WE ARE OPEN! All filters are made in the USA in our Alabama warehouse.

20x20x1 Air Filter

AC Furnace Air Filter 20x20x1-Inches

1. Select Filter Quality

Odor Eliminator

2. Select Quantity

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

Sorry, Product unavailable

Out of stock

Product Description

Brand: Filter King
Filter size: 20x20x1
Actual Size: 19.75 x 19.75 x 1
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

20x20x1 Air Filter

Every residential air system needs filters, the tools allow systems to bring in fresh air without any intruding particles. The average 20x20x1 size filter is able to provide many residences with the protection they need to keep their duct systems free of nasty floating problems. The air filters you use consist of a tight mesh weaving, which work to trap and absorb passing particles as they pass through on traveling airflow. Over time, air filter will need replacement to avoid the many issues that come when they are too dirty to work effectively.

20x20x1 Air Filter Use for Residential Homes

Your home should be where it is easy to breathe comfortably without having to worry about indoor air quality. The average air filter protects and installed in air systems so that the air breathed in your home is fresher than it would have been outside. Depending on location and environment, the air system may need heavy filtration to handle a variety of issues. Allergens and pollutants tend to become serious issues, especially during the warmer seasons.

20x20x1 Air Filter Use for Apartment Buildings

The air systems in an apartment building are particularly reliant on filters, considering the fact that air flow passes through multiple residences. Airflow is also travels in more than a single direction, it is also needs to leave a residence as well. Dirty air filters block incoming airflow, that creates a serious issue for an apartment building residence. Air that is unable to leave becomes dry and stale, which is uncomfortable to breathe and damaging to the lungs. Airflow is extremely important for apartments with smokers or pets, the particles and dander that result need filtration, or they may settle on every open surface they can find.

20x20x1 Furnace Filter

A heating system works by drawing air in, heating it up, pushing it through the furnace filter and then distributing it throughout your home. The process is simple, with the furnace filter being key to ensuring the air is clean before entering your home. Over time, a furnace will continue to trap and absorb intruding particles until it has become completely covered in dust and dirt. A dirty air filter for an air system is usually a problem, but for systems using machinery like a furnace the problems may become dangerous.

Air systems pushing airflow through clean filters is usually done with minimal energy. Dirty air filters require the air system to use more energy to make sure the air flow passes the blockage and enters the ducts. Increased energy means higher billing, and a heavy strain on a system that grows worse over time. The problems are even worse with a furnace, blocked airflow means that the heated air causes a rise in temperature. Too much heated air will severely damage a system and end up creating avoidable costs that would not have happened with a filter change.

20x20x1 Air Filter Best Changing Practices

Old filters are best replaced sooner rather than later, before they start causing issues throughout an air system. A filter’s lasting power is gauged from the type of air it is bringing in and its own inherent MERV (Minimum Efficiency Reporting Value) rating. The environment of an air system determines the amount of allergens, pollutants and general airborne issues a filer will need to block. An air filters MERV value actually determines its ability to trap and absorb particles only microns long.

Filter King 20x20x1 model filters rank as an 8 on the MERV scale, a number balancing effectiveness and affordability. When a filter ranks too highly on the MERV scale, then the tightness of its mesh weaving actually causes issues comparable to dirty air filters. More balanced MERV ratings ensure protection without causing the system to have to use more energy to pump airflow through. Our standard model filter is able to protect an air system against issues like:

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

20x20x1 Air Filter Delivery

New air filters are best installed every month or so to avoid the problems that come with inefficient airflow. Filter King offers a subscription service that cuts down on the hassle of finding new filters by delivering straight to your door as often as by the month. There are a variety of discounts and offers that help make our filters even more affordable, including free shipping for orders of 2 filters or more. You can order your fresh, clean filters today and have your home’s airflow come in clean.