Heating cost comparison

We know it can be difficult to work out if you have made the best financial choice when it comes to heating your home. How does the fuel you use compare to others available on the market?

OFTEC can help. The fuel price information we present here is updated every quarter using data supplied by independent fuel analysts, The Sutherland Tables, an is derived from information supplied by the fuel providers.

The costs are for an annual space and water heating requirement of approximately 16,000kWh, which is what might be expected for a typical three bedroomed semi-detached house. Many factors will affect how much heat is needed for your home, so these figures are provided for guidance only, and will probably not reflect exactly what you might use in your home. However, they do provide a basis for meaningful comparisons to be made.

Fuel costs are affected by three main factors, including:

  • The unit cost of your fuel
  • The efficiency of your heating system
  • The heating requirements (demand) of home and occupants.

Of these, the biggest variable is the last one. Heat demand is dependent on a wide range of factors, such as:

  • The size of the building
  • The number of external walls
  • The type of construction used – for example buildings constructed before 1920 will usually have single-skinned walls which let heat escape more easily
  • How much insulation has been installed
  • The type of glazing installed
  • The number of occupants and their behaviour – for example more occupants use more hot water and may need more rooms to be heated for longer, particularly if they are at home all day.

A large old detached house might have a heat requirement of well over 20,000kWh. Conversely, a modern home of the same size, but with modern glazing, state of the art insulation and very efficient heating might have a heat demand below 10,000kWh. Purpose-built low carbon homes can have much lower heat demands than even this, through retrofitting existing homes, particularly older buildings, to the same standard can be difficult and expensive.

The United Kingdom  - October 2019 

Cost Comparison data

Republic of Ireland - October 2019 

ROI-data

Note: Gas - Bord Gais Eireann condensing boiler | Electricity - Urban Night Saver | ASHP - Air source heat pump