It is important to have a vent free appliance serviced on a yearly basis to ensure that it continues to operate cleanly.By Uly from Northeast, VT on May 26, 2014 Is there such a thing as coal, pellet or wood direct vent stoves?By Tyler M. on May 27, 2014Answer:No, all solid-fuel stoves must utilize a class A chimney system that terminates above the roof.