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One of the most common problems with customers boilers is low boiler pressure. In this article we explore why issues in boiler pressure occur and how to fix a low boiler pressure.
Are you finding that you are having to top up your boiler pressure every day? If so, read on to find out what could be causing this system fault and whether you need to call a heating engineer.
Modern boilers heat cold water which flows around a circuit of pipes and radiators through your heating system in your home. For this to happen the water pressure needs to be kept stable.
When the heating system is cold, the pressure should ideally be between 1 and 1.5 bar. If the pressure is too low i.e. below 0.5 bar then water has been lost from your system which needs replacing. If the pressure is too high this can indicate there is too much water in the system. As a first step you can bleed a radiator until the gauge returns to the normal limits of 1 – 1.5 bar.
If this does not solve the pressure problem or you are still having to top up your boiler frequently then it is important to get to the root of the cause to protect your boiler from damage.
Aside from having too much water within your system, high pressure can indicate your expansion vessel requires re pressurising. In this instance you will require a heating engineer.
If you are ever in doubt with any aspect of your boiler or heating system you should ALWAYS contact a registered heating engineer. It is normal for a heating system to be topped up once or twice a year. For example this could be done during your annual boiler service. If you are having to top up your pressure frequently then you should call an engineer.
A loss in boiler pressure can be caused by a variety of things. Commonly a loss in pressure is caused by a leak in your heating system or if you have recently bled your radiators.
Even a tiny leak can cause a large pressure drop if left unnoticed. Noticed a drop in pressure? Have a look around your home for any damp patches around your radiators or boiler. You should never look for a leak inside your boiler only a qualified gas or oil engineer should do this.
Other signs for an ongoing leak could be;
However, it is not always easy to find a leaking pipe especially if it is behind a wall or panelling.
In summary if you are in any doubt about your boiler pressure you should always contact a registered heating engineer. Failure to do so could result in unnecessary damage to your boiler and heating system which could result in a costly repair. Please also see our article on how to re pressurise your boiler
If you would like an engineer to attend your boiler please call our friendly office staff on 01258 472132 or fill in our enquiry form and one of our team will get back to you.
