Tarm Biomass’ multi-fuel boilers are essentially two boilers on one chassis; one side of the boiler is a wood boiler and the other side is a fossil fuel boiler. They are able to utilize firewood and oil or gas (propane or natural gas). If the fire burns out due to lack of wood, the boiler will automatically switch over to the fossil fuel burner ensuring that your home never goes cold.

 

Separate combustion chambers and heat exchange tubes for each fuel type ensure maximum efficiency and reliability for both sides of the boiler. Multi-fuel boilers are especially appropriate for applications where there is an older existing fossil fuel boiler in place that needs to be replaced and/or there is only one chimney flue available. When there are separate oil and wood boilers in a home they normally each require their own independent flue. The multi-fuel boiler allows you to vent both the wood and fossil fuel exhaust up the same flue.