Blue Pure 411i Max, 411a Max Particle + Carbon Filter

Not sure if it does anything

I guess I’m not sure how these work. I have three cats and thought it would reduce dander. It just always says my air quality is great until I vigorously shake out blankets or my pillow. Otherwise it just says everything is great. I find that hard to believe. Not in a room with 3 cats sleeping on the bed all day. Might be a waste of money.

Blue air 411a purifier

Grateful we could buy these filters as the stock was not available to us in Canada and we enjoy our Blue air product. Particularly now, during spring pollen allergy season for my husband.

Excellent Air filters

We love the way these work. They do a great job for us. We have three in different areas. Two of the machines have developed a low grinding sound. We have changed filters and cleaned them, but can't get rid of the noise.