| A Commercial HVAC Solutions LLC | HVA | 2024 | Active |
| A R Bailey Mechanical Inc | HVA | 2004 | Active |
| Accurate Services Tech LLC | HVA | 2026 | Active |
| Ace Hardware Home Services Inc | HVA | 2025 | Active |
| Aegis Air Services Inc | HVA | 2015 | Active |
| Affordable HVAC LLC | HVA | 2018 | Active |
| Agz AC & Heating Sevices LLC | HVA | 2021 | Active |
| Air Blue Home Services LLC | HVA | 2025 | Active |
| Air Fly HVAC Pro LLC | HVA | 2023 | Active |
| Air Handler LLC | HVA | 2025 | Active |
| Aircon Services LLC | HVA | 2024 | Active |
| Airgold HVAC Services LLC | HVA | 2026 | Active |
| Airsys Inc | HVA | 2001 | Active |
| Alfa Group LLC | HVA | 2017 | Renew by Nov 30, 2026 |
| All Appliance Services Inc | HVA | 2011 | Active |
| All Trades Solutions LLC | HVA | 2016 | Active |
| American Cold Control Inc | HVA | 2019 | Active |
| Americlean Services Corporation | HVA | 2004 | Active |
| Aspen Air & Heat LLC | HVA | 2015 | Active |
| Battlefield Mechanical LLC | HVA | 2026 | Active |
| Beacon Electrical Services Inc | HVA | 2009 | Active |
| Better Services LLC | HVA | 2015 | Active |
| Bion Inc | HVA | 2008 | Active |
| Bishop HVAC Service LLC | HVA | 2012 | Active |
| Branair Inc | HVA | 2016 | Active |
| Breeden Heating & Air Inc | HVA | 2006 | Active |
| Breeden Heating And Air South Inc | HVA | 2023 | Active |
| Breeden Mechanical Design Inc | HVA | 2011 | Active |
| Breeden Mechanical South Inc | HVA | 2025 | Active |
| Brothers Mechanical Services LLC | HVA | 2007 | Active |
| Chamberlain Services LLC | HVA | 2009 | Active |
| CJF Services LLC | HVA | 2021 | Active |
| Cold Ease Services LLC | HVA | 2015 | Active |
| Commercial Tech Inc | HVA | 2011 | Active |
| Cool Breeze Services Co | REF | 2006 | Active |
| Countryside Heating & Air Inc | HVA | 1999 | Active |
| Daniel Reddick And Sons Inc | HVA | 2015 | Active |
| Dean Sheetmetal Inc | HVA | 2013 | Active |
| Dean Technologies Inc | HVA | 2009 | Active |
| Diamond S Management Group Inc | HVA | 2014 | Active |
| Doyle Systems LLC | HVA | 2015 | Active |
| Dreamer Heating And Cooling LLC | HVA | 2026 | Active |
| Edwards Air Inc | HVA | 2011 | Active |
| Elias & Son Plumbing LLC | HVA | 2013 | Active |
| Express Tech Air LLC | HVA | 2018 | Active |
| F & V Contracting LLC | HVA | 2020 | Active |
| General Sheet Metal Co. Inc. | HVA | 2020 | Active |
| Global Hospitality Engineering & Projec Management LLC | HVA | 2026 | Active |
| GW Mechanical LLC | HVA | 2015 | Active |
| Heating And Cooling Mechanics LLC | HVA | 2024 | Active |
| HVAC Done Ez LLC | HVA | 2020 | Active |
| Integrity HVAC Services LLC | HVA | 2017 | Active |
| J Hood Heating Cooling And Plumbing LLC | HVA | 2026 | Active |
| J Hood Services LLC | HVA | 2021 | Active |
| J J Air Conditioning LLC | HVA | 2022 | Active |
| JBB Heating Air Conditioning & Refrigeration Co | HVA | 1992 | Renew by Oct 31, 2026 |
| Jett Service Inc | HVA | 1998 | Active |
| JM Mechanical Contractor Services LLC | HVA | 2013 | Active |
| Kincheloe Comfort Solutions LLC | HVA | 2015 | Active |
| Kwang Lee Construction Inc | HVA | 2006 | Active |
| Lensis Builders Inc | HVA | 1997 | Active |
| LJ Contractors LLC | HVA | 2015 | Active |
| Logis-Tech LLC | HVA | 2015 | Active |
| Mabrys Construction Inc | HVA | 2009 | Active |
| Manantial HVAC LLC | HVA | 2026 | Active |
| Martin Heating & Air Conditioning LLC | HVA | 2021 | Active |
| MDV Building Solutions Corp | HVA | 2012 | Active |
| Mid Atlantic Heating And Air Conditioning LLC | HVA | 2017 | Active |
| Mja Design Inc | HVA | 1994 | Active |
| Nationwide General Contractor Inc | REF | 2011 | Active |
| Nova Facility Solutions Inc | HVA | 2020 | Active |
| Ohi Of Virginia Inc | HVA | 2003 | Active |
| Orellana S Heating And Air Conditioning LLC | HVA | 2025 | Active |
| Papke Heating And Air Conditioning LLC | HVA | 2025 | Active |
| Press Mechanical Contractors Inc | HVA | 2021 | Active |
| Pride Air Conditioning & Heating Service Co. Inc. | HVA | 2008 | Renew by Nov 30, 2026 |
| Professor Heating And Air LLC | HVA | 2026 | Active |
| PRP LLC | HVA | 2006 | Active |
| Psi Production Inc | HVA | 2023 | Active |
| R Tech Services LLC | HVA | 2014 | Active |
| Rec Elite Mechanical Services LLC | HVA | 2026 | Active |
| Rescue Heating & Air Conditioning LLC | HVA | 2026 | Active |
| Reyes Air Solutions Inc | HVA | 2025 | Active |
| RLB SVCS Inc | HVA | 2004 | Renew by Nov 30, 2026 |
| Ruiz Construction Solutions LLC | HVA | 2021 | Active |
| Safe & Fast Services LLC | HVA | 2026 | Active |
| Service Cart LLC | HVA | 2020 | Active |
| Shaw Services Air Conditioning And Heating LLC | HVA | 2003 | Active |
| Slaughter S Heating And Air LLC | HVA | 2021 | Active |
| Snap Fix LLC | HVA | 2023 | Active |
| Stewart & Goss LLC | HVA | 2007 | Active |
| Superior Air Heating & Cooling Inc | HVA | 2025 | Active |
| Tabora Air Conditioning & Heating LLC | HVA | 2012 | Active |
| Tradetropic LLC | HVA | 2013 | Active |
| Trinity Air Conditioner & Heating Inc | HVA | 2009 | Active |
| Trivett Mechanical Inc | HVA | 2013 | Active |
| Turners Acquisitions LLC | HVA | 2024 | Active |
| Twin Air LLC | HVA | 2005 | Active |
| Umbrella Mechanical Services LLC | HVA | 2013 | Active |
| Uno Air Solutions LLC | HVA | 2026 | Active |