Harrisville, NY, Apr 28, 2010 — Outdoor wood furnaces have become increasingly popular across the North Country. They can save homeowners more than a thousand dollars a year on heating costs. But they've also become a bigger source of air pollution and complaints from neighbors. The Department of Environmental Conservation wants to impose new regulations on outdoor furnaces. They include rules on boiler efficiency, chimney height, and what can be burned inside. As David Sommerstein reports, a provision to force owners to replace existing furnaces may be the most controversial.