Can you convert a natural gas heater to LPG?

Looking to convert your natural gas heater to Liquefied Petroleum Gas (LPG)? This Canstar Blue guide discusses the process involved and the pros and cons of switching fuel types.

From cooking on the stove or BBQ, to heating water or running appliances, gas is an incredibly versatile resource. With different types of gas available, however,it can be confusing to know which type you will need for your home appliances.

So, what happens if you buy an appliance such as a natural gas heater, only to later move to a home that doesn’t have a connection to the gas mains?

In this Canstar Blue guide, we explain whether it’s possible to use LPG with a natural gas heater and discuss the options available to you.

What’s the difference between natural gas and LPG?

The main difference between natural gas and LPG is the way these gasses are produced and supplied. LPG is produced during oil refining or extracted during the natural gas production process. It is usually a combination of propane and butane gas – in Australia it’s mostly propane-based – and provides high levels of heat in less time than natural gas. In order to be stable for transport, LPG is put under pressure to form a liquid and stored in a high-pressure tank. You’ll recognise it as the gas canister usually seen next to the barbeque. It also comes in larger canisters that can be delivered to your house by an LPG supplier.

Natural gas is slightly different as it’s extracted directly from the earth and can contain ethane, propane, butane and pentane gases. A 2022 Energy Networks Australia report found that 49 per cent of Australian homes use natural gas for their hot water, appliances and heating systems. Unlike LPG, natural gas is delivered via pipelines (known as the gas mains) directly to your home. It tends to be more convenient for the larger systems required in the home, such as hot water systems. And unlike with LPG, you don’t have to keep track of gas levels or swap out bottles because it’s connected straight to the source.

Can you use LPG with a natural gas heater?

The short answer is no. LPG and natural gas operate at different pressure points, meaning LPG and natural gas appliances are not interchangeable and have to be converted. However, not all gas appliances are able to be converted due to design or certification requirements.

If you try to use LPG in an appliance designed for natural gas without converting it , the appliance may not be able to handle the pressure. This could cause it to malfunction or explode. That’s why it’s important to ensure you are using the right fuel or have a professional gasfitter convert the appliance for you.

To see what fuel type your heater uses or to see if it can be converted from one gas type to another, it’s best to check the owner’s manual or look on the manufacturer’s website. Alternatively, you can contact the manufacturer directly to see what it recommends.

How do I convert my natural gas heater to LPG?

To convert an appliance, such as a heater, from natural gas to LPG you’ll require the help of a licensed gasfitter. They’ll check if the appliance is suitable for conversion, as well as checking the gas source. It’s extremely important that you don’t attempt to do this yourself as if it is not done correctly it could lead to serious injury or death.

To find a local, licensed gasfitter in Victoria, New South Wales or South Australia – go to the Australian Gas Networks website where you can put in your postcode and see gasfitters and gas appliance stores within a 70km of your home.

The Master Plumbers’ Association of Queensland has a similar service for Queenslanders, but its website covers a wider range of specialist tradespeople and produces results in a 30km radius of your home.

Tasmanians can access the Tasmanian Government website, to search for all kinds of trade and professional building services, from gasfitters to architects. And if you’re in South Australia or the Northern Territory, Master Plumbers’ Association of SA/NT also has a similar resource where you can use your postcode to find tradespeople and services in your area.

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Basic Plan Information

Can you convert a natural gas heater to LPG?

What’s the difference between natural gas and LPG?

Read more: Natural Gas vs LPG: What should you get?

Can you use LPG with a natural gas heater?

How do I convert my natural gas heater to LPG?

Compare cheap natural gas prices