The Breckwell SWF1035 Wood Furnace offers a robust heating capacity of up to 3,500 square feet. At maximum output, the SWF1035 produces approximately 180,000 BTUs of heat, which is a great output. Its heavy-duty cast-iron door with a glass viewing front creates a flame-like atmosphere while remaining efficient. The open plenum makes installation simple, and the SWF1035 is the best furnace in its class, with an integrated ash pan, two blowers, and a firebrick line combustion chamber. This newly built wood-burning furnace is a good solution for bigger heating applications. The SWF1035 EPA-certified furnace surpasses 75% efficiency.