Air-conditioning apparatus; Air-conditioning installations; Air conditioning apparatus; Air filtering installations; Air purifying apparatus; Air sterilizers; Filters for air conditioning; Filters for drinking water; Filters for water filtering apparatus; Heat pumps; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; Humidifiers for central heating radiators; HVAC units; Radiators; Solar thermal air systems for heating purposes; Solar thermal installations, namely, solar thermal modules; Thermostatic valves; Thermostatic valves as parts of heating installations; Ventilating fans for commercial and industrial use; Water heaters; Air filters for domestic use; Air filters for furnaces; Air filters for industrial installations; Central heating radiators; Electric air deodorizing apparatus; Ionization apparatus for the treatment of air; Regulating accessories for water supply, namely, metered valves