Reduce your combi boiler's flow temperature
Combi boilers run in their more efficient condensing mode when the water they send to radiators is cooler.
What to do
- Find the radiator (flow) temperature control on your boiler.
- Set it to around 60°C.
- Check rooms still warm up in reasonable time.
- Don't change hot water settings on a system with a cylinder without advice.
Useful tools and guides
Related tips
Set heating timers and schedules
Heating an empty home wastes energy. A schedule makes the heating come on when you need it and go off when you don't.
Consider a heat pump
Air source heat pumps are much more efficient than gas boilers at turning energy into heat, but whether one suits you depends on your home.
Turn your thermostat down by 1°C
Lowering the room temperature by a single degree reduces how hard your heating works, and most people barely notice the difference.
Fit thermostatic radiator valves (TRVs)
TRVs let you set each room's temperature separately, so you stop heating rooms nobody is using.
