Boiler Servicing. Ability’s guide to an annual boiler service

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.

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.

boiler servicing-manufacturers instructions
A serviced happy boiler

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.

boiler servicing-manufactures instructions
Three regular serviced boilers

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

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.

In the event of any safety defect(s) being noted, Ability will always advise the customer of the details, and either rectify them or act in accordance with the Gas Industry Unsafe Situations Procedure (GIUSP) Paperwork will be provided.

Where rectification is not possible, we will discuss with you, the customer if any remedial action is required, and give you all the options to correct the faults, the best way possible.

Finally, we will complete the Benchmark service record, and provide any additional work documentation while on-site or via email if you are not able to be present at the time of works.

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