I searched and searched and found this unit to be the best air purifier on the market and ordered it. It's built very heavy duty. The filters last a long time. I purchased an oversized unit on purpose so I can run it on medium to get the same cfms but even on high it's really not that loud and there's no fan rattling. I really love how the filters are before the fan so dust doesn't build up on the fan blades and cause them to become unbalanced after a while. Also love how there is no smart mess. Just a knob to adjust the variable speed motor. Just a solid and well built unit. Very satisfied.
Machine doesn't work to clean even 50% of air in a tiny 20sqm room and they refused refund nor replacement 14 days after receipt. Awful rude negligent customer service, all they want is your money then you can say goodbye if anything goes wrong. The truth is it's a complete scam. Get a CR box or carbon DIY box instead, <25% of the price.
Used this since i have asthma and we live in an old home with dust and occasional renovations and its been great! Also helped when we were getting smoke from canadian wildfires which were severely triggering my asthma but didnt notice at all with the filter.
This thing is very well built . Quiet on low and does an amazing job getting rid of smoke smells in my house . I would recommend this to anyone