A gas leak in your home is one of the situations where knowing the warning signs and responding correctly can make a significant difference to the safety of everyone on the property. Natural gas and LPG are both widely used in Australian homes for heating, cooking and hot water, and while modern gas systems are designed with safety in mind, leaks can and do occur. The good news is that they are usually detectable before they become dangerous, provided you know what to look for. This guide covers the key
signs of a gas leak, what to do if you suspect one, and why detection and repair is always a job for a licensed professional.
Why Gas Leaks Are Taken Seriously
Gas leaks pose two primary risks: fire and explosion from the accumulation of flammable gas, and health effects from exposure to gas in enclosed spaces. Natural gas and LPG are both odourless in their natural state, which is why gas suppliers add a chemical called mercaptan to give gas its distinctive sulphur or rotten egg smell. This additive exists specifically so people can detect leaks before concentrations reach dangerous levels.
Most household gas leaks are minor and occur at connection points, flexible hoses or appliance fittings rather than major pipework. Even so, any suspected gas leak should be treated as a genuine safety concern and addressed promptly.
Signs of a Gas Leak in Your Home
Knowing how to detect a gas leak in your home starts with being familiar with the warning signs. Some are immediately obvious, while others develop gradually and can be easier to miss.
- The smell of sulphur or rotten eggs is the most recognisable sign of a gas leak and should always be taken seriously. If you notice this smell, particularly near a gas appliance, gas meter or along a gas pipe run, do not ignore it or assume it will go away on its own.
- A hissing sound near a gas line or appliance can indicate gas escaping under pressure from a fitting, flexible hose or connection point. This is most commonly noticed near cooktops, gas heaters, hot water systems or external gas meters.
- Dead or yellowing plants near a gas line can indicate a leak in an underground or external gas pipe. Gas displaces oxygen in the soil, causing vegetation above or near an affected pipe to deteriorate without an obvious explanation.
- Bubbling in wet areas near a gas pipe — such as puddles or saturated ground near an external gas line — can indicate gas escaping into the surrounding earth.
- Unexplained physical symptoms such as persistent headaches, dizziness, nausea or fatigue when spending time indoors, particularly if symptoms improve after going outside, may indicate exposure to gas in an enclosed space. These symptoms are worth taking seriously even in the absence of a noticeable smell, as gas concentrations can sometimes be below the detectable threshold while still affecting air quality.
- Yellow or orange flames on a gas appliance instead of the expected blue flame can indicate incomplete combustion, which may be related to a supply issue, a faulty appliance or inadequate ventilation rather than a leak specifically — but it warrants professional inspection regardless.
What to Do If You Suspect a Gas Leak
If you notice one or more of the signs above, the following steps reflect current gas safety guidance. The most important thing is to act calmly and promptly.
- Do not use any electrical switches, appliances or devices. This includes lights, fans, phones and garage door openers. Even a small electrical spark can ignite gas in an enclosed space.
- Do not use open flames. Do not light matches, candles or cigarettes.
- Turn off the gas supply at the meter if it is safe and accessible to do so. The main shutoff valve is typically located at the gas meter, which is usually on an external wall. Turning it off stops the flow of gas into the property.
- Open windows and doors where possible to ventilate the space as you leave, without lingering.
- Leave the property immediately. Do not stop to collect belongings. Once outside, move well clear of the building.
- Call emergency services from outside the property.
In Australia, call 000 if you believe there is an immediate risk to safety. You should also contact your gas supplier's emergency line — the number will be on your gas bill or meter — to report the suspected leak.
- Do not re-enter the property until it has been cleared by emergency services or a licensed gas fitter. Even after ventilation, gas can accumulate in pockets within the building.
Once the immediate situation has been assessed and cleared, contact a
licensed gas fitter Bathurst residents rely on to inspect the gas system, identify the source of the leak and carry out the necessary repairs before the gas supply is restored.
Why You Should Never Attempt to Find or Fix a Gas Leak Yourself
How to find a gas leak in your home is a question best answered by a licensed professional, not by the homeowner. Gas work in Australia is strictly regulated, and all detection, repair and maintenance of gas systems must be carried out by a licensed gas fitter. Attempting to locate a leak by testing fittings yourself, applying DIY sealants or interfering with gas connections without the appropriate licence and equipment is unsafe and illegal.
A licensed gas fitter uses specialist leak detection equipment to accurately locate the source of a leak, assess the integrity of the gas system and carry out compliant repairs. If you are unsure whether your appliances or gas system are operating safely, do not attempt to investigate yourself — get in touch with a qualified professional for a full inspection instead.
Not sure whether to call a plumber or a gas fitter for your situation? Our article
Do Plumbers Deal With Gas Lines And Fittings? explains who handles what and when to call each.
Gas Leak Safety: Ongoing Prevention
Gas leak safety is not just about responding to a suspected leak — it also includes taking steps to reduce the likelihood of one occurring. Having gas appliances serviced regularly by a licensed gas fitter, replacing flexible hoses on cooktops and heaters at recommended intervals, and not blocking ventilation near gas appliances are all practical measures that reduce risk over time.
If your home has not had a gas system inspection for a number of years, or if you have older appliances that have not been checked recently, a proactive inspection by a licensed gas fitter Bathurst is a straightforward way to confirm everything is operating safely and compliantly.
What to Do After a Gas Leak Has Been Repaired
Once a licensed gas fitter has located and repaired the source of the leak, the system will be pressure-tested before the gas supply is restored. Do not attempt to turn the gas back on yourself — the gas fitter will restore supply once they have confirmed the repair is sound and the system is safe.
After the repair, it is worth asking the gas fitter whether any other components of the system need attention, particularly if the leak was related to an ageing appliance or hose. A gas leak is a useful prompt to review the overall condition of the gas system rather than simply treating the immediate cause in isolation.
If you have a gas leak in your home and need urgent assistance, a gas leak is always a plumbing emergency — our
emergency plumbers in Bathurst are available 24 hours a day, seven days a week to respond quickly and get the situation assessed.
Talk to a Licensed Gas Fitter in Bathurst
Expert Plumbing and Solar Services Bathurst provides gas fitting, gas leak detection and 24/7 emergency gas services across Bathurst, Blayney, Lithgow, Oberon, Orange and surrounding areas. If you suspect a gas leak in your home, follow the safety steps above and contact a licensed professional promptly. For non-emergency gas inspections, appliance servicing or general gas fitting enquiries,
get in touch with the team today.
