I have slept with the fan on every night since I was 10 years old. I have 4 20" fans from different manufacturers. obviously well done, you'll notice it right away when you first pick it up to move it. Most other inexpensive fans don't have a ball bearing motor, why is that important ?I'm glad you asked, all 4 of my other fans ended up in my shop after running 24/7 at low speed for a year, turn them off, they won't start because they can't spin I fixed them all by drilling a tiny hole in the top of the bearing cavity, using a needle type grease gun and pumping in some good quality grease, the result is great, they all spin freely and work great, damn they'll come out throwing. We'll see With Air King and ball bearings I don't expect this problem Update May 2021 Still working Ready to buy an extra unit.
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