What Size Air Filter Should I Use for My AC Unit? - A Comprehensive Guide

Getting the right size air filter is key to the health of your air conditioning system. If your filter isn't the right one, it just won't work. A filter that is too small will leave a space where debris and particles can enter; a filter that is too large will not fit in the slot. For common brands of air conditioning 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 the table titled “Find your air conditioner and oven filter by brand, model number, and size.” When it comes to air conditioning and heating filters, it's critical to understand the size you need. The air filters are labeled with three different dimensions. The first number refers to the length of the product, the second number is the width, and the last number is the thickness or depth. Sometimes, you might need a custom filter size if your device doesn't use standard filter dimensions.

Choosing the right filter size is crucial not only to maximizing the efficiency of your appliances, but also to promoting a healthier, greener living environment. If you use a properly sized filter and change it regularly, you can enjoy cleaner indoor air and reduce system problems. Selecting the right air filter size is vital for optimal energy efficiency and appliance performance. It's best to have a little wiggle room in the slot of the air conditioning unit, so you can easily get the filter in and out without it bending or breaking.

If the ventilation grille is on the roof, you may prefer a filter that has a slightly larger actual size, so that the filter doesn't fall on you when you open the vent. Most white pleated air filters are inherently the same at each efficiency level and vary slightly, if any, from brand to brand. These numbers refer to the standard size of your home's return vents, responsible for controlling the movement of air to and from the air conditioning unit. If you can't find your size in the store or need a custom-made air filter, online retailers are probably the best option for you. Air filters play an important role in keeping your AC unit running smoothly. To do this, they trap and retain airborne particles and pollutants (such as dust, pollen, and bacteria) that can damage the system and reduce the quality of the home's air.

Some filter materials can be recycled, meaning that they can be processed and used to create new products, reducing the demand for new raw materials and the energy used in manufacturing. Air filters also help keep the furnace's coils and heat exchangers clean, which can extend the life of the oven and keep it running efficiently. If the filter isn't the right size, either too small or too large, air will flow around the filter instead of through it and, as a result, not all of the air will be filtered. However, before completing this step, it's important to understand the difference between nominal and actual filter sizes. Nominal sizes refer to standard industry sizes that are used as a reference point when ordering filters online or from a store. Actual sizes refer to measurements taken from an existing filter or from an appliance manufacturer's specifications.

Choosing an appropriate-sized air filter for your AC unit is essential for optimal energy efficiency and appliance performance. It's important to measure your existing filter before ordering a new one so that you get one that fits properly in your unit. If you're looking for an easy way to find out what size air filter you need for your AC unit, there are several online resources available that can help you find out what size you need quickly and easily. In conclusion, selecting an appropriate-sized air filter for your AC unit is essential for optimal energy efficiency and appliance performance.

It's important to measure your existing filter before ordering a new one so that you get one that fits properly in your unit.

Catherine Plessner
Catherine Plessner

Devoted bacon trailblazer. Subtly charming burrito aficionado. Infuriatingly humble coffee advocate. Certified foodaholic. Incurable sushi guru. Award-winning travel lover.