![](https://blog.uvm.edu/cwcallah/files/2015/09/Marchant-Twighlight-Meeting-Inside-Ground-heat-house.jpg)
Dave Marchant (Riverberry Farm, Fairfax, VT) explains some of the features of his biomass heating system during a twilight meeting.
Dave Marchant (Riverberry Farm, Fairfax, VT) explains some of the features of his biomass heating system during a twilight meeting.