Metal profiles for heat exchangers, heat accumulators or ventilating installations; cover plates of metal as semi-finished goods for later use in heat exchangers, heat accumulators or ventilating installations.

Heat pumps; heat exchangers, heat accumulators, heat generation apparatus; heat recovery systems; heat accumulator apparatus; heat pumps for energy processing; sheathed heat exchangers; heating-, ventilating and air-conditioning installations; cold air blower fans; cooling elements for heating apparatus; cooling elements for cooling apparatus; cooling elements for ventilating installations; combined heating and air-conditioning installations; air heating installations; air cooling apparatus; boiler pipes; motorised fans for ventilation purposes; distributors for uniform air distribution; valves as parts of heating installations; fans for ventilation; fans for heat exchangers; hot water heaters; hot water storage tanks; air-heat-pump-water heaters; electrically-heated hot water storage tanks; supply air distributors; cover plates of metal as adapted parts or accessories of heat exchangers, heat accumulators or ventilating installations.