As winter approaches, many households are seeking ways to reduce energy costs. Money Saving Expert Martin Lewis has shared advice on adjusting heating systems to save money while staying warm.
Lewis suggests turning down the thermostat by just one degree, which could save the average home around £90 per year, according to the Energy Saving Trust. While many set thermostats in the 20s, reducing from 21°C to 20°C can make a significant difference. The World Health Organisation recommends 18°C for healthy adults, with slightly higher temperatures for the elderly or young.
For homes with combi boilers, reducing the flow temperature—the water circulating through radiators—can cut gas bills by up to 3%, saving roughly £65 annually. Combi boilers operate most efficiently when heating radiators to 60°C or below, but default settings often range between 70°C and 80°C.
Those with a boiler and hot water cylinder should set the cylinder to 70°C to ensure safety. The Health and Safety Executive requires stored hot water to be kept at 60°C to prevent legionella bacteria, with the boiler providing higher temperatures to account for heat losses. Lowering the flow temperature for heating can reduce gas bills while maintaining safe hot water.
Lewis advises consulting a Gas Safe-registered engineer when adjusting boiler settings to ensure safety and efficiency.
