Auditing of recent gas installations

By law, gas contractors must issue an electronic Certificate of Compliance (eCoC) within 30 days when they install gas pipes, appliances, flueing and ventilation or convert a gas appliance from one gas to another. The eCoC confirms that their work meets the relevant standards set by the Gas Act.

If you did not receive an eCoC, your contractor should be able to email or post a copy.

The Office of the Technical Regulator (OTR) reviews eCoCs and invites the owners of new gas installations to have a free safety audit (by SMS). This is random, proactive auditing, offered free of charge.

The SMS includes a G-reference number.

Accepting a free audit

You can accept the offer if you have received an SMS from the OTR to audit your gas installation.

Other ways to accept an audit

Coronavirus disease (COVID-19)

OTR inspectors abide by COVID-19 work guidelines through regular health checks and wellness reporting,  regular hand washing and social distancing.

When the auditor contacts the owner to arrange an appointment, they will ask some basic health questions. This is to make sure all occupants of the household are well, free from COVID-19 and are not under quarantine.


Government employees carry out the audits. They are qualified tradespeople with unrestricted gas worker qualifications and many years of experience.

Audits usually take about 20-30 minutes for an average home but will depend on the number and complexity of appliances. Complex commercial and industrial installations can take longer.

Auditors will:

  • produce government ID on arrival
  • visually inspect the gas installation
  • measure gas pressures from the gas meter or LP Gas cylinders while the appliances are operating
  • inspect newly installed appliances and work identified in the eCoC
  • measure operating pressures and other parameters to verify that pipe sizing is adequate and that appliances have been commissioned properly
  • record their findings in a report, which will be emailed to the homeowner and contractor.

Auditors do not adjust or modify equipment or settings. They do however need to undo test point screws to measure gas pressure but leave them as they found them.

They usually take pictures of appliances, pipework, flueing and ventilation openings as necessary - please note that this is normal.


Auditors will note any issues in their report and discuss the next steps with the homeowner.

Auditors will also offer to contact the contractor on the owner’s behalf to invite them back to rectify the work. The contractor should provide the OTR with:

  • photographs of the rectified work
  • a compliance statement
  • a new eCoC for significant rectification work.

The OTR reserves the right to perform a verification audit.

Dangerous installations

The OTR auditor is obliged to make any dangerous (including potentially dangerous) installations safe to protect the community. This may involve isolating a dangerous appliance, or alternatively the entire gas installation where a gas leak exists.

The auditor will discuss the issues with the homeowner and advise on the steps needed to fix a dangerous installation.

Problems with appliances

First, contact the contractor and describe the problem. For example, the gas cooktop burner goes out when I turn it down to the simmer (low) setting or I smell gas near my newly installed appliance. The contractor can return and investigate it, or they might advise you to contact the appliance manufacturer for a warranty claim.

Note: if the appliance is not installed or commissioned correctly, the service agent may charge a call-out fee. The OTR recommends that you ask them for a detailed report to help with further investigations.

Contact Consumer and Business Services if the contractor will not return to resolve the issue.

Page last updated 11 June 2021

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Department for Energy and Mining
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