- Make sure the unit is turned off and unplugged. With the front of the unit facing forward, pull the lid towards you at the upper end as shown and remove the front cover.
- Vacuum your pre-filter monthly or sooner if there is more build-up.
- After you've vacuumed your pre-filter simply place it back in your AirDoctor 3000.
- NOTE: Never wash your Carbon/VOC Filter or UltraHEPA Filter
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