PUREBURGReplacement Smokestop Filter Compatible with Blueair 500/600 Classic 503 505 603 650E 550E 501 510 555EB 601 605 580i 680i Air Purifiers,H13 HEPA 3-Stage Filtration Activated Carbon

Have been using these air filters for about 5 year on my Blueair 500 system. Solid construction and good airflow (not restricted). Have tried couple other aftermarket filters in the past, but they were very restrictive. Save some money over the Blueair mfg stock.

Great filter for Blueair 6000

We live in an industrial part of East Oakland, the air here isn't great. I have 2 BlueAir 601 units that help tremendously.The Pureburg filters have been great... zero issues, similar construction to OEM and no noticeable difference in performance at a lower price.I keep coming back.

I’m not sure why the filters sound like maracas (not in the unit, just when you move them around like taking them out of the box), but they fit in my purifier and seem to be working.

Fits my Bluair 601 perfectlyGood air flowGood priceWill continue to buyRecommended

Blue Air threatens that if you use any filters but their own, your warranty will be voided. Blackmail! I noticed somebody else left a review saying the filters plugged more quickly than the Blue Airs. To me, that tells me they're doing a better job. With a resident cigar smoker here, we go through filters relatively quickly. At over $170, I think we let them get totally nasty and inefficient before we ordered more. We were simply blown over when we looked at Amazon and found this set for less than a third of what we'd been paying for 3-4 years. Plus, we had them on the front porch in three days! My husband was certain they were going to be "too good to be true." We were both delighted to prove him wrong. Exactly the same, in look and function.

Looks normal and fits fine, but the filters stink like noxious chemicals. The smell filled my house, gave everyone headaches, and made my 5 year start vomiting. I have half a mind to sue.

They work great