Blueair Pure 311i Max HEPA Air Purifier, 1858 sq. ft. Coverage, Smartphone App Control, Quiet, Energy Star Certified

A: Yes, I just bought one and I’m using it without the app or phone.

A: yes! My app offloaded itself a long time ago. This puifier works fine without a phone, there are buttons on top to operate it.

A: Thank you for your interest in Blueair! While the Blue Pure Max 311i Max air purifier id smart-enabled, it features an intuitive display with a simple two-button design for easy control of fan speeds (1-3), night mode, auto, brightness, and child lock. It also includes a clear 5-color AQI sensor to easily display your air quality levels.

A: Yes it's Blue. Think it's smell like ionizing.

A: Thank you for your interest in Blueiar! Our Blue Pure 311i Max with HEPASilent™ technology combines mechanical and electrostatic filtration to capture and remove indoor air pollutants. It uses an ionizer to electrostatically charge particles at a low current, boosting filter efficiency and achieving a quiet, energy-efficient Clean Air Delivery Rate (CADR). Blueair products meet CARB standards and are third-party certified to Intertek's Zero Ozone standards. Find out more on our website: https://www.blueair.com/us/air-purifiers-and-ozone.html

A: It looks like a Heather grey.

A: Thank you for your interest in Blueair! The Blue Pure 311i Max comes in the pre-filter color, Stockholm Fog.

A: It is very quiet. When it’s on the auto setting, I cannot hear it at all. If I turn up the fan to level 2 or 3 then it is noticeable but just sounds like a small fan.

A: Thank you for your interest in Blueair! he Blue Pure 311i Max is Quiet Mark certified, making it one of the quietest and least intrusive air purifiers available. Quiet Mark testing labs replicate real-life environments (rather than controlled lab settings) to evaluate both sound levels and sound quality, ensuring that the pitch of the sound is pleasant and unobtrusive. The Blue Pure 311i Max operates at 23 dB(A) on the lowest setting and is never louder than 50 dB(A).

A: Thank you for your inquiry! The red light on your Blue Pure 311i Max indicates that the air quality in the room is polluted. In response, the purifier's fan may increase speed if set to auto mode to help clean the air more effectively. Despite this, the Blue Pure 311i Max is Quiet Mark Certified and designed for whisper-quiet operation — running at just 23 dB on low and up to 50 dB on high. If the red light stays on continuously, we recommend cleaning the sensor inlets located at the back of the unit. You can also reset the light indicator by pressing and holding the fan speed button for about 15 seconds, until all LEDs on the interface light up. Once the filter light turns off, release the button. For more information, visit our website here: https://www.blueair.com/blogs/blue-pure-max/how-do-i-reset-the-red-light-filter-light-indicator-on-my-blue-pure-max-air-purifier?_pos=7&_sid=fba24864c&_ss=r

A: Thank you for your interest in Blueair! Our Blue Pure Max air purifiers remove 99.97% of airborne particles down to 0.1 microns and are equipped with an activated carbon filter to help reduce gases and odors, including VOCs. However, please note that the device sensor measures only PM2.5 levels. If you have additional questions, please don’t hesitate to contact us here:https://www.blueair.com/pages/contact-us

A: Thank you for your interest in Blueair! Yes, we recommend replacing your filter every 6 months when used 24 hours a day for optimal performance.

A: Thank you for your interest in Blueair! If you choose not to connect your 311i Max to the app, you can turn off the WiFi by long pressing the Fan Speed button for 5 seconds and then releasing it. The WiFi LED will stop blinking, indicating that the WiFi function is turned off.

A: Thanks for your interest in Blueair. The 311i Max and 311i+ Max differ in size, affecting the Clean Air Delivery rate based on your room size. The 311i Max quickly cleans 387 ft² in 12.5 minutes, 929 ft² in 30 minutes, & 1,800 ft² in 1 hour, while the 311i+ Max cleans 465 ft² in 12.5 minutes, 1,000 ft² in 30 minutes, & 2,000 ft² in 1 hour.

A: Thank you for your interest in Blueair!. Our Blue Pure 311i Max air purifier efficiently cleans a 387 ft² space in about 12.5 minutes, or up to 1,800 ft² in one hour on high speed, effectively reducing 99.97% of airborne particles, including mold.