Used WoodMaster 4400 outdoor wood furnace for sale. This boiler is about 5 years old and can heat up to about 5,000 sq. ft. A few featuers include the smoke bypass for easy loading, a light for loading at night, and an auger for easy ash removal. It has a water capacity of 150 gallons. Feel free to get in touch via the form below or give us a call at 715-790-5636 for more information.