Home Product overview DHW heating DHW heating Aquarea If you use an air-to-water heat pump in your home, hot water will be heated in the storage tank connected to this system. There is a large number of DHW storage tanks from 180 l to 410 l to choose from. However, if you use another source (e.g. an air-to-air heat pump), it is possible to use a storage tank with a built-in Aquarea DHW heat pump for water heating. Product website Price calculation