Gas Leak Smell in My Perth Home: What to Do Right Now

If you smell gas inside your Perth home, stop what you're doing and act immediately — this is not a situation to investigate yourself. A gas leak can ignite from a single spark, including from a light switch or phone, and in an enclosed space that risk builds fast.

The moment you detect that rotten egg smell, your priority is to get everyone out of the building, leave doors open as you go to let gas escape, and call your gas network operator (ATCO Gas in Perth) from outside or a neighbour's phone. Do not re-enter until a licensed gas fitter has cleared the property.

Why You Can Smell Gas But Can't Find the Source

Gas suppliers add a chemical called mercaptan specifically so leaks are detectable by smell — even a small leak in a concealed pipe joint or appliance connection will produce that distinct odour. The problem is that gas travels. It follows wall cavities, roof spaces, and subfloor voids, which means the smell can appear in a room completely unrelated to where the leak actually is.

In Perth homes built before the 1990s — particularly in suburbs like Fremantle, Victoria Park, and Inglewood — older steel gas pipework is still common. That pipework corrodes from the inside out over decades. You may have no visible signs of damage on the outside of a pipe while there's a hairline fracture that's been leaking slowly for months.

That's exactly why gas leak detection requires licensed equipment and training. A gas fitter will use a combustible gas detector to trace the leak to its source, test every fitting and appliance connection, and isolate the faulty section before any repair begins.

What You Should Never Do If You Smell Gas

This list matters because common instincts can make a gas situation significantly worse:

• Do not turn any light switches on or off
• Do not use your mobile phone inside the building
• Do not use the stove, oven, or any gas appliance to "test" if it's working
• Do not open the gas meter valve yourself to check pressure
• Do not assume the smell will go away on its own or that a small leak is safe to ignore
• Do not use an open flame to look for the leak source

A gas leak doesn't need a large ignition source. Static electricity from clothing or a doorbell can be enough in a highly concentrated space. Perth Fire and Emergency Services respond to gas incidents regularly, and in most cases the situations that escalate are ones where people delayed evacuation or tried to find the fault themselves.

Appliances That Commonly Cause Gas Leaks in Perth Homes

The leak isn't always in the pipe itself. In Perth homes, the most common sources gas fitters find are:

• **Flexible gas connectors on cooktops and ovens** — these corrugated stainless connectors degrade over time, especially in kitchens with high heat and grease exposure
• **Hot water system connections** — gas storage and continuous flow systems have multiple connection points that can loosen or corrode, particularly after Perth's dry summer heat stress cycles
• **Bayonet fittings on old gas heaters** — if you've got a wall heater in a living area that hasn't been serviced in years, the bayonet connection is worth having inspected
• **Meter box connections** — corrosion at the meter itself, especially in coastal Perth suburbs where salt air accelerates rust

If your appliances are more than 10 years old and have never been inspected by a licensed gas fitter, that's a gap worth closing regardless of whether you currently smell anything.

After the Leak Is Fixed: What Comes Next

Once a gas fitter repairs or replaces the faulty section, they're required under Western Australian gas fitting regulations to pressure test the system before it's returned to service. You should receive documentation of the repair and the test result. If a business or tradesperson carries out gas work and doesn't mention testing or paperwork, ask for it — it's not optional under WA licensing requirements.

If your gas system is older or the leak came from a concealed pipe, your gas fitter may also recommend a broader inspection to identify any other sections at risk. That's worth taking seriously rather than waiting for the next incident.

Call Affinity Plumbing & Gas on 1300 779 171 for fast Perth response.