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
Space heating system with fuel cells and a connection to a...
Steam generating system including means for reinitiating the ope
Steam generating system including means for reinitiating the ope
Steam heating apparatus
Steam heating equipment with condensate vessel and return line
Summer operation apparatus for a heating system
Supplemental heat source
Supplemental vehicle heating apparatus with long heating cycle
System for after-run heating of a vehicle interior