I got this to help with my dogs allergies in the spring and summer months. It is super quiet, runs all day long and shows a reading of the particles it is cleaning so you can guage the allergens or other contaminants in the air. Recently there have been air quality issues with smoke from the Quebec forest fires- and I have noticed the number being much higher than usual on the display. I feel so glad I have this to keep our air clean during these air quality warnings. Plus my dogs allergies are the best this year that they have ever been and the only thing we've changed is this. Well worth the price tag.

I appreciate the auto react feature. We have been dealing with smoke in our area and the dyson will rev itself up or down as needed. I like being able to see the actual air quality numbers as well. I don't think we would use the app so that wasn't a concern for us. We have a few different air purifiers and I got this one using our PC optimum points for most of the cost - by far the best one we have ever owned. It was an amazing deal that we were able to offset the cost on. Very very happy woth my purchase