Filtering units for water; Heat accumulators; Heat exchangers not being parts of machines; Heat pipes to cool heat producing components; Heating systems composed primarily of tubes, pipes and pre-assembled manifolds though which cold or low temperature water circulates; Hot-air space heating apparatus; Hot-water space heating apparatus; Pavement heating apparatus; Pipes being parts of sanitary facilities; Pipes for heating boilers; Steam radiators for heating buildings; Thermostatic valves

Heat pipes to cool heat producing components; Central heating radiators; Heating boilers; Solar heat collection panels; Boilers for heating installations; Electric heating fans; Electric radiators for heating buildings; Heating installations; Hot-air space heating apparatus; Hot-water space heating apparatus; Pipes for heating boilers; Radiators; Solar thermal air systems for heating purposes; Thermostatic valves