Gas Appliance Commissioning

What gas appliance commissioning covers

Commissioning brings together testing, set-up and verification so you can use your appliance with confidence. It typically includes:

• Visual inspection of the appliance installation and gas pipework
• Tightness testing to confirm there are no gas leaks
• Working pressure and gas rate checks (where applicable)
• Flue integrity and combustion checks to confirm safe operation
• Ventilation assessment where required
• Functional testing of safety devices and controls
• Setting up the appliance to manufacturer specifications
• User handover, with clear guidance on safe operation
• Completion of relevant commissioning paperwork for your records

When commissioning is most relevant

This service is a good fit if you need proof that a newly fitted or altered appliance is safe, compliant, and properly set up. Common situations include:

• After a new boiler, cooker, hob, fire or other gas appliance installation
• After gas pipework has been extended, rerouted or modified
• For landlords who need clear documentation for compliance records
• For small commercial premises where safe operation and audit trails matter

How the service is delivered

Commissioning is carried out by a Gas Safe registered engineer. The visit normally follows a structured sequence: inspection first, then formal tests, then any adjustments needed to achieve correct readings.

You will be kept informed throughout, including what has been checked, what the results mean, and any actions required before the appliance can be left in service.

What happens after commissioning

You will receive the completed paperwork relevant to the appliance and installation. If any issues are identified, you will be advised on the safest next steps, which may include remedial work before the appliance can be used.

For ongoing reliability, it is also worth planning routine servicing in line with the manufacturer guidance.