What are thermostatic radiator valves (TRVs)?
TRVs sense the air temperature around them and regulate the flow of hot water entering the radiators to keep a set temperature in a room. Again, they can help you save money and energy – by allowing temperatures in some rooms than in others, and to turn off the heating in rooms that aren’t used. In the majority of cases TRVs can not turn off the boiler when the whole house has reached the right temperature. To do that, you will need a room thermostat as well. Radiators in the space containing the room thermostat should not normally have TRVs. But if they do, you should keep the TRVs on their highest possible settings, and set the room thermostat to the required temperature instead. By installing TRVs, you could save around £10 a year and around 45kg of CO2 a year. Hot advice – programmable thermostats, room thermostats and TRVs all need a free flow of air to sense the temperature. They should not be covered by curtains or blocked by furniture. Nearby sources of heat such as lamps could
