Dimplex quantum storage heaters are the next generation of heater which utilise Economy 7 electricity to keep you warm and importantly your bills low. They heat up using cheap night time electric and by having NASA grade insulation retain the heat until you would like it. They have a thermostat and programmer built in so none of the heat is wasted. Older style storage heaters are notorious for being cold bye the evening. The thermostat and programmer ensure that the heat is retained for when you want the room warm.