WHeat pump
WAbsorption heat transformer
WAbsorption refrigerator
WApplications of the Stirling engine
WEcoCuteWEinstein refrigerator
WEntropy production
WGeothermal heat pumpWGeothermal heatingWHeat pump and refrigeration cycle
WIcyball
WRefrigerator
WReversing valve
WPeter von Rittinger
WSolar-assisted heat pump
WStirling engineWStoddard engine
WThermal mass refrigerator
WThermoacoustic heat engine