I just cleaned out everything today. Vacuumed around the fire box, ran auger until fresh pellets were loaded. Then turned it off. Let it sit for about 2 hours. Plugged it in an set it for 170. Took about 30+ minutes to reach. Let it run for 20 min @ 170. Turned it off. Fan ran for 25 minutes before shutting off. This with opening the door twice during the shut down process, as if you were removed the cooked food. Mine seams to run for a long time during shutdown since purchased.