Air conditioning plants, ventilating systems and devices (air-conditioning), energy regeneration plants and parts of the aforementioned goods, included in this class; regenerative and recuperative energy regeneration plants; air humidifiers for air conditioning plants, air heaters, air filters (air-conditioning), air filtering plants, air cooling devices, air purifying appliances and machines, air driers; heat exchangers, in particular rotary heat exchangers, plate heat exchangers and heat wheels; heat pumps, heat recovery devices, heat accumulators, water heaters and water heater devices, hot-water heating systems; steam generators, gas generators, included in this class, and evaporation generators; fans (for air-conditioning and as piece parts of air conditioning plants, ventilating systems and energy regeneration plants)

Installation of air conditioning plants, ventilating systems and energy regeneration plants