How Does a 20x20x1 Air Filter Work? A Comprehensive Guide

A 20x20x1 air filter is a common size for air filters, and it is actually 19-¾ x 19-¾ x ¾ inches in size. This size is trimmed by a quarter of an inch to ensure that it fits the air return without being too big. This includes custom sizes, such as 27 x 23 x 2 inches, which is 27 inches x 23 inches x 1 ¾ inches. A good quality 20x20x1 pleated MERV 8 filter will allow good air flow for your air conditioning equipment and will help protect your home's air quality.

It will filter a high percentage of pet dander, pollen, mold, and bacteria. Home air filters not only protect the rest of the air conditioning system, but they can also protect your family's health by purifying the air from pathogens, allergens, and other pollutants. It's a very common and easy to find size, and it's listed in a short list of sizes that are common enough for air filter companies like us to keep them in stock. You can even incorporate filter add-ons, such as an electrostatic precipitator, to increase purification. Electronic filters, also called electrostatic precipitators, are placed inside the ducts so that electrically charged particles pass through the filter. To understand the size of air filters better, you must first understand that there are two main types of air filters: those with a low MERV rating and those with a high MERV rating.

Low MERV rated filters are better at capturing a wider range of air particles than filters with a high MERV rating. They can do this because all of the air that circulates through the HVAC passes through the air filter. The MERV rating system (minimum reported efficiency value) was designed to help determine how well an air filter removes particulates from the air. When replacing filters, it is important to use a good quality pleated MERV 8 filter to ensure good air flow and protection for your home's air quality. It is also important to use the correct size filter for your HVAC system.

If you can't find it in the filter, you can tell Second Nature the nominal size and brand you used before, and they can find the filter you're looking for. In addition to using a good quality pleated MERV 8 filter, it is also beneficial to incorporate filter add-ons such as an electrostatic precipitator to increase purification. This way you can get optimal air purification throughout your home.

Catherine Plessner
Catherine Plessner

Devoted bacon trailblazer. Subtly charming burrito aficionado. Infuriatingly humble coffee advocate. Certified foodaholic. Incurable sushi guru. Award-winning travel lover.