The size of the furnace filter is a key measurement you need to know before finding a replacement filter. Keep in mind that filters come in a wide range of sizes, ...

This article will explain how furnace filters work, ... First, be sure to buy the right size filter for your HVAC system. Common filter sizes are 16x20, 16x25 or 20x25 inches.

Shopping for a whole-house HVAC air filter? Consumer Reports provides expert advice on how to make an informed choice.

The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) has developed an HVAC filter test standard to quantify the efficiency of filters. The ASHRAE 52.2-1999 standard ...

Filtrete’s HVAC filters are widely available online and in stores, and they come in a huge range of sizes. We recommend the MPR 1900 Air Filter, which is rated MERV 13 — the highest level of ...

03:17 How Often Do I Replace Them? 04:42 The Right Size of Filter 05:00 Replacing the Filter 05:21 Whole Home Air Fresheners 05:51 Turn HVAC Back On Home Depot responds to nationwide boycott Watch: ...

High-efficiency particulate air (HEPA): The title of “HEPA” is assigned to any filter that consistently removes at least 99.97 percent of particles in the air that are 0.3 microns or larger ...

For years the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) provided a test standard/procedure for determining the performance of an air filter. Adopted in 1968 as ...

When you buy a new filter take your old filter to the store or take a picture of the size so you make sure to buy the right onw. When reinstalling the filter, use the arrow on the box and make ...