9
Heat regulating apparatus; Boiler control instruments; Boiler control instruments; Ducts [electricity]; Metal ducts [electric]
11
Heating boilers; Heat pumps; Heating plates; Stoves for heating; Heating elements; Fan heaters; Heating apparatus; Heat generators; Heat accumulators; Electric heating cables; Electric heating fans; Radiators, electric; Hot water heating installations; Heating apparatus, electric; Heat pumps for energy processing; Flues for heating boilers; Water heaters and boilers; Gas heat generators; Gas fired heating installations; Heaters for vehicles; Oil fired boilers; Heating installations for industrial use; Heat generating apparatus; Boilers for use in heating systems; Electrical heating elements in the form of foil; Thermal radiators for the heating of buildings; Solar energy powered heating installations; Electrical heating elements in the form of cables; Storage water heaters; Heat accumulators; Aeration apparatus; Solar thermal collectors [heating]; Refrigerators; Clothes dryers; Electric heaters; Tubular elements; Aluminium elements; Foil elements; Thick film elements; PTC elements; High-performance elements; Ceramic elements; Stoves; Heat-regulating ventilation products; Cassettes for fireplaces; Chimney blowers; Chimney extractors