WAAON
WAE Smith
WAiredale International Air Conditioning
WBaxi
WBELIMO Holding AG
WBuffalo Forge Company
WCarrier Global
WChromalox, Inc.
WChunlan Group
WDaikin
WDe'Longhi
WDeLclima
WEcobee
WEmbraco
WFuji Electric
WFujitsu
WGeneral Airconditioners
WGoodman Global
WGoogle Nest
WGree Electric
WHaier
WHart & Cooley
WHitachi
WJohnson Controls
WJøtul
WKMC Controls
WLennox International
WLG Electronics
WMidea Group
WMirgor
WMitsubishi Electric
WMitsubishi Heavy Industries
WOASIS International
WPanasonic
WPetra Engineering Industries Company
WRheem Manufacturing Company
WRobert Bosch GmbH
WSampo Corporation
WSamsung Electronics
WSanyo
WTaikisha
WThermax
WThermo King
WToshiba
WTrane
WViega
WViessmann
WVoltas
WWalton Group
WWhirlpool Corporation
WWorcester, Bosch Group