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
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.
