What is the Standard Home Air Filter Size?

Learn about standard sizes for home air filters and where to buy them online. Get tips on how to measure an air filter and find one that fits properly.

What is the Standard Home Air Filter Size?

When it comes to air filtration, it's important to know the right size for your home. The wrong size air filter can lead to air bypassing the filter, reducing its effectiveness. To make sure you get the right size, let's take a look at the most common oven filter sizes and where to buy them. When shopping for an air filter, you'll want to make sure it fits snugly in the air cleaner compartment.

If you have to force it in or out, it's not the right size. To ensure a proper fit, many people use foam weatherstrip tape to slightly increase the dimensions of their preferred filter. The dimensions you see on an air filter may not be the actual size. This is because standard sizes are usually half an inch smaller than advertised.

For example, an air filter that is 12 x 12 x 1 inches has a nominal size of 12 x 12 x 1 inches. When looking for an air filter, you can find great options online and have them delivered conveniently to your door. You can also check your HVAC manual for the proper dimensions of the air cleaner. Additionally, many filters have a list of models from several manufacturers that are compatible with the filter you need. Newer system air filters don't just focus on protecting equipment, but on improving the air quality in your home.

This is one of the top health issues listed by the EPA, CDC, and the American Lung Association. So when shopping for an air filter, make sure you get one that fits properly and is designed to improve your home's air quality.

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