In my opinion, the PURO AIR 400 is the best product on the market. In Idaho we had four weeks of dense smoke with air quality in the hazardous level. We were worn to stay inside with the PURO AIR 400. We had no problem breathing in fresh air. I highly recommend this product to anyone that’s looking for an air cleaner.
The PuroAir 400 Hepa Air Purifier is an intuitive small appliance. When we start frying fish or bacon in the kitchen, somehow it is sensed and the PuroAir 400 goes in to high gear to clear the air as soon as possible. The dog traffic back and forth in the great room is not a problem anymore. We're just happy to enter fromoutside and be treated to clean smelling and clear air all the time.
My purifier made a loud rattling sound as though the turbine was striking the housing on every rotation. Got a real human on the phone within seconds and she walkede through some troubleshooting, which didn't work. They shipped a new one right away.If the company is curious, the issue turned out to be a faulty nut which held the turbine to the axle. It was drilled crooked, and caused the turbine to sit askew.