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There is a loud bang coming from the attic when the heating is turned on. It does not make a noise every time it is turned on. Perhaps once a week or so. It did it again yesterday, so this time I went up in the loft. It’s definitely the heating overflow tank but I don’t think it’s the valve. By the time I got the ladder it has virtually stopped, but when I looked in the tank air was bubbling up (quite violently) from the bottom of the tank. Turning the heating off makes it stop. When it does do it, it seems like a lot of air. Seems like more than could be in the system ? This morning the heating came on OK, with no noise, but the last radiator in the system (top floor shower room) had a loads of air in it.
Couple of things to note.
I don’t get any noise from the radiators just the loft tank.
It been over a week between occurrences even though the heating has been on every day.
My heating system is pumped (not gravity fed) due to the way the replacement boiler was connected up (before I bought the house).
Please help!
Couple of things to note.
I don’t get any noise from the radiators just the loft tank.
It been over a week between occurrences even though the heating has been on every day.
My heating system is pumped (not gravity fed) due to the way the replacement boiler was connected up (before I bought the house).
Please help!
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