ventilation hoods; air deodorizing apparatus; air cooling apparatus; air filtering installations; air reheaters; air dryers; air-conditioning apparatus; heating installations; heating apparatus, electric; fans [parts of air-conditioning installations]; cooling appliances and installations; heat pumps; dehumidifiers; humidifiers; air sterilisers; ventilation [air-conditioning] installations and apparatus; ventilation [air-conditioning] installations for vehicles; germicidal lamps for purifying air; coils [parts of distilling, heating or cooling installations]; ionization apparatus for the treatment of air or water