The Heating Hub estimates that you can save another 5-10% if you have a Worcester, Vaillant or Ideal ... For this reason, don't set the flow temperature lower than 65°C without asking an engineer ...

Adjusting your boiler flow temperature can save up to £57 a year on your gas bills - but turning it down too low can be dangerous. If you aren't sure what your boiler flow temperature setting is ...

His clip is specifically about Vaillant products, but the plumber says the same changes can be made to combi-boilers ... set it at about 50 degrees, then run their bath tap and test the temperature.

If you aren't sure what your boiler flow temperature setting is, you are not alone. In short, it is a way of adjusting the temperature of the water leaving your boiler. Many people are unaware ...

Waseem recommends making changes to your domestic hot water temperature and turning off another setting ... Vaillant products, but the plumber says the same changes can be made to combi-boilers ...