Annual gas boiler maintenance: a legal requirement

Why is it mandatory?

Since Decree No. 2009-649 of June 9, 2009, the annual maintenance of gas boilers with a power rating between 4 and 400 kW is mandatory in France. This measure aims to prevent carbon monoxide poisoning risks, to optimize the boiler’s energy performance, and to extend its lifespan.

Who is responsible for the maintenance?

For individual boilers, the occupant of the dwelling, whether a tenant or owner, is generally required to arrange the annual maintenance. However, the lease agreement may specify that this responsibility lies with the owner. In the case of collective boilers, maintenance is handled by the building owner or the co-ownership association.

What does the annual maintenance involve?

The annual maintenance of a gas boiler must be performed by a qualified professional. It includes several steps: checking the general condition of the boiler and its components, cleaning the inside to remove residues, fine adjustments to ensure optimal efficiency, and measuring carbon monoxide emissions. The technician also evaluates the appliance’s energy efficiency. Finally, a maintenance certificate is issued, which you should keep for at least two years.

What are the benefits of regular maintenance?

Regular maintenance ensures better safety by reducing the risk of poisoning or breakdown. It also enables energy savings: a well-maintained boiler can consume up to 12% less energy. You also extend the lifespan of your equipment while ensuring legal compliance. In the event of an accident, insurance companies often require up-to-date maintenance records.

When should maintenance be done?

It is recommended to schedule your gas boiler maintenance before winter, ideally between late spring and early autumn. This ensures optimal operation when temperatures drop.

For any service request or advice, our specialists are at your disposal. You can also find on our website a wide range of spare parts for boilers to help maintain your equipment's performance.