Refrigerant circuit with fluid heated refrigerant
Refrigerant heating type air conditioner
Regulating device for a central heating plant containing a hot w
Regulating device of a multi-channel heating system for a vehicl
Remote-controlled central air-conditioning system
Reserve automobile heating system
Reverse cycle heating system for a building
Reversible solar assisted heat pump
Run time criteria to control indoor blower speed
Sealed gas heater with forced draft and regulation by microproce
Sealing and air/fuel mixture flow metering plate for gas furnace
Self-optimizing device for controlling a heating system
Self-powered space heating system
Self-pumping water boiler system
Single closed loop fireplace home heating system
Solar assisted heat pump heating system
Solar augmented heat pump system with automatic staging reciproc
Solar heating
Solar-heating system
Space heater utilizing source of waste heat