An air filter is a crucial component of HVAC systems that traps dust, pollen, bacteria, and other airborne particles from circulating air. It improves indoor air quality and protects HVAC equipment from debris buildup. Filters vary by material and efficiency, often measured by a MERV rating.
/ˈɛər ˈfɪltər/
An air filter is a crucial component of HVAC systems that traps dust, pollen, bacteria, and other airborne particles from circulating air. It improves indoor air quality and protects HVAC equipment from debris buildup. Filters vary by material and efficiency, often measured by a MERV rating.
What does an air filter do in an HVAC system?
An air filter captures dust and airborne particles so they don’t build up in the system. This protects equipment and keeps indoor air cleaner.
Source: The Cooling Company
Filter type and MERV rating determine how much debris is captured.
Homes with allergy sufferers often use higher-efficiency filters, while standard filters may focus on protecting equipment from larger debris.
Check and replace your HVAC filter at least every 90 days, or more often if you have pets, allergies, or live in a high-pollution area.
“Check and replace your HVAC filter at least every 90 days, or more often if you have pets, allergies, or live in a high-pollution area.”
Regularly changing your air filter can reduce your air conditioner’s energy use by 5% to 15%, according to the U.S. Department of Energy.
How often should I change my air filter?
Most homes should change filters every 60 to 90 days. Homes with pets, allergies, or high dust may need monthly changes.
Is a higher MERV filter always better?
Not always. Very high MERV filters can restrict airflow on some systems. Choose the highest rating your system can handle.
What happens if I don’t change the filter?
A clogged filter reduces airflow, increases energy use, and can strain or damage HVAC components.
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