I am not going to add to the technical discussion, but I have a Jet 1000B. It quit working after a couple of years. It wont stay running if it gets to speed at all. From other posts on this filter unit, I understand that there is a resistor that goes bad on the board and has to be changed. I actually bought the resister but haven't changed it. After everything I have read about filtering and particle size that affects your health, I think I will build the Pentz unit and junk the Jet. The air filter is the key, I have the Clearvue and really like it. The air cleaner uses the same type of filter - just coated on the other side so the air is pulled in from the outside to capture the dust.
Thank you,
Rich Aldrich
65 miles SE of Steve Schlumpf.
"To a pessimist, the glass is half empty; to an optimist, the glass is half full; to an engineer, the glass is twice as big as it needs to be." Unknown author