Thanks Jon, The plumber is coming out and thinks your suggestion will fix the problem. One further question. The system has been ok since we moved in five years ago. A year agonoticed one of the rads getting hot at the top of the house and susspected a (non existant) 3 way valve. Then recently gets ...
Hi
Can anyone help? The radiators get hot at the top of the house when heating is off and hot water is on.
I do not have a 3 way valve, apparantly a v old system. My pump which was suspected has been replaced
