Refrigeration method and apparatus for building air...
Regenerative heat exchanger
Register assembly with adjustable faceplate connectors
Register grille and connector frame with releasable connection
Register with injector nozzle
Register-mounted wicking passive humidifier
Regulator for a damper assembly
Relay contact monitoring system
Remote control unit
Remote sensing system for a dehumidifier
Remote-controlled device for rapidly opening a skylight
Remotely trippable and resettable damper
Removable access panels for rooftop unit
Removable casing flange/insulation retainer
Removable exhaust hood
Repositionable attenuator
Resettable constant volume rate of flow of primary air in an...
Residential heating and air conditioning control system
Respiratory apparatus
Retractable float mechanism for water level indicator