What size air conditioner filter do I need? This is a question that many homeowners ask, especially during the summer months. The answer depends on the size of your air conditioner and the type of filter you have. Keep reading to learn more about air conditioner filters and how to choose the right size for your home.

How can you choose the right air filter?


When it comes to changing air conditioner filters, the most important factors are the type and size of the filter. The size of the filter you need depends on the unit itself. If you have a window unit, then the filter will be in the front panel. If you have a central unit, then the filter will be in either the return air duct or the furnace cabinet.

The size of your air conditioner filter is important because it affects how well your unit can cool your home. A dirty or clogged filter makes your unit work harder and can decrease its efficiency. This means that your air conditioner will not be able to cool your home as well as it could if the filter was clean. It may also cause your air conditioner to break down sooner than it would otherwise.

In order to determine what air conditioner filter you need, you first need to know what type of filter it is. There are three types of filters: disposable filters, washable filters, and permanent filters. Disposable filters come in a variety of sizes and should be replaced every month or so, depending on how often you use your air conditioner. Washable filters can be cleaned with soap and water and should last for about six months before they need to be replaced. Permanent filters usually only need to be replaced once a year or when they start to become clogged.

Once you know what type of filter you have, you can find its dimensions online, in the manual for your air conditioner, or by measuring the filter. Then all you have to do is find a filter with similar dimensions.

How do you measure your air filter size?

When looking to buy a new air filter, size is an important factor to consider. The size of the filter is determined by the dimensions of the opening where the filter will be placed. Buying a filter that is too small will not allow for proper airflow and could cause your AC unit to work harder than necessary, leading to decreased energy efficiency and higher utility bills. Conversely, buying a filter that is too large could lead to blocked airflow and reduced performance.

To determine which size air conditioner filter you need, measure the width, length, and depth of the opening where the filter will be placed. If you have difficulty measuring and finding the correct size, a professional HVAC technician can help with this.

What if you don’t have an air conditioner filter?


If you don't have an air filter, the consequences can be dire. AC units work by sucking in hot air from a room and blowing out cold air. The hot air is filtered through the air filter before it's cooled and blown back into the room. If you don't have a filter, the hot air will bring airborne particles inside of your air conditioner, which will cause it to break down sooner. Additionally, without an air conditioner filter, your home will be filled with dust and other allergens that will impact your indoor air quality.

How often should you change your air conditioner filter?

One of the most important things you can do to keep your air conditioner running smoothly is to change the air filter regularly. How often you need to change your air conditioner filter depends on the type of filter you have and the amount of use your air conditioner gets. A general rule of thumb is to change your air conditioner filter at least every three months if it's a disposable filter. If you live in an area with a lot of pollen and dust or if you have a few pets, you might need to change it more often.

Selecting the right type and size of air filter for your home is important. Your filter ensures that your system is running smoothly and that your indoor air is clean. Choosing the correct filter is necessary to make sure that the unit functions properly and efficiently.