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August 17, 2026If you’re planning a new gas point for a heater or a BBQ, chances are you’ve come across the term gas bayonet fitting installation and want to know what’s actually involved.
It’s a common addition for Melbourne homes, but it’s not a job you can do yourself. Here’s what to expect before you book a licensed gas fitting service:
What Is a Gas Bayonet Fitting and How Does It Work?
Image source: Toolstation
A gas bayonet fitting is a twist-lock connector that lets you plug an appliance into your gas supply without needing any tools.
It’s made up of two parts: a socket, which is fixed permanently to the wall or floor, and a plug, which attaches to the hose running from your appliance.
When you push the plug into the socket and give it a twist, the valve opens and gas starts flowing. Pull it out again and the valve shuts automatically, so there’s no gas left running once the appliance is disconnected.
Bayonet fittings work with both natural gas and LPG, but it’s worth knowing that the hose and the fitting itself need to be rated for whichever gas type you’re running. They’re most commonly used for portable gas heaters, BBQs, and occasionally portable cooktops.
The appeal is really about convenience. Rather than having a fixed, hardwired connection to one appliance, a bayonet point lets you swap appliances in and out as your needs change, whether that’s moving a heater into the coldest room of the house or rolling the BBQ out for a weekend gathering.
Where Are Gas Bayonet Points Commonly Installed?
Where a bayonet point ends up in your home usually comes down to whether you’re heating a room or firing up the BBQ.
Indoors, for Heating
Indoor bayonet points are typically installed near skirting boards in living areas, which makes it easy to move a portable gas heater from room to room over winter.
This is especially common in older Melbourne homes that were never fitted with ducted gas heating, where a bayonet point is a simpler and cheaper way to get warmth into the rooms that need it.
It’s also a popular option if you’re weighing up a heater against gas hot water systems for other parts of the house, since both run off the same underlying gas supply.
Outdoors, for BBQs and Entertaining
Outdoor bayonet points are usually positioned on the alfresco, patio, or deck, close to wherever the BBQ or outdoor heater will actually sit.
We’re seeing more of these requests alongside outdoor kitchen builds and entertaining area renovations, where homeowners want a permanent gas connection rather than swapping LPG bottles in and out.
Why Gas Bayonet Fitting Installation Must Be Done by a Licensed Gas Fitter
This is the part that trips a lot of people up. Gas bayonet fitting installation isn’t a weekend project, and here’s why.
Only a gas fitter licensed through the Building and Plumbing Commission is legally allowed to connect a new point to your gas supply.
The work also has to meet AS/NZS 5601.1:2022, which is the current gas installation standard enforced across Victoria, and once it’s finished, your fitter is required to issue a Certificate of Compliance for the job.
Skipping the licensed route isn’t just a legal risk. Poorly fitted connections can lead to gas leaks and fire hazards, and if something goes wrong down the track, your home insurance may not cover you if the work wasn’t carried out by a licensed professional.
If you ever notice signs of a gas leak around an existing fitting, that’s a sign the installation needs attention sooner rather than later.
It’s easy to assume a bayonet point is a simple, low-risk job because the finished product looks so easy to use. In reality, everything that makes it safe happens behind the wall, in the pipework, the pressure testing, and the compliance sign-off, all of which needs a trained eye.
What Happens During a Professional Gas Bayonet Installation?
So what does a licensed gas fitter actually do once you’ve booked the job? It generally comes down to three stages.
Site Assessment and Gas Line Check
Before quoting, your gas fitter checks whether your existing meter and regulator can handle another outlet. Adding a bayonet point means putting extra demand on your gas line, so this step matters more than most homeowners realise.
They’ll also confirm ventilation and work out the safest, most practical spot for the socket, whether that’s against a living room wall or out on the patio.
Fitting and Securing the Bayonet Socket
Once the position is confirmed, the socket is mounted using WaterMark-certified parts and BSP-threaded connections. It’s sealed and secured properly so there’s no strain on the fitting once you plug an appliance hose into it, which is exactly the kind of detail that gets missed in a DIY job.
Pressure Testing and Compliance Sign-Off
Before handing the job over, your fitter pressure tests the line and checks every joint for leaks. If everything checks out, they’ll issue a Certificate of Compliance for the completed work, which is your proof that the installation meets Victorian gas standards.
It’s also worth mentioning that the same licensed process applies to other gas appliance work around the home, from gas cooktop installation to hot water systems.
How Much Does Gas Bayonet Fitting Installation Cost in Melbourne?
Pricing depends on a few things: how many bayonet points you need, whether they’re going indoors or outdoors, and how far the new point is from your existing gas line. A straightforward indoor point close to the meter will generally cost less than an outdoor point that needs a longer gas run out to the alfresco.
Because every property is different, gas bayonet fitting installation is best treated as a quote-based job rather than something with a fixed price tag.
Factors like wall access, whether the fitter needs to run new pipework under the house or through a slab, and how many points you’re adding at once can all shift the cost.
The most reliable way to get an accurate figure is to have a licensed fitter (like Neighbourhood Plumbing) assess your home and confirm what’s involved.
FAQ About Gas Bayonet Fitting Installation
A few questions we hear often from Melbourne homeowners considering this job.
Can I install a gas bayonet fitting myself in Victoria?
No. Any work that connects to your gas supply has to be carried out by a licensed gas fitter. DIY gas work is illegal in Victoria, and if something goes wrong, it can also void your home insurance.
How does a gas bayonet fitting actually work?
It runs on a simple push-and-twist mechanism. The valve opens the moment the plug locks into the socket, and it shuts automatically the second you disconnect it, so there’s no gas left flowing when nothing’s plugged in.
Can I use the same bayonet fitting for a BBQ and a heater?
Yes, as long as both appliances are rated for the same gas type and the fitting can handle the pressure each one needs. Your gas fitter can confirm compatibility if you’re planning to use one point for both.
What’s the difference between a bayonet fitting and a threaded gas fitting?
A bayonet fitting is push-and-twist, built so you can connect and disconnect appliances without any tools, which suits things that move around, like a portable heater. A threaded fitting is screwed on and generally permanent, and it’s more commonly used for fixed appliances such as a built-in cooktop.
How do I know if my gas bayonet fitting needs replacing?
Keep an eye out for a socket that feels loose, a plug that won’t lock securely, visible corrosion, or a smell of gas near the fitting. Any of these are worth acting on quickly.
If you notice a smell, it’s worth knowing what to do if you smell gas before anything else.
Conclusion
A gas bayonet fitting is a genuinely simple, safe way to connect a heater or BBQ once it’s installed properly and signed off by a licensed fitter. The trick is making sure that installation is done right the first time.
Ready to add a gas point for your new heater or BBQ? Neighbourhood Plumbing’s licensed gas fitting service covers bayonet fitting installation across Melbourne, from the site assessment through to your Certificate of Compliance.
Get in touch with our gas fitting team on 0488 885 122 to book a quote.
About the Author
From unclogging the toughest drains to repairing leaking toilets, Ricky is a seasoned plumber who has brought his craftmanship to homes across Melbourne. He is passionate about sharing plumbing tips just as much as he is about fixing your plumbing issues. So, when your taps or pipes begin leaking, you know who to call.
