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Blueair
Blueair Blue Signature

Blueair Blue Signature

Best price now

$169.99at eBayObserved at 5:39 AM

43% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Our take on the Blueair Blue Signature

The Blueair Blue Signature is a compact HEPA air purifier rated for rooms up to 498 square feet, with a CADR of 315 and an odor-absorbing filter stage. It works with Amazon Alexa and Google Assistant for voice control. Its best new price is $169.99 at eBay as of November 6, 2026, the lowest of the three stores listing it new.

Best forBedrooms and small living roomsAllergy and pet householdsSmart-home users with Alexa or GoogleBuyers wanting a simple HEPA purifier
Pros
  • HEPA filtration plus an odor-absorbing stage
  • 315 CADR is solid for a unit this size
  • Covers up to 498 square feet
  • Works with Amazon Alexa and Google Assistant
  • Simple, low-maintenance design
Cons
  • One filter handles both particles and odors, so it needs replacing more often
  • No air-quality sensor or auto mode on this model
  • Voice control needs a compatible smart speaker
  • Fan noise rises at higher speeds

Blueair Blue Signature prices at every store

  • eBayNew

    In stockSold by crabwarehouse

    $169.99+ $25.99 shippingObserved at 5:39 AM
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  • Abt Electronics & AppliancesNew

    In stock

    $299.99Free shippingObserved at 5:39 AM
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  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $299.99Free shippingObserved at 5:39 AM
    Visit store

Blueair Blue Signature price history

Lowest price we've seen: $169.99 on Nov 6 at eBay. Tracked across 3 stores since Nov 6.

What reviewers say

Owners generally rate the Blue Signature as an easy, quiet-enough purifier for bedrooms and small rooms. Most praise its simple setup and cleaner air, while some note the filter cost and limited smart features.

What people mention
  • FiltrationPraisedOwners report less dust and fewer allergy symptoms in treated rooms.
  • NoiseMixedIt is quiet on low, but noticeable on high.
  • Filter costCriticisedSome owners say replacement filters are pricey and needed often.
  • SetupPraisedBuyers describe unboxing and first use as quick and simple.
  • Smart featuresMixedVoice control works, but there is no auto mode or air-quality readout.

Specifications

HEPA Filter
Yes
Odor Absorbing
Yes
Finish
Blue
Assistant Support
Google Assistant, Amazon Alexa
Coverage Area
498 square feet
CADR Rating
315 CADR

Questions and answers

What size room does the Blue Signature handle?
Blueair rates it for rooms up to 498 square feet, with a CADR of 315. That suits a bedroom, office or small living room.
Does it work with Alexa and Google Assistant?
Yes. It supports both Amazon Alexa and Google Assistant, so you can control it by voice through a compatible speaker or display.
Does it remove odors?
Yes. It has an odor-absorbing filter stage in addition to the HEPA filter, which helps with cooking and pet smells.
How often do filters need changing?
Blueair recommends replacing the filter roughly every six months, sooner in smoky or high-pollen homes. The unit does not have an air-quality sensor to estimate filter life.
Is $169.99 a good price?
It is the lowest of the three stores listing it new as of November 6, 2026, at eBay. Check the price history on this page to see how it compares with recent months.
What is in the box?
The purifier ships with its filter installed and a power cord. No smart speaker is included, so voice control needs one you already own.
Where is the Blueair Blue Signature cheapest?
At eBay, for $169.99, 43% under what the other stores charge, as of our latest check.
Where can I buy the Blueair Blue Signature?
3 stores we checked sell it, including eBay, Abt Electronics & Appliances, Amazon.