How often do you need to change your AC filter during the summer season?

Knowing how often to change the AC filter is key to decreasing the strain on your system. How often to replace your air filter is based on several factors, such as the home’s size, the type of filter, and if you have any indoor pets. Most filters need to be changed every few months, but you may need to switch them out more often if you suffer from allergies or if you have young kids in your home.

What is the Role of an AC Filter?

The AC filter in your home acts as a barrier by ensuring that only clean air circulates within your indoor space. An air filter traps dust, allergens, pet hair, and other air pollutants, which significantly improves your home’s air quality. However, a dirty filter can lead to a variety of issues, from decreased efficiency and increased energy bills to poor air quality.

The Importance of Regular AC Filter Replacement

Routine AC maintenance is key to keeping your air conditioner working at its optimal level. One way to optimize your air conditioner is to switch out your air filter. A clogged filter reduces airflow, which forces your air conditioning unit to work harder.

This extra strain could lead to costly repairs or even a complete AC replacement. Plus, when your system works harder, it uses more energy, resulting in higher energy bills.

A dirty AC filter can even adversely affect your indoor air quality. If not replaced regularly, the accumulated pollutants may start passing through the filter, causing a decline in the air quality in your home. Over time, this could trigger allergies and other breathing issues. Staying proactive by replacing your air filter every two or three months is often the best choice.

How Often Should I Change My AC Filter During the Summer?

During the summer, when your AC is working overtime, it’s vital to change your air filter more frequently. The standard recommendation for fiberglass filters, one of the most common types of filters, is to change the filter every 90 days. In the hotter months, when your heating and cooling systems are in heavy use, you should check your AC filter monthly.

If it’s visibly dirty or clogged, replace it immediately. Even if it appears clean, it’s good practice to replace your AC filter at least once every 30-45 days during the summer. Remember, the health of your HVAC air filter significantly impacts the efficiency of your air conditioning system.

Factors Affecting the Frequency of Filter Changes

Although we’ve provided a general guideline, keep in mind that every home is unique. How often you’ll need to change your AC filter also depends on various factors.

Size of Your Home

A larger home has more air passing through the filter, meaning it will likely need to be replaced more often. On the other hand, a smaller home might get away with less frequent changes.

Air Quality

If your home has poor air quality due to its location or has several sources of dust, you will likely need to change your filters more often.


Pet hair can quickly clog your AC filter. If you have pets, consider changing your AC filter more frequently.

Type of Filters

Different filters have different lifespans. Pleated air filters, for example, usually last longer than fiberglass filters and might only need to be replaced every 3–6 months.

Additional Things to Consider About How Often to Change AC Filter

Understanding how often to change the AC filter in the summer is critical for maintaining your air conditioner’s efficiency and your home’s air quality. Not only can frequent filter changes help reduce energy bills and costly repairs, but they also play a role in creating a much healthier indoor environment. Remember to check your filters regularly, especially during the summer months.

Despite the benefits of regular filter changes, it’s only one aspect of proper AC maintenance. So, don’t forget to schedule regular maintenance appointments with professionals. An expert can thoroughly inspect your system, spot potential issues early, and ensure that your air conditioning is ready to keep you cool all summer long.

Need AC Maintenance Services? Give Carr AC a Call Today!

Carr Air Conditioner offers AC repair, AC installation, and AC maintenance for customers in Clearwater and the surrounding areas. Our experienced team can answer any of your AC questions as we strive to provide the best service for maintaining HVAC systems.

Feel free to contact Carr AC at (727) 447-7212 today to learn more about our services!

We also serve:


Palm Harbor