The frames of air filters are usually made of beverage cardboard, which is strong enough to withstand the pressure. A 20 x 20 x 4 inch MERV 11 rated air filter is designed to eliminate common contaminants such as dust, pollen, lint, and mold, as well as smoke, smog, coughing and sneezing particles, and pet dander. This type of filter is mainly used in places where it is necessary to remove pollutants from the air, such as hospitals and laboratories. If you have pets, children, or allergy sufferers in your home or business, it is recommended to replace the filters more often in order to maintain a higher indoor air quality and reduce energy costs. As a rule of thumb, low-cost fiberglass filters should be changed every 30 days.
Regularly replacing air filters in the home can prevent costly repairs or system replacements in the future. It is also possible to convert standard 1-inch air return ducts to a 4-inch design. With this classification, the air filter will effectively remove particles that cause allergies and allow you to breathe comfortably. It is essential to change 20x20x4 air filters regularly in order to keep the air conditioning system in good condition. 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.
Filter King AC & oven filters are not your typical fiberglass filters that need to be replaced every 30 days. Many homeowners wonder how often they should change their 20x20x4 oven filter or 20x20x4 air filter. With this classification, air filters effectively capture and remove a wide variety of particles, including bacteria, smoke, and some viruses. To subscribe to the air filter delivery service, tell us what size air filters you need, how many you need, and how often you want us to deliver them to you.
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