Breathe easier with the Blueair Blue Pure 211i Max—our couple-tested pick for large rooms thanks to its HEPASilent filtration, 410 cfm CADR, quiet 23–53 dB operation, and smart app controls with Auto mode. It cleans up to 635 sq. ft. fast, uses a washable fabric pre-filter, and shows real-time air quality on a simple top display. See why it made our “Honestly Loved” list and check current pricing today.
If you’re trying to clear allergens, pet dander, smoke, and everyday odors in a large living space, the Blueair Blue Pure 211i Max delivers fast, quiet clean air with app controls and an intuitive top display; just know that replacement filters add to the ongoing cost and the unit is physically large. On high, it can clean up to 635 sq. ft. in about 12.5 minutes, with a CADR of 410 cfm, and it stays surprisingly quiet for its size. If you value simple controls, auto mode, and low noise, this is an easy pick for open-plan rooms or big bedrooms.
We wanted a purifier that could actually keep up with an open living room and kitchen where cooking odors, pet hair, and seasonal pollen collide. The 211i Max stood out for its high CADR (410 cfm) and the ability to fully cycle air in large spaces quickly, plus an app for scheduling and real-time air quality at a glance. The HEPASilent system promises mechanical plus electrostatic filtration, which helps explain why it runs cleanly without roaring. Compared with smaller units that struggled to make a dent during smoky days, this one moved the needle in minutes. Its simple two-button top with a clear AQI color ring also makes it easy for guests or kids to use.
Maintenance is simple: vacuum or wash the fabric pre-filter regularly and replace the main filter roughly every six months, depending on use and pollution levels. The app tracks filter life based on actual pollutant exposure and alerts when it’s time to swap, which helps avoid guesswork. Replacement filters aren’t the cheapest, so budgeting for ongoing costs is wise, but the pre-filter reduces wear on the main filter and can extend intervals if kept clean. The sound profile and performance held steady during extended use, which bodes well for long-term reliability.
Tips, tricks, and care
- Place the unit with at least a few inches of clearance around the sides and top for best airflow.
- Set auto mode for all-day use and schedule a nightly low setting for quiet sleep.
- Vacuum or wash the fabric pre-filter monthly to preserve the main filter and reduce operating cost.
- Use the app’s filter life tracking instead of a fixed calendar to time replacements accurately.
- Keep it within reasonable range of your Wi‑Fi router for reliable connectivity and updates.
If you want a purifier that quietly handles dust, pet dander, and everyday air grime without constant supervision, the Blueair 211+ Auto is worth the splurge. It’s a no-hassle, well-designed unit that simply works—and looks good doing it. The price does sting a bit, but the payoff in air clarity and peace of mind made it a keeper for us.