What’s best practice for gas boiler servicing? Here, Ability Plumbing Heating and Electrical Engineers outline agreed industry best practice.

The first thing we recommend is to have the manufacturer’s instructions for the boiler to hand, regardless of experience, these are always important.

Man engineer and gas heater. Repair and work scene.

Does Your Boiler Need a Service?

Please do operate the boiler briefly to ensure it appears to work correctly. We recommend you isolate the boiler/heating system electrically and confirm this with suitable test equipment. When servicing the boiler we always check the fuse rating for the boiler/heating system is correct; most digital appliances will run on a 3amp fuse.

We will remove the boiler case and visually inspect the appliance, internally and externally, for any signs of distress, such as corrosion or water leaks, checking all components.

If necessary, Ability will clean the boiler and its components, including the primary heat exchanger, main burner, and the condensate trap, always referring to the manufacturer’s instructions for boiler servicing.

It’s most essential to reinstate the electrical supply safely. Then to carry out a check of the boiler’s gas burner pressure, a gas-rate inspection (taken at the gas meter), or both, where possible, will determine the correct working pressures.

Next, our engineer will visually check the flame picture (where visible) and carry out a flue gas analysis test, this if the boiler is a high-efficiency product or requires this procedure.

It is critical to ensure any combustion analysis test points are correctly replaced, and any boiler case seals are forming an effective seal. Boilers must not run with incorrect seal.

An excellent visual check that any ventilation requirements for the boiler have been met. Sometimes may include taking measurements.

Boiler Servicing

Boiler Servicing

If the appliance is an open flue ability will check the boiler chimney/flue throughout its length, including its point of termination. Carry out flue-flow and spillage tests; this is usually a smoke test.

It’s essential to check that any boiler safety devices operate correctly. Check there is no escape of gas from the boiler or connecting pipework to the boiler.