How do I change the filters in the Blueair 400, 500, and 600 Series Air Purifiers?
First turn off your Blueair air purifier and disconnect the power cord from the electrical outlet. Firmly lift the lid off the top of the unit and remove the filter on top. Next, remove the filters from each side and vacuum the inside grille. Guide the first and second new filters into their appropriate slots. Make sure that the black side or the side marked “out” is facing outwards. Place the third filter on top of the unit and ensure that the black side or side marked “out” is facing upwards. Lastly, put the lid back onto the unit by snapping it in place. Re-plug your unit into the electrical outlet and turn it on.
