Gas isolated during an Octopus smart-meter visit: what next?

If an engineer has turned off a gas appliance or isolated your supply, follow their safety instructions and do not turn it back on yourself. Gas Safe Register says an unsafe installation must be repaired and made safe before it is used again. Your next step is to understand exactly what was isolated, keep the written findings and arrange the professional follow-up the engineer recommends.

Smell gas or suspect a gas emergency? In Great Britain, call the National Gas Emergency Service immediately on 0800 111 999. This is free and available around the clock. Do not wait for an Octopus email reply or the next appointment. Follow the emergency service's instructions. National Gas says not to smoke, light matches or turn electrical switches on or off.

If a carbon monoxide alarm sounds or you suspect a carbon monoxide leak, National Gas advises leaving the property immediately, calling the gas emergency number and not returning until the emergency services advise it is safe. Seek immediate medical help if you suspect exposure; fresh air alone does not treat it.

Why can a meter appointment uncover a safety problem?

An Octopus smart-meter visit includes safety checks inside the home before and after the work. In its 1 October 2026 gas-meter explainer, Octopus describes how a problem found during those checks can lead to an affected appliance being isolated, or the wider installation being capped if the problem cannot be isolated.

That does not tell you which fault exists at your property or when it began. Ask the engineer what they found rather than assuming the smart meter caused it. A safety isolation is also a different issue from an app that has not received readings. Octopus's installation guidance describes a separate connection process for smart-meter data. Waiting for that data process is not a substitute for following an isolation notice.

What changed in October 2026?

IGEM published its updated tightness-testing standard, IGEM/UP/1B Edition 4, in March 2026, with a transition period ending on 30 September. From 1 October, the updated procedures became effective in all circumstances within the standard's scope and the previous edition was withdrawn. Tightness testing is a professional check of gas installation safety, not a check of how accurately an app displays your usage.

There is not one pressure-drop number that a householder can use to decide whether every installation passes. IGEM's own FAQ says the assessment depends on the installation volume and fuel gas, and treats installation pipework separately from appliances. Gas Safe Register's industry update also explains those distinctions.

Leave the test and interpretation to the qualified engineer. This guide does not provide a test procedure, thresholds or instructions for restoring the supply.

What should you ask before the engineer leaves?

Use this as a handover checklist, not a way to challenge a safety decision remotely:

• What has been isolated? Ask whether the restriction affects one appliance, a section of the installation or the whole gas supply.
• What was found? Ask for the plain-English explanation and a copy of any warning notice or written findings. Gas Safe Register says a gas warning notice records the details of the unsafe situation.
• What must stay off? Ask the engineer to explain the restrictions in the notice. Do not assume another appliance is safe simply because its controls still respond.
• Who needs to do the next job? Ask whether the next contact is Octopus, the gas network or a suitably qualified Gas Safe registered engineer. Get the appointment or job reference and contact details.
• What happens after the fault is dealt with? Ask who will confirm that it is safe to use the installation again and whether Octopus needs to return to finish the meter appointment.

Keep the notice and appointment details together. A written record is more useful than trying to reconstruct the conversation later.

Who arranges and pays for the repair?

Octopus's gas-meter explainer describes private Gas Safe engineer follow-up for an appliance or installation problem it cannot resolve during the visit. That is not enough to determine liability or the cost in every case.

Ask Octopus which part of the problem is within the meter job, and ask the proposed repairer for the scope and price before agreeing non-emergency work. Do not assume a repair is included in the meter appointment or that a particular person must pay solely because an isolation happened during that appointment.

If you rent, tell your landlord or managing agent promptly and send them the engineer's findings. National Gas's rented-property advice directs tenants to their landlord about gas safety checks. Ask who is arranging the professional follow-up; do not attempt a repair while waiting for a reply.

What if you have no heating or hot water?

Tell Octopus about the loss of heating, hot water or cooking facilities, particularly if anyone in the household needs extra support. Octopus asks customers to disclose vulnerability or disabilities so its engineers can plan support. Ask what help is available for your situation rather than relying on a general promise of same-day repair or reconnection.

Do not bypass a cap, interfere with a meter or restart an appliance that has been labelled unsafe. Gas Safe Register says an appliance labelled ‘Danger Do Not Use’ must not be used until it has been checked and made safe by a qualified Gas Safe registered engineer.

Once the safety issue is resolved, keep meter readings and billing questions separate. Our smart-meter switching guide explains the account and readings handover; it cannot confirm that an isolated gas installation is safe.