Are All House Air Filters the Same Size?

Actual filter size is usually ¼ to ½ inch smaller than its nominal size. To convert actual to nominal size, measure the filter and round each dimension to the nearest inch. The nominal size is only an estimate from the manufacturer and is used for consistency. Whole house filters are always 4, 5 or 6 inches thick.

First understand that air filters, furnace filters, AC filter and air conditioning filters are all the same filters. So if you need to find household air filter sizes, HVAC filter sizes, furnace filter sizes or air conditioning filter sizes, you're looking at the same thing. Using the following table as an oven filter size finder makes it easy to find the correct filter size for your oven. Most white pleated air filters are inherently the same within each efficiency level, varying slightly, if at all, between brands. There are also accordion air filters and, as it sounds, they are shaped like an accordion.

Filter King offers hundreds of different filter sizes that can be used in various home systems, including your oven. Since HVAC technicians come to your home and evaluate your specific unit, they know what type of filter your oven can handle and what is best for your system. On the other hand, if the filter is too large, the frame will be wrinkled, air flow will be restricted, and longevity will be compromised. If you can't find it in the filter, you can provide Second Nature with the nominal size and brand you used previously, and they'll be able to find the filter you're looking for. The most common sizes of AC filter and furnace filters are air filter 16x20x1, air filter 20x20x1, air filter 16x25x1 and air filter 20x25x1. Household air filters are those that get into the wall in the air return; although, in some homes, they can go on the ceiling or in the ductwork itself. If the filter is too small, it will loosen and some of the air (and debris) will not pass through the air filter. From filtering out harmful contaminants to keeping your HVAC unit running efficiently, these products have several advantages.

The air filters in newer systems are not only focused on protecting equipment but also on improving air quality in your home which is one of the top health concerns listed by the EPA, CDC and American Lung Association.

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