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    Boiler not heating

    Heating Engineers

    The u-bend beneath the kitchen sink is leaking. Now I’ve found the boiler isn’t heating. Could the leak in the u-bend have caused my boiler to lose pressure? The boiler is nearby in the kitchen.

    Asked by Lisa on 29th Sep 2021
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    Best Answer

    Pwa Plumbing & Heating Ltd

    "Hi, if it's a waste u-bend then it's not correlated with the boiler. If it's the heating pipe that is leaking then it's possible but I don't think that's the heating pipe."

    Answered on 29th Sep 2021 - Member since Jul 2020 - report
    Premier Response

    "If the condensation pipe is connected to it you may have a problem with the secondary heat exchanger, if it’s got a split in it your heating, water will exit through the condensation pipe and cause pressure loss, also the condenser backing up due to a blockage would cause your boiler to malfunction loosing both heating and hot water."

    Answered on 5th Oct 2021 - Member since Sep 2021 - report

    "No, this sounds like 2 separate problems, please get in touch if you need assistance."

    Answered on 29th Sep 2021 - Member since Apr 2018 - report
    CK Plumbing and Maintenance

    "No, it could be numerous problems why your boiler has lost pressure."

    Answered on 29th Sep 2021 - Member since Jan 2017 - report
    GS Gas & Electric

    "From what you have said, it appears that the U-bend underneath your boiler is called a filling loop. If there is a leak coming from the filling loop itself, this will cause a drop in pressure in your boiler, ultimately leading your boiler to stop operating. However, there may be a leak elsewhere under the boiler which may cause the water to travel down the filling loop. I would recommend calling a gas engineer to inspect. However, it might be a job of replacing the filling loop and topping up the pressure."

    Answered on 29th Sep 2021 - Member since Jul 2021 - report
    Alan Rutherford

    "No to u bend.
    Loss in pressure
    1. Check all radiator tails, if wet on any one tail, that's your problem.
    2. Is there any water or staining on the small copper pipe outside where the boiler is, if so that's your problem.
    3. Check under the boiler if wet."

    Answered on 29th Sep 2021 - Member since Sep 2019 - report
    1st call response

    The leak from the u bend isn’t anything to do with the boiler."

    Answered on 29th Sep 2021 - Member since Oct 2018 - report
    H&H services

    "U-bend under the sink is a waste trap which is not related to the boiler. It's a minor job and the trap needs replacing. Boiler not heating up radiator could be the result of air trapping in the radiator which requires radiators to bleed out or thermostat needs to be reset."

    Answered on 27th Oct 2021 - Member since Apr 2021 - report
    Galect Limited

    "No, highly unlikely. Even if the condensing pipe was emptying in the waste pipe under the sink and the flow was good it would not affect the boiler. The acidity could have cause the leak but not stopped your boiler working unless it was completely blocked then potentially yes it could."

    Answered on 19th Oct 2021 - Member since Oct 2021 - report

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