Style it your way

Scandinavian-inspired colors to easily change the look of your device & make it feel more at home in your space.

Wash, reuse, repeat

The fabric pre-filter is machine washable and reusable, so you can keep it fresh without routinely replacing it

Blue Signature™ Small Pre-Filter

Refresh the look of your air purifier while helping capture dust, hair and pet dander before they reach the main filter.

Compatible with Blue Signature™ Small Air Purifier

Desigend for

Blue Signature™ Medium

Great for

Dust, pet hair, easy upkeep & personalizing your space

Nordic Fog

Size: Small

Free & fast shipping
30 day home trial
Free extended warranty

Why you’ll love it

A functional layer that helps catch everyday mess while giving your purifier a fresh new look.

Captures dust, hair & pet dander
Helps protect the main filter from larger particles
Choose from variety of Scandinavian colors
Machine washable for easy care
Swaps on and off in seconds No routine replacement needed

Scandinavian inspired color options
Machine washable
Captures dust & hair
Reusable design

Features & Technologies

Captures dust, hair, & pet dander before it reaches the main filter
Choose from 6 colors that blend effortlessly into your home
Inspired by Scandinavian nature and interior palettes
Machine-washable effortless maintenance
Device sold separately

Style it your way

Scandinavian-inspired colors to easily change the look of your device & make it feel more at home in your space.

Wash, reuse, repeat

The fabric pre-filter is machine washable and reusable, so you can keep it fresh without routinely replacing it

Style it your way

Choose from 6 Scandinavian inspired colors

Our curated palette of hues blend soft neutrals with muted nature tones—perfect for creating a calm, contemporary atmosphere in any room.
Change up the look in seconds

Lift the pre-filter off the top of your device, then pull down the fresh one.
Machine washable for easy care

Machine wash on a gentle cycle, then let it air dry - fresh and ready to use again.

Proud to be a Certified B Corp

As a B Corp, we’re part of a global community of businesses that meet high standards of social and environmental impact.

Only compatible with Blue Signature™

Check the label inside your device to confirm your model before selecting.

FAQ

Are the Blueair fabric pre-filters included with the purifier?

Each Blue Signature™ model comes with one pre-filter in its standard color. Additional colors are sold separately.

Does cleaning the pre-filter affect air purification performance?

Can I machine wash my pre-filter?

¹ Based on high-speed CADR by volume vs. similar competitive models

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