The size of an air filter 20x20x1 is a common size for many households and businesses. It is essential to comprehend the rating of the filter, as this will decide how often it needs to be changed. The filter frames are made of beverage cardboard, which remains resistant to moisture and temperatures up to 200°F. The electrostatically charged, chemical-free synthetic polyester material is pleated, maximizing surface area to capture a large amount of airborne particles as small as 0.3 microns with low airflow resistance.
The American Heating, Refrigerating, and Air Conditioning Society (ASHRAE) developed the MERV classification system as a consumer standard. This system rates filters on a scale from 1-16, with 1 being the lowest level of filtration and 16 being the highest. Filters in this range are more common in hospitals, laboratories, and manufacturing facilities, where airborne particles are potentially hazardous. Replacing air filters regularly in the home can prevent costly repairs or system replacements in the future.
Unless you're working with a fiberglass filter that needs to be changed every month, most household air filters can be changed every three to five months. Some of the factors that influence the lifespan of the filter include the quality of the outside air, whether there are pets in the home, and how well the air conditioning system is maintained. The air filter helps ensure that dust, dirt, and other outdoor air pollutants are cleaned before air reaches the house. It is important to remember that when creating a filter with this tool, you must use the “real” size of the filter, that is, the size shown by the measuring tape, and not a nominal filter size. If you live in the contiguous U.
S., you will be entitled to free shipping with two or more filters on your order.
