Pressure Release Valve Leaking

Central heating leak detection


One of the most common causes of a pressure loss or leak on a boiler is the pressure release valve. The pressure release valve is a safety device to ensure a heating system cannot allow pressure to build to unsafe levels.

A simple check is to ask your plumber to temporarily attach a balloon to the pressure release pipe on the outside of the property. If the balloon fills with water, even a very small amount, then ask them to check the pressure release valve and replace it if can’t be repaired. We recommend that all investigations are carried out by a competent person.



Once you have ruled out any problems with the pressure release valve, monitor the pressure on the central heating system to see if it is still dropping. If it is you may have a leak on either the boiler or the central heating system. See here for how to rule out a leak on your boiler: Central Heating Leak Detection Boiler Leak  The Leak Team can pinpoint a leak on your heating system avoiding extensive and costly damage to other parts of your home.

The Leak Team can find that leak. Call for a chat 0330 102 5572 we will give you all the free advice we can.

As well as causing damage at the point of the leak, an undiscovered leak can also lead to long term damage to your heating system as it’s rust inhibitor will be diluted each time you top up the pressure. Rust particles in the system can damage the boiler and rusted radiators and pipes will eventually need replacing.

Locating the point of the leak will mean no more topping up and will keep your rust inhibitor in the system.

We use Thermal imaging initially to locate the route of your hidden central heating pipes. We can then use our other equipment such as our Ground Source microphone, Gas Trace detector and Moisture meter, along with the Thermal imaging camera to locate the exact source of the leak.

Did you know most household insurance policies offer cover for leak detection under “Trace and Access”? Please check your policy for details. We have many year experiences of working with insurance companies and can provide full photographic reports for insurers or loss adjusters if required.

The Leak Team use the latest methods and equipment to offer a full Trace and Access service. This means that we both locate the source of the leak, and where appropriate, expose the pipework to allow a repair to be undertaken.

We do not necessarily carry out the repair ourselves, but can discuss the next course of action with your plumber.

Our methods include:
Thermal Imaging Camera 
Sound Detection
Gas Detection
Pressure Testing
Endoscope Camera
Moisture Meters
Pipe Detector

Water Analysis using Salt & pH Kit

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