Ok I on my fourth season heating my home with the Harman P43 and I have used this forum to learn this unit top to bottom. I clean this stove often and about a week ago I cleaned it very well just to have it work well as the temps finally dropped below 30 degrees. I noticed a weird fan noise now as it winds up as it turns on but I also wondering it could also be the auger spinning. Guess its no big deal but still curious lol