What Is The Most Common Size Furnace Filter

The most typical sizes for a furnace filter are 16 x 20 20 x 25 and 16 x 25 however many other sizes are available for purchase on our site.

What is the most common size furnace filter. An up flow furnace as the name implies pushes the warm air up. Note the size printed on the air filter frame. What is the most common size furnace filter. Take a look at our dusteater and lifestyle series.

The most common ac filter sizes and furnace filter sizes are the 16x20x1 air filter 20x20x1 air filter the 16x25x1 air filter and the 20x25x1 air filter. All of these ac filter sizes can be found in the air filter size chart. There are different types of furnaces but most use a common furnace filter size so before replacing your filter you need to know w hich size and type you need. Most hvac systems use a standard 1 inch thick filter so we focused exclusively on 1 inch medium efficiency merv filters.

A 16 x 20 filter will have actual dimensions of 15 1 2 x 19 1 2. If you removed an old filter check its size so you can be sure you have the correct filter for replacement. Which means they can ship out within 24 48 hours. The size of your filter will be located on the side of the door on your filter cabinet.

The most common furnace filter sizes are 10 x 20 14 x 20 16 x 24 18 x 30 12 x 12 14 x 24 16 x 25 20 x 20 12 x 20 14 x 25 18 x 18 20 x 24 12 x 24 14 x 30 18 x 20 20 x 25 12 x 30 15 x 20 18 x 24 20 x 30 12 x 36 16 x 20 18 x 25 4 x 24 and 25 x 25 and these sizes. This rounded measurement is referred to as the nominal size and is used to match the right filter to its fitting air filter slot. The minimum efficiency reporting value merv scale goes from 1 to 16. The filter must fit snuggly in your furnace.

By using the nominal size you can order a new air filter that slides in and out of place with ease. These are installed either in wall mounted air return vents most common. If you have any questions about the size you need you can refer to the owner s manual for your furnace or air handler or contact your local lennox dealer. This type is probably the most common.

Look at the old furnace filter to see which size and type it uses. Furnace filters come in a range of sizes and different brands and types of furnaces use different filters. Install the new air filter. There are a few places your filter could be located.

Determining the furnace filter size is the first step in purchasing a new filter. While we do offer standard air filter sizes we also offer custom sizing on all of our air filters. Don t overlook the importance of furnace filter replacement. Most residential filters range from 4 to 12.

The chart is a furnace filter size finder just click on the filter sizes and you will see purchase options. Your brand of furnace may need an electrostatic o r media filter of a specific size. Currently the most common size furnace filters are 10x20. The quickest way to find the size of your filter is to get it off of the old one.