The answer to this may seem obvious to those in the know but I was wondering how TRV's cut down running costs of a combi boiler central heating system?
I appreciate that they keep the temperature of the rad constant in a given room but how does this help the boiler? does it allow it to pump less water round the system or is it something else?
Also where is the best place to fit a system timer/thermostat?
Many Thanks
I appreciate that they keep the temperature of the rad constant in a given room but how does this help the boiler? does it allow it to pump less water round the system or is it something else?
Also where is the best place to fit a system timer/thermostat?
Many Thanks