Homeowners with post-2005 combi boilers can save up to £100 yearly by lowering flow temperature to 60°C and making simple efficiency tweaks.

Homeowners with combi boilers installed after April 2005 are advised to lower their boiler’s flow temperature from 70–80°C to around 60°C to cut gas use by 6–8% and save about £55 a year, experts say. This change, which won’t affect home warmth or hot water temperature, helps prevent legionella if kept above 60°C for hot water and 75°C for radiators. Simple steps like reducing the thermostat by 1°C and insulating hot water tanks can also reduce heating bills by up to 10%. These low-effort adjustments may lead to annual savings of up to £100.