Each unit has a specific size filter that allows it to operate correctly and efficiently. Most air conditioning and HVAC units use standard-size filters, but some require the purchase and installation of a custom-sized air filter. Actual Size Chart The easiest way to identify the AC filter size is to remove the existing filter from its slot and examine 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. If the actual dimensions do not appear in small print on the filter frame, we recommend measuring the filter for double checking. In this case, you'll want to round down to the nearest integer to determine the nominal size of the air cleaner. The actual size of your air filter should be 0.25 -0.5 smaller than the slot or frame itself.
HVAC unit slots are usually located near the bottom of the air handler. It's best to have a little wiggle room in the slot of the HVAC unit, so you can easily slide the filter in and out without it bending or breaking. If you have to jam the air filter to install it, you should try a different brand of oven filter or a custom-sized air filter with a slightly smaller actual size. Central air return grilles are usually located on the ceiling of the hallway or on the wall of the hallway of your home.
If the return grille is in the ceiling, you may prefer to use a filter that has a slightly larger actual size, so that the filter does not fall on you when you open the vent. When purchasing a custom-sized air filter, it's important to remember the difference between the nominal and once you determine the exact dimensions that work best for you, place an order for your filter size with the exact fraction or decimal of your preferred measurements. Otherwise, you may get a different actual size than you expected. This rounded measurement is called the nominal size and is used to match the correct filter to the air cleaner slot of the accessory.
Understanding more about the sizes of air conditioning and oven filters can ensure you find the perfect size for your home. There are several great options to buy air filters online and have them delivered conveniently to your door. There are hundreds of varying sizes of oven filters because the air filters and the oven are the same. Worse, improperly sized air filters can put excessive strain on your HVAC system, damage it, and increase your energy bills.
If that doesn't work, you may be able to find the proper dimensions of the air cleaner in your HVAC manual. Whole house AC filters with a size of approximately 3 to 6 inches wide can have a lifespan of 6 to 12 months, depending on environmental conditions. To check the size, turn off the system, remove the filter from the compartment and observe the dimensions. This creates charged particles that will attract other particles in the air for better filtration when using electrostatic filters.
Then use a measuring tape or other measuring device to measure the length, width, and depth of the inner edge of the groove or frame of the air cleaner. Each brand manufactures filters with slightly different actual sizes, so check the exact measurements of each filter before purchasing. Oven filter sizes for standard sizes (also known as standard AC and oven filter sizes) and hard to find are included in the list with actual sizes and MERV options. If it isn't, the best way to determine the size you need is to measure the filter that's already there, assuming it's the right size.