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A person taking a gas bottle from underneath a BBQ


Planning a barbie with some friends this weekend but run out of gas? Never fear! Changing over a gas bottle is WAY easier than it looks. Here's how to do it.


1Check how much gas you've actually got left

Got enough gas to cook those snags on the BBQ? There are two ways to find out. The easiest is to weigh your gas cylinder– the weight of the bottle without any gas in it is listed on the outside. If you're hovering down near that number (in most cases, 8.5kg) chances are you're going to need to change it over.

If you don't have any scales handy, do the hot water test. Just grab a jug of hot soapy water and pour it over the bottle. Run your hand down the canister until it feels cold, and that's the level the gas is at. 

2Unscrew the bottle

Before you do anything else, you'll need to make sure your gas bottle is locked, and that no gas can escape. Turn the gas off by turning the cylinder valve hand wheel clockwise.

Next, you can unscrew the regulator (that's the bit that connects to the bottle). Fun fact: this unscrews the opposite direction to a normal nut and bolt, so it's ‘Lefty Tighty, Righty Loosey' (we know - confusing, right?)

Once this is done, you're good to unhook your bottle from the BBQ mounting hook/holder. And voila! You're ready to change it over. 

Turning the fittings of a BBQ gas bottle

3Install new full gas bottle

It's time to head out to swap your bottle over – go to your nearest Bunnings. When transporting back to your place, make sure you store the canister upright and that it's secure in your car.

Once you're home, make sure the gas is turned off and that you've removed any safety plugs or dust covers. Then screw the gas bottle regulator back on and tighten by hand.

Securing a hose to a BBQ gas bottle

4Give it a once-over

Safety first, people. It's important to check your bottle doesn't have any rips, tears or surface damage. If you're not sure, a good way to check is to grab some soapy water and spray it onto the end that connects to the bottle – if there's a leak, you'll see bubbles appear. Give the end connected to the barbie a quick look over, too.

Spraying the fittings of a BBQ gas bottle with soapy water to detect leaks

5Spark it up!

Well, what are you waiting for? It's time to cook those snags.

6Check out the range

Time for a new barbie? Or maybe some BBQ accessories or a fresh gas bottle? We've got what you need.

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Health & Safety

Asbestos, lead-based paints and copper chromium arsenic (CCA) treated timber are health hazards you need to look out for when renovating older homes. These substances can easily be disturbed when renovating and exposure to them can cause a range of life-threatening diseases and conditions including cancer. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page.

When following our advice in our D.I.Y. videos, make sure you use all equipment, including PPE, safely by following the manufacturer’s instructions. Check that the equipment is suitable for the task and that PPE fits properly. If you are unsure, hire an expert to do the job or talk to a Bunnings Team Member.