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How to Clean Honeywell Electronic Air

Honeywell duct-mounted Electronic Air Cleaners filter dust, dirt and other debris from the hot or cool air in whole-house furnace, air conditioner and humidifier systems. The Honeywell Electronic Air Cleaners conduct a two to three level filtration process via two pre-filter, two electronic cells and/or a post-filter. Honeywell has designed these parts for easy removal and cleaning with cleaning required only twice yearly unless dealing with a high volume of dirt or other particles in the air.

Preparation

Step 1

Turn off the air cleaner switch.

Step 2

Open your Honeywell Electronic Air Cleaner’s access door.

Step 3

Slide the pre-filters, cells and/or post-filter from the unit.

Step 4

Clean the pre-filters and/or post-filter with your vacuum’s brush head attachment.

Step 5

Fill a large, wide plastic tub with water and 3/4 cup liquid dishwasher detergent.

Electronic Cells

Step 1

Place the first cell into the water and soak it for 15 to 20 minutes.

Step 2

Grasp the sides of the cell and dunk it up and down in the water two to three times to wash.

Step 3

Dump the dirty water from the tub. If the cell still look dirty, refill the tub with fresh, soapy water and repeat the soak and washing process.

Step 4

Fill the tub with clean, hot water and soak the cell again for 5 to 15 minutes to rinse away detergent residues.

Step 5

Dunk the cell up and down and continue to rinse—replacing the rinse water as needed—until the cell doesn’t feel soapy/slippery to the touch.

Step 6

Soak the cell again in clean water for 10 minutes.

Step 7

Remove the cell, wipe the ionizer wires and contact board gently with a cloth, and set the cell aside to air dry.

Step 8

Repeat the cleaning process with the second cell.

Pre-Filters

Step 1

Fill the tub again with soapy water.

Step 2

Follow the steps for cleaning and rinsing electronic cells.

Step 3

Shake the pre-filters gently after the final rinse to remove any excess water and then set the filters aside to dry thoroughly.

Step 4

Reassemble the unit by sliding the post-filter (if applicable), cells and pre-filters back into the housing. If done correctly, the handles on the cells should face out, the airflow arrow should point in the airflow downstream direction and the pre-filters should sit within the upstream pre-filter guides.

Step 5

Close the access door and switch the air cleaner on.

Warnings

  • Wear thick gloves when handling the cells as the cells have sharp, metal edges that can slice easily through skin.
  • Dirty filters or cells can reduce not only the efficiency of your entire air processing system, but potentially cause overheating and permanent damage.
  • Turning the unit on with wet parts can result in electrical shorting, sparking or fire.
  • Never wash a post-filter.
  • Clean the pre-filter by hand only—never in a dishwasher.
  • Never wash the pre-filters and cells together as doing so can damage the pre-filters.

About the Author

Based in Southern Pennsylvania, Irene A. Blake has been writing on a wide range of topics for over a decade. Her work has appeared in projects by The National Network for Artist Placement, the-phone-book Limited and GateHouse Media. She holds a Bachelor of Arts in English from Shippensburg University.