What this work involves
Work on gas combustion installations requires a company with the required CO-vrij certification. Confirm the appropriate contractor beforehand.
- Existing installation
- Appliance, emitters and controls
- Maintenance and handover records
Use the following design considerations when coordinating this service with a wider project. Agree which parts apply to your request.
Plan service routes to minimise unnecessary damage to retained elements.
Decide this before construction
Start with a survey and trial repair, reviewing the result before treating the whole surface. Protect retained elements while removing adjoining material.
Allow for later maintenance
Keep product information and photographs of the assessed substrate. They support later inspection without reconstructing the original repair decision.
Cost factors for this service
Costs depend on appliance choice, pipework, flue provisions and commissioning. Ask for the scope and selected specification to be described separately.
Bring this to the discussion
Photographs of the existing situation, available drawings and your requirements for boilers & heating maintenance. Identify the elements that should remain.
Questions about the work
What should I discuss before arranging boilers & heating maintenance?
Discuss comfort issues and future plans together. This site does not claim in-house CO certification; the certified contractor must be identified.
Official background: Dutch Government (Dutch).
The design situations here illustrate choices; they are not completed projects or a diagnosis of your property.

