Are you wondering what happens when a Gas Safe engineer arrives to service your boiler on an annual basis? Let's break down the procedure and explain the process from start to finish.
7 things that happen during a boiler service
1. Preparation and Initial Assessment
Before the service begins, it's important to schedule an appointment with a qualified Gas Safe registered heating engineer. Make sure there's clear access to the boiler and surrounding areas to facilitate a thorough inspection.
Upon arrival, the heating engineer will conduct an initial assessment, examining the boiler's exterior for visible signs of damage or wear. This preliminary check helps identify any immediate issues that may require attention during the service. The heating engineer will also review the boiler's service history and discuss any concerns or unusual behaviour you've noticed since the last service.
2. Visual Inspection
The visual inspection is a comprehensive examination of both external and internal components. The heating engineer will start with a thorough visual check of your boiler and its controls, looking for any signs of corrosion, leaks, or wear and tear.
Next, they'll remove the boiler's casing to access the internal components. This allows for a more detailed inspection and cleaning. Inside the boiler, they'll inspect key components such as:
- The heat exchanger
- The burner
- The flue
- The combustion chamber
- Electrical connections
- Pipework
The heating engineer will pay particular attention to seals and gaskets, checking they're intact and functioning correctly to prevent gas or water leaks.
3. Testing and Cleaning
Testing procedures form a significant part of the service. The heating engineer will check gas pressures to verify they're within the manufacturer's specifications. A flue test is conducted to confirm that harmful gases are being safely expelled from your home, which is essential for preventing carbon monoxide poisoning.
Cleaning is equally important. The heating engineer will remove any soot or debris from the heat exchanger, burner, and other components. This process improves heat transfer efficiency and reduces the risk of component failure. The condensate trap is cleaned to prevent blockages that could lead to boiler shutdown.
4. Component Checks
Key components receive thorough attention during the service:
- The burner is inspected for proper ignition and flame pattern.
- The heat exchanger is examined for cracks or corrosion.
- Controls, including the thermostat and programmer, are checked to confirm they're functioning accurately.
- Pumps and valves are inspected for smooth operation and any signs of wear.
The heating engineer will verify that the boiler responds correctly to temperature adjustments and timer settings.
5. Safety Checks
Safety is a top priority in boiler servicing. The heating engineer will conduct a thorough carbon monoxide test to check no dangerous gases are escaping from the boiler. This includes examining the flue for proper ventilation and confirming it's free from obstructions.
All safety devices are rigorously tested, including:
- The flame supervision device, which cuts off the gas supply if the flame goes out
- The pressure relief valve, which prevents dangerous pressure build-up
- Electrical connections, verifying they're secure and free from damage
6. Operational Test
Once everything is cleaned and checked, the heating engineer will fire up the boiler to confirm it's operating correctly. They'll look for any unusual noises or behaviour and run the boiler through its full range of functions to verify it's operating efficiently and safely.
7. Final Checks and Documentation
The service concludes with a final safety check and the completion of a comprehensive service report. This report details all work carried out, any issues found, and recommendations for future maintenance or repairs. You should receive a copy of this for your records, which can be vital for maintaining warranty validity.
What if Issues are Found?
If any problems are discovered during the service, the heating engineer will discuss them with you. Minor issues might be fixed on the spot, while more significant problems may require a separate appointment and additional costs.
Our heating engineers in Gillingham, Maidstone, Sittingbourne and Tunbridge Wells are here to help you every step of the way. Get in touch with us by calling us on 075400 53343 and we'll be happy to help.
