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    Air in central heating

    Hi everyone Just over a week ago, we had some new radiators installed, plumber drained system, installed radiators, added Fernox F1, and refilled the system. A few days prior to the work, I added Fernox F3, which was flushed out when the system was drained. Since the new radiators we’ve been...
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    Vaillant F.23 and F.22 error

    Hello I’m hoping someone can shed some light on an issue we’ve been having with our Valiant standard boiler with gravity fed system, for the last week plus. Started around Monday last week, when we stopped getting hot water downstairs asks boiler sometime displayed F.23. Gas engineer came...
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    Non-breathable membrane under suspended timber floor

    Hello My wife and I currently have a builder insulating a suspended timber floor. The builder has put a membrane down called Protect A1, which I read online is non-breathable. Will this be a problem? There’s still ventilation on the side where the membrane hangs down. Is there anything I can...
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