Is the Blueair 211i Max worth it?
Room air purifier · suggested up to 674 sq ft · Fabric
Blueair 211i Max on Amazon · $244.99 →Sold by Amazon.com. Affiliate link.
Yes, for a big room up to 674 sq ft. It cleans more smoke than the Levoit Core 600S for less money and less power. Budget about $93 a year for filters.
Blueair Blue Pure 211i Max review
The short answer
Yes. The Blue Pure 211i Max is a strong buy for a living room or open space up to 674 sq ft. AHAM certifies 435 CFM of smoke clearing on 44 watts, 11% more than the Levoit Core 600S (391), and it cost less on Amazon on October 13, 2026 ($244.99 vs $269.99). The catch is the filter: Blueair says it lasts up to 9 months, so plan on about $93 a year. For a bedroom under about 418 sq ft, a smaller purifier like the 311i Max or Winix T810 is enough.
- Blueair 211i Max on Amazon · $244.99 Sold by Amazon.com
- Genuine 211i Max filter · $69.99 Particle + carbon; Blueair says it lasts up to 9 months
- Blueair 311i Max · $169.99 For a bedroom up to 439 sq ft
Prices on Amazon on the review date; they change often. Affiliate links; we earn a commission at no cost to you.
At a glance
Who it's for
A living room, open kitchen or large bedroom up to about 674 sq ft.
The standout number
435 smoke CADR on 44 watts and ENERGY STAR. Running all day that is about $73 a year in power.
The catch
Filters: $69.99 each and up to 9 months of life, about $93 a year. It is also big: 16.2 lb.
The Verified Label — every AHAM-tested spec
ENERGY STAR listed
US market
Clean Air Delivery Rate (CADR) — source: AHAM
Coverage & power — source: AHAM (+ computed)
Filter & identity
How it ranks
Where this unit sits among the 235 room air purifiers we track, on the two numbers that decide one: how fast it clears fine smoke particles, and how big a room it covers. Percentiles are computed from our corpus (higher = better).
Smoke CADR
Better than 98%
of the 235 units with a published smoke CADR
Suggested room size
Better than 98%
of the 235 units with a published room size
The 211i Max vs two rivals on Amazon
Smoke CADR and room size are AHAM-certified. Quietest setting is the maker's own figure. Filter cost is the maker's genuine filter on Amazon at the longest life each maker states (Blueair up to 9 months, Levoit 6 to 12 months, Winix 12 months), so Blueair's real cost can run higher if you change it sooner. Power cost is running all day on the smoke-test speed at 18.83¢ per kWh. Two-year cost = Amazon price + filters you'd buy + two years of power. Amazon prices on October 13, 2026.
| Unit | Smoke CADR | Room (sq ft) | Quietest (dB) | Filter / yr | Power / yr | 2-year cost | Where |
|---|---|---|---|---|---|---|---|
| Blueair Blue Pure 211i MaxThis page | 435 | 674 | 23 | $93 | $73 | $530 | $244.99 on Amazon |
| Levoit Core 600SClosest rival in size | 391 | 606 | 26 | $60 | $108 | $546 | $269.99 on Amazon |
| Winix T810Smaller room, lower cost | 270 | 418 | 23.8 | $75 | $74 | $399 | $175.99 on Amazon |
The 211i Max beats the Core 600S on smoke CADR, price, power and two-year cost ($530 vs $546). The T810 costs less to own ($399) but is rated for 418 sq ft, not 674.
Sources: AHAM Verifide directory: Blueair 3613111100 (Blue Pure 211i Max), Levoit Core 600S, Winix T810 · Blueair: Blue Pure 211i Max product page · Levoit: Core 600S product page and filter page · Winix: T810 product page · Amazon listing: BLUEAIR Air Purifiers for Home Large Room up to 3,235 Ft², Blue 211i Max · Amazon listing: BLUEAIR Genuine Blue Pure 211i Max Air Purifier Replacement Filter · Amazon listing: Levoit Smart Air Purifiers for Home Large Room up to 2933 Ft², Core 600S-P · Amazon listing: WINIX T810 Air Purifier for Home Extra Large Room Up to 1968 Ft² in 1 Hr With Smart Wi-Fi,
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Frequently asked questions
Is the Blueair 211i Max worth it?
Yes for a room up to 674 sq ft. It certifies 435 smoke CADR on 44 W, more than the Levoit Core 600S for less money. Filters run about $93 a year.
Why does Amazon say 3,235 sq ft when you say 674?
They measure different things. 3,235 sq ft is a room the purifier can filter once an hour. AHAM's 674 sq ft is the room it cleans about 4.8 times an hour, the rate AHAM uses for smoke. That is 4.8 times smaller. Use the 674 figure to size it.
How often do you change the Blueair 211i Max filter?
Blueair says up to 9 months; the app tracks it. The genuine filter was $69.99 on Amazon on October 13, 2026. At 9 months that is about $93 a year; change it every 6 months and it is about $140.
Is the Blueair 211i Max a HEPA purifier?
Blueair calls its filter HEPASilent: a fabric filter plus an electric charge, not a True HEPA filter. AHAM lists it as a fabric filter. What matters for cleaning is the certified CADR, and the 211i Max's is high.
Blueair 211i Max vs Levoit Core 600S?
The 211i Max cleans more smoke (435 vs 391), uses less power (44 W vs 65.6 W) and cost less on October 13, 2026 ($244.99 vs $269.99). The Core 600S filter is cheaper per year ($60 vs $93), but over two years the 211i Max still costs less ($530 vs $546).
How loud is the Blueair 211i Max?
Blueair lists 23 dB on low and 53 dB on high. On high it is about as loud as a quiet conversation.
How big a room does the Blueair 3613111100 (Pure Blue 211i Max) cover?
AHAM suggests it for a room up to 674 square feet. That rating assumes it runs on high and cleans the air about 4.8 times an hour. For faster cleaning — say for wildfire smoke or allergies — size it to a smaller room than the maximum.
What is the CADR of the Blueair 3613111100 (Pure Blue 211i Max)?
Its AHAM Clean Air Delivery Rate is 453 for dust, 435 for smoke and 450 for pollen, with a PM2.5 CADR of 444. CADR is cubic feet of clean air delivered per minute — higher clears a room faster.
How much power does the Blueair 3613111100 (Pure Blue 211i Max) use?
About 44 watts on its smoke-clearing setting, which works out to 9.9 CADR per watt — a measure of how much clean air you get for the electricity it draws. It is ENERGY STAR certified.
Sources. Clean Air Delivery Rate (dust / smoke / pollen), PM2.5 CADR, suggested room size, ENERGY STAR status and power draw come from the AHAM Verifide air-cleaner directory (the industry's independent CADR test). Average CADR, clean-air-per-watt and the percentile figures are computed by Verified HVAC Data from those published ratings. We publish no star ratings and take no payment for placement. "Not published" means AHAM's record doesn't disclose it — we never fill a spec with a guess.
Blueair 211i Max on Amazon · $244.99 → See how it ranks against every purifier