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Willis ENERGY STAR certified products: 72 models in 2 categories

Willis has 72 ENERGY STAR certified products across 2 categories on the EPA's list as read on November 4, 2026. Its newest certification is MZUHW36KR32-O in mini-split heat pumps, dated September 30, 2026, and its largest category is mini-split heat pumps with 58.

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.

Get every product Willis certifiedWatch new Willis certificationsCompare brands in mini-split heat pumps
Certified products
72
Categories
2
Newest certification
September 30, 2026
Largest category
Mini-split heat pumps, 58

Certified products by category

Counts and the latest certification date in each category. Categories with several models link to the brand's page for that category.

CategoryCertified productsLatest certification
Mini-split heat pumps58September 30, 2026
Ducted heat pumps14September 16, 2026

Newest Willis certifications

The 72 most recent certifications. Each row links to the product's record in the EPA's open data portal.

CategoryModelENERGY STAR IDCertifiedSource
Mini-split heat pumpsMZUHW36KR32-O3995662September 30, 2026data.energystar.gov
Mini-split heat pumpsMZUHW18KR32-O3995658September 30, 2026data.energystar.gov
Mini-split heat pumpsAUHW09KR32-O4470753September 22, 2026data.energystar.gov
Mini-split heat pumpsAUHW12KR32-O4470748September 22, 2026data.energystar.gov
Ducted heat pumpsFLEX60KUHR323942663September 16, 2026data.energystar.gov
Ducted heat pumpsFLEX60KUHR323942662September 16, 2026data.energystar.gov
Ducted heat pumpsFLEX48KUHR323942661September 16, 2026data.energystar.gov
Ducted heat pumpsFLEX36KUHR323942660September 16, 2026data.energystar.gov
Ducted heat pumpsFLEX36KUHR323942659September 16, 2026data.energystar.gov
Ducted heat pumpsFLEX24KUHR323942658September 16, 2026data.energystar.gov
Ducted heat pumpsFLEX48/60KUH3544274July 7, 2026data.energystar.gov
Ducted heat pumpsFLEX24/36KUH3436476June 29, 2026data.energystar.gov
Ducted heat pumpsPRT60KUH3436475June 29, 2026data.energystar.gov
Mini-split heat pumpsCHW12KCH18S2-O4652561June 25, 2026data.energystar.gov
Mini-split heat pumpsCHW24KR32-O4514314June 13, 2026data.energystar.gov
Mini-split heat pumpsAUHW09KR32-O4470754June 13, 2026data.energystar.gov
Mini-split heat pumpsAUHW09KR32-O3997962June 13, 2026data.energystar.gov
Mini-split heat pumpsMZUHW30KCH21S2-O3544193June 13, 2026data.energystar.gov
Mini-split heat pumpsMZUHW24KCH21S2-O3544192June 13, 2026data.energystar.gov
Mini-split heat pumpsMZUHW18KCH21S2-O3544191June 13, 2026data.energystar.gov
Mini-split heat pumpsMZUHW42KCH21S2-O3544190June 13, 2026data.energystar.gov
Mini-split heat pumpsMZUHW36KCH21S2-O3544189June 13, 2026data.energystar.gov
Mini-split heat pumpsPUHW12KCH24S2-O3475357June 13, 2026data.energystar.gov
Mini-split heat pumpsPUHW18KCH23S2-O3475355June 13, 2026data.energystar.gov
Ducted heat pumpsFLEX36KUHR324515682June 9, 2026data.energystar.gov
Ducted heat pumpsFLEX36KUHR324515681June 9, 2026data.energystar.gov
Ducted heat pumpsFLEX60KUHR324515680June 4, 2026data.energystar.gov
Ducted heat pumpsFLEX60KUHR324515679June 4, 2026data.energystar.gov
Mini-split heat pumpsAUHW12KR32-O4470752May 28, 2026data.energystar.gov
Mini-split heat pumpsAUHW12KR32-O4470751May 28, 2026data.energystar.gov
Mini-split heat pumpsAUHW12KR32-O4470750May 28, 2026data.energystar.gov
Mini-split heat pumpsAUHW12KR32-O4470749May 28, 2026data.energystar.gov
Mini-split heat pumpsAUHW12KR32-O3997966May 28, 2026data.energystar.gov
Ducted heat pumpsHW-COND36K4006852April 22, 2026data.energystar.gov
Mini-split heat pumpsCHW12KR32-O4515401March 17, 2026data.energystar.gov
Mini-split heat pumpsCHW09KAR32-O4514313March 17, 2026data.energystar.gov
Mini-split heat pumpsCHW36KR32-O4514312March 17, 2026data.energystar.gov
Mini-split heat pumpsCHW30KR32-O4514311March 17, 2026data.energystar.gov
Mini-split heat pumpsPUHW09KR32-O4470742March 17, 2026data.energystar.gov
Mini-split heat pumpsPUHW09KR32-O4470741March 17, 2026data.energystar.gov
Mini-split heat pumpsPUHW09KR32-O4470740March 17, 2026data.energystar.gov
Mini-split heat pumpsPUHW09KR32-O4470739March 17, 2026data.energystar.gov
Mini-split heat pumpsPUHW09KR32-O4470738March 17, 2026data.energystar.gov
Mini-split heat pumpsPUHW12KR32-O3997969March 17, 2026data.energystar.gov
Mini-split heat pumpsAUHW18KR32-O3997967March 17, 2026data.energystar.gov
Mini-split heat pumpsPUHW18KR32-O3997965March 17, 2026data.energystar.gov
Mini-split heat pumpsPUHW09KR32-O3997964March 17, 2026data.energystar.gov
Mini-split heat pumpsPUHW36KR32-O3997963March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW42KR32-O3995667March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW36KR32-O3995666March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW30KR32-O3995665March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW24KR32-O3995664March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW42KR32-O3995663March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW30KR32-O3995661March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW24KR32-O3995660March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW18KR32-O3995659March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW42KR32-O3995657March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW36KR32-O3995656March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW30KR32-O3995655March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW24KR32-O3995654March 17, 2026data.energystar.gov
Mini-split heat pumpsMZUHW18KR32-O3995653March 17, 2026data.energystar.gov
Mini-split heat pumpsCHW18KR32-O4515402January 14, 2026data.energystar.gov
Mini-split heat pumpsAUHW24KR32-O3997968November 20, 2025data.energystar.gov
Mini-split heat pumpsPUHW12KR32-O4470747November 7, 2025data.energystar.gov
Mini-split heat pumpsPUHW12KR32-O4470746November 7, 2025data.energystar.gov
Mini-split heat pumpsPUHW12KR32-O4470745November 7, 2025data.energystar.gov
Mini-split heat pumpsPUHW12KR32-O4470744November 7, 2025data.energystar.gov
Mini-split heat pumpsPUHW12KR32-O4470743November 7, 2025data.energystar.gov
Mini-split heat pumpsPUHW24KR32-O3997961November 7, 2025data.energystar.gov
Mini-split heat pumpsAUHW09KR32-O4470757July 9, 2025data.energystar.gov
Mini-split heat pumpsAUHW09KR32-O4470756July 9, 2025data.energystar.gov
Mini-split heat pumpsAUHW09KR32-O4470755July 9, 2025data.energystar.gov

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.