11 Air conditioners; air purifiers; humidifiers; de-humidifiers; Ventilating apparatus and installations, namely, ventilation hoods, ventilating fans for residential, hotel and office use, energy recovery ventilators, heat recovery ventilators; air cooling apparatus; air heating apparatus in the nature of electric heaters; air heating installations in the nature of electric space heaters; water heaters; hot water heaters; refrigerating apparatus in the nature of refrigerating machines; refrigerating installations; apparatus for freezing, namely, freezers; installations for freezing, namely, fridge-freezers, electric freezers for residential, hotel and office use; chilling apparatus, namely, refrigerators; water chillers being water coolers; heat pumps; air conditioning fans; heat exchangers, other than parts of machines; air conditioning filters; hot-water space heating apparatus for industrial purposes; floor heating apparatus; air freshening apparatus in the nature of electric air deodorizers; electric air deodorizing apparatus; electric room deodorizing units; deodorant apparatus, not for personal use in the nature of dispensing units for room deodorants