Blueair
Blueair Blue Pure 211i Max
$349.99Cheaper
Released 2022
Best Air Purifiers · head-to-head
Blueair Blue Pure 211i Max vs Rabbit Air BioGS 2.0
A sourced, side-by-side comparison. Blueair Blue Pure 211i Max is cheaper at $349.99. Every spec and price links to its source.
Rabbit Air
Rabbit Air BioGS 2.0
$369.95
Released 2017
Which is better: the Blueair Blue Pure 211i Max or Rabbit Air BioGS 2.0?
The Blueair Blue Pure 211i Max wins 1 of the 1 specs we compare head to head; the other wins 0. The Blueair Blue Pure 211i Max is the cheaper at $349.99. The Blueair Blue Pure 211i Max both leads on specs and costs less — the straightforward pick.
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Key specs, head to head
The numbers that decide it, drawn to scale — longer bar wins, the accent bar is the stronger figure.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Blueair Blue Pure 211i Max | Rabbit Air BioGS 2.0 |
|---|---|---|
| US price | $349.99 | $369.95 |
| Brand | Blueair | Rabbit Air |
| Released | 2022 | 2017 |
| Cadr smoke (CFM) | 443 | 136 |
| Coverage (sq ft) | 674 | 550 |
| Hepa | Yes | Yes |
| Filter type | HEPASilent dual filtration (mechanical + electrostatic) + Activated Carbon, 4-layer | Pre-filter + BioGS HEPA + Dual Hive AC Charcoal + Negative Ion Generator (4-stage) |
| Noise db min | 23 | 22.8 |
| Smart | Yes | No |
| Energy star | Yes | No |
| Release | 2022 | 2017 |
Sources — Blueair Blue Pure 211i Max: blueair.com (verified 2026-06-15). Rabbit Air BioGS 2.0: rabbitair.com (verified 2026-06-15).
What's the difference between the Blueair Blue Pure 211i Max and Rabbit Air BioGS 2.0?
Where the two actually differ on the specs we track (6 of 7). Matching specs are omitted.
- Cadr smoke (CFM): Blueair Blue Pure 211i Max 443 vs Rabbit Air BioGS 2.0 136
- Coverage (sq ft): Blueair Blue Pure 211i Max 674 vs Rabbit Air BioGS 2.0 550
- Filter type: Blueair Blue Pure 211i Max HEPASilent dual filtration (mechanical + electrostatic) + Activated Carbon, 4-layer vs Rabbit Air BioGS 2.0 Pre-filter + BioGS HEPA + Dual Hive AC Charcoal + Negative Ion Generator (4-stage)
- Noise db min: Blueair Blue Pure 211i Max 23 vs Rabbit Air BioGS 2.0 22.8
- Smart: Blueair Blue Pure 211i Max true vs Rabbit Air BioGS 2.0 false
- Energy star: Blueair Blue Pure 211i Max true vs Rabbit Air BioGS 2.0 false
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Blueair Blue Pure 211i Max
Only one whitelisted tester, Wirecutter, published hands-on measured results for this exact model, naming it their large-room upgrade pick. Wirecutter found it a stellar, quiet, energy-efficient large-room performer (>99.9% smoke reduction), with a durability caveat on the washable fabric cover. (1 sourced review, 1 lab-tested.)
Praised: Stellar large-room particle/smoke reduction (>99.9% in the 30-minute test); Very quiet for its power (<=41 dBA on its four lower speeds); Energy efficient (41 W max; 11-18 W in normal everyday use).
Flagged: Fabric cover looks shaggy over time and lost elasticity after a few washes, needing replacement; Shorter filter replacement cycle (6-9 months vs a typical year); Relatively high price and overkill for small-to-medium rooms.
Rabbit Air BioGS 2.0
Only one whitelisted tester, Tom's Guide, hands-on reviewed this exact model. It calls the BioGS 2.0 a quiet, inexpensive purifier that cleans a mid-sized room well, but flags weak airflow and the absence of WiFi or an app. Consensus rests on a single source. (1 sourced review, 1 lab-tested.)
Praised: Quiet operation — peak wind noise measured at 56 dBA, far below noisier rivals; Inexpensive at $369, roughly half the price of comparable purifiers; Simple to operate with a remote control and a fast-reacting auto mode.
Flagged: Low airflow that pales next to the best in its class; No WiFi, app, or Alexa/Google Home integration; Lacks a tip-over safety switch.