Using the same principal as hand warmers, The inside the ‘Heat Battery’ is an inorganic non toxic salt based phase change material (PCM) incorporating a heat exchanger and immersion. This is surrounded by a high quality insulation which offers you the lowest heat loss on the market.
The ‘Heat Battery’ is charged/heated via the immersion using PV, cheap night time electricity, a boiler, a solar thermal array, or a combination of these.
Cold water enters the ‘Heat Battery’, passes through a highly efficient heat exchanger, picks up heat from the PCM and comes out hot. So hot in fact that we install a blending valve to reduce the temperature, so that it doesn’t scald you. The ‘Heat Battery’ uses less power per litre of heated water than in a hot water cylinder and if you extend your property or require a bigger volume of water, you can add more ‘Heat Batteries’ to your system or have them as stand alone in areas where you would just normally have cold water.