How often should I replace my HVAC air filters?

The best practice is to change your HVAC air filters every 1 – 3 months, depending on how often you’re running your heating and cooling systems. The two main reasons why you need to replace your HVAC air filters regularly are:

  1. Improved indoor air quality – Your HVAC air filters trap the airborne particles in your air—such as dust, mold spores, allergens, bacteria, and more—and keep them from being circulated in your home. However, if you have a dirty, clogged filter, it can’t catch those harmful particles which can lead to reduced indoor air quality and negative health effects for your family.
  2. Improved heating and cooling system performance – One of the main benefits of having clean HVAC air filters is the improved performance for your heating and cooling systems. If the filters are clogged and dirty, they restrict the airflow in your system, thus making it more difficult to circulate the air in your home and requiring your HVAC systems to work harder.

Why can’t I just clean out my HVAC air filters?

Many people ask us why they can’t just clean out their HVAC air filters, and the answer is simple: the majority of reputable HVAC experts will agree that washable, reusable air filters can be dangerous for your home. If they are not cleaned and dried properly, it can lead to mold growth—the last thing you want when it comes to filtering the air in your home.

If you want to learn more about replacing your HVAC air filters or you have questions about your heating and cooling system performance and indoor air quality, call Dowd’s Mechanical, Heating & Air Conditioning today at 215-607-6448 or contact us online!