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I have about 13 radiators. I have noticed a lot of steam sometimes coming from its over pressure valve?! I think that is what u call it. When the pressure drops to 0 I have been topping the pressure up to 1.2 bar but when the healing comes on the pressure shoots up to over 3 bar.

it is a worchester combi boiler i think about 10 yrs old i top the pressure up to 1.2. It maybe rises by 0.2 when it comes on? it doesnt go up by much! unforunately i dont know what an remote expansion vessel is?!

Hi wondering if anyone can give me some advice. Every now and again the pressure in my combi boiler drops and I have to keep topping it up to build the pressure up again. I do live in a fairly big house. A friend of mine who is a plumber told me that this can be quite normal and just to keep...