Blueair 503 HepaSilent Air-Purification System

First off I am amazed at how quiet it is. It is only loud on the highest setting, and even that is bearable, it is similar to running a box fan on high. However, as soon as you switch to the next setting down, it is much quieter, about the sound of a low fan or in some cases the sound AC makes when running - I think this is a great setting still good air flow but much too quiet to disturb anyone. The next two settings down, I literally CANNOT HEAR AT ALL! Specifically the next one down, I can only hear if I put my ear up close to it, and the lowest setting, "HEPA silent" I had to feel the airflow to be sure it was running. This is great, compared to my other air purifier (Honeywell 50250N) it is much quieter - it's second highest speed setting is as or more quiet than the lowest setting on my Honeywell, and it is also designed to cover a larger area and has a special filter option for filtering smoke.

I've only just bought it and ran it one day, so I can't say yet...Read more

Wow. I am shocked to say the results were within 2 hours. Current apartment has black mold. Asthma has been horrible wherever I go.. always using an inhaler and constant sneezing, head congestion, chest congestion, not sleeping, missing work, etc. I do have allergies and sinus issues, but... they were controllable and I was rarely using my inhaler until they started ripping the black mold out of the wall / drywall. I bought this to help until I move in a few weeks. I changed my mind about putting it in the current apartment (didn't want the mold in the new air filter). So I took it to the new place. Remember, no matter where I went, my asthma has been an issue (work, shopping, family). I cranked the Blueair on Max. After 2 hours I sat on the floor to unpack a few boxes. I was noticing my breathing was deeper, not shallow from my upper chest, but from my diaphram. I laid on the floor. I could breathe! It was effortless and not a struggle. No wonder I have been so exhausted.. it had...Read more

I originally purchased the whirlpool air purifier ap51030k which is highly recommended by users and Consumer Reports, but it was just too loud even on its lowest setting. It does seem to work well, but it vibrates and has a stiff breeze even on its lowest setting. After more than a week I still could not get used to the noise. In the morning I would wake up and wonder what the sound was even though it is another room. The whirlpool model is more attractive than the blue air and offers more extras (filter replacement light, etc...). But, the blue air model is nearly silent even on the next to lowest level. I leave it on the next to lowest level all the time except for when everyone is out of the house then I turn it on high for several hours. The high setting is extremely loud. Overall, it seems to work well, but I can't say that I notice any difference in air quality for certain. I burn wood to heat my house (via an insert) which is the main reason I purchased the purifier. I am...Read more