British Gas and other customers worried about sky-high bills can switch to HeatingSave's fuel and money-saving heating control system. Dry cycling occurs when the thermostat turns on a boiler for a very short time, not giving the boiler chance to fire up properly. This is because thermostats are dumb devices and have no idea of what they are connected to. HeatingSaveprevents dry cycling as it knows the operating characteristics of your particular boiler(s) and runs them efficiently, preventing dry cycling which wastes fuel and puts undue wear on the boiler.