For higher hot water demands we recommend a heating only boiler from the HRE SB range, together with an OSO Supercoil indirect hot water tank OSO SC150. The 120 litre and 150 litre tanks will fit underneath the boiler, and due to the compact construction the installation will fit into a cupboard of 600mm deep, 700mm wide and 2350 mm high. The 150 litre has a fast recovery coil, which means better hot water but also is adaptable for a heat pump in the future.