Air-handling units; Chimney flues; Fan heaters; Heat pumps; Heating boilers; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; Radiators; Storage heaters; Thermostatic valves; Thermostatic valves as parts of heating installations; Valves as part of radiators; Thermostatic mixing valves
Environmental Control Apparatus