How often you need to change your air filter depends on your family’s needs and the type of filter you use. Here are a few other factors you’ll need to consider:

  • If you use a flat or pleated filter
  • If someone in your home has allergies or asthma
  • If you have pets

Basic flat filters are the most common type of filter. These filters only provide the minimum level of filtration to keep dust out of your system. So, you’ll want to change them every 30–60 days. Thick, pleated filters should be changed every 90 days.

If you’re unsure of whether your filter needs to be changed, hold it up to the light. If you can’t see light through it, it’s time to put in a new one.

These averages can also help you determine when to replace the air filter in your home:

  • You live alone and don’t have pets or allergies: every 6–12 months
  • You have a family but no pets: every 90 days
  • Your family has one dog or cat: every 60 days
  • Your family has more than one pet or has someone who suffers from allergies: every 20¬–45 days

If you’re tired of changing your filter frequently or are looking for ways to reduce allergy symptoms, ask AC Mechanical about options to include for your home’s indoor air quality. Some filters might not be compatible with your system and may restrict airflow. So, it’s important to check with an HVAC professional first.