Understanding Home Air Filter Sizes

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Before you buy a new air filter, it’s important to understand the differences between the various home air filter sizes. The most common sized filters fit vents that measure 30 inches by 20 inches. These filters do not fit those that are bigger than these. However, if you have a small vent that measures only 19 inches by 20 inches, you may want to consider purchasing a larger size. This is not always possible, though.

First, you’ll need to know about home air filter sizes. Most filters come in standard sizes of either 1 inch or 2 inches, so you need to be aware of the difference. Remember that standard size filters are actually half an inch smaller than the advertised size. In other words, a 16×25-inch filter will actually be about 15-1/2 inches by twenty-four inches. That’s why it’s important to know how to measure your filters accurately.

Besides the nominal size, you’ll also need to know the actual size of the filter you’re buying. A 20x20x1 air filter is really only 19-3/4″ by 7/8″. Using a ruler, you can determine how big it is. It’s important to choose the right size because a larger size will clog up the return. It’s important to match the correct size to the system it’s intended to fit.

Before you buy your home air filter, make sure it fits. Unlike what you might think, air filters aren’t snug. Most standard sizes are about half an inch smaller than the advertised size. That means that you should choose a size that will fit your air filter in your air return without any problems. Then, you’ll be ready to make your purchase. You’ll be glad you did! Understanding Home-Blown Air Filter Sizes

 Fortunately, most manufacturers do not make their filters to fit into standard dimensions. Instead, they offer a wide variety of standard sizes, so you can get the perfect one for your needs. If you’re buying from an online retailer, you’ll likely have to pay more for the exact same model, but you’ll save money this way.

The size of a home air filter should be in proportion to the size of the frame in the air return. You should always ensure that the dimensions of the frame will fit properly. If the frame is not standard, you can increase the size of the frame by using adhesive foam weather-stripping tape. You should also consider the size of the frame in your air return. If you’re buying a whole house filter, make sure it fits into the space.

Trisha Lewis

Trisha is the lead writer @ AirQualityShop.com She also writes in the wellness and green space. On AirQualityShop.com Trisha specializes in pure air product reviews and DIY articles.