This Blueair filter set 5210i/5240i makes your Blueair Blue 5210i/5240i air purifier work perfectly.

The filter set captures pollutants in the air down to 0,1 micron. The device contains with DustMagnet™ filter that adequately removes chemicals, hazardous organic compounds and light household odours from the air. The unique HEPASilent filter, combining electrostatic and mechanical techniques, kills germs and helps minimise airborne particles that can cause allergy symptoms, including pollen, dust, mould spores, pet dander, viruses, bacteria and fine smoke particles. It is recommended to change the filter between 6 and 12 months, depending on indoor conditions.

The filter change indicator tells you when it is time to replace the filter.