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  • QuestionWhat is the recommended room size for this air purifier?

    • Answer This air purifier is recommended for rooms up to 635 square feet.
    This question and answer was generated by AI based on customer and product data.
  • QuestionHow long does it take for this air purifier to clean a 1,524 square foot room?

    • Answer On high, this air purifier can clean a 1,524 square foot room in 30 minutes.
    This question and answer was generated by AI based on customer and product data.
  • QuestionCan I control this air purifier with an app?

    • Answer Yes, this is a smart air purifier that can be controlled with an app.
    This question and answer was generated by AI based on customer and product data.
  • QuestionWhat is the CADR rating of this air purifier?

    • Answer The Clean Air Delivery Rate (CADR) of this air purifier is 410 cubic feet per minute.
    This question and answer was generated by AI based on customer and product data.
  • QuestionWhy is this air purifier quieter than others?

    • Answer This air purifier utilizes HEPASilent dual filtration technology, which is quieter and more energy-efficient than traditional HEPA filtration.
    This question and answer was generated by AI based on customer and product data.
  • QuestionDoes this air purifier have a filter indicator light?

    • Answer Yes, this air purifier has a filter indicator light to let you know when it's time to replace the filter.
    This question and answer was generated by AI based on customer and product data.
  • Questionwhat is the proper replacement filter for this machine?

    Asked by hello.

    • Answer I have this one, and it's predecessor. One thing I love about them both is that they come a part into several washable pieces. The outside cover (1st stage filter) goes into the washer (cold water) The base can go into the dishwasher. Take the big filter outside vacuum it and blow it out with a compressor. It becomes quite clean and reusable. I have had the original filter on my previous unit for 3 years. I have 3 very furry medium sized dogs. And it still cleans the air nicely and prevents the allergies in the house from flaring up.

      Answered by FreeWill

  • QuestionI have this in my cart to purchase based on consumer reports tests, but reviews say there's a chemical odor. Before i buy this, please tell me what is causing this as one reviewer said it was on overnight and odor remained. Thanks.

    Asked by Sheryl.

    • Answer I just got mine and there is no smell I detected from the filter or unit. It has been an absolute great buy.

      Answered by Jacob

  • QuestionDoes this have ions or ozone.

    Asked by Anonymous.

    • Answer Thank you for your interest in Blueair! Our HEPASilent™ technology combines mechanical and electrostatic filtration to capture and remove indoor air pollutants. It uses an ionizer to electrostatically charge particles at 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

      Answered by Blueair Support Team

  • QuestionDoes it remove cat litter box odors?

    Asked by Mima.

    • Answer I would guve it a fair rating for litter box and cat smells, I would recommend austin air health mate+ or bedroom machine since those have 15 pounds of carbon and are excellent at removing cat and lot of other smells.

      Answered by 123w

  • QuestionHow hard is it to clean and appropriately how often do you need to clean it?

    Asked by Kay.

    • Answer Thank you for your interest in Blueair! The Blue Pure 211i Max has a washable pre-filter that captures larger particles such as dust and pet hair, extending the life of your main filter. We recommend vacuuming and machine washing it as needed. The main filter includes a smart replacement indicator that lights up red when it’s time to change. Our RealTrack algorithm also calculates filter life based on usage, fan speed, and air quality. For 24/7 use, we suggest replacing the filter every 6-9 months. You can also use the Blueair app for notifications* and easy reordering of replacements.

      Answered by Blueair Support Team

  • QuestionHow many watts of power does it use

    Asked by Al.

    • Answer Blue Pure Max air purifiers are some of the few air purifiers that meet the highest standard of the Energy Star Most Efficient program. The Blue Pure 211i Max energy consumption is 46 Watts.

      Answered by Blueair Support Team

  • QuestionDoes it work without connecting to wifi?

    Asked by JustSoGal.

    • Answer Yes, works as a stand alone unit just using the top display controls.

      Answered by DavidS

  • QuestionLove my 211 air filter. Actually just changed the HEPA filter and trying to figure out how to turn off the red double hashtag light next to the on/off button. How do I reset it?

    Asked by Mikesuz.

    • Answer Thank you for your feedback and for reaching out with your question! After replacing your filter, you can reset the filter light indicator by pressing and holding the fan speed button for about 15 seconds, until all the LEDs on the control panel light up. Once they do, release the button—the red filter light should turn off. For a step-by-step tutorial, feel free to visit: 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?srsltid=AfmBOorobjLwcL95GrzZtuIbZ7MYBmP3jA8vp4LHoT9TvvarSAjSIZbF

      Answered by Blueair Support Team

  • QuestionDoes this eliminate cigarette smoke odors?

    Asked by Ro.

    • Answer Thank you for your interest in Blueair! The Blue Pure 211i Max air purifier is designed to remove 99.97% of airborne particles, including smoke particles. The filter also features an activated carbon layer that helps trap light household odors, such as those from pets, cooking, and smoke. If you have any questions, we’d love to hear from you! Please feel free to reach out to us here: https://www.blueair.com/us/contact-us-page.html.

      Answered by Blueair Support Team

  • QuestionI am looking for an air purifier for my cellar. I get confused when I read that the purifier is for 635 sq ft (a large room) but then I further read that it cleans up to 3,048 sq ft space. What is it?

    Asked by Drummer.

    • Answer Thank you for your interest in Blueair! The Blue Pure 211i Max air purifier quickly cleans 635 ft² in 12.5 minutes, or 1,500 ft² in 30 minutes, & 3,000 ft² in 1 hour.

      Answered by Blueair Support Team

  • QuestionDoes it remove formaldehyde or toxic chemicals from newly painted walls or houses? If not, what model should be recommended for that?

    Asked by D.

    • Answer Thank you for your interest in Blueair. Our Blue Pure Max air purifiers are independently tested to remove gases and odors and tested to remove TVOC, toluente sulfure, dioxide, Nox. Deodorization tested on Ammonia, Acetaldehyde, Acetic acid. The filter is enriched with activated coconut carbon so that your cooking, cleaning, and pets won't encroach on the comfort of your home.

      Answered by Blueair Support Team

  • QuestionWhere is serial number located?

    Asked by Pb.

    • Answer The serial number is located on a label on the inner side of the motor unit. To remove motor unit, turn top slightly counterclockwise and lift off of the gray base.

      Answered by DennisB

  • QuestionIs the top of the machines light supposed to be red?

    Asked by Anonymous.

    • Answer No, that is not supposed to happen. Haven’t experienced it on this unit but it happened on a previous model. Look up the red light reset on YouTube.

      Answered by Derpderp

  • QuestionMy new neighbor cooks Indian food every day and the smell is horrendous. It comes into my townhouse through the vents and walls. Will this air purifier remove the horrible smells from their cooking?

    Asked by Smellyneighbor.

    • Answer Thank you for your interest in Blueair! The Blue Pure 211i Max air purifier is designed to effectively clean the air in spaces up to 635 ft² in about 12.5 minutes, or up to 1,524 ft² in 30 minutes. The Particle + Activated Carbon filter is specifically designed to trap light household odors from cooking, smoke, pets, and more. For best results, we recommend placing the purifier in the room where odors are most noticeable and within the recommended square footage for optimal performance. We hope this information is helpful, and please let us know if you have any additional questions!

      Answered by Blueair Support Team