Butane and propane are both types of liquefied petroleum gas. They have similar chemical properties but are used for different appliances. The two are not interchangeable due to their varied chemical composition, resulting in them operating at different pressures and temperatures. Propane is a three carbon atom which means it has a lower boiling point than butane so it has the ability to be stored in extremely low temperatures. It can be stored in temperatures as low as -45°C and still have the ability to convert liquid into gas. In terms of LPG, propane is the gas which is most widely used for domestic, commercial and agricultural purposes. This is stored in an outdoor bulk tank which can be kept above ground or below ground depending on its location and the preference of the homeowner. Butane is best suited for indoor use or outside in the summer. It’s a popular option for those that use portable heaters or stoves when camping. Butane is usually stored in cylinders which are easy to transport, or a small fixed tank which is ready to use. Butane boils at 0°C, which is why it is not suitable in cold temperatures. It remains a liquid until it reaches its boiling point.