Boiler servicing contracts: Getting a good boiler service Boiler service
A faulty boiler can be extremely dangerous, increasing the risk of carbon monoxide poisoning. It's therefore best to get your boiler serviced every year to make sure it's working properly.
To ensure you're getting a good boiler service it helps to know what to expect, so we've created this video to explain. It's presented by Which? Local recommended boiler servicing company Fuller Heating.
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The boiler in the video is a combination boiler. If you have a conventional or older boiler the service may look different and, as all boilers are different, services will vary. Whoever you choose to do the work, check they're on the Gas Safe Register.
Video: what should be included in a boiler service
Annual boiler service checklist
Try to arrange your service for the summer months, before the traditionally busy autumn season, when people start putting the heating on and there are more breakdowns.
The checklist below shows the key things you should expect to have done during a full boiler service.
A visual check to ensure your boiler still meets current standards
Boiler fired to identify any working faults
Boiler casing removed to check all main boiler components (burner, heat exchanger, main injector, spark/sensor probe).
Checks to ensure flue terminals are unobstructed and internal flue components are sealed properly
Gas valve adjusted to check that burner is combusting efficiently and properly (normally using a flue gas analyser).
Inside casing surfaces cleaned
Boiler parts cleaned if necessary
Gas tightness test conducted to ensure no leaks
Boiler casing put back on - check that properly sealed
You should receive a service report that shows everything the engineer has done to maintain your boiler
Not all boilers are the same
Though the above checklist should stand you in good stead for most boilers, bear in mind that not all boilers are like the one serviced in our video.
For most older conventional systems, for example, the following would apply:
- The pump and expansion vessel would not be contained within a conventional boiler. In most cases they would be near the hot water cylinder.
- Parts such as the heat exchanger, burner and fan would need to be dismantled and checked. This would not normally be necessary for the modern boiler in the video, unless the flue gas analysis suggests that there is a problem.