Ask an expert

Get free help from our community of tradespeople

Heat only boilers and hot water

Posted by Adam , on
With a heat only boiler is the water in the cylinder heated up when the heating is switched on to heat the radiators ? What i am trying to establish is if the water in the cylinder is heated for "free" as a by product of heating the radiators.
matt fox

matt fox

Hi Adam, the short answer is no. The water isn’t free. It will be heated by the heat only boiler via a diverter valve or mid position valve

What would you like to do now?

Find more questions Create my Job

Homeowner stories

Homeowner stories - Nick

Nick shares his story of finding local tradespeople in his new area.


Get our app for homeowners

  • Send messages and get notifications from tradespeople
  • Add photos to get more accurate quotes
  • View tradespeople’s profiles