Had a problem with my Breckwell pellet stove filling the burn pot with heavy ash in as little as one night. Needless to say I had to clean it in less then every 24 hours to keep using the stove. I don't have a fresh air intake piped outside. Although I probably should. But to take care of the problem I have ,I use a small 4" desk top fan behind the stove at the fresh air intake. It's probably set 10 inches away from the intake pipe and provides plenty of fresh air to burn the pellets much more efficiently. Works super now!