What is an LPG Boiler?

By Rebecca Fox on July 1, 2015

LPG GasWhat is LPG?

LPG or “Liquified Petroleum Gas” is a natural hydrocarbon fuel composed of propane and butane gases produced by the refinement of crude oil.

It is so called because the gases liquify at only moderate pressure, which means that the fuel can be stored and transported conveniently in concentrated liquid form. LPG is also 250 times denser as a liquid than as a gas, so a relatively large quantity of fuel can be stored in a small space.

LPG is renowned for its cleaner burning characteristics; fewer components mean that it is easier to achieve the fuel to air ratio that allows LPG to burn completely. The presence of allowable unsaturated hydrocarbons in the mixture may, however, affect other characteristics such as corrosiveness.

LPG is used in many properties that are not connected to the grid as an alternative to traditional mains gas. It is also a popular choice with many households in combination with renewable energy sources like solar panels.

What are LPG Boilers?

LPG boilers are available ready built or can be adapted from standard natural gas boilers by installing an LPG conversion kit. They require smaller main burner jets than a gas boiler because LPG is supplied at higher pressure that the standard mains supply.

LPG boilers can be supplied by a central or individual bulk storage tank – typically with a capacity of between 1,000 and 2,000 litres and refilled periodically by tanker – or from smaller cylinders or bottles which can be taken away and replaced when empty. Due to the fact that you need to replace an empty LPG tank it’s important to consider when you will need a new tank so that you are not left without fuel.

How much do LPG boilers cost to run?

The running costs of LPG boilers are not hugely dissimilar to those of oil boilers and, like oil boilers, LPG boilers require a storage tank and a fuel feed. The cost of installing and running an LPG system will vary depending on several factors:

  • If you choose to rent or buy a storage tank
  • The size of your home
  • How many radiators you have
  • How you use your heating

Image source: gallagherboilers.co.uk

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