The PM readings are different from my other Blueair air purifiers or air monitors

What are the possible reasons?

  1. Small deviations between the sensors’ readings is normal because PM sensors in Blueair air purifiers use different measurement technology depending on the model

  2. ​Large differences between sensor readings may happen if the sensors are clogged with dust

Try to vacuum the sensor from the outside. The PM values should decrease shortly after the vacuuming.

If the issue remains: Contact the Blueair Customer Support