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21.5x23.25x1 Air Filter Merv 8
21.5x23.25x1 AC Filter Merv 11
21.5x23.25x1 Furnace Filter Merv 13
21.5x23.25x1 Filter Merv 13 Titanium
21.5x23.25x1 Filter Merv 10 Carbon

21.5x23.25x1 Air Filter

AC Furnace Air Filter 21.5x23.25x1 -Inches

1. Select Filter Quality

Odor Eliminator

Out of stock

Product Description

Item Model Number: FKFB21.5X23.25A
Brand: Filter King
Filter size: 21.5x23.25x1
Actual Size: 21.5 x 23.25 x .75
1-Inch Filter
MERV 8 Filter Rating
Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses
Residential / Commercial Use

Manufactured in the US

21.5x23.25x1a Air Filter Reviews

21.5x23.25x1 Air Filter

Filter King 21.5x23.25x1 size air filters are significant parts of any air systems' ability to clean out incoming airflow. These tools consist of a tight mesh weaving that was ergonomically designed to allow airflow to pass through but stop irritants from entering your systems. The clean air is then able to enter your home and cycle through its various rooms to provide a fresh, clean smell throughout. Indoor air quality rises while your home becomes safer to stay in as the air remains clean. The process is consistent, your air filter will not stop cleaning out incoming airflow, until the filters become too dirty to work effectively.

Your air systems use their filters continuously until they have become completely covered in the particles they are meant to capture. At this point, the filters become a blockage for your system that cause several problems throughout your home. When air is unable to travel through your systems then the air already inside your home will begin to dry out and stagnant over time. Your air systems are affected by the blockage as well, and in their attempts to fix the problem may cause more instead. Your air systems will try to push airflow through the dirty filter, which lead to a rise in energy billing and possibly even mechanical failure.

You will need to frequently swap out your old air filters for new ones in order to keep the air flowing into your home smoothly. Filter King has a full stock of available 21.5x23.25x1 size air filters ready for use in your home. We offer a delivery service to have the filters delivered right to you, with a subscription option that has them regularly shipped out. Orders of two or more filters are even shipped out for free. The filters have a MERV (Minimum Efficiency Reporting Value) rating of eight, showing that they can block out particles like:

  • Pollen
  • Dust
  • Mold
  • Dust Mites
  • Bacteria
  • Pet Dander
  • Smoke
  • Viruses

21.5x23.25x1 Furnace Filters

The air filters you order are usable in multiple air systems, which includes your furnace systems. Furnace filters require frequent replacement in order to keep the air coming in smoothly and without any issues. Dirty furnace filters are a problem that will cause issues throughout your home as the heated airflow builds up over time. You need to keep the air filters in your furnaces clean, or they could cause temperature problems and suffer mechanical damage.