When it comes to keeping your home's air clean and your HVAC system running efficiently, the right size air filter is essential. But how do you know what size air filter to buy? In this article, we'll explain how to find the right size air filter for your home and where to buy it. The first step is to check the dimensions of the air cleaner on the side of the filter. Most filters are labeled with two size measurements that are located along the side of the filter. Measure the length and width (L x W).
If the filter is not a square, the smallest measurement comes first. To find the size of pleated filters used in your home, you don't need to look any further than 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 order 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. As a last resort to finding the right air filter size, measure the air intake parameters.
This is the most labor-intensive option and leaves more room for error. Only choose this method if you are sure that the current filter is not the right one. When in doubt, you can always measure your air filter yourself with a ruler or any other measuring device. From filtering harmful contaminants to keeping your HVAC unit running efficiently, these products have several benefits. Filters should be changed every 30 to 90 days, depending on the type and efficiency of the filter.
There are several great options for buying air filters online and having them conveniently delivered to your door. The size of the pleated air filter is always presented in a chain of three numbers, where the first number represents the length, the second number represents the width and the last number represents the thickness. Installing several 1-inch air filters in a 2-slot, for example, can cause costly damage to the air conditioning unit, since residential ovens are not equipped to withstand this level of air flow restriction. However, you can choose not to use factory-installed filter grids and have an HVAC professional install an external filter grid for a thicker filter. If you can't find your size in the store or need a custom-made air filter, online retailers are probably your best option. HVAC service companies often offer air filter replacement services in addition to system repair and unit installation services. For common brands of HVAC systems such as Goodman, Lennox, Trane, Rheem York, Coleman and Carrier, most standard air filter sizes will work.
You can find the recommended filter size for your unit model here in our table titled “Find your air conditioner and oven filter by make, model number and size”. It is important to note that there is no need for an airtight seal between the frame and the air filter. Keep in mind that some HVAC systems require more than one air filter, so make sure you have all of their correct measurements before ordering replacements. In conclusion, finding out what size air filter you need for your home doesn't have to be complicated. Start by checking existing filters for their nominal sizes or measure them yourself with a ruler or other measuring device. You can then purchase replacements online or through an HVAC service company.