A boiler that runs at "full steam" all day will only succeed in burning a hole in your pocket, leaving you hot under the collar. Unfortunately, you can take the heat out of the situation simply by installing Siemens thermostats in your room and on your hot water cylinder. The room thermostat ensures the temperature of your home is automatically adjusted to your own personal comfort level and switches the boiler off when that temperature is reached. The cylinder thermostat measures the temperature of the water stored in your cylinder, ensuring that it's just right for baths and washing up without wasting valuable fuel. As an added comfort control, thermostatic radiator valves can be fitted which allow each room to have its own temperature setting. Step 2, therefore, is fitting temperature controls. This can save as much as 20% on your fuel bill.