The Vaillant aroTHERM air-water heat pump heats and cools, and combined with a storage cylinder also produces hot water. That’s what complete comfort looks like these days! At the same time, the system is especially space-saving because the heat pump is located in the outdoor area. Only the heat transfer station and the hot water storage cylinder are space-savingly installed in the house. Conveniently, the new air-water also functions alone or as a hybrid system in combination with existing heating appliances. That lowers the CO₂ emission and cuts heating costs. So it’s not only convincing from design aspects!