• A-Ryung

• A.O. Smith

• AAON

• ACR Copper Pipe

• ADP

• Allied Armstrong

• American Gas Lamp Works

• American Water Heater

• Apiste

• Aprilaire

• AquaComfort

• Bard

• Beverage Air

• BKW

• Black Pipe

• Bradford White

• Burks

• Burnham

• Carlyle

• Carrier

• Carrier Industrial

• Carrier Refrigeration

• Carrier Transicold

• Chromalox

• ClimateMaster

• Cold Jet

• Copeland

• Daikin

• Daikin-Oil Chiller

• Deltatherm

• Dunkirk

• Electrolux

• Empire Comfort

• Eurocold

• First Company

• Friedrich

• Frigadon

• Fryka

• Goodman Amana

• Grundfos

• Habor

• Haier

• Hart and Cooley

• Hastings

• Hawa/Haewa

• Heat Controller (Comfort-Aire)

• Heat-N-Glo

• Hoffman (nVent)

• Hoffmann Filter Corporation

• Honeywell

• Hoshizaki

• Hyfra

• Ice-O-Matic

• ICP

• Innovair

• Kanto-Seiki

• Kenmore

• King

• KLH

• Koolant Koolers

• Kouwakougyo

• Kramer

• Kwangrim

• Laars Heating Systems Company

• Lahntechnik/Duotemp

• Lennox

• LG

• Liebert

• Lochinvar

• Manitowoc

• Midco International

• Midea

• Mitsubishi Electric Corporation

• Modine

• National Comfort Products

• Navien

• Nordyne

• Nordyne Miller

• OmniTemp

• Orion Machinery

• Panasonic

• Pfannenberg

• Primera

• Pro-Press

• Randell

• Raypak

• Re-Verber-Ray

• Reliance

• Reznor

• Rheem Ruud

• Rittal

• Ritter & Bader

• Roberts Gordon

• S.I.M. Engineering S.R.L.

• Saint Clair Systems

• Sanyo

• Schimpke

• Scotsman

• Space Pak

• State Hot Water Heater