Innovative down to the very last detail
The GasSolarUnit is a hot water storage tank with an integrated gas condensing boiler. The hot water storage tank is filled with depressurised storage water. The storage water is heated via a stainless steel corrugated pipe heat exchanger via the condensing boiler. Alternatively, the storage tank can also be heated using solar energy. In order to heat domestic water, there is a stainless steel corrugated pipe heat exchanger inside the storage tank which is fitted over the entire water line of the storage tank.
Through the large heat exchanger surface, correspondingly large quantities of domestic water can be quickly heated. The storage tank always operates as a stratified storage tank. This means that the storage tank potential is considerably increased yet again and optimally used, especially when using solar energy. However, even without solar energy use, the stratified storage tank concept allows even larger hot water quantities to be handled.
The integrated boiler has a fully electronic digital control system. This ensures that the feed temperature is controlled by atmospheric conditions. It regulates the storage tank temperature and contains timer programmes which can be individually set for the heating and water heating.
Gas condensing boiler efficiency up to 110%
Through the innovative construction of the aluminium boiler unit with central combustion chamber and its spiral-shaped downstream heating surface, the ROTEX GasSolarUnit achieves excellent efficiency of up to 110%.







