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.
Reserve control and inspection points within the bespoke design.
Decide this before construction
Approve material combinations and the sample detail before production. Complete work affecting dimensions before ordering final bespoke components.
Allow for later maintenance
Keep finishing products and care instructions for each surface. Record how panels or fittings can be reached without damaging adjoining bespoke work.
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.

