7
Generators of electricity; Pumps, compressors and blowers, not used in agricultural machines and implements; Pumps, not used in agricultural machines and implements; Steam engine boilers; Pumps [parts of machines, engines or motors], not used in agricultural machines and implements; Pumps [machines], not used in agricultural machines and implements; Pumps for heating installations; Water heaters being parts of machines; Mineral water making machines; De-aerators for feedwater; Water separators
9
Communications apparatus and instruments; Boiler control apparatus; Boiler control instruments; Solar panels; Portable solar panels for generating electricity; Solar batteries; Thermostats; Solar panels for the production of electricity
11
Refrigerating and freezing equipment; Heating, ventilating, and air conditioning and purification equipment (ambient); Burners, boilers and heaters; Heat pumps; Gas boilers; Heating boilers; Electric boilers; Boilers; Pressure water tanks; Water purification tanks; Waste water treatment tanks; Solar heating panels; Solar thermal collectors [heating]; Hot water heating installations; Heating apparatus; Heating apparatus, electric; Heating installations; Water heaters [apparatus]; Feeding apparatus for heating boilers; Expansion tanks for central heating installations; Thermostatic valves [parts of heating installations]; Heaters for baths; Boilers, other than parts of machines; Water supply installations
37
Building, construction and demolition; Building repairs; Machinery installation, maintenance and repair; Maintenance, servicing and repair of power generating apparatus and installations; HVAC (Heating, ventilation and air conditioning) installation, maintenance and repair; Cleaning of buildings; Maintenance and repair of parts and fittings for buildings; Repair of buildings; Vehicle repair, maintenance, and refuelling; Providing information relating to the repair or maintenance of pumps; Pump repair and maintenance; Repair or maintenance of boilers; Pump repair; Heating equipment installation and repair