Blue Pure 511 Particle + Carbon Filter

Works fine and is SO quiet!

This is the third Blueair machine in our household, the second 511 and the quietest by far. It's 3.5" shorter than the other 511 that we bought several years ago, but the same top/fan/etc. so I'm thinking they share a product number.

Air Filter Replacements

Great filter replacement. Really cleans air of irritants and pollen. Best purchase made. I also have the 311 model as well. Really keeps dust to a minimum in the apartment.

Blue Pure 511

I’m happy with it. I bought the 511 for its size and dimensions (the top & bottom have the same diameter). I sit it on a small wooden stool to keep it off the floor.