Pressure release valve issue - boiler - Gas Work job in Bristol, Avon

Job description

Issue is that once the heating has been on all pressure is lost when switched off. Seams fine when just using hot water. Water is pushed from a pip outside when the heating is turned on. I am able to increase the presure using the taps and this will hold if we just use hot water.

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Feedback for Edwards Heating

Nick was friendly, helpful and efficient. He diagnosed and fixed our boiler problem promptly, plus gave additional helpful advice. An honest and trustworthy service, which I wouldn't hesitate to use again or recommend to others. Thanks Nick!