The Blueair 400 Series air purifiers provide 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).

Experience the crisp feeling of cleaner air brought to you by the model that made Blueair a world leader in air purifier design and technology.

Although this unit is designed to clear the air in mid-sized rooms, there’s nothing middle of the road about the Blueair 403. Ingeniously designed and brilliantly engineered, the Blueair 403 is based on the absolute original Blueair air purifier first tested at the prestigious Karolinska University Hospital in Stockholm over a decade ago.

The Blueair 403 continues to deliver outstanding performance that has withstood the test of time. Using patented HEPASilent™ technology, it captures 99.97% of the tiniest 0.1 micron particles on level one, including allergy-provoking pollen grains, dust mites, mold spores and pet dander particles.

Design
The union of visually pleasing form and effective function is a hallmark of Swedish design, and Blueair is no exception. The Blueair 403 is designed for maximum performance in mid-sized rooms. Available in white/dark grey, it suits your distinct style of living.

How it works
Air is drawn into the unit via an ultra-quiet fan. Airborne particles pass through an ion chamber and are charged to ensure that they adhere effortlessly to Blueair’s progressive three-stage filter. Cleaned air that is free of impurities is recirculated into the room.

At a glance
•Ideal for mid-sized rooms(365ft2 or 34m2)
•99.97% filtration efficiency
•Energy Star® qualified
•Available in white/dark grey

Technology
Blueair's patented HEPASilent™ technology combines the best features of electrostatic and mechanical filter technology to enable the delivery of more clean air at a faster rate with less noise. Phenomenally low power usage minimizes energy consumption. Plus Blueair air purifiers actually reduce the levels of ozone in indoor air.

Blueair 400 series are the perfect home air purifiers.

Click here for the Blueair 400 Series Particle Replacement Filter