Flues and installations for the discharge of exhaust gases; burners, boilers and heating appliances; heating, ventilation, air-conditioning and air-purifying appliances and installations; fireplaces; personal heating and drying appliances; control and safety accessories for water and gas installations; sanitary installations and devices, water supply installations; chimney dampers; flues for chimneys; flue shafts for heating appliances; combustion ducts for heating boilers; heating, ventilation and air-conditioning installations; heaters; radiator elements; electric heating installations; underfloor heating; underfloor heating appliances and installations; solar thermal collectors [heating]; water distribution fittings for heating appliances; heating appliances for residential premises; pipes for heating boilers; boilers for heating systems; combined heating and air-conditioning appliances; valves as parts of heating appliances; heating installations for commercial purposes; heating installations; solar-powered heating appliances; gas-powered heating appliances; radiators [heating]; heating systems for gas; heat storage apparatus for heating [solar energy]; thermostatic valves [parts of heating systems]; control units [thermostatic valves] for heating systems; heat storage devices for heating [solar energy]; air-source heat pump water heaters; heat pumps; heat exchangers; heat storage devices; heat storage devices with heat storage elements made of foamed or non-foamed ceramic, plastic, mineral or composite materials; heat storage devices with heat storage elements made using geopolymers, heat collectors; heat accumulators; heat generating devices; heat recovery systems; heat pumps for energy processing; jacketed heat exchangers; heat control devices [valves] as parts of heating systems; heat exchangers for fireplaces; cooling and heating systems for processing chemical products; heat storage stoves; fans for heat exchangers; heat storage devices for heating purposes [solar energy]; underfloor heating systems; underfloor heating devices and installations; smoke dampers as parts of air conditioning and ventilation systems; air filters for air conditioning purposes; valves for air conditioning systems; air filters for air conditioning systems; extractor hoods [ventilation or air conditioning]; air conditioning systems; air conditioning units; air conditioning units for residential purposes; air conditioning systems for commercial purposes; ventilation systems and equipment [air conditioning]; radiators [for commercial air conditioning purposes]; burners for heating systems; burners for boilers; heating appliances for gaseous fuels; heating appliances for liquid fuels; heating appliances for solid, liquid or gaseous fuels.