. For heat pumps each ENERGY STAR ID is one outdoor and indoor unit combination, so a model number can repeat. Brand names are as published. This page uses EPA data and is not endorsed or certified by the EPA or ENERGY STAR. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.