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Following on from a post I made a week or so ago about gurgling and air in my gas fired central heating system it was widely acknowledged that I had sludge and gunk in my radiators which needed individually taking off and cleaning out. I've had cleanser in the system before and the water runs...

When the noises started again last night I raced into the loft and found mainly air plus a bit of watering spluttering into the F&E tank via the feed pipe, which I guess suggests that yes it is air in the system and I need to de-sludge each rad once it warms up a bit

Thanks for your comments, very helpful thanks. When draining down and flushing out the radiators would it be best to remove each radiator individually and flush each one out? However is the corrosion and sludge likley to be from the radiators rather than the pipes. A hose would no doubt clean...

To be honest it happens so quickly that I haven't been up into the loft to see what occurs when it all 'kicks off' as its over by the time I've openened the hatch and got the ladder down and got up there. I will however leave the ladder down tonight and rush up there when it starts. How would...

Here goes and I hope this all makes sense...... I have a gas fired boiler which heats the hot water and heats the house via radiators (expansion tank in the loft) and approx once or twice a day generally when the central heating is on pipes in the loft start gurgling very loudly and this then...