LPG vs Propane – Propane Gas Bottle vs LPG Gas Bottle

LPG vs Propane

Propane is LPG. Propane and LPG are effectively the same.

This is true in Australia and the USA. In fact, they call it “propane” in the USA, instead of LPG, which is the much more common name here. 

Therein lies the problem. Many LPG appliances have the US as their primary market, so the paperwork and packaging provided makes reference to propane. It causes confusion for Australian consumers who don’t know where to buy “propane”.

However, LPG can also be butane (C4H10), isobutane (C4H10), as well as propane (C3H8) or a mixture of the three, in other countries.

Propane Gas Bottle vs LPG Gas Bottles

A propane gas bottle and LPG gas bottles are, likewise, the same thing. The exact same bottles and the exact same contents. 

There is no difference between a propane gas bottle and LPG gas bottles, except for the name.

Gas Bottles

Gas bottles range from LPG gas bottles for home – 45kg gas bottle, 90 kg gas bottle or the larger 210kg LPG gas bottle sizes (gas cylinder sizes) and cylinder capacity to BBQ gas bottles with a small size, like a 9kg gas bottle dimensions.

45kg Gas Bottle

 A 45kg gas bottle (≅ 100lb propane tank) is the most common size of home LPG gas bottles. A 45kg gas bottle can be refilled onsite, via LPG refill tanker trucks, or exchanged. (See accompanying image)

A usual installation contains two 45kg LPG gas bottles, allowing you to switch LPG gas bottles while awaiting refill or exchange for the empty.

Two 45kg Gas Bottles

BBQ Gas Bottle 

A BBQ gas bottle contains LPG gas (propane) and is typically used for outdoor cooking on a barbecue. Propane is preferred over butane, as it works better in colder weather. 4kg & 9kg gas bottle dimensions are the most common BBQ gas bottle sizes in Australia. 

Gas Cylinders 

LPG Conversion Value

A gas cylinder is a pressure vessel for the containment, storage and transportation of gases at above atmospheric pressure. Compressed gas cylinders are also called gas bottles.

Gas cylinders can contain various gases, other than LPG. Common gases would include welding gases, medical gases, beverage dispensing gases and helium. There is also a myriad of other scientific and industrial gases.

LPG – Liquefied Petroleum Gas – Liquid Petroleum Gas

Liquefied Petroleum Gas or Liquid Petroleum Gas – LPG – are flammable hydrocarbon gas mixtures stored in a liquefied form and typically used in gaseous form. Propane, butane and isobutane are the three most common LPG gases and are generally used as fuel in heating, cooking, hot water and as vehicular fuel.

Bottled Gas

Bottled gas is generally understood to mean LPG gas in bottles. The LPG gas bottles are usually steel vessels for storing and transporting propane and butane.

Technically, bottled gas refers to holding any compressed gaseous substance which is a gas at standard temperature (20°C) and standard pressure (1 atm).

Whilst typically steel, LPG gas bottles can also be aluminium, composites, stainless steel or hot dipped galvanised steel.

LPG Tank

An LPG tank or LPG storage tank – sometimes called a ‘bullet’ – is an LPG vessel made of welded steel sections. It is engineered for the specified content weight, design pressures and heat expansion of the stored propane and/or butane – the stored hydrocarbon gases. The most common application for an LPG tank is at a service station, for LPG Autogas.

Gas Bottle Exchange

There are two ways to get home LPG.

Most homeowners get their gas bottles exchanged, when the run out. If you order immediately when the first bottle runs out, you should have plenty of time to receive a replacement. 

ALWAYS ASK THE 45kg GAS BOTTLE PRICE BEFORE ORDERING a gas bottle refill or exchange.

Don’t assume that the LPG price per bottle is the same as the last time.

Gas bottle refill suppliers change their gas bottle prices as often as once a month and they don’t send out notice of these changes. So, you should always ask for the price first.

Gas Bottle Refill

The other way to get more home LPG is with tanker refill.  They bring the tanker to you and fill on site. They can even schedule it for you, so you never even need to order.

However, letting them schedule your deliveries means you will get gas with no idea how much it will cost. Ring to order is much safer way to get refills, as you can ask the price, which will be in cents per litre.

ALWAYS ASK THE 45kg GAS BOTTLE PRICE BEFORE ORDERING a gas bottle refill or exchange. 


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The information in this blog is retrieved from various resources and is believed to be correct when published. The information may not be error free nor applicable in all circumstances.