US Stove 2000 Sq. Ft. EPA Certified Pellet Stove. 5520. Freestanding Stoves. The US Stove Company 5520 is a fully automated pellet stove with auto ignition and easy to use electronic controls. Its durable yet sleek design is built for years of high performance and is designed to provide your home with the desired warmth even in the coldest of climates. This stove burns carbon-neutral, pellet fuel, considered environmentally friendly. The wood pellets used in this stove are clean and easy to handle, and are, otherwise, waste products from the timber and agricultural industries. Heating your home with this unit ensures that you are doing your part to conserve our nation s primary energy resources. It comes with an exhaust blower for negative draft that pulls flue products through and out to completely eliminate smoke spillage and an automatic circulation blower to spread heat evenly. Has an optional fresh air intake that is sold separately.