I LOVE my Envi pure! I have dogs that love to get dirty. The pure has made my home smell soooo much better and feel cleaner. My son has terrible seasonal allergies as well. Since we've had it his symtoms while inside have reduced dramatically. I really like to filter life feature. I use to have another brand a few years back and was never really sure when I was suppose to change the filter. I didn't like throwing it away too soon but also wanted to know it was still working. The filter life feature takes that guessing game away. I will definetly be buying another one for the other side of my house soon.