When it comes to air filters, size is an important factor. To ensure that your home's air quality is not compromised, it is essential to know the exact dimensions of your air filter or oven filter. In some cases, the length and width are interchangeable, but you'll always have to make sure you measure three specific dimensions. Standard air filters are nominally 1 (real), 0, 7, 2 (real), 1.7 (real), and 4 (actually 3.7) deep. Measuring an air filter can be done in a few simple steps.
First, measure the length and width (L x W). If the filter is not a square, the smallest measurement will be the first. If the dimensions are too faded to read or there is no air filter to look at, it's time to do it yourself. Most air filters are located on the right or at the bottom of the unit and can be easily removed from the slot. It's important to remember that the dimensions you see may not match the actual size.
If an air filter is too small, air gaps will be created and contaminants will bypass the filter material. We recommend removing the existing filter and measuring it to confirm the actual dimensions. If that doesn't work, you may be able to find the proper dimensions of the air filter in your HVAC manual. Most people won't be able to find the size of air filter they need at their local home improvement store. Installing a smaller filter will allow unwanted contaminants to pass through and enter your home's air and air conditioning system.
Timely replacing your oven filter is much easier when you know what size air filter you need. Here's a fun fact: 70% of what Filterbuy sells is out of the 10 most common air filter sizes. Knowing how to measure an air filter and understanding that the dimensions you see may not match the actual size are key components for finding the perfect air filter for your home.
