about ur product which led me 2 order. My wife age 79 was recovering from severe pneumonia. On 3/14/20 my wife came home from the hospital & I needed the best clean air unit 4 her bedroom. Your rep. Gene Walker walked me thru everything so well that I ended up purchasing another unit a few weeks ago. What connects these 2 purchases ? Mr Walker not only had all the answers but educated me what would work the best. Her breathing improved the 1st night/immediately after receiving the unit. After a few weeks I ordered the other unit to secure cleaner air in all of our living space. I also upgraded 2 the anti germ/bacteria filter. The units are very quiet, light weight & streamline. Ty Mr. Walker u & ur products are the best !