All filters are made in the USA + Free Shipping on orders over $50

Call Us C877.570.9755

23.5x25x1 Air Filter Merv 8
23.5x25x1 AC Filter Merv 11
23.5x25x1 Furnace Filter Merv 13
23.5x25x1 Filter Merv 13 Titanium
23.5x25x1 Filter Merv 10 Carbon
23.5x25x1 Filter Merv 8 Carbon 23.5x25x1 Filter Merv 8 Carbon
Protects All Against
  • Pollen protection
  • Dust protection
  • Mold protection
  • Dust Mites protection
    Dust Mites
  • Bacteria protection
  • Pet Dander protection
    Pet Dander
  • Smoke protection
  • Viruses protection
  • Cooking Smoke protection
  • Odor protection
  • Smog protection
{{ filter_count }} Pack of

23.5x25x1 Air Filter

AC Furnace Air Filter 23.5x25x1 -Inches

1. Select Filter Quality

Odor Eliminator

2. Select Quantity

${{ money(priceWithoutDiscount()) }} Save ${{ money(savePrice()) }} ({{ savePercent()}}%)


Product Description

Item Model Number: FKFB23.5X25A
Brand: Filter King
Filter size: 23.5x25x1
Actual Size: 23.5 x 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

Why Buy Air Filters From Filter King?


In comparison to fiberglass filters, 23.5x25x1 pleated air filters are at least 20 times more effective. All Filter King air filters are made in the US.


Filters frames are made out of heat resistant paperboard with horizontal grid supports. Able to withstand temperatures of up to 200° F and resistant to moisture, the paperboard frames do not support microbial growth and outperforms traditional cardboard frames.


Chemical free, electrostatically charged synthetic polyester media is pleated, maximizing the surface area, to capture a high number of airborne particles as small as 0.3 microns with low air flow resistance. To increase durability, the media is supported with a corrosion resistant steel wire.

23.5x25x1 Air Filter Reviews

What MERV Rating should I choose?

How Often to Change Your 23.5x25x1 Air Filter?

Filter King AC & furnace filters aren’t the typical fiberglass filters that need to be replaced every 30 days. Our filters can typically be used for 3 to 5 months before requiring to be changed. Naturally, a variety of things influence filter lifespan.

Some of the factors that influence your filter’s life include outdoor air quality, whether pets are in the home, and how well your HVAC system is maintained.

Your air filter becomes clogged over time by trapped particles, preventing airflow. The efficiency of the HVAC filter declines. Your system must work harder to heat and cool your home. The extra strain on the HVAC system causes higher energy bills. Regular home air filter replacements can prevent expensive system repairs or replacements down the road.

You should change your filter more frequently if you notice:

  • Household dust build-up
  • The air isn’t cooling as is used to
  • There’s more dust near the air vents
  • A dirty filter surface
  • Higher energy bills
  • Burning smells near your HVAC system.

23.5x25x1 Air Filter

Filter King 23.5x25x1 size air filters are used by your air systems to make sure that incoming airflow is free of any irritants. The filters themselves consist of a tight mesh weaving that traps and absorbs any problematic airborne particles. The filters work the system and clean out incoming airflow so that the air inside your home is not polluted. This process raises your home’s air quality and makes it more comfortable to breathe inside. Over time, the air filters will grow dirtier and less capable of allowing the passage of airflow into your home.

Dirty air filters are a problem that needs to be addresses before they start causing issues throughout their systems. Airflow is unable to pass through the dirty filters which leads to dryness and stagnation throughout your home. Your air systems will try to push airflow past the blockage and into your home. The strain that results will cause mechanical damage over time and also cause a rise in energy billing for your home.

Filter King offers new 23.5x25x1 size air filters ready for use upon their arrival at your home. We offer a premium delivery service to have the new filters arrive right at your door. Orders of two or more filters are shipped for free and with our subscription option means that they arrive frequently. The air filters we provide have a MERV rating of eight, which means that they block out particles like:

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

23.5x23.5x1 Furnace Air Filters

Your home’s furnace system needs filters installed in order to keep the heated airflow from polluting your air systems. The filter goes in between where the air becomes heated and where it distributes into your home. When the furnace air filters become dirty, then the block heated airflow becomes a problem over time. The temperatures in the system will rise until they cause serious mechanical damage and require you to make some costly repairs. Your home will also see temperature fluctuations due to the lack of incoming heated airflow. Order new air filters today and avoid these problems when you have them installed periodically.