9
Measuring, inspecting, control and regulating apparatus and systems for heating, water heating, combined heating and water heating, and ventilating apparatus, powered by electricity, oil, gas, geothermal heat, solar power, ambient air heat or renewable fuels, for solar collectors and pumps and for parts for the aforesaid goods; Data processing equipment and installations; Fuel cells; Photovoltaic collectors
11
Heating, water heating, combined heating and water heating, and ventilating apparatus, thermal solar collectors, including pumps and parts for the aforesaid goods, powered by electricity, oil, gas, geothermal heat, solar power, ambient air heat or renewable fuels; Fittings for all the aforesaid goods and replacement parts for any of the aforesaid goods; Room and building heaters, instantaneous water heaters, storage water heaters, circulation water heaters, air heaters, hot water tanks, solar hot water tanks, circulation water heating apparatus, instantaneous water heating apparatus, storage water heating apparatus, water and air heaters, bath water and drinking water heaters, wall-mounted boilers, tankless water heating apparatus, tankless drinking water heaters, for central and/or decentral heating and hot water supply, being in the form of wall-mounted, floor-standing apparatus; Apparatus for installation, in particular wall installation, and individual assemblies thereof, Namely heat exchangers, not parts of machines, Heating boilers, Burners, Heat accumulators; Fireplaces and fireplace inserts
37
Assembly, installation and repair of heating, water heating, combined heating and water heating, and ventilating apparatus, solar collectors and pumps and parts for the aforesaid goods, powered by electricity, oil, gas, geothermal heat, solar power, ambient air heat or renewable fuels; Consultancy for commissioning or repair and maintenance of apparatus and installations for heating and hot water systems via call centres and hotlines, included in class 37
42
Technical consultancy and planning for apparatus and installations for heating and hot water systems