I have an Ariston combi boiler - i find the radiator in the dining room heating up fine, but the adjacent bedroom the radiator is stone cold, and all the other radiators in the house - living and bedrooms are very midly warm to cold....is there a problem with the flow of heating ? how can i fix it please?

DR, November 2009

To start with the basics, have you bled the radiator? (let air out?)

If this is a possible, you need a radiator key. Undo the nut with the key (hold a cloth under to catch drips of water.)

John, November 2009