Smell Gas at Home? What to Do & When to Call a Gasfitter | Sterling Gas, Hot Water & Leak Detection

What to Do If You Smell Gas at Home: A Sydney Homeowner’s Safety Guide

A whiff of gas near the stove or hot water unit is one of those things every homeowner notices immediately — and for good reason. Gas is generally very safe when appliances and pipework are properly installed and maintained, but a smell is your home’s way of telling you something needs attention. Here’s what usually causes it, what’s safe to check yourself, and when it’s time to bring in a licensed professional.

Why You Might Smell Gas Around the House

Natural gas and LPG are odourless on their own — suppliers add a distinctive smell precisely so leaks are noticeable. A few common, everyday explanations include:

• A pilot light that has blown out, briefly releasing unburned gas
• A gas appliance (stove, heater, or hot water system) that hasn’t been serviced in a while
• A loose fitting or connection at an appliance
• Ageing or damaged pipework, particularly in older Sydney homes
• Work recently done nearby — renovations, gardening, or even a neighbour’s excavation — that may have disturbed a gas line

Sometimes the smell is faint and passes quickly, such as when a heater is switched on for the first time after months of disuse and burns off a bit of dust. Other times it lingers or comes back, which points to something that needs a proper look.

What to Do Immediately If You Smell Gas

If the smell is noticeable and you’re not certain of the cause, treat it as urgent. The general safety steps are the same everywhere:

1. Leave the property (or get everyone outside and away from the area) rather than staying to investigate.
2. Don’t operate light switches, appliances, or anything electrical, and don’t light a match or use a lighter.
3. Don’t use your phone while inside — wait until you’re safely outside and clear of the area to call for help.
4. If you can safely reach the gas meter from outside without re-entering a smoky or gas-filled area, you may choose to turn the supply off there.
5. Once you’re safe, call your gas provider’s emergency line or a licensed gasfitter to report it and arrange an inspection.

This is general guidance rather than a substitute for your gas provider’s own emergency instructions, which can vary slightly depending on where you live — it’s always worth having that emergency number saved for your household.

What You Can Safely Check Yourself

Not every gas smell is an emergency, and there are a few low-risk checks worth doing once you’re confident the smell is mild and not getting stronger:

• Check whether a stovetop knob or appliance dial has been bumped or left slightly on
• See if the smell is isolated to one appliance (like a heater just switched on) rather than spread through the house
• Note whether the smell fades within a minute or two, which is common with a pilot light re-igniting
• If a pilot light has gone out, only relight it if the appliance manufacturer’s instructions clearly show you how — otherwise leave it for a professional

If any of this feels uncertain, or the smell is strong, spreading, or keeps returning, don’t try to troubleshoot further yourself — that’s exactly the situation licensed gasfitters are trained and equipped to handle.

When to Call a Licensed Gasfitter

Gas work in Australia legally has to be carried out by a licensed gasfitter, and for good reason — diagnosing a leak, testing pipework, and confirming an appliance is safe to use again all require the right training and equipment. It’s time to call in a professional if:

• The smell is persistent or strong rather than brief and mild
• It keeps recurring even after you’ve checked the obvious causes
• You’ve had renovation, landscaping, or excavation work done nearby recently
• An appliance is due for a service or has never been checked since installation
• You simply want peace of mind after any gas smell, however minor

At Sterling Gasfitting & Plumbing, we carry out gas leak detection, pressure testing, and compliance checks across Sydney homes, so you get a clear answer about what’s happening and a proper fix — not just a guess. If you’ve smelled gas at home, or an appliance hasn’t been serviced in a while, get in touch with our team and we’ll come out, test it properly, and set your mind at ease.