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Blue Signature™ Large Replacement Filter
Blue Signature™ Large Replacement Filter
Blue Signature™ Large Replacement Filter
Blue Signature™ Large Replacement Filter
Blue Signature™ Large Replacement Filter
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Blue Signature™ Large Replacement Filter
Blue Signature™ Large Replacement Filter
Blue Signature™ Large Replacement Filter
Blue Signature™ Large Replacement Filter
Blue Signature™ Large Replacement Filter
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Blue Signature™ Large Replacement Filter

Compatible with Blue Signature™ Large Air Purifier

4.2
Rated 4.2 out of 5 stars
19 Reviews
Use code FILTER15 for 15% off
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This filter is only compatible with the Blue Signature™

  • 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

  • Alerts when you need a new filter
  • RealTrack Technology® filter monitoring
  • Double* the
filter lifetime

Smart filtration, you can trust

7 stages of filtration,
Advanced odour removal


HEPASilent filtration technology captures at least 99.97%² of tiny airborne pollutants down to 0.1 microns while OdourFence Technology captures common odour gases and breaks them down. It’s deep, effortless clean air you can feel, and smell, every day.

  • Ship next day free

  • 30 day home trial

  • Authenticity guaranteed

4.2
Rated 4.2 out of 5 stars
Based on 19 reviews
Total 5 star reviews: 13 Total 4 star reviews: 0 Total 3 star reviews: 4 Total 2 star reviews: 0 Total 1 star reviews: 2
68%would recommend this product
19 reviews
  • MG
    Michael G.
    Verified Buyer
    1 month ago
    Rated 1 out of 5 stars
    Terrible S&H

    I’m sure this is another one of those companies that’s trying to reduce packaging material and consequently, their environmental footprint. That all sounds well and good.. They sent the filter in its product box, a very thin cardboard material with no taping on any of the seams, just as if someone pulled the box off of a shelf on a retail store and slapped a mailing label on it. The box was all banged up like people have been playing football with it and it caused dents and impressions on the accordion style filter material. Just put the darn thing in a reasonable sized cardboard box,

    shipping it to your customers in a safe, solid and secure manner..

    BU Profile picture for Blueair UK
    Blueair UK
    1 month ago

    We’re sorry to hear about your experience with the Blue Signature Replacement Filter shipment. Your feedback on packaging and delivery condition is important, and we understand how disappointing this must have been. We’ll be sharing this with our team as we continue improving how products are protected in transit. If the filter performance seems affected, please don’t hesitate to reach out to our support team. We’re here to help.

  • KB
    Kathleen B.
    Verified Buyer
    23 hours ago
    Rated 5 out of 5 stars
    Love Blue Signature

    Easy to set up and use. After a week truly feel the difference in our home. Bonus, it’s beautifully designed serving as an end table in the living room.

  • RA
    Ralph A.
    Verified Buyer
    1 week ago
    Rated 1 out of 5 stars
    I’m having a lot of trouble with my purifier

    First, it will not let me connect to Wi-Fi. I moved homes and in my new house I just cannot connect. I’m doing everything the instructions say. Can you give me a number? I can call so I can speak to someone

    BU Profile picture for Blueair UK
    Blueair UK
    6 days ago

    Thank you for sharing your experience. We’re sorry to hear you’re having trouble connecting to Wi‑Fi after moving. The unit is designed for simple, consistent setup and should not cause any hassle. Our support team will be happy to assist you and work with you to resolve the issue.

  • ED
    Eileen D.
    Verified Buyer
    1 week ago
    Rated 5 out of 5 stars
    Does a great job!

    I bought the air purifier specifically to deal with smoke from Southern California brush fires. Fortunately, we have not had any fires locally since the purchase. But it does a good job if my husband overheats the olive oil while cooking.

  • EM
    Emily M.
    Verified Buyer
    3 weeks ago
    Rated 5 out of 5 stars
    Love it!

    Exactly what I wanted. Works wonderfully and looks snazzy

² Tested on PM2.5 up to 90 minutes.