How often should you have your oil boiler serviced?

Have your oil-fired boiler serviced once a year by a certified technician, ideally before the heating season.

Without servicing, the risk of soot and breakdowns goes up, and you use more fuel. Have cleaning, a combustion test and checks carried out, and keep the report.

1. Book an annual appointment before the heating season
2. Make sure the boiler and oil tank are accessible
3. Have cleaning, a combustion test and checks carried out
4. Keep the report/certificate

45 minutes to 1.5 hours.

• appointment with a certified technician

In Flanders, an oil-fired boiler of 20 kW or more must by law be serviced every year by a certified technician.

This rule applies in Flanders. If you live elsewhere, check which rules apply there.

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Work safely and follow the manual. If in doubt, or if it involves gas, combustion or working at height, leave it to a qualified professional.

Source

• Departement Omgeving, Vlaamse overheid — Veelgestelde vragen en antwoorden voor gebruikers van centrale verwarming

Checked on: 2026-09-24

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