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Mend Pressure Loss Oil Boiler

Pressure loss on oil boiler?

We have a grant oil boiler and we are losing pressure - more than 1/2 a bar a week. We top it up and down it goes. We are told we must have a leak but surely we should have noticed a damp patch at least on a ceiling. We have 4 pressure release valves on the system which have only just been replaced. Any ideas? I hate the idea of water leaking in the house

Ali Swanston
October 2008
it could be the auto bleed valve on the boiler

george
July 2009
We have a similar issue with an oil combi boiler. There is a pressure gauge in the boiler which can be adjusted to somewhere around 2 bar. You should have a presure gauge somewhere which can be adjusted.

If anyone can advise on why I'm losing pressure from 2 bar to 0.5 bar within hours. I've looked for leaks but everything seems ok.

Any help appreciate.

Scott Cummings
October 2008

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