How do I re-pressurise the boiler?

If you have no heat or hot water, the most common reason is that the pressure has dropped on the boiler.  For a  central heating system to work properly the water pressure should remain constant. Modern combination boilers are pressurised systems and water will enter the system from the mains cold water supply through a manual filling device, known as a ‘filling loop’. Adding water via the filling loop to the system after a drop of pressure will help bring your system to the correct pressure again and the pressure gauge will then increase.  This should be at 1.5 bar.  Refer to the operating instruction leaflet for the make and model of the boiler for instructions of how to do this.  If you do not have an instruction booklet, these can often be downloaded from the internet.


  • Terry M
    Terry M

    5 out of 5 stars

    posted 1 month ago

    I've rented through Stuart's for 5 1/2 years and Colin and the team have always been friendly and helpful. Any maintenance required was dealt with quickly and efficiently and I was always kept informed if anyone needed access when I was away from the flat.

    I have recently left the flat which has been my home for the past 5 1/2 years and the leaving process was hassle free and simple and my deposit returned without delay.

    Thanks to everyone at Stuarts for making my rental a pleasant and enjoyable one.

    Carmel Waugh
    Carmel Waugh

    5 out of 5 stars

    posted 3 weeks ago

    We have rented through Stuarts Property Services for over 7 years and can’t fault the service. Repairs and enquiries are dealt with very swiftly and hassle free. Communication is excellent with particular thanks to Margaret who is very professional and responds to enquiries in a timely manner. Thanks again Margaret.

    Would highly recommend, not one issue in 7 years which speaks for itself.

    Katie Davies
    Katie Davies

    5 out of 5 stars

    posted 1 month ago

    Stuarts property services are an excellent company. Their customer service delivery is exceptional. All of the staff are friendly and professional and are clearly passionate in what they do. I cannot rate this organisation highly enough!!