Start with what you have noticed
Repeatedly topping up a heating system may keep it running for a while, but it does not explain where the pressure is going. Accessible radiator fittings, boiler components and hidden pipes can all need consideration. Pressure loss alone does not prove a concealed leak.
Narrow the problem to a circuit
We ask when the pressure falls and what checks have already been completed. Suitable isolation and pressure testing can help establish which pipework deserves further investigation. Thermal patterns, moisture readings or tracer testing may then provide useful evidence. Once the affected plumbing is reached and repaired, appropriate follow-up testing is completed.
Signs that can prompt an investigation
- Boiler pressure repeatedly dropping
- A leak that appears when heating runs
- Damp along a suspected heating route
- Pressure loss with no visible radiator leak
Planning the visit
Tell us about any previous boiler assessment and whether there are separate zones or underfloor heating. No home testing is required; the engineer will advise on the conditions useful for the visit.
What to be aware of
A method that may help
Thermal imaging cameras
Surface temperature patterns help guide an investigation into heating routes and possible moisture. The engineer selects the appropriate combination for the property.
Questions about this service
How do you investigate central heating leak detection?
We ask when the pressure falls and what checks have already been completed. Suitable isolation and pressure testing can help establish which pipework deserves further investigation. Thermal patterns, moisture readings or tracer testing may then provide useful evidence. Once the affected plumbing is reached and repaired, appropriate follow-up testing is completed.
What should I prepare?
Tell us about any previous boiler assessment and whether there are separate zones or underfloor heating. No home testing is required; the engineer will advise on the conditions useful for the visit.
What does the £1,350 price include?
For an agreed residential job, £1,350 covers investigation, specialist detection, tracing, necessary access or excavation, the plumbing repair, parts, materials, post-repair testing and a Trace & Access report. The plumbing repair has a 12-month workmanship warranty. The total includes any applicable tax. Decorative and remedial reinstatement is excluded.
Do I need to identify the leak before enquiring?
No. Describe the actual symptoms, the full postcode and any earlier findings. The investigation establishes which system and methods are relevant; you do not need to open floors or choose detection equipment.
Where can I arrange this service?
Explore the listed towns and districts across Berkshire, Surrey, London and surrounding counties. The full address, property use and practical access are checked before an appointment is agreed.
Related services
- Underfloor heating leak detection — Targeted investigation for leaking water-based floor heating circuits.
- Hidden leak detection — Investigate water escaping behind walls, below floors and within voids.
- Leak detection & plumbing repair — From tracing the source to repairing the pipe, in one residential package.
Practical articles about this problem
Find leak detection and repair in your area
Explore the local advice, listed towns and appointment information for your region. We confirm attendance by full address.