Heating installations using solid, liquid or gas fuels or electricity, central heating boilers, boilers for heating installations, electric radiators for heating; heat exchangers, not parts of machines; ceramic stoves, and kitchen stoves in the nature of cooking stoves; solar thermal collectors for heating; steam, gas and fog generators, and steam furnace boilers, other than parts of machines; acetylene generators, oxygen generators in the nature of oxygen generator for processing water by increasing oxygen content in the water, nitrogen generators; installations for air-conditioning and ventilating installations in the nature of ventilating fans for industrial purposes; cooling installations, namely, cooling installations for water, and freezers; electric water heaters, barbecues, electric laundry driers; hair driers; sanitary installations in the nature of steam rooms, taps being faucets, shower installations in the nature of plumbing fittings in the nature of shower control valves, shower heads, toilets being water-closets, shower and bathing cubicles, bath tubs, toilet seats, sinks, wash- hand basins being parts of sanitary installations, washers for water taps, valves taps being parts for sanitary installations; water softening apparatus; water purification apparatus; water purification installations; waste water purification installations; filters for aquarium and aquarium filtration apparatus; industrial type installations for cooking drying and cooling purposes, namely, industrial furnaces, industrial humidifiers; pasteurizers for use in food, beverage, pharmaceutical industries and sterilizers