The 5500 is a fully automated Pellet stove with auto ignition and easy to use electronic controls. 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. It"s durable yet sleek design is built for years of high performance and to blend nicely with any room setting and designed to provide your home with the desired warmth even in the coldest of climates. This stove burns a carbon-neutral, "Green Fuel". These fuels are clean, easy to handle, store, and are, otherwise, waste products from the timber and agricultural industries. Heating your home with this unit insures that you are doing your part to conserve our nation"s primary energy resources.