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The pressure just drops. No, I don’t think my usual plumber isolated it from the heating.

Thanks! I’ll have to get a plumber to that for me as I’m disabled. I don’t if it would be the Heat Exchanger, wouldn’t that affect the hot water too?

Hi, I need advice, my Valiant combi boiler, which is about 8 years old, pressure keeps falling day by day. I have had the Expansion Vessel replaced and PRV replaced, anti-leak stuff put into the system. Nothing has helped! There’s no signs of water or leaks anywhere. There are no pipes under...