Our easy-install Thermostatic Radiator Valves (TRVs) come either wired or wireless depending on each customer preference. Our TRVs are essential for the reduction of energy consumption within a building. Working in conjunction with our Temperature Sensors, the HeatingSave TRVs control the hot water flow around each radiator, allowing less hot water to flow around the radiator on warm days, and more hot water to flow on colder days.