Wanted to share my feedback on my PUREZONE 3-IN-1 TRUE HEPA AIR PURIFIER. I purchased this in hopes to resolve some allergy issues my family was having and after using it for a couple months now I have to say I’ve noticed a considerable difference. We live in Arizona where dust and allergies can be a problem and so I bought two units. One for my livingroom and one for the bedroom. Its so quiet yet effective which is so impressive. I’m glad I made the purchase, it was worth the investment.