We have an ancient Glow-worm back boiler which worked fine until a few days ago.We can now only get one radiator of 7 to warm and the water is only luke warm also. We have bled the system and seem to be getting a silly amount of air out of it, but we have checked the pilot light and the system seems to fire up, so any suggestions would be appreciated.

shelley, November 2005

Chances are the boiler is sooted up.If you havent had it serviced for a while you MUST get this sorted.If you can see underneath whilst the flames are lit,you may see the flames rolling.If this is happening TURN OFF the boiler until you get it serviced.You will be ok to use the fire but the longer you leave it the worse it will become.

Tony S, December 2008