Hi, I have a very small leak from my combi boiler, and the culprit seems to be this thing. I am calling my heating engineer, but just wondered if someone can tell me what this actually is, and will my chap charge me a fortune to replace it! It looks like the top of an aerosol can. Thanks
Boiler leaking
- Thread starter tonestan
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Its an auto air vent ,and needs replacing. How much is a fortune ?
Just close it, turn the cap down until it is tight and it should stop leaking, only really needed if you drain and re-fill the boiler
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