How to replace an air conditioner air filter Category

When it comes to maintaining your air conditioner, the air filter is the thing that you need to pay the most attention to. All elements of the air conditioner need regular maintenance, but the filter needs to be cleaned at least a couple times a year and sometimes needs to be replaced. If the filter falls into disrepair and is left as is, it can let dirt and air pollutants enter the home, which can be damaging to your health and eventually cause your air conditioner to break down.


If your filter is in need of replacement, here are the steps to take.

Step 1: Locate the filter compartment in your air conditioner. Sizes vary, but you should be able to find the filter side noted somewhere on the unit. If not, take measurements yourself.

Step 2: Head to the hardware store and find a replacement filter that is the same size as the old one. There are different filters to choose from, ranging from simple inexpensive spun glass ones to slightly more pricy filters made of polyester. If you live in a warmer climate with a lot of dust, you may want to invest in a high-efficiency filter that captures more of the dust particles. Also consider filters that are designed to kill bacteria and stamp out allergens.

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Air conditioner filters can get dirty fast, especially if you have pets or if you run your air conditioner on a daily basis. During the warm months when your air conditioner gets the heaviest use, it’s usually a good idea to clean the filter at least once a month. At the bare minimum, it should be cleaned at the start of each warm season.


Although many air conditioner owners wash their filters simply by running them under water and letting them dry, this is not actually the best way to do it. Because things like bacteria and allergens, which are not visible to the naked eye, can build up in an air conditioner filter, it’s best to use more thorough cleaning mechanisms than simple warm water. Here’s how to best clean your filter.

Step 1: Remove the filter from the unit. It should be easy to remove either by pulling it out from the side or opening the little hatch that holds it in place.

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