Blueair Blue Pure 211i Max
#6 in Large roomsFull review
A large-room purifier with very high certified CADR and low running costs, for open-plan living areas.
Amazon $349$349
The Blueair Blue Pure 211i Max is the better air purifier overall, rated 3.7 to 2.9. The Blueair Blue Pure 211i Max leads on quiet, value and filter cost. The Blueair Blue Pure 211i Max costs $245.99 less ($349 vs $594.99).
Medify MA-112
#14 in Large roomsFull review
A very high-CADR purifier for large open spaces, with high filter costs to match.
Amazon $594.99$594.99
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Blueair Blue Pure 211i Max for quiet (53 dB at top speed (maker rating) vs 70 dB at top speed (maker rating)), value ($0.80 per cfm of smoke CADR vs $1.06 per cfm of smoke CADR) and filter cost ($139.98 a year in filters vs $277.98 a year in filters).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large rooms air purifier; a clear win is highlighted. How we rank explains each one.
| Factor weight | Blueair Blue Pure 211i Max | Medify MA-112 |
|---|---|---|
| Overall rating | 3.7/5 | 2.9/5 |
| Value 25% | 70 $0.80 per cfm of smoke CADR | 47 $1.06 per cfm of smoke CADR |
| Filter cost 20% | 68 $139.98 a year in filters | 44 $277.98 a year in filters |
| Quiet 20% | 47 53 dB at top speed (maker rating) | 0 70 dB at top speed (maker rating) |
| Efficiency 15% | 88 9 cfm per watt | 50 efficiency not certified (neutral score used) |
| Auto mode 10% | 100 particle sensor and Wi-Fi app | 70 particle (dust sensor) sensor, auto mode |
| Warranty 10% | 0 1-year warranty | 50 warranty not published (neutral score used) |
Specifications
| Blueair Blue Pure 211i Max | Medify MA-112 | |
|---|---|---|
| Performance | ||
| Smoke CADR | 435 cfm | 561 cfm |
| Dust CADR | 453 cfm | 587 cfm |
| Pollen CADR | 450 cfm | 450 cfm |
| PM2.5 CADR | 444 cfm | 574 cfm |
| CADR certified by | AHAM Verifide | AHAM Verifide |
| Room size (AHAM) | 674 sq ft | 869 sq ft |
| Coverage (maker) | 3,235 sq ft | 4,455 sq ft |
| Noise | 23 to 53 dB | 70 dB |
| Efficiency | ||
| Efficiency (IEF) | 9 cfm/W | - |
| ENERGY STAR | Yes | No |
| Energy use | 256 kWh/year | - |
| Filters | ||
| Filter | HEPASilent particle filter with washable fabric pre-filter | Dual H13 HEPA 3-in-1 (pre-filter, carbon, HEPA) |
| Activated carbon | - | Yes |
| Replacement | F2MAX (110039) | MA-112 replacement filter set |
| Replacement cost | $69.99 every 6 months | $138.99 every 6 months |
| Yearly filter cost | $139.98/year | $277.98/year |
| Ionizer | - | Yes, can be switched off |
| CARB certified (ozone) | Yes | Yes |
| Controls and build | ||
| Air-quality sensor | particle | particle (dust sensor) |
| Auto mode | Yes | Yes |
| Wi-Fi app | Yes | No |
| Fan speeds | 5 | 4 |
| Dimensions | 22.7 x 14.4 x 14.4 in | 28 x 16 x 15 in |
| Weight | 16.2 lb | 32 lb |
| Warranty | 1 years | - |