Blueair 403 HepaSilent Air-Purification System

Some of the online specs are misleading. The Blueair 403 unit (at least the one I received) actually has 4 speeds, just like the Blueair 402! Even the manufacturer's own website as of this review lists it as having only 3 speeds. The only difference between the 402 and 403 is that the 403 comes with a small electronic timer that is magnetic (you can put it on your refrigerator or on the Blueair unit itself) which shows you when 6 months are up and it's time to replace the filter. This is handy, but not really needed. So, if you can still find a 402 (now discontinued) for a good price, I'd recommend you grab it!

This is a great unit but it is a bit larger than I expected. If you have a small bedroom or office, it may look a bit imposing. It runs very quiet at the two lowest settings and even at the third setting, I found the sound soothing enough to sleep with. In fact, the first night I had it, I put it on the 3 speed setting and found the sound quiet nice and relaxing...Read more

I should start with the fact that everyone in our household has allergies, even the dog I think, but that had not been confirmed. Currently we have the Blueair units in all the bedrooms and family room. The best thing about Blueair units is they work! We really feel a difference. Before getting Blueair my wife was not able to sleep thru the night. She would get congested and her throat would get dry so she kept waking up to drink water. Whatever was giving her trouble is now gone from the air and she is finally able to get a good nights sleep.
Outside the fact that this unit cleans the air, I do also like that it is steel construction ( I did a lot of research and that is hard to find), its quiet!!!, and its energy efficient. As for warranty, the warranty card says mail in for free 5 year warranty.

Every morning I woke up with my eyes swollen almost shut due to allergies since I got the Blueair 403 HepaSilent air purification system, my eyes are no longer swollen. My sinus problems have greatly improved. I am very please with how quiet it is- I can sleep with it on the 2nd level. I would buy this product again.