The easiest way to identify the AC filter size is to remove the existing filter from its slot and examine the filter frame. Generally, the 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, it is recommended to measure 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 filter. 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 it 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 nominal and actual sizes. 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. Let's take a look at some of the most common oven filter sizes and where to buy oven filters. When searching by brand, such as Lennox or Carrier, to find a Carrier oven filter size by model number, you can use a Carrier filter size search from the table above or with a Lennox size search facing up. So how do you find an ideal air filter? It's a combination of knowing how to measure an air filter and understanding that what you see may not be its actual size. Superior Carrier and Lennox systems offer some of the best residential filters available in MERV 15 and 16 respectively.
Installing multiple 1-in-a-slot air cleaners, for example, can cause costly damage to your air conditioning unit, as residential ovens are not equipped to handle this level of airflow restriction. When in doubt, you can always measure your air filter with a ruler or any other measuring device. Do not stack several smaller air filters on top of each other to place them in a larger air handler. There are many options for buying air cleaners with convenience, either online, through your HVAC service company, or in-store. The oven filter size chart below lists standard sizes 1 inch, 2 inch, and 4 inch deep air conditioner filters for your air conditioner, oven, HVAC and Atomic Filters. You can proactively cleanse your home's air and surfaces by adding an air purifier in your duct that creates supercharged particles.
This creates charged particles that will attract other particles in the air for better filtration when using electrostatic filters. The filter should be slightly smaller on each side of its housing slot, allowing you to slide it in and out with ease. However, they usually add an additional surcharge to compensate for their services.