Honeywell FC100A1045 | Our#: 112909

Honeywell Replacement Media FC100A1045- 21.5x27.5, 2-Pack

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Honeywell FC100A1045 | Our#: 112909

  •  Fast Shipping & Free Returns
  •  100% Compatibility Guarantee
  •  Fast Shipping & Free Returns
  •  100% Compatibility Guarantee
Frequently Purchased Together
21.5x27.5x5 AIRx HEALTH Honeywell FC100A1045 Replacement Air Filter - MERV 13
(case of 2 Filters) MFG#: 21.5x27.5x5HW-HEALTH

Product Details

Reducing indoor air pollutants creates a healthier breathing environment. A MERV 10 rating on the Honeywell replacement media reduces dirt, dust, pollen, mold, pet dander and odors. While capturing airborne particles, it allows maximum airflow. Rigid galvanized wire holds the media in place and improves the filter's capacity. The filter's frame and media materials resist moisture in any climate. For healthy indoor air, replace the filter once every six months.

  • MERV 10
  • removes airborne pollutants, allergens and odors from indoor air
  • provides efficient filtration without hindering airflow
  • moisture-free materials provide excellent filtration in any climate
  • sturdy support fingers improver's performance
  • replace every 6 months
  • OEM part fits Honeywell Series F27F
  • replaces filter number #207583
  • 21-1/2” x 27-1/2” x 5" nominal size
  • 21-1/4” x 27-1/4” x 4-3/8" actual size

How to change your furnace/air-conditioner/HVAC air filter

Estimated time: 10 minutes or less


  1. Determine the location of your filter

    Your forced air system will be similar, whether or not it is a heating (furnace) or cooling (AC) system – or both. The furnace filter housing/slot is located right next to the heating/cooling system’s air handler or blower. Your filter(s) may also be located in a return grille on the wall or ceiling of your home.

  2. Determine the type/size of filter that you use

    Typically, the dimensions or part number of the filter will be printed on the filter frame. Use this information to order a new filter.

  3. Purchase a new air filter from

    Visit and purchase a new filter. Use our filter finders to verify the correct match.

  4. Remove the old filter

    Turn off the power to the heating/cooling system and remove the old filter from its housing/slot and discard.

  5. Insert the new filter

    Pay attention to any airflow direction arrows printed on the frame of the new filter. Install the filter by sliding it into the filter housing/slot with the airflow arrow pointing towards the blower. If installing the filter in a wall or ceiling grille – the airflow arrow should point towards the wall or ceiling. Turn on the power to the forced air system.

    Enjoy cleaner air!