What is Wood Pellet?

Pellet wood fuel

Wood pellets are small, typically 6mm in diameter and no more than 15mm long. They are made from processed sawdust and wood chips that have been dried, heated and compressed. When heated and exposed to high pressure, lignin, the binding component in wood, softens and allows the wood product to be shaped and pressed into a pellet.

Pellet burning boilers can offer the similar level of control as oil and gas appliances, making them an attractive choice for many. This is because unlike logs, wood pellets, and therefore heat generated can be switched on and off quickly. An intelligent pellet transfer system carries the fuel to the combustion chamber from the fuel storage area as heat is required. A sensor regulates a measured air supply, ignition is achieved automatically and the heating output adjusts continuously to the heating needs. Pellet burning appliances can heat a single room, a whole house or commercial applications.

Find out more about Wood Pellet Boilers and how they work below.

The benefits

  • Fully replace fossil fuelled boilers

  • Fully automatic control/feed systems

  • Automatic ignition and cleaning

  • Less bulky fuel and cleaner than log or wood chips

  • Boilers suitable for all size applications

  • Running costs are stable and reliable

  • Supports UK economy with pellets that are produced locally

The check list

  • Pellet quality is important for good operation

  • Higher installation cost compared to fossil fuel boilers

  • Requires dedicated boiler house and fuel store

  • Requires annual maintenance by engineer

  • Require occasional ash removal and inspection

Pellet wood fuel