Gurgling boiler

30 Mar 2013
Reaction score
United Kingdom
Well my boiler was making rumbling noises so had Alcho out & they fitted a new pump & said it also needed new valve, after this was done the tank in loft, airing cupboard & boiler starting making even more horrendous noises. They came back out & diagnosed a blockage, he put cleaner through, bleed all the radiators & all seemed fine then a day later loud gurgling was heard above the boiler like water running down the wall almost & then I noticed 2 radiators not working properly & gurgling when heating kicked in, so bled them of alot of air & they filled fine, warm, toasty, no gurgling but as heating shut down the gurgling/running water noise above boiler was back & radiators full of air again & need bleeding every day. Where is all the air coming from?! Starting to really get on my nerves now as it been going on for weeks. Thanks in advance for any answers

I'm a born worrier & my main concern is that the air will build up so much the radiator or tank will explode leak boiling water near my children
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Sounds like you will have to get them back to clear the blockage properly. Reading your description it could be the cold feed that is blocked leading to air being drawn in through the vent pipe. If you know where to look you could try holding a magnet on the pipe to see if it is drawn to the pipe because the sediment build up is magnetic.
I will definitely be getting them back out but with it being Easter that's gonna be Tues at earliest.
Is it dangerous? Can it cause anything serious to happen?

As for checking it, I'm afraid to admit that I wouldn't have a scooby doo what I'm looking at or for lol

Thanks so much for replying
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It is certainly no good for the system,You could try posting a picture of inside your airing cupboard and we may be able to point you in the right direction with the magnet test.

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