Biomass stoves and boilers supply heat or hot water to buildings. The term biomass includes a variety of organic material, such as trees and organic waste. Biomass creates CO2 emissions. However, burning wood only emits as much CO2 as the tree absorbed while growing, making it ‘carbon neutral’. A biomass stove may be located in a living room, whereas a biomass boiler is larger and may be located in a separate utility room.
Consider in advance the location and the size of the boiler including the flue and the feeder, and the space for storage requirement of fuel, such as logs, pellets and woodchips.
- Biomass is especially sustainable when locally sourced.
- The best biomass systems can be over 90% efficient, their cost effectiveness depends on the type of fossil fuel displaced and the type of wood used.
- A wood-burning stove can cost anywhere from £500 to £3,000 to install. A biomass stove (6-12 kW) costs around £3,000. A 20kW biomass boiler costs between £10,000 and £15,000.
You can retrofit your wood burning stove in your unused fireplace; vents can be installed in the ceiling to provide heat also to the rooms upstairs.