Air conditioners; humidifiers; dehumidifiers; air cooling apparatus; heat pumps; refrigerating machines and installations; cooling evaporators; air handlers; energy and heat recovery ventilators; HVAC units; coils as parts of heating or cooling installations; hot air blowers; water coolers; electric coolers; air conditioning apparatus comprised of units having casings, fans, cooling and heating coils sprayers, and pumps; air conditioning apparatus; cooling units for industrial purposes; furna...

electronic controls and thermostats for heating and air conditioning systems

CONTROLS FOR HEATING AND AIR-CONDITIONING SYSTEMS

FURNACES, INCLUDING FLOOR AND WALL FURNACES; BOILERS; GAS BURNERS; HUMIDIFIERS; AIR SUPPLY DUCTS FOR ROOM HEATING, COOLING OR VENTILATING SYSTEMS; AIR-FLOW VELOCITY AND SOUND ATTENUATORS FOR FORCED AIR HEATING, COOLING OR VENTILATING SYSTEMS; AND OUTLET DIFFUSERS AND GRILLS FOR SUCH SYSTEMS

FURNACES, INCLUDING FLOOR [ AND WALL ] FURNACES, [ BOILERS, ] AND GAS BURNERS

Air conditioners; humidifiers; dehumidifiers; air cooling apparatus; heat pumps; refrigerating machines and installations; refrigerator condensers; heat exchangers not being parts of machines; economizers, namely, devices for warming feed water in heating boilers; separators for the cleaning and purification of gases and liquids; heat accumulators; cooling evaporators; apparatus for heating, cooling, and air conditioning, namely, variable refrigerant flow heating and air conditioning units; d...