Biomass Boilers

Biomass Boilers

Biomass boilers generally burn wood pellets, chips or logs to power central heating and hot water boilers or to provide warmth in a single room.

There are two main ways of using wood to heat your home:

  • A standalone stove burning logs or pellets to heat a single room. Some can also be fitted with a back boiler to provide hot water as well.
  • A boiler burning pellets, logs or chips connected to a central heating and hot water system.

Log burning stoves and boilers have to be filled with wood by hand. Some pellet and chip burners use automatic fuel feeders called hoppers, which refill them at regular intervals.

The Benefits

  • A low carbon option: the carbon dioxide emitted when wood fuel is burned is the same amount that was absorbed over the previous months and years as the plant was growing. As long as new plants continue to grow in place of those used for fuel, the process is sustainable
  • A good use for waste wood: burning wood can be a convenient means of disposing of waste that might otherwise be sent to a landfill site

Is a wood fuelled heating system suitable for my home?

To tell if wood fuelled heating is right for you, there are a few key questions to consider:

  • Do you have enough space? You'll need a large dry area close to the boiler to store your wood. Ideally this should be close to where the wood is delivered to your home to minimise the distance you have to carry it.
  • Do you have a suitable flue? You need a vent which is specifically designed for wood fuel appliances, with sufficient air movement for proper operation of the stove. Your existing chimney can be fitted with a lined flue, which is relatively inexpensive.
  • Can you comply with safety and building regulations? If you live in an old or unusual home this may be an issue.
  • Do you live in a smokeless zone? If so then wood can only be burnt in certain exempted appliances.
  • Do you need planning permission? You need to talk to your local authority if your flue will extend 1m or more above the height of your roof, or your home is in a Conservation Area or World Heritage Site and you plan to install a flue on the principal elevation visible from a road

To reduce your home's CO2 emissions further, consider installing solar electricity or some other form of renewable electricity generating system.