When it comes to air filters, there are a few things you need to know. From sizes to types, grades and more, here's everything you need to know about air filters. It brings expert knowledge of a wide range of home air filtration topics, including HVAC filters, filtration efficiency, and indoor air quality. Building a custom air conditioner or oven filter allows you to choose specific dimensions if standard sizes don't work for you.
Filters should be changed every 30 to 90 days, depending on the type and efficiency of the filter. When making your purchase, you should order the filter by its nominal size, rather than its actual size. There are literally thousands of sizes of air filters, and HVAC manufacturers are incentivized to make it as complicated as possible so that you get stuck paying for their overpriced replacements. AC filters are available in many different sizes, so it can be overwhelming if you're not sure what size filter you need.
The easiest way to know what size filter to buy for your oven is to simply remove the current filter and look at its dimensions. They are usually printed along one side of the filter. Refer to the label on the filter frame. Typically, the filter size is printed along the edge of the filter frame.
Note that the size shown in bold type on the filter frame is the nominal size of the filter, which is likely to differ from its actual size. To find the size of pleated filters used in your home, you don't need to look any further than your existing filters. In the outer frame, you'll see at least one set of numbers. If you see two sets of numbers, the filter size needed to request replacements is the nominal size, not the actual size. You can ignore the actual size printed on the filter for this task, since the nominal size is the set of numbers needed to order new filters. Step 1: Measure the length and width (L x W).
If the filter is not square, the smallest measurement goes first). The size of your pleated air filter is always presented in a string of three numbers, where the first number represents the length, the second number represents the width and the last number represents the thickness. In fact, it's the most important element for your home air you can buy, and since indoor air can be up to five times more polluted than outdoor air (and no one likes to breathe pollutants), you need a high-quality air filter. Whether you're measuring wood or air filters, it's important to note that the nominal size is not the same as the actual size. As for depth measurement, standard air filter sizes are nominally 1 (0.75 real), 2 (1.75 real) and 4 (3.75 real) deep.