These units were purchased prior to me assuming my current position. I have since continued to use them and replace filters/bulbs as needed. We currently have three of these units, two of which are located adjacent to highly sensitive equipment in order to eliminate any airborne issues from affecting the machines.

I must say that I do love the system! I have not seen ANY dust on the first floor, I noticed that even the TV does not collect any more dust on the screen. Now that in itself is amazing. I always has to dust it everyday. I notice that it cleans the air as well. Especially, since the kitchen is on the first level (ranch style house) and there is no exhaust fan. Another thing I noticed was that my cat was having some sort of skin allergy problems for the past couple of years and now the sores are almost all healed. My neighbor is thinking of purchasing one as well.