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What is Wood Pellet?

Pellet wood fuel

Wood pellets are small, typically 6mm in diameter and up to 15mm long, made from processed sawdust and wood chips. These materials are dried, heated, and compressed. Under high heat and pressure, lignin, the natural binding agent in wood, softens, allowing the wood fibers to be shaped and pressed into pellets.

Pellet-burning boilers offer a similar level of control to oil and gas appliances, making them an appealing option for many. Unlike logs, wood pellets can quickly regulate heat, allowing the system to be switched on or off as needed. An intelligent pellet transfer system moves the fuel from storage to the combustion chamber as required. A sensor controls the air supply, ensuring automatic ignition, and the system continuously adjusts heat output based on demand. Pellet-burning systems can be used to heat anything from a single room to an entire home or commercial space.

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