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Actual size for 4 inch air filter4/8/2024 ![]() ![]() Below are lists of the most common air filter sizes by depth. Our product assortment contains every hard-to-find size you can imagine, in addition to custom sizes depending on your specific needs. ![]() For instance a 20x30x1 may be on the label of your filter, but if you measure the filter you will see the actual size is less than 20x30x1 Air Filter Nominal Size. ![]() Most Common Air Conditioner Filter SizesĪt Air Filters Delivered, we offer more than just standard size filters. See the complete list of Air Filters by Size Rating and Brand. Wondering what to do with your old filter now that you’ve measured it? Read more to find out how to properly dispose of your air filter or if your dirty air filter is recyclable. It’s as simple as that! You are now ready to buy the right filter for your HVAC. A nominal piece of lumber 2by4 is actually only 1 1. The actual is the true dimensions of the length, width, and thickness of the filter required by the unit.Air filters of actual 19 1/2 x 19 1/2 x 3/4 are nominal 20x20x1. Step 3 - Put Your measurements together (L x W x D). The 5 inch furnace air filter comes in 4.25, 4.38, 4.5, 4.75 and 5 inches wide, depending on furnace manufacturers. How to Measure an Air Filter Video Transcript Here are some examples: Assuming your existing filter is sized correctly, look to see if the dimensions of height, width, and depth are printed on its frame. If that is the case, you might need to contact a professional for assistance. Although not common, some filters are found in air vents instead. When it comes to purchasing air filters, it is essential to understand the difference between nominal and actual dimensions.Nominal size is the size printed on the cardboard edge of the air filter, while actual size is the exact size of the filter when measuring length, width and depth (thickness). Most air filters are located to the right or bottom of the unit and can be easily pulled out of the slot. If you can't figure out how to turn off the unit, turn off the breaker. However, according to Energy Star, filters should be changed every month during peak summer and winter months when your HVAC system is operating at its highest capacity.įor safety, turn off your HVAC unit before attempting to change the filter. Your filters should be changed every 30 to 90 days depending on the type and efficiency of your filter. Proper maintenance will keep good air quality in your home, increase the life span of your system, and consume less energy lowering your bills. Remember, regular maintenance of your home’s cooling and heating system is essential to ensure it operates efficiently. When you need to replace your filter, these simple steps will help you measure the right dimensions. ![]()
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