The Blueair 400 Series provides exceptional air purification in rooms as large as 365 square feet. Additionally, 400 models feature comparable mid-sized room performance that earned the BlueAir 501 Best of Class ranking in independent AHAM testing of Clean Air Delivery Rate (CADR).
Like all Blueair models, the 400 Series features award-winning Swedish design, patented HEPASilent™ technology, whisper-silent operation, and by far the best warranty in the industry.