Blue Signature™ Replacement Filter

Blue Signature™ Replacement Filter

Compatible with Blue Signature™ Air Purifier

$40.00 USD$99.99 USD
Blue Signature™ Large Replacement Filter

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

  • How to find your model

    Unlock your phone & tap & hold it to the sticker on the cage of your device. It automatically direct you to the compatible filter.

  • Accurate filter lifetime tracking

    Blueair’s proprietary RealTrack algorithm accurately calculates the remaining filter lifetime based on fan speed, usage time and pollution levels.

7 stages of filtration,
10x more odor removal


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

² Tested on PM2.5 up to 90 minutes.