UK households urged to set radiators between 2-4 to cut energy use and save money.

UK households are urged to lower radiator settings to save money and reduce energy waste, according to consumer group Which?. Experts advise most rooms should use settings between two and three—around 15°C to 20°C—while the living room may need three to four. Setting radiators higher than three, especially when the thermostat demands heat, can force boilers to run unnecessarily, increasing energy use and costs without boosting comfort. Proper use of thermostatic radiator valves helps maintain warmth efficiently, reducing both bills and environmental impact amid rising energy prices.