Heating, Cooling & Air Quality > Air Purifiers > HEPA Air Purifiers #558 in Home & Kitchen > Heating, Cooling & Air Quality > Air Purifiers > Parts & Accessories See all 105 customer reviews See all 105 customer reviews (newest first) I looked at a third party chart capturing the published CADR (clean air delivery rates) of various manufacturers. I love the Blueair Hepa filters! I have had one for over 3 years now and it continues to work well. Mine seems to have a mind of its own. Aim a fan at it for best results. Worked great for about a year and a half then started giving off a strange odor. We changed the filters every 6 months religiously. This is the 2nd one we've had that failed."> Best Place To Put Your Air Purifier

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What do you do after you buy it Blueair 403 HepaSilent Air-Purification System Buy a Used "Blueair 403 HepaSilent Air-Purification System" and save 13% off the $549.00 list price. 11 x 20 x 23 inches #136,294 in Home and Kitchen (See Top 100 in Home and Kitchen) #134 in Home & Kitchen > Heating, Cooling & Air Quality > Air Purifiers > HEPA Air Purifiers #558 in Home & Kitchen > Heating, Cooling & Air Quality > Air Purifiers > Parts & Accessories See all 105 customer reviews See all 105 customer reviews (newest first) I looked at a third party chart capturing the published CADR (clean air delivery rates) of various manufacturers. I love the Blueair Hepa filters! I have had one for over 3 years now and it continues to work well. Mine seems to have a mind of its own. Aim a fan at it for best results. Worked great for about a year and a half then started giving off a strange odor. We changed the filters every 6 months religiously. This is the 2nd one we've had that failed.