The Ultimate Wood Heat. Set the thermostat where you want for a more comfortable home. The Classic Edge is U.S. EPA Certified More Comfort-Thermostatically controlled wood heat. Peace of Mind - Keep the fire outside and eliminate the dangers associated with indoor wood heating. .Save Money -Wood is a renewable, inexpensive and often free energy source. Durability-Long-lasting, stainless steel firebox. Timberland Outdoor Boilers 10660 W. M-55 Hwy. Wellston, MI 49689 231-862-3134 timberlandoutdoorboilers.com CLASSIC EDGE TITANUM HD SERIES Outdoor Wood Furnace CentralBoiler.com Central Boiler outdoor furnaces adapt easily to new or existing heating systems. It's important that your outdoor furnace and system be property sized and installed. See dealer for details