Pressure gauges; Temperature gauges

Air heating apparatus for commercial use; Apparatus for water heating; Central heating boilers; Central heating installations; Central heating radiators; Combined heating and air conditioning apparatus; Domestic central heating appliances; Electric heating apparatus; Fixed heating burners; Flues for heating boilers; Gas boilers for central heating; Heating apparatus; Heating boilers; Installations for heating; Solar heating apparatus; Cooling apparatus; Air heating installations for industrial use; Air heating installations for residential use; Home heating installations; Regulating apparatus for gas pipe installations; Radiators (heating); Heaters; Regulating accessories for water or gas apparatus and pipes; Water treatment apparatus; Heat exchangers (not parts of machines); Heat exchangers for central heating purposes; Electric water heating apparatus; Gas boilers for water heating; Hot water heating installations; Water heating apparatus (other than parts of machines); Water heating installations; Chiller units being parts of water cooling installations; Water cooling apparatus; Water chillers; Water coolers; Heat pumps; Heat pumps for energy processing; Hot water heaters; Expansion tanks for central heating installations; Expansion chambers; Pressure tanks (water); Pressure water tanks; Pressurised water tanks; Backflow seals; Fuel burners; Gas burners; Solar thermal collectors (heating); Solar thermal collectors for heating; Thermal fluid heaters; Thermal radiators for the heating of buildings; Thermal storage apparatus (solar energy) for heating; Thermal storage instruments (solar energy) for heating