I've noticed lately that the air output of my blower motor seemed to have a very small amount of air being blown out. Just taking a peek inside the back of the stove with a flashlight showed that the air intake screen was covered with a one-quarter inch of dust. I vacuumed the screen and the blower now is back to its full power. I just wanted to share this with any other users that may not think to check this screen - I know I did.