11 Household appliances, namely, ovens, ranges, refrigerators, freezers, microwave ovens, dishwashers, clothes washers, clothes dryers, barbecues, furnaces, heaters, gas lamps, air conditioners, humidifiers, dehumidifiers, water heaters, central vacuum cleaners, air cleaners and fireplaces, heating and hot water units; water purification systems; air cleaning and purifying units; power roof ventilators for exhaust systems; hoods for exhaust ducts, vents, space heaters