Beat rising energy costs ! Replace your old night storage heaters with modern slim line , elegant fischer low input storage radiators with room thermostats, keeping you in full control of your warmth but delivering savings in your pocket. Use Less Energy and Cut Your Fuel Bills. This Is The Greener Way. Our storage heaters use econ 7 at night but if you need more heat in the day simply turn up the room thermostat and it will give you the heat when you need it. The low input means we can use a normal 13amp socket, but still make use of the cheaper rate at night. The unique chamotte clay core mixed with aluminium enables the heat to be released instantly if needed by simply turning the thermostat up.