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20x24x1 Air Filter Merv 8
20x24x1 AC Filter Merv 11
20x24x1 Furnace Filter Merv 13
20x24x1 Filter Merv 13 Titanium
20x24x1 Filter Merv 10 Carbon
20x24x1 Filter Merv 8 Carbon 20x24x1 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
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20x24x1 Air Filter

AC Furnace Air Filter 20x24x1 -Inches

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Product Description

Item Model Number: FKFB20X24
Brand: Filter King
Filter size: 20x24x1
Actual Size: 19.5 x 23.5 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, 20x24x1 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.

20x24x1 Air Filter Reviews

What MERV Rating should I choose?

How Often to Change Your 20x24x1 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.

20x24x1 Air Filter

Your air filters are important parts of any air system, they keep the incoming airflow clean and healthy to breathe. The airflow coming into your home can be full of harmful irritants that cause breathing problems and general discomfort for those inside. 20x24x1 air filters match your systems filtration needs and fit into matching systems with ease. Once installed, the filter’s tight mesh weaving traps and absorbs particles passing through on airflow and prevents them from entering the duct system. Over time, the filters becomes become full of absorbed particles and become blockages for their air systems. It is important to maintain your air filters and replace them periodically, before they begin to cause problems for your home.

20x24x1 Air Filter Use for Residential Homes

Your home may need air filters for more than just the average airborne irritants, some homes have to also handle problems like pollutants and allergens. Certain airborne irritants are more harmful than others. Many irritants have the ability to cause the development of breathing issues or trigger allergens. Your air filters prevent airflow from bringing in any problems until the point where it becomes completely full of the particles it has blocked. Dirty air filters are so full of particles that they become a blockage in the system, causing a host of problems.

When your air filters are dirty, then the resulting lack of fresh airflow quickly becomes a problem for your home. If the air inside your home is not regularly cycled, then that has a deep impact on the indoor air quality of your residence. Old air becomes stale and dry, stagnating over time and being generally damaging to the lungs. Fresh air filters let airflow through with no issue, keeping the air inside cycle and keeping your home smelling fresh and clean.

20x24x1 Air Filter Use for Apartments

Your apartment has fewer options than a contemporary home when it comes to ensuring a cycling airflow and clean air. Your residence needs air filters to keep the air cycling effectively, with new air coming in and old particles going out. Air cycling is particularly important for homes like apartments with resident smokers or pets. Pet dander has the tendency to trigger allergic reactions in certain people, and smoke particles creating breathing issues as well as color any surface they land on. Old, dirty air filters are unable to process the airflow efficiently leading to build up of particles in your home affecting air quality and resident health. New air filters are help avoid these issues and keep your apartment fresh and clean smelling.

20x24x1 Furnace Filter

Heating and cooling air systems alike need air filters to keep your duct systems protected and prevent issues with irritants. Your furnace system needs the filters installed in between where the air heats up and the blower fan that distributes it. Heated air travels through the duct system and into your home, heating the rooms to the appropriate degree. The air filters become dirtier over time and without regular maintenance they become a blockage that creates further problems over time.

Furnace filters have the responsibility of providing fresh air while at the same time having more serious consequences when becoming a blockage. The air inside needs release or the extreme temperatures will begin to warp and effect the furnaces parts. New furnace parts are costly and like the rest of your home’s air systems are important protecting the air inside. Furnace filter maintenance prevents unnecessary costs and keeps the system safe from harmful wear and tear.

20x24x1 Air Filter Changing Practices

It is in your best interest to get into the habit of habitually changing out old filters for new ones. The rate of replacement often depends on the environment of your home and the efficiency of the 20x24x1 filter. The environmental factor has to do with all the pollutants and allergens in the surrounding area that may cause the filters to fill up with particles faster. The filter’s ability to trap and absorb particles is reliant on its MERV (Minimum Efficiency Reporting Value) rating.

Your filter’s MERV rating is the direct measurement of its weaving and its ability to capture particles. The higher ranked your filter is on the MERV rating system, the tighter its mesh weaving is. The best filters for your home have a balanced ranking that allows for loose enough mesh to allow airflow to easily travel through. Filter King 20x24x1 filters rank as an 8 on the MERV scale, meaning that they are able to block out basic irritants along with smaller ones like:

  • Pollen
  • Dust
  • Mold
  • Dust Mites
  • Bacteria
  • Pet Dander
  • Smoke
  • Virus’s

Replacing an Old Filter

New Filter installation is an easy process that only needs a few steps and a little time. The location of the old filter is in the air system owner’s manual, you can remove it from there and see the filters size along the cardboard edge. Once a new, similarly sized filter arrives it can easily go in place and provide the home with fresh, clean air. The process is easy, but needs to be done consistently in order to avoid any problems.

20x24x1 Air Filter Delivery

Filter King provides premium quality 20x24x1 filters at affordable prices that make maintenance easier than ever. We offer a delivery service where the filters are brought straight to your home, orders of two or more filters are even delivered for free. For a more consistent schedule, use our subscription service to have new filters delivered as often as monthly. Order today and enjoy the fresh, clean airflow that comes with new filters in a system.