Lowering boiler temperature to 60°C cuts UK gas use by 12% with no cost, saving money and improving efficiency.

Lowering a boiler’s flow temperature from 80°C to 60°C can cut UK household gas use by 12% with no upfront cost, according to a University of Salford study. This simple adjustment, especially effective on combi-boilers, saves money without significantly affecting heating performance, particularly in well-insulated homes. Experts also recommend annual boiler servicing—around £90—to prevent efficiency drops that could add £87 to yearly bills. Installing thermostatic radiator valves for about £10 each can save £40 annually by heating only occupied rooms. Reducing the thermostat by 1°C may cut bills by 5%, while insulation and draught-proofing offer long-term savings, though proper ventilation is key to avoiding damp and mold.