Bests & Worsts Reviews from Amazon

I now have three of these units in my home. My wife is allergic to all kinds of "stuff". I am pleased with the performance of this unit and it has helped to reduce allergy issues in my house, BUT I have had one defect... The unit performs well. Sound levels are acceptable at higher speeds and very quiet at lower speeds. I have one unit in my family room, one in the upstairs loft, and one in the master bedroom. I used a Sharper Image Ionic Breeze for nearly twenty years (yes 20 YEARS). It had UV, but was not well shielded which ment I had to keep the unit away from the kids. The wife also had problems if the unit was producing too much ozone (..in the master bedroom). These towers do a good job of shielding the UV light with no ozone. The unit is well designed and quality built, but it is the UV light that I had the defect with. The very first unit burned out it's UV bulb in less than a week. I returned the unit without issues and got a replacement. I decided I would let it run for a bit to see if the second unit had similar problems, it did not. So now I have three... **UPDATE: 2-3 months in now and I have 2 more units with burnt out UV bulbs. These bulbs are $31 each. If these bulbs burn out at this rate there's no way I can afford to keep these units around. Also, forget the six month life cycle on the HEPA filter.. Mine got completely clogged in 2-3 months. Not huge because it shows how well the filters are working in my home, but these filters are starting to look like a very expensive maintenance item. So just be aware that long term, this units will cost you $$$. Dropped the rating due to these issues... ***LAST UPDATE: I finally figured out the UV bulb problem. Two of my units kept blowing UV bulbs constantly (I almost gave up on this thing), BUT 1 never blew its bulb. I started to wonder why and realized that this particular unit was plugged into a power block with a surge protector. I decided to add surge protectors to my other two units, so I purchased and installed a Minuteman MMS110 Surge Protector from Amazon on each unit. I haven't had any UV issues since, and it's been several months now. Sooo, it appears these units are very sensitive to power spikes. If you're having similar issues, try a surge protector! Going back to 4 stars!