Bleeding radiators?

[flobadob]

I've noticed in our house that some of the radiators are hotter than others, for example the two in the kitchen only get a little warm whereas others get quite hot. I've tried bleeding them and took out a little water from each but it made no difference to the temperature that they reach. I'm just wondering is there a proper procedure which should be followed that may rectify the problem?

[wonkon-wonk]

reported!

[buildersmate]

Reported for what? - the obsession ABers have for believing that bleeding radiators cures all heating problems?
Bleeding radiators is only useful if the top of a rad is cooler than the bottom. i.e. the top is full of air.

You are going to need to balance the radiators. Instructions here.
http://www.diyfixit.co.uk/diy/centralheating/b alancing/balancing.html

[JonnyBoy12]

We don't want foul language like that on here; this is a family website!

[Prudentia]

make sure you switch the pump off otherwise you'll fill the system with air

[Disco Fever]

Also make sure the header tank is full of water before you bleed the air out, that's if you have one of course....

[terambulan]

My rads have a valve tap at bottom that is opened to allow stronger water flow. Feel the feeder pipe to the radiator, if that is hotter than the rad then open the a/m tap. If the feeder pipe is cold then you have pump problems (tap the pump to unstick it).

CH Plumbing course over! Award yourself a diploma after above exercises.

[gucciman]

when you say a couple of the radiators are not as hot as the others, are the ones that are only warm the same temperature at the bottom of the radiator as at the top?

do you have thermostatic radiator valves fitted?

are the ones that arent warm enough upstairs or downstairs?