Fioul heating filters

Do you have oil heating? Did you know that you are required to make a maintenance visit once a year for boilers whose power is between 4 and 400 kilowatts?
It may happen that some pieces of your boiler be used by time, including the oil heating filter that is one of the most stressed parts when operating your heating. In order to keep the energy performance of it, it is essential to regularly change these pieces during annual maintenance visits.
The filter should be cleaned every year and changed if necessary.