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Blue Pure 311 Auto Series Allergenblock Filter
Blue Pure 311 Auto Series Allergenblock Filter
Blue Pure 311 Auto Series Allergenblock Filter
Blue Pure 311 Auto Series Allergenblock Filter
Blue Pure 311 Auto Series Allergenblock Filter
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Blue Pure 311 Auto Series Allergenblock Filter
Blue Pure 311 Auto Series Allergenblock Filter
Blue Pure 311 Auto Series Allergenblock Filter
Blue Pure 311 Auto Series Allergenblock Filter
Blue Pure 311 Auto Series Allergenblock Filter
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Blue Pure 311 Auto Series Filter

AllergenBlock

Compatible with Blue Pure 311 Auto

3.3
Rated 3.3 out of 5 stars
3.3 Stars (7 Reviews)
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Everyday filter, tackling 99.97%¹ of dust, odors, allergens, smoke, & more.
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This filter is only compatible with the Blue Pure 311 Auto Air Purifier

  • Designed for easy replacements, ensuring hassle-free maintenance for continuous clean air
  • Crafted with durable materials for a long-lasting filter
  • Effectively captures allergens like dust, pollen, and pet dander

Smart filtration, you can trust

Main filter

Captures airborne particles, including pollen, dust & pet dander allergen

AllergenBlock Defense Coating

Neutralizes over 90% of allergen properties that trigger discomfort

Activated carbon

Traps light household odors

Meet our filters

  • Particle & Carbon

    Our original filter. Removes allergens and traps light household odors from pets, cooking and smoke

  • SmokeBlock

    2x more activated carbon than our original filter. Removes up to 99.99%³ of wildfire smoke

  • AllergenBlock⁵

    Extra protection against allergens. Traps and neutralizes dust, pollen and pet dander

FAQ

A red filter replacement indicator appears on the air purifier when it is time to change filter, after about 6 months of operation.


After you replace your filter, press the center button down to reset the filter light indicator until the red light disappears. It usually takes 7-10 seconds and may take up to 30 seconds depending on the model. 

3.3
Rated 3.3 out of 5 stars
Based on 7 reviews
Total 5 star reviews: 4 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 3
57%would recommend this product
7 reviews
  • BP
    Blue P. 2.
    2 months ago
    Rated 5 out of 5 stars
    Fabulous!

    I’m very happy with the air purifier in the filters! It’s made a huge difference in my home. Website ordering is not as easy as it could be when I need to make a change or a special order, but when I call, customer care is amazing!

  • LD
    Linda D.
    7 months ago
    Rated 5 out of 5 stars
    Happy to have less allergy issues!

    I wasn’t sure how well an air purifier would work. I made my purchase for use in my bedroom with hopes of reducing my allergies issues. My Blue Pure 311 is terrific! My concerns about the noise of the device have be alleviated because there is only a very faint hum - like minimal white noise. I sneeze and cough noticeably less in the morning - hurray! The auto setting speeds up every morning when I shake out my bedding and make my bed. Clearly, it picks up on the movement of extra dust particles in the bedroom. I’ve also noticed that dust doesn’t accumulate as quickly on my bedroom furniture as it had prior to my use of the Blue Air 311. I recently placed an online order for a replacement filter; the package arrived quickly. The unit was easy to take apart and the very dusty pre-filter washed up beautifully.

  • K
    KEMeyer
    9 months ago
    Rated 5 out of 5 stars
    Works like a charm!

    We've been using the Blueair 311 Auto Air Purifier in our bedroom for 3 1/2 years, and it does a great job of keeping the air fresh. Auto mode keeps it so quiet that we wouldn't know it's running if not for the blue LED light on the side... except for when volatile organic compounds (e.g. hairspray, lidocaine spray, etc.) are detected. Then it kicks into high speed until they care cleared from the air.

  • D
    Disneymom2
    1 year ago
    Rated 5 out of 5 stars
    These filters really help.

    I ordered this filter to use in my living room/kitchen open area. It kicks into high gear when we are cooking and removes odors quickly. Most of the family has allergies and this has really helped us breathe better and noticeably lessen the allergy symptoms. It is super quiet. I often check it to make sure it is still on. Only loud when turned on high or works to reduce odors when cooking. Highly recommend.

  • IM
    Ian M.
    5 months ago
    Rated 1 out of 5 stars
    Fan broke

    Couldnt use filter because fan broke in the main unit. Was able to return filter.

    B Profile picture for Blueair
    Blueair
    5 months ago

    Thank you for sharing your experience. We’re sorry to hear about the issue with your Blue Pure 311 Auto unit and understand how frustrating that must have been. We're glad you were able to return the filter, and we have reached out to you directly to help troubleshoot your 311 Auto unit.,Blueair,Blueair Team,clientresponse

¹ Tested on PM 2.5 up to 90 mins

² Based on ELISA deactivation testing of Pollen (Cry J1), Pet Dander (Fel d1, Can F1), Dust Mite Matter (Der f1) on the filter media in 60 minutes.

³ Compared to standard in-unit filter. Based on removal testing of particles 0.4-0.7 μm in 60min in a 30m3 room. Performance may vary. Odors: Tested on benzene, toluene, nitrogen oxide, sulfur dioxide in 30 min.

⁵ AllergenBlock refers to inanimate allergens pollen, dust and pet dander