- Aire-Flo
- AirEase
- Amana
- American
- American Standard
- Ameristar
- Armstrong
- Bard
- Boyertown Furnace Company
- Bryant
- Burnham
- Carrier
- Centurion
- Coleman
- Comfort-Aire
- Comfortmaker
- Concord
- Day & Night
- Dayton
- Ducane
- Dunkirk
- Eco-King
- Emerson
- Evcon
- Frigdaire
- Gibson
- Goodman
- Hallmark
- Heat Controller
- HeatMaster
- Intertherm
- Janitrol
- Kenmore
- Lennox
- Luxaire
- Maytag
- Miller
- Nordyne
- Noritz
- Olsen
- Oneida Royal
- Payne
- Regency
- Reliance
- Rheem
- Ruud
- Slant-Fin
- Tempstar
- Thermo Pride
- Trane
- Weatherking
- Westinghouse
- Whirlpool
- Williamson-Thermoflo
- York