The Electric storage combination boiler has a large in built hot water thermal store cylinder, which will provide high pressure hot water for baths, showers etc when connected to the mains cold water giving equal water pressures and also heats the house when connected to underfloor heating or radiators. They are floor standing and usually fitted in a cupboard space. The storage combination boilers can be connected to a cheaper rate off peak meter using the Economy 2000 (Scottish Power) or the Economy 10 Tariff. The boilers available are the Thermaflow and ACV Etech S.