Using oil to heat hot water that is then circulated through the central heating system, under UK law, since 2007 all oil-fired boilers must have a Sedbuk efficiency of 86% or more.

How does an oil boiler work?

Consisting of two parts, an oil-fired boiler includes a combustion chamber and a water tank. Oil enters the combustion chamber and feeds the burners which in turn fires up the water tank, heating the water and forcing it out into the central heating system.

The incoming hot water displaces the cool water which is then pushed back into the boiler, forming a cycle which is controlled by a thermostat.

What are the disadvantages of oil boilers?

  • Oil is expensive, and prices have been on the rise for the past few years
  • Oil is not available on mains supply, and supply is¬†depenedant on local oil providers during times of high demand
  • Oil boilers are generally not as energy efficient as gas boilers
  • Depending on tank capacity, you will need storage space for an oil tank
  • Reduced temperature when multiple taps are used simultaneously