Pressure Testing for Leak Detection
Pressure testing is a specialist investigation method used to assess whether water pipework or a central heating system is losing pressure, which may indicate a hidden leak.
At Maystone Leak Detection, our engineers use a specialist air compressor and pressure testing rig incorporating digital and analogue pressure gauges. This allows us to apply a controlled test pressure to suitable isolated pipework and monitor changes over a defined period.
Where pressure loss is identified, our engineers assess the results alongside the system's condition, temperature, test setup and other relevant factors. A sustained pressure drop may indicate leakage, although further investigation is sometimes required to establish the cause.
Pressure testing is particularly useful when investigating concealed pipework, underground water supply pipes and central heating systems that repeatedly lose pressure. The findings can also help determine which additional leak detection methods may be most appropriate.
Technology:
Pressure Testing
Best for: Investigating suspected leaks within suitable water pipework and central heating systems by monitoring pressure loss.
Invasive or Non-invasive: Generally non-destructive where suitable access points are available. The system may need to be isolated, drained or prepared before testing.
Detects: Changes in pressure that may indicate leakage from the section being tested.
Used alone or with another technology? Often used alongside acoustic profiling, tracer gas and other appropriate leak detection methods.
Suitable for: Domestic & commercial properties.
How does pressure testing work?
Pressure testing involves isolating a suitable section of pipework or a central heating system and applying a controlled test pressure using specialist equipment.
At Maystone Leak Detection, our engineers use a pressure testing rig with digital and analogue gauges to monitor the system over an appropriate testing period.
If the pressure falls, this may indicate that air or water is escaping from the system. However, pressure changes can also be influenced by temperature, the testing equipment, connections and other system conditions.
Our engineers assess these factors before interpreting the results. Where a leak is suspected, pressure testing can help determine whether further investigation is required and which additional detection methods are most appropriate.
The test pressure and procedure are selected according to the type, condition and suitability of the system being investigated.
When is pressure testing useful?
Confirming whether a leak is present
Detecting very small leaks
Central heating leak detection
Assessing the size of a leak
Testing hidden pipework
Testing larger pipe systems
Before using other detection technologies
Pinpointing leaks with acoustic profiling
How does Maystone use pressure testing for leak detection?
Our engineers use pressure testing to investigate suspected leaks within suitable water pipework and central heating systems.
After assessing the system and identifying an appropriate testing arrangement, we isolate the relevant section and connect our specialist pressure testing equipment.
Using a controlled test pressure, we monitor digital and analogue gauges for changes that may indicate pressure loss.
If the results suggest leakage, we consider the system's construction, temperature, connections and other relevant factors before determining the next stage of the investigation.
Where appropriate, pressure testing may be combined with acoustic profiling to listen for escaping air, or with tracer gas testing to help narrow down the likely location of a concealed leak.
This approach allows us to investigate pressure loss systematically and help guide targeted repairs while minimising unnecessary disruption.
Benefits and limitations of pressure testing leak detection:
Detects small leaks
Confirms whether a leak is present
Helps assess the size of a leak
Fast and efficient
Useful for central heating systems
Suitable for hidden pipework
Works alongside acoustic detection
Efficient use of resources
Very large leaks can be difficult to pressurise
If an opening is particularly large, air may escape faster than the pipe can be pressurised, making a conventional pressure test more difficult.
It doesn't always locate the leak on its own
Pressure testing is excellent for confirming pressure loss, but additional technology such as acoustic profiling may be required to pinpoint exactly where the leak is located.
When do we use pressure testing?
Pressure testing can be useful when investigating concealed water leaks within pipework and central heating systems, particularly where pressure loss is suspected but the source is not visible.
At Maystone Leak Detection, we may use pressure testing during:
Central Heating Systems Leak Detection
Investigating heating systems that repeatedly lose pressure, including suspected leaks within concealed pipework beneath floors or inside walls.
Water Mains Leak Detection
Testing suitable isolated sections of water supply pipework where a hidden leak is suspected.
Domestic Leak Detection
Investigating suspected leaks within residential water and heating systems.
Commercial Leak Detection
Assessing pressure loss within suitable pipework serving commercial buildings and larger premises.
Why we combine technologies
At Maystone Leak Detection, we understand that every leak is different, which is why we never rely on a single detection method in isolation. While each technology has its own strengths, combining multiple techniques allows our engineers to build a clearer picture of what is happening within your property.
By comparing the results from advanced technologies such as thermal imaging, acoustic listening, moisture mapping, tracer gas testing and other specialist methods, we can accurately confirm the source of a leak before recommending any repairs.
This approach helps us provide a more accurate diagnosis, reduce unnecessary disruption and ensure the right solution is used for your specific situation.
Our leak detection technologies include:
Common Questions about pressure testing for leak detection:
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Pressure testing involves introducing controlled pressure into a pipe or heating system and monitoring it for changes. A drop in pressure can indicate that air is escaping through a leak somewhere within the system.
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Yes. The sensitive digital gauges used by our engineers can detect very small pressure changes, making pressure testing particularly useful when investigating small or difficult-to-find leaks.
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Yes. Pressure testing can be used to determine whether a central heating system is losing pressure because of a leak, even when there is no visible sign of escaping water.
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Pressure testing can confirm that a leak is present and help indicate its severity, but it may not identify the precise location on its own. We can combine it with acoustic profiling and other specialist technologies to accurately pinpoint the source.
Why choose Maystone?
Advanced technology. Experienced engineers. Accurate results.
Finding a hidden leak requires more than specialist equipment. It takes experience, knowledge and the right combination of technologies to accurately identify the source while minimising disruption to your property.
Experienced Leak Detection Engineers
Specialists in locating hidden leaks across domestic and commercial properties.
Advanced Detection Technology
Using thermal imaging, acoustic listening, tracer gas, moisture mapping and more to pinpoint leaks accurately.
Minimal Disruption
Non-invasive detection methods designed to avoid unnecessary damage.
Insurance-Friendly Reports
Clear, detailed reports to support insurance claims where required.
Residential & Commercial Expertise
Trusted by homeowners, landlords, businesses and property managers.
Five-Star Customer Service
Honest advice, clear communication and accurate leak detection trusted by our customers.