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When must a heating oil boiler be inspected in Belgium
When must a heating oil boiler be inspected in Belgium?
In Belgium, a heating oil boiler must undergo mandatory periodic inspection and maintenance. The rules are stricter than for natural gas boilers, as heating oil can cause more pollution and poses a higher risk in the event of poor combustion.
How often must a heating oil boiler be inspected?
An annual maintenance obligation applies to heating oil boilers throughout Belgium.
This means that your boiler:
- Must be cleaned every year
- Must be checked every year
- Must undergo a combustion check every year
This applies in Flanders, Brussels, and Wallonia.
What happens during the inspection of a heating oil boiler?
A certified technician performs tasks including:
- Cleaning of the burner and heat exchanger
- Inspection of the chimney and flue gas discharge
- Measurement of the soot number
- Checking CO and flue gas values
- Adjustment of the burner
Afterwards, you will receive an official cleaning and combustion certificate. You must retain this document.
Who is responsible for the maintenance?
Responsibility depends on the situation:
- In a rental property, the tenant is usually responsible for the annual maintenance.
- In an owner-occupied house or apartment, the owner is responsible.
- In the case of a communal heating installation in an apartment building, the Owners Association is responsible, via the Property Manager.
What if you do not have your heating oil boiler inspected?
Failure to carry out the mandatory maintenance can have consequences:
- Fines during inspections
- Insurance issues in the event of fire or a CO incident
- Higher fuel consumption
- Increased risk of soot formation or chimney fire
- Danger of carbon monoxide
Furthermore, a poorly maintained heating oil boiler may break down more quickly.
What is the conclusion?
In Belgium, a heating oil boiler must undergo a mandatory annual inspection and maintenance by a certified technician. This is stricter than for natural gas, where a biennial obligation usually applies. Annual maintenance is essential for safety, efficiency, and legal compliance.
One maintenance service per year keeps you worry-free and warm through the winter.
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