Quick wins that cost nothing
- Lower the boiler flow temperature — condensing boilers work best at lower temperatures
- Set the timer to match when you're actually at home
- Bleed radiators that are cold at the top
- Keep furniture and curtains off radiators
Small upgrades worth considering
- A room thermostat and thermostatic radiator valves
- Smart controls so you can adjust heating from your phone
- A magnetic system filter to keep sludge out of the boiler
When a new boiler makes sense
If your boiler is over ten years old, non-condensing, or needing repeated repairs, an A-rated replacement can cut fuel use noticeably. Our repair-or-replace check helps you weigh it up.