How Often to Change AC Filters in Summer

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How Often to Change AC Filters in Summer

A clean air filter is crucial in maintaining good indoor air quality and optimal AC system performance. However, how frequently you should replace it depends on several factors. The air quality of your home, the presence of pets, and whether there are allergy or asthma patients in your family, all play a part. The rate at which a filter clogs can also be influenced by the size of your home and the frequency with which your air conditioning system runs. In places with extreme heat, the AC kicks on more frequently and needs more regular filter changes.

Factors Affecting How Often Should You Change Your Air Filter

Air filters keep your home free of allergens and pollutants, but a filter's life depends on many factors, including who and what's in your home.

Consider the following factors for changing filters:

  • Air Quality: Smoking, candles, fireplaces, cooking, and cleaning agents can result in poor air quality. If so, change your filter at least once every 30 days.
  • Allergy or Asthma: Use a 12-16 MERV filter, and check monthly for better air quality.
  • Pets: Change filter frequently if there are animals, because of the dander, hair, and outdoor contaminants they bring inside. Do this monthly if you have more than one pet.
  • Home Size: Bigger homes move more air, clog filters more quickly, and require more frequent.
  • Usage: In hot regions, frequent use of the air conditioner calls for a more frequent filter change.

Finding the Replacement Schedule

Take your filter out once a month and hold it up to bright light. If there is no light showing through the filter, you definitely need a new one. Regular thin fiberglass filters can even require monthly replacements. More efficient models, such as some pleated filters, can last up to three months. They also help keep indoor air clean, which thin flat-panel fiberglass filters can't do.

Follow the manufacturer's guidelines for the best filter replacement schedule for your home. Your filter requires more frequent replacement if you have pets, smoke, or live close to a pollution source like a highway or farmland.

Different Types of Filters

Filters have ratings based on their ability to collect dust and other airborne particles. The more particles a filter can trap from the air, the higher the MERV rating. High-MERV air filters require more frequent replacement because they catch more dust and airborne particles and clog more quickly.

For your filter, which is thinner than two inches, here are some general recommendations:

  • MERV 1-4 Filters: Replace every 2 to 3 months
  • MERV 5-8 Filters: Replace every 1 to 2 months
  • MERV 8 or Higher: Inspect monthly and replace when dirty

If your filter is thicker than two inches, it's generally acceptable to replace it after a longer duration. But if you're in doubt, always refer to the recommendations from your air filter manufacturer or ask an HVAC technician.

Air Filter Maintenance Tips

  • Invest in a higher-quality filter for improved dust and allergen removal.
  • For a big, busy family, change your air filter every 1-3 months.
  • If you have pets, replace them more often.
  • Monitor your filter and change it even before three months if you notice clogging.
  • Having air filter backups on hand allows for easy replacements.
  • If allergies are a concern, change filters more often for better air quality.

Conclusion

Regularly changing your AC filter is essential to ensure your cooling system stays effective and keeps your indoor air clean. How often you should replace it, however, will depend on factors such as indoor air quality, how many pets you have in your home, and whether anyone has allergies or asthma. Other factors that can affect the lifespan of the filter are the size of your home and how often you run the AC. If your climate is hot enough that your air conditioning runs 24/7, it's more important to check the filter regularly. So keep these pointers in mind to ensure that you have a clean house and your AC systems run smoothly! These factors help you figure out how often you should change your AC filter in the summer.

At Superior Air Management (Athens, GA), from AC maintenance to filter changes, our experts will ensure your home is comfortable throughout the summer!

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