Heating Your Home: The Lowdown on Oil Boilers

Everything you need to know about Oil Boilers - Wise Energy

Whilst many of us within the UK are familiar with the popular gas boilers, a large proportion of rural regions off the gas grid rely upon the use of oil. We take a look closer look at oil boilers and the ways in which they can keep your home warm this winter.

The Basics

With over 4 million homes across the country not connected to the national grid, oil boilers can be a necessity for many households. Kerosene is the main type of oil used, burnt through the boilers in order to create heat and hot water, much like a standard gas boiler.

The Math

1 litre of Kerosene is 10.35kWh of heat = 3.2 pence per kWh of heating oil.

In comparison, one unit of gas from the mains grid = 3.8p per kWh. approx.

That’s a saving of 0.6p per kWh when using oil. It may not sound a lot, but can soon add up!


  • The ability to use kerosene oil off the grid will ensure hot water and heating for many households across the country.
  • No need to be connected to the grid due to the ability to store large quantities of oil on a property.
  • The cost of heating oil is generally slightly cheaper than a gas boiler.


  • Must top up supplies on a regular basis or risk running out of oil – this can result in no hot water or heating which isn’t ideal in the winter months!
  • The price of oil can fluctuate, which can result in varying degrees of cost. Try stocking up in the summer months when demand is lower and the prices cheaper, saving you money in the winter months. Oil is available through a variety of suppliers – you can find a full list in the Federation of Petroleum Suppliers (FPS) directory.

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