Chris and Clare Weissflog’s Carbon Zero build, at 732 Heritage Drive in Merrickville, has been chosen by the Ontario Sustainable Energy Association as a stop on the Green Energy Doors Open tour. The event happens Saturday, October 4th. To find out more about the tour, visit http://greenenergydoorsopen.ca/about/. To learn more about the Weissflog house, visit http://www.ecogenbuild.ca/.