Recommended for: general indoor air pollution control including pollen grains, house dust mites, mold spores, and pet dander

Blueair 400 series air purifiers are our most popular and quietest air purifiers. Available with electronics, the Blueair 400 Series provides exceptional air purification in rooms as large as 365 square feet, perfect for mid-sized bedrooms or office. Nice design and overall good performance. It comes with a 5 years limited warranty. It offers 4 fan speeds for maximum comfort. 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.

The tried and true original

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.

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.


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-size rooms. Our Swedish design is not only attractive but built to last. We are known for our durable construction that is made of galvanized steel and is powder coated for durability and environmental protection that produces no chemical off gassing. The air purifier housing is easy to clean, and won't pick up grime and oily stains the way plastic may.

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 recalculated into the room.

Filter Fit

Blueair 403 with Particle filter is the ideal choice for allergy sufferers and other health-conscious individuals that need high-efficiency particle removal. The unit contains one polypropylene 3-stage progressive filter that contains millions of ultra-thin fibers with each state trapping progressively smaller harmful particles as they pass through the pleats. The Blueair 3-stage progressive filter effectively removes every type of particulate air pollutants, including allergens, pollen, mold spores, dust, pet dander, bacteria, and viruses.

Blueair 403 SmokeStop Unit is the ideal choice for allergy sufferers and other health-conscious individuals that need high-efficiency particle removal plus gas and odor control. The SmokeStop filter is a progressive carbon filter with a honeycomb-type structure that improves airflow and has hundreds of odor and gas absorbing carbon pellets. The filter contains 2.0 lbs of coconut shell activated carbonimpregnated with a 70/30 blend of Potassium Hydroxide (KOH) and Potassium Iodide (KI). The carbon eliminates volatile organic compounds (VOC), which are responsible for odors.

The Smoke Stop filter is recommended for use in rooms where heavy gaseous pollutants such as cigarette and cigar smoke or other VOC's are present.
  • US Warranty 1 year limited warranty on defects in materials and workmanship.
  • Extended US Warranty: Extended Warranty Available
  • Non-US Warranty: 30 days parts and labor
Ideal for mid-size rooms up to 375 ft2
99.97% filtration efficiency
Energy Star® qualified
Room Size: 365 sq.ft. (34 m^2)
Smoke -Clean Air Delivery Rate: 240 (408 m^3/h)
Dust -Clean Air Delivery Rate: 240 (408 m^3/h)
Pollen -Clean Air Delivery Rate): 240 (408 m^3/h)
ACH (Air changes per Hour):assuming 8-foot (2.4m) ceilings
  • 5 (365 sq.ft. room)
  • 5 (34 m^2 room)
  • 75-280 cfm
  • 130-475 m^3/h
    Size (HxWxD): 23 x 20 x 11 in.
    Weight: 33 lbs (15 kg)
    Energy consumption (watts): 30 - 80
    Noise level dB(A): 32-52
    Electronic sensors with remote: No
    Filter replacement indicator: Yes
    On/Off timer: No
    Speed control options: 4
    Caters: No - Handles
    Air outlet: Side
    Air inlet: Side
Blueair LIfetime Warranty Extension: Blueair warrants that your air purifier will be free from defects in material or workmanship for one (1) year from the date of purchase provided that you have replaced the filters with original Blueair replacement filters at least once every six (6) months (see “The Limited Warranty”) To extend the Limited Warranty from one year to LIFETIME, simply do the following:Become a Blueair Filter Club Member---- you must register and keep your Filter Club Membership active. If you become inactive, the LIFETIME Warranty is void.That's it! Not only will we remember your filter changes for you and send your new filters to your door free of any shipping cost, but we’ll keep your warranty active for as long as you are a member. Whether it’s 5, 7, or 10 years down the road, we’ll make sure your unit continues to deliver the cleanest, most refreshing air. Visit our Blueair Filter Club section and sign up today.

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Janome products are only for sale to USA customers. We will not be able to honor orders for international customers.