Blueair Signature SP4i Replacement Filter

Blueair Signature SP4i Replacement Filter

The Blueair Signature SP4i Replacement Filter is designed exclusively for the Blue Signature™ air purifier, ensuring a precise fit and reliable performance. Engineered for easy replacement, it allows for hassle-free maintenance so you can continue enjoying clean air without interruption.

Crafted with durable materials, this long-lasting filter is built for consistent everyday use. It effectively captures common airborne allergens such as dust, pollen, and pet dander, supporting a cleaner indoor environment.

Featuring 7 stages of filtration and 10× more odor removal, the filter uses HEPASilent™ filtration technology to capture at least 99.97% of airborne pollutants down to 0.1 microns. Combined with OdorFence™ Technology, it captures common odor gases and breaks them down, delivering deep, effortless clean air you can both feel and smell every day.

The filter also supports accurate filter lifetime tracking through Blueair’s proprietary RealTrack™ algorithm, which calculates remaining filter life based on fan speed, usage time, and pollution levels.

As a genuine Blueair filter, it meets Blueair’s highest quality standards to ensure authentic performance and dependable air purification.