I bought two for my small cottage in N. California. I have cats (dander) a fireplace (smoke) and live by a creek under the redwoods (mold). Wow. After the first night running both units, I woke up WITHOUT a stuffy nose, and no sneezing! And happy I upgraded and bought the units with the PM display! This thing is so sensitive that when on "auto" mode, it will kick in when I light scented candles or if my smoker friend walks by it after having a cigarette outside. Makes you really aware of toxins in your air.

I have had this unit for approximately a month. I bought it to supplement two larger (680i) units that I have in bigger areas of my small home. The 280i unit fits well into a small bedroom at the end of a hallway. I have it positioned within a few feet of the open doorway, so that it also brings in some of the air from the hallway. Although it is not as powerful or effective as the two 680i units I own, it really works well for this specific purpose, and in conjunction with the larger units, it really contributes to keeping my indoor air quality high. The unit was easy to set up and connect to the internet. I keep it on automatic most of the time, but if the air doesn't seem fresh enough, I turn it up to the second level on manual. I never need to run it on the highest setting, and thus far the automatic setting has kept it on the lowest setting at all times.

I bought the 280i a few weeks ago because some cooking smells were lingering in my bedroom from bad ventilation. I’ve been so happy with it that I ordered another for the living room. The app is easy to use and the unit is so easy to connect to wifi. It took me 5 minutes from box opening to get all set up. I love looking at the air quality stats. The air smells so fresh and clean. I also love how it’s whisper quiet on the lowest setting, and there is a door over the panel so the lights on the display don’t bother you at night.

This air filter is a miracle worker! We have a problem of neighboring cigarette smoke and very strong cooking odors coming in thorugh shared walls and running this machine eliminated the issue! I even tried a competing air filter and it failed compared to Blueair.

I've bought four of these now, for bedrooms, livingn room and the original offensive mud room with shared walls.

In addition, we have very polluted air quality where I live - from pollens to factories and again, this air filter really cleans up our air!

Thank you Blueair!