Nominal size is a manufacturer's estimate only, and is usually shown on the side of the filter. This rounded number is used for consistency, so that buyers don't get confused by variations in measurements. The filters are labeled with three-part dimensions: length, width, and depth or thickness. It's important to note that air filters, oven filters, AC filters, and air conditioning filters are all the same.
So if you're looking for household air filter sizes, HVAC filter sizes, oven filter sizes, or AC filter sizes or air conditioner filter sizes, you're looking for the same thing. To find the correct filter size for your oven, measure the length and width (L x W). If the filter is not square, the smallest measurement goes first. Honeywell, Hunter and Whirlpool have several models of room air purifiers available, so it's important to check compatibility before purchasing a replacement.
This creates charged particles that will attract other particles in the air for better filtration when using electrostatic filters. In this case, you'll want to round down to the nearest integer to determine the nominal size of the air cleaner. This rounded measurement is called the nominal size and is used to match the correct filter to the air cleaner slot of the accessory. Note that the model number of many filters is very similar, so it's important to check the actual size (actual measured dimensions of the filter) to make sure you have the correct filter. The easiest way to identify the size of the AC filter is to remove the existing filter from its slot and examine the filter frame.
Since HVAC technicians come to your home and evaluate your specific unit, they know what type of filter your oven can handle and what is best for your system. Oven filter sizes for standard sizes (also known as standard AC and oven filter sizes) and hard to find are included in a list with actual sizes and MERV options. Improperly sized or installed governable filter frames can cause air leaks, which significantly decreases filter effectiveness. 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. Newer system air filters don't just focus on protecting equipment, but on improving air quality in your home - one of the top health issues listed by the EPA, CDC, and American Lung Association. Watch a video for guidance on using an oven filter size chart below and hear expert advice to make sure you make the right choice and avoid common mistakes.