It's important to have any oil fired appliance such as a boiler, stove or cooker serviced once a year. The flue will need checking to make sure it's clear, and your OFTEC Registered Technician can also check to see the boiler is running safely and efficiently for you.
You should always check with the manufacturer for service schedules as some boilers may require servicing more often than others.
Failure to service your boiler every year could result in it running less efficiently which means you burn more oil which costs more money! Worst of all it could break down just as the cold weather comes leaving you with a cold house.