The Best Ways to Use Your Boiler Efficiently in the UK

For many UK households, heating is the biggest part of an energy bill. Using your boiler more efficiently can help reduce heating costs without making your home feel colder. In many cases, small changes to settings and heating habits can make more difference than people expect.

One of the easiest ways to improve boiler efficiency is by setting the right temperature. Turning the thermostat higher does not heat your home faster, it only makes the boiler run for longer. Most homes are comfortable at around 18–21°C in living areas, while bedrooms are often better slightly cooler. Keeping a steady temperature usually works better than constantly turning the heating up and down.

Another simple step is checking your boiler flow temperature. Many boilers in the UK are set too high by default, which can reduce efficiency. For modern condensing boilers, lowering the heating flow temperature to around 60–65°C may help the system run more efficiently while still keeping the home warm.

Heating controls also make a noticeable difference. Using timers or smart controls helps avoid heating an empty house and gives you more control over when energy is being used. Setting schedules for mornings, evenings, or weekends can reduce unnecessary heating without affecting comfort.

It is also worth keeping your heating system working properly. Bleeding radiators, checking for cold spots, insulating hot water pipes, and booking an annual boiler service can all help improve performance. If heat escapes quickly through draughts or poor insulation, even an efficient boiler will need to work harder to keep your home warm.

Is improving boiler efficiency worth it?

For many homes, yes. Learning how to use your boiler efficiently is often one of the simplest ways to reduce heating costs, especially during colder months. Small adjustments to settings, controls, and maintenance can help lower energy use over time without sacrificing comfort.