home Fix label Heating label_important Home Heating Systems

Radiator is only partly warm?

Hello. One of our radiators is warm at the bottom half and cool at the top. Does that mean there is an air gapin it? We have a central heating system. Many thanks

Tony, August 2009

home Fix label Heating label_important Home Heating Systemsdone

cold at the top means air in rad, just bleed it and check pressure afterwards if it's a sealed system.

Ian, August 2009

when your heating is on and you get cool spots in radiator there is dirt on the system or the radiator is the last on the heating circut then the system need to be balance turn off rads near boiler and see if rads heats up better if not it dirt in system

brian dunne, August 2009

Yes you have air in this radiator which will have to be bled out. Undo the square bleed valve at the top (don't take it right out) listen for the air to escape and close it again once all the air has gone. If you have a combi boiler, the system may need repressurising afterwards.

John, August 2009