How to Clean and Replace Filters in Air Scrubbers

Quick answer

Replace the pre-filter every 1-3 months and the activated carbon filter every 6-12 months, cleaning the unit at each change to maintain peak performance.

Step-by-step filter cleaning and replacement

1. 1. Power down and unplug the air scrubber: Always disconnect the unit from the electrical outlet before opening the filter compartment. This prevents accidental startup and electrical shock.
2. 2. Remove and inspect the pre-filter: Open the front or side access panel. Slide out the pre-filter (the first stage). Hold it up to a light: if you cannot see light through it, or if it feels stiff and dusty, it needs replacement. A washable pre-filter can be rinsed with water; a disposable one must be replaced. Do not wash a disposable pre-filter. It will lose its filtration efficiency and may damage the motor.
3. 3. Clean the pre-filter (if washable) or replace it: For washable pre-filters, rinse under cool running water from the clean side out. Let it air dry completely before reinstalling. For disposable pre-filters, discard and install a new one like the B-Air AS-PF Stage 1 Pre Filter 5 pack. Never use soap or detergent on a pre-filter; it can leave residue that traps particles and reduces airflow.
4. 4. Remove and check the carbon filter: Behind the pre-filter, locate the activated carbon filter. It may be a separate frame or a combination filter. If it smells musty or the carbon granules appear dusty or clumped, replace it. The B-Air AS-CF Stage 3 Activated Carbon Filter 3 pack is a direct upgrade for the RA-650. Activated carbon filters cannot be cleaned; they must be replaced once saturated.
5. 5. Install the new carbon filter: Slide the new carbon filter into the slot with the arrow pointing in the direction of airflow (usually toward the blower). Ensure the gasket or foam seal is intact to prevent air bypass. If the filter does not fit snugly, air will leak around it, reducing filtration effectiveness.
6. 6. Reinstall the pre-filter and close the panel: Place the clean or new pre-filter back in its slot. Close and latch the access panel securely. Plug the unit back in and turn it on. Check for unusual noises or reduced airflow. Run the scrubber for 10 minutes and verify that the airflow feels strong. Weak airflow indicates a misaligned filter or a still-clogged pre-filter.

Filters for your air scrubber

• B-Air AS-PF Stage 1 Air Scrubber Pre Filters: 5 pack: First Stage Pre-Filter captures large particles to extend the life of higher efficiency filters. Replacing the pre-filter regularly prevents premature clogging of the more expensive carbon or HEPA filters, saving you money.

  

• B-Air AS-CF Stage 3 Air Scrubber Activated Carbon Filters: 3 pack: Activated Carbon Filter upgrade boosts RA-650 functionality by adsorbing gases and odors. Adding or replacing the carbon filter is essential when working in environments with chemical fumes, smoke, or musty odors.