Blueair Blue Max 511i Max Air Purifier - Grey

The Blueair app's RealTrack system will accurately monitor filter life based on your usage and local air quality, typically indicating replacement is needed every 6 to 9 months.

Yes, the Blue 511i Max is designed to purify large spaces, effectively cleaning up to 86 m² over 60 minutes. For optimal results in very large or open-plan areas, consider placement and fan speed.

HEPASilent™ is Blueair's proprietary dual filtration technology that combines electrostatic and mechanical filtration. It allows the purifier to use less energy and operate more quietly while achieving high particle capture rates.

Yes, the Blue 511i Max features a compact, rounded design with no sharp edges, making it safe for placement in children's bedrooms or play areas.

No, the air purifier can be operated manually using the two buttons on the unit for basic functions. However, Wi-Fi is required to access advanced features like app control, scheduling, and air quality monitoring.

Night mode dims the display lights and often reduces fan speed to the lowest setting, which is around 19 dB, ensuring a very quiet environment for sleep.

Yes, the integrated carbon filter is designed to capture common household odors, including those from smoke, cooking, and pets.

Ensure the power cord is securely plugged into both the unit and a working electrical outlet. Check if the filter is correctly installed.

Check if the filter needs replacement. Ensure the unit has adequate clearance around it for proper airflow. Verify that the unit is set to an appropriate fan speed or in Auto mode.

Ensure the filters are correctly installed and that no foreign objects are inside the unit. If the noise persists, contact customer support.

Verify your Wi-Fi network is stable and operating on a 2.4 GHz band. Restart your router, the air purifier, and the Blueair app. Ensure your app is updated to the latest version.

Ensure location services are enabled for the Blueair app on your smartphone. Check that the purifier is connected to Wi-Fi and your phone is within range. Re-calibrate the geofencing settings in the app if necessary.