Blueair 503 Smokestop™ Air Purifier

Blueair 503 Smokestop™ Air Purifier


The Blueair 503 Smokestop™ Air Purifier cleans indoor air of odors, fumes and allergens in larger rooms up to 580 sq ft (about 24’ x 24’). The Smokestop version of the Blueair 503 Air Purifier combines all of Blueair's filtration technology onto a HEPA Smokestop Filter (3 HEPA Smokestop filters included per machine). This filter features both Smokestop's active carbon filtration to absorb fumes, heavy odors and VOCs (including tobacco smoke), and Blueair's HEPASilent™ particle filtration to remove 99.97% of airborne allergens to 0.1 micron.

The Blueair 503 Smokestop features an airflow rate of 75-280 cfm with 5 air exchanges per hour. Cleaned air is gently diffused back into the room with no drafts thanks to Blueair's SurroundAir™ technology. CADR ratings for particle filtration (an industry measure of contaminant-free air delivered by an air purifier) are 375 for dust, 375 for pollen, and 375 for smoke. 5-Year Manufacturer's Warranty.

This product is subject to Minimum Advertised Pricing (MAP).

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Extra Info

Designed for ultra quiet operation, the Blueair 503 Smokestop operates at a noise level of only 35-71 dBA. This eco-friendly Blueair 503 is Energy Star rated, consuming just 35-120 watts of electricity. This air purifier comes equipped with four (4) casters for easy transport from room to room.


To view a PDF of the Owner's Manual, click here.

For best operation, place the unit a minimum of 4” from any object.

The easy-change HEPA Smokestop Filter 3-pack need only be replaced once every 6 months. A filter indicator light tells you when it’s time to replace the filter pack.


  • Cleans air in larger rooms up to 580 sq ft (about 24’ x 24’)
  • Recommended where there are harmful gases, chemical fumes or tobacco smoke
  • HEPA Smokestop filter (3-pack) combines:
    • Smokestop's advanced carbon filtration to remove heavier fumes, odors and VOCs, with
    • Blueair's HEPASilent™ particle filtration to remove 99.7% of airborne allergens down to 0.1 micron
  • CADR ratings:
    • Dust: 375
    • Pollen: 375
    • Smoke: 375
  • SurroundAir™ technology gently diffuses clean air back into room with no drafts
  • Galvanized steel housing
  • 3-speed operation
  • Caster wheels for easy portability
  • Noise level (35-71 dBA)
  • Measures 26”H x 20”W x 13”D
  • Weighs 35 lbs
  • 5-Year Warranty