Understanding Natural Gas and LPG

In New Zealand, both natural gas and LPG (Liquefied Petroleum Gas) are commonly used, but it's important to understand the differences between the two.

What is LPG?

LPG, or Liquefied Petroleum Gas, refers to a mixture of hydrocarbons, primarily propane and butane, stored in a liquid state. It is colorless and odorless, but a stenching agent is added to give it a distinctive smell, often compared to rotten cabbage, to detect even small leaks easily.

LPG is a versatile fuel, commonly used for heating, cooking, and even vehicles. Globally, LPG is typically propane, but in New Zealand, it's a mix of propane and butane. This mix requires imported appliances to be compatible with New Zealand's unique gas composition.

What is Natural Gas?

Natural gas is an odorless, colorless hydrocarbon gas, mainly composed of methane. It forms in a similar way to oil, through processes acting on organic matter over millions of years. A stenching agent is added to natural gas as well, giving it a similar rotten cabbage smell for leak detection.

Natural gas is highly combustible and valued for its clean burning properties. It's primarily used for heating homes, cooking, and running appliances like water heaters and clothes dryers.

Key Differences Between Natural Gas and LPG

Natural Gas:

• Primarily composed of methane.

• Methane's lightweight nature allows it to disperse easily if there's a leak, contributing to its safety record.

• Typically delivered through pipelines.

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LPG:

• Made up of propane and butane, either individually or mixed.

• Non-toxic and non-corrosive.

• Produced during oil and gas extraction and stored in tanks or cylinders.

• Heavier than air, causing it to collect in low areas, making it more challenging to disperse and increasing the risk of fire or explosion in the event of a leak.

Understanding these differences helps in choosing the right gas type for your needs and ensuring the safe use of gas appliances in New Zealand. Whether you opt for natural gas or LPG, both offer efficient and reliable solutions for heating and cooking.

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