Boiler Leak

Central heating leak detection

Is your boiler losing pressure? The leak might be inside your boiler. Even when there is no evidence of physical water, the leak can still be inside the boiler. The leak may be evaporating due to the heat or the heat exchanger may be damaged and leaking.

There is a simple test. Get your plumber to pressurise the heating system and then isolate the boiler for at least 12 hours, preferably 24 hours. (This should only be done by a qualified person) Monitor the pressure gauge during this time. If the gauge is in the boiler, rather than on the pipework, then no pressure loss in this period would indicate that either the leak is on the heating pipes and not the boiler, or that the boiler is leaking but only when it is hot and running. If the gauge does show a pressure loss then this would suggest that the boiler has a leak.

If the gauge is on the heating pipes then the opposite is true: no pressure loss suggests the boiler has a leak.

pressure gauge256

A pressure gauge on the boiler will look like this

So where is the water going? It could be simply evaporating which usually will leave signs inside the boiler when the cover is removed. The water could also be escaping down the condensate pipe which cannot be seen. The Leak Team can test the condensate water to determine if it contains water from a leak, or just from the boiler condensate. Call us on 0330 102 5572 to arrange an appointment. (Only qualified persons should remove the boiler cover)


The Leak Team can pinpoint a leak on your heating system avoiding extensive and costly damage to other parts of your home.

Call us on 0800 4640330 for free advice on your central heating system leak.

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

what next advert