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my combi boiler works fine at heating my water and filling radiators but every couple of weeks the pressure gauge goes down to 0 and i have to fill it up again. I can’t find leaks on the radiators ( also i live in an upstairs flat so i would have the women downstairs knocking if i did). I must admit i haven’t had the thing serviced for some time. also how much roughly does it cost to service a combi boiler?
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Posted in Discussion
The water has to be escaping somewhere.
Have you checked the over pressure outlet pipe?
Sometimes if the pressure valve is made to work, it doesn’t quite seal again…
Have you seen the little pipe that goes outside, is it leaking slightly, if so then the pressure relief valve needs replacing.
You may well have a leak, over a couple of weeks may well not be noticeable.
Sometimes the pressure vessel needs recharging.
You should get your boiler serviced once a year. Have a look on Corgi’s website for an engineer near you
Aye. Sounds like that wee pipe that goes outside has a small leak on it – that’s the most likely, but you only need a very small leak of water to loose pressure and the leak could be evaporating on a hot pipe