I invested in this air purifier because I have developed a cough and wheezing which has impacted my ability to run. We heat with a wood stove so I thought I would try the air purifier to see if it helped with my symptoms (and the amount of dust). It seems to have helped my breathing substantially - no persistent nagging cough anymore.
We recently purchased our 3rd Fit50. We have a 2400 sq ft home and we wanted to increase the coverage. We purchased 2 Fit50 units a little over a year ago. Living in Arizona, dust can be a problem but not with the Fit50. It is amazing how little dust we pick up in the vacuum. We also don't have to change the AC filters near as often. Completely satisfied and totally recommend Alen air purifiers.
So far, so good. Haven't had our FIT50 for very long yet, but we have it in our bedroom and the first morning I woke up and felt like I was breathing cleaner air. It looks pretty slick in the space, too. Definitely an improvement over the appearance of other air cleaners I've seen.
These are the best air purifiers I’ve found. It is easier to order what you need by telephone, as their website is a little confusing and hard to work.