Blueair 601

Pros: Quality machine, 10 year warranty and quiet operation.

Cons: Required by warranty to change filters every 6 months.

Review: I bought the larger BlueAir 601 model because I wanted proper room coverage at the lower, quieter speeds.

I was not disappointed. The 601 has 4 speeds and is very quiet on the 2 lower ones. Speed 3 is also quiet with what I would consider...

Pros: Cleans a lot of air, easy to maintain, no clean air drafts created, quiet

Cons: Filters last 6 months & pricey. Only 3 settings on the fan

Review: I have to admit I was a bit overwhelmed with all the seemingly conflicting reports of which air filter was best. I had it down to two units, the BlueAir 601 or the Friedrich 90b. I was concerned about ozone emission with the Friedrich, leading me to...