Control device for a warm air furnace
Control to operate a forced air blower
Controller for two-stage heat source, usable with single and...
Dual-rate fuel flow control system for space heater
Electronic control and method for increasing efficiency of heati
Electronic control system for a gas-fired/hot air furnace with i
Electronic humidity control
Electronic thermostat employing adaptive cycling
Electronic thermostat having safety feature
Electronic thermostat with switched power converter
Emergency heating system control circuit
Energy and peak-load conserving thermostat and method with contr
Energy saving furnace controller
Energy saving override blower control for forced air systems
Energy-conserving thermostat and method
Environmental controller for a sealed structure
Fan control for forced air temperature conditioning apparatus
Flame control system for heat exchanger
Flue gas heat recovery apparatus
Flue gas heat recovery apparatus for a forced air home heating s