CALDERA

Heating apparatus; heating installations; central heating apparatus; electric heating installations; thermal storage apparatus for heating; storage heaters; electrical storage heaters; storage water heaters; thermal storage instruments for heating; heating apparatus for use in the home; heat exchangers; heat exchangers for central heating purposes; automatic temperature regulators; valves (thermostatic -) [parts of heating installations]; heat sinks for use in heating apparatus; parts and fittings for the aforesaid; none of the aforesaid being hot tubs or spas in the nature of heated pools