I absolutely love our AirDoctor Smart 3500. The app is really easy to navigate and shows when particles are being detected. It's amazing to see the amount of dust and dog hair that is grabbed by the pre-filter. Love love love and will definitely purchase another!
This is a wonderful Air Filter system. I bought one & unfortunately had to return it because someone already bought one. Please be sure you don't have to return this item, it costs 88. 90 to return through FedEx.
It is wonderful and we love it, but it is in our bedroom and when it is on auto and goes to red, it is on the highest setting and is so loud we can't hear the TV or it disrupts our sleep. We put it on low so its fine, but WOW its loud.