Gas Plumber in Sydney: What To Do If You Smell Gas

Do not try to find the source of the leak. A single spark from a light switch or phone screen is enough to ignite gas that has built up in an enclosed space. Before you do anything else, follow these steps in order:

1. Stop: Do not touch any electrical switches, open flames, or appliances
2. Shut off: Turn the main gas valve off at the meter, usually located outside along an external wall. Turn the handle perpendicular to the pipe
3. Ventilate: Open windows and doors on your way out if it is safe to do so
4. Evacuate: Get everyone, including pets, out of the building immediately
5. Call: Once outside, call 000 if the smell is strong or anyone feels unwell. Call Jemena on 131 909 (Sydney and NSW) for gas network emergencies. Call a licensed gas plumber in Sydney for leaks inside your home

Do not re-enter until a licensed professional has confirmed it is safe. Ventilation disperses gas temporarily, but the source remains until it is found and repaired.

What Causes Gas Leaks In Sydney Homes

Gas leaks come from a handful of common sources. Understanding them helps explain why a licensed gas plumber’s inspection covers more than just the obvious leak point.

The most common causes:

• Flexible gas connectors: The braided metal hoses connecting appliances to the gas supply corrode over time, particularly in kitchens and laundries. A connector that looks intact from the outside can be deteriorating internally
• Worn appliance seals or cracked fittings: Ageing hot water systems are particularly susceptible, especially units not serviced in several years. Faulty pilot lights and loose appliance connections are also frequent culprits
• Pipework joint failure: Gas lines running through walls or under floors can develop slow leaks at joints over time, particularly in older properties
• Damaged flues or vents: A blocked or cracked flue can allow gas to accumulate in roof cavities and internal spaces

A faint recurring gas smell that never quite goes away warrants a professional inspection rather than a wait-and-see approach.

When A Licensed Gas Plumber Is Legally Required

In NSW, all gasfitting work must be carried out by a licensed gas fitter under the Gas and Electricity (Consumer Safety) Act 2017. This applies regardless of cost, property type, or job size.

Licensed gasfitting work in NSW includes:

• Installing, altering, or repairing any gas pipe or fitting
• Connecting or disconnecting any gas appliance from the gas supply
• Installing, altering, or repairing any flue associated with a gas appliance
• Leak detection and pressure testing on internal gas installations
• Issuing a Certificate of Compliance after any gas work is completed

A homeowner cannot legally carry out any of this work themselves. Doing so breaches the Home Building Act 1989 and voids insurance coverage on the property. After completing gasfitting work, a licensed gas plumber must provide a Certificate of Compliance within five business days and submit it via the BCNSW eCert portal.

When choosing a gas plumber in the Sutherland Shire or broader Sydney area, ask to see their NSW Fair Trading licence number before work begins. A licensed gas plumber will carry this documentation and provide the compliance certificate as standard.

What A Gas Plumber Checks On Arrival

Once the immediate safety situation is under control and it is safe to re-enter the property, a licensed gas plumber will carry out a structured inspection covering every potential failure point in the gas system.

A thorough gas inspection includes:

• Pressure testing the internal gas line to confirm the location and extent of the leak
• Checking all flexible connectors for corrosion, cracking, or movement
• Inspecting appliance seals, pilots, and burner components for wear or failure
• Testing all accessible joints and fittings with gas leak detection fluid or an electronic detector
• Checking flues and vents for blockage, damage, or incorrect installation
• Assessing the meter connection and regulator for signs of wear

After the inspection, the gas plumber will explain what was found, carry out repairs, and issue the Certificate of Compliance. If an appliance is found to be unsafe, it must be taken out of service before gas is restored to that connection point. A licensed plumber cannot legally reconnect an appliance they have identified as non-compliant, just as they cannot ignore burst pipes or active leaks that present an immediate safety risk.

For commercial properties and strata buildings, the inspection scope is broader. Multiple appliances, shared gas lines, and common area installations all need to be checked. Strata managers should build gas inspections into the building’s scheduled maintenance program.

Preventing Gas Issues Before They Happen

The most reliable way to avoid a gas emergency is regular servicing. Gas appliances and fittings are not set-and-forget infrastructure.

Key prevention steps:

• Inspect flexible connectors every two years and replace proactively rather than waiting for visible failure
• Service hot water systems, heaters, and cooking appliances according to the manufacturer’s schedule
• Install carbon monoxide detectors in any home with gas appliances. Unlike a gas leak, carbon monoxide from incomplete combustion or a blocked flue produces no smell. Physical symptoms such as headaches, nausea, and disorientation are the only warning
• Book a gas safety check every two years as a minimum. Properties with older appliances, open flued heaters, or systems not touched since installation warrant more frequent checks

For Sydney homes across the Inner West and Eastern Suburbs, older housing stock with original gas installations from the 1970s and 1980s is worth reviewing. Fittings from that era were not built to modern tolerances, and slow joint failure becomes more likely with age.

Properties in the Eastern Suburbs with heritage listings or original kitchens often retain gas infrastructure that has never been formally inspected. A licensed gas safety check in these properties is the difference between knowing your system is safe and assuming it is.

Booking an inspection with a local plumber serving the Sutherland Shire and Sydney is the simplest way to confirm your system is up to standard.