Radiator heat distributing apparatus
Reactive heating control system
Recirculating fan thermostat
Reduced outside air capability for unit ventilators
Register blade mover
Remotely activated opposing pressure air flow control register
Remotely activated opposing/aiding air flow control register
Remotely controlled electrically actuated air flow control regis
Reset controller with improved air flow span adjustment
Residential heating and air conditioning control system
Retrofit HVAC zone climate control system
Reversible damper means
Reversible fan of electronic module
Ridge vent with shape-memory actuated heat valve
Room air conditioner
Room grating control
Room temperature control apparatus having feedforward and feedba