Question 1

Which central heating faults do you repair?

Accepted Answer

We repair a wide range of faults including failed pumps, stuck diverter valves, faulty motorised/zone valves, thermostat and programmer failures, sludge-blocked radiators, persistent pressure loss and airlocks. If a part is failing we’ll offer a like-for-like replacement or an upgraded component where appropriate.

Question 2

How do you diagnose a central heating problem?

Accepted Answer

Diagnosis begins with system pressure checks, a visual inspection of the boiler, pump and valves, plus electrical tests on controls and thermostats. We carry out flow and return temperature checks, radiator balance checks and, if needed, magnetic filter inspection to identify sludge-related restrictions.

Question 3

Can you replace the pump or diverter valve on my system?

Accepted Answer

Yes. Our engineers replace circulation pumps, diverter valves and motorised/zone valves using compliant components. Where manufacturers’ parts are required for warranty reasons we advise accordingly and fit authorised replacements whenever possible.

Question 4

Will a repair affect my boiler warranty?

Accepted Answer

A repair using non‑manufacturer parts can sometimes affect warranty terms. As a Vaillant accredited installer we can fit authorised parts for Vaillant boilers; we always advise on warranty implications before proceeding and provide a written record of the work carried out.

Question 5

Do you provide a safety check and documentation after repairs?

Accepted Answer

Yes. Every repair includes functional testing and a safety inspection. Engineers leave a written summary of the work completed and any further recommendations; for gas-related safety concerns the work is performed by Gas Safe registered personnel.

Gas Central Heating Repair