• A-Ryung

• A.O. Smith

• AAON

• ACR Copper Pipe

• ADP

• Advantage

• Advantco

• AEC

• AGT (Absolute Graphic Technologies)

• Alco

• Allied Armstrong

• AM General

• American Gas Lamp Works

• American Water Heater

• Apiste

• Apple

• Aprilaire

• AquaComfort

• Atlas Copco - Compressed Air

• Avalco

• Bacharach

• Bard

• Baso

• Beaver Research

• Belimo

• Beverage Air

• Bilstein

• Bitzer

• BKW

• Black Pipe

• Blodgett

• Blueair

• Bohn

• Bohn Refrigeration

• bosch

• Bosch Thermotechnology

• Bradford White

• Braeburn

• Bristol Compressors

• Burks

• Burnham

• Caravell

• Carel

• Carlyle

• Carrier

• Carrier Industrial

• Carrier Interamerica Corporation

• Carrier Refrigeration

• Carrier Transicold

• CashAcme

• Century

• Chromalox

• ClimateMaster

• Cold Jet

• Colmac Coil

• Cooper Atkins

• Copeland

• Cozy Heating Systems

• Cuppone

• Daikin

• Daikin-Oil Chiller

• Danfoss

• Delta T Systems

• Deltatherm

• Diversitech

• Dunkirk

• Eaton

• Ebara

• ElectraLED

• Electrolux

• Elkay

• Emerson

• Empire Comfort

• ESP

• Eurocold

• Everpure

• Fasco

• Fenwal Controls

• First Company

• Friedrich

• Frigadon

• Fryka

• Frymaster

• Fuhrmeister

• General Aire

• General Motors

• Goodman Amana

• Governale Brother Inc.

• Gree

• Green Filter

• Greenheck

• Grundfos

• GTA, Inc.

• Habor

• Haier

• Hart and Cooley

• Hastings

• Hawa/Haewa

• Heat Controller (Comfort-Aire)

• Heat-N-Glo