Heating System Leak Repair

What heating system leak repair covers

Heating leaks can come from visible components or hidden pipework. The aim is to locate the source, carry out a lasting repair, then recommission the system so it heats properly.

• Diagnosis of pressure loss and visible leaks on the heating circuit
• Repairs to pipework joints, damaged sections of pipe, and accessible fittings
• Replacement of common leaking parts such as radiator valves, bleed valves and connectors
• Checks of pumps, zone valves and other distribution-side components for signs of leakage
• Draining down and refilling the system where required
• Re-pressurising, bleeding radiators, and confirming stable operating pressure
• Final leak checks and functional checks of heating circulation

When this service is most relevant

Book a heating leak repair if you notice any of the following:

• Boiler pressure keeps dropping and needs topping up
• Damp patches, staining, or puddling near radiators or pipe runs
• Green or white staining around fittings, valves, or joints
• Noisy radiators or gurgling alongside pressure issues
• Boiler lockouts linked to low pressure
• Hot spots or poor circulation caused by air entering the system

How the repair is carried out

The visit typically starts with a few targeted checks to narrow down the cause, followed by the most suitable repair option.

• Visual inspection of radiators, valves, accessible pipework and connections
• Pressure checks and observation to confirm the type and rate of loss
• Isolating and making safe the affected section, then repairing or replacing components
• Refilling, bleeding, and testing the system under normal operating conditions

If the leak appears to be under floors or within boxed-in pipework, you will be advised on access options before any intrusive work begins.

After the repair: keeping the system stable

Once the leak is resolved, you should have a system that holds pressure and heats consistently.

• You will be shown what to monitor (pressure gauge behaviour and any return of damp)
• If the system has been drained, you may be advised on inhibitor levels to help reduce internal corrosion
• If there are signs of wider issues, you will be told what the next practical step is, without unnecessary work