Apparatus for humidifying ventilating air; humidifiers; Air cleaners and purifiers for residential and commercial use, incorporating an air filter and accompanying housing; Fresh air exchangers for use in residential and commercial forced air heating and air conditioning systems; Heat recovery ventilators for heating and cooling applications; electrically powered heat exchangers, other than parts of machines, for residential use; Porous pad evaporators used in humidifiers; Evaporative coolers for residential and commercial use; Wettable air filters for filtering, humidifying and ventilating air in domestic and commercial applications; air movers, namely, Air impellers for ventilation; Air conditioning apparatus; Air conditioning installations; Air filtering installations; Apparatus for disinfecting water; Dehumidifiers; Dehumidifiers for household purposes; Dehumidifiers for household use; Dish disinfectant apparatus for industrial purposes; Disinfectant apparatus for banknotes; Disinfectant apparatus for medical purposes; Electric radiators; Fans for air conditioning apparatus; Floor heating apparatus; Gas scrubbing apparatus; Hand basins being parts of sanitary installations; Heating installations; Hot-air space heating apparatus; Hot-water space heating apparatus; Hot water heating installations; Sanitary installations in the nature of steam rooms; Shampoo basins being parts of sanitary installations; Space heating apparatus; Steam heating apparatus; Ventilating exhaust fans; Wash- hands basins being parts of sanitary installations; Industrial dehumidifiers