Blueair Blue Signature SP4i Replacement Filter

Blueair Blue Signature Nordic Fog Air Purifier Replacement Filter

The Blueair Blue Signature Nordic Fog Air Purifier Replacement Filter is working in tandem with your compatible air purifier.

This helps keep the air in your home hygienic, odour-free, and well-circulated. Manufacturer recommends you replace the filter every 6 months when used 10 hours a day.

• PERFECT FIT: Patent-pending replacement filter designed and tested exclusively for the Blueair Blue Signature SP4i. Ensures a seamless fit and peak purifier performance with every change
• QUALITY FILTRATION: Captures 99.97%* of airborne particles as small as 0.1 microns, including pollen, dust, pet dander, and smoke—for cleaner, healthier air.
• IDEAL PERFORMANCE: HEPASilent dual filtration delivers faster, quieter, and more energy-efficient purification than standard HEPA filters. Maintain clean air without disruption.
• ODORS BLOCKED: OdorFence Technology uses bio-based enzymes and minerals to break down odors and gas molecules, removing up to 10x more odor.
• REAL-TIME FILTER PERFORMANCE: Powered by our proprietary RealTrack algorithm, which monitors actual usage and alerts you precisely when it’s time to replace. Now with up to 12 months of use—double* the filter life thanks to our patent-pending design.
• EASY MAINTENANCE: Built for everyday use with a quick-swap, patent-pending filter that’s easy to replace—no tools, no hassle. Designed to keep maintenance stress-free.

Model Compatibility: This filter is only compatible with the Blueair Blue Signature Nordic Fog Air Purifier

Specifications

Blueair was founded on the firm belief that freedom to breathe is a basic right. Over two decades ago, Blueair's Swedish founder set out to make the world's best air purifier. By bringing together a team of talented designers and filtration experts who shared his passion for sustainability, quality and design, the Blueair air purifier was born.

Today, Blueair's award-winning air purifiers which combine superior performance and low noise with timeless Scandinavian design, improve the health and well-being of people in over 60 countries around the world. Since 2016, Blueair is a proud member of the Unilever family of brands.