Filtration in HVAC systems removes airborne particles like dust, pollen, and mold spores from circulating air. Filters capture contaminants before air is heated or cooled and redistributed, improving indoor air quality and protecting equipment from dirt buildup. Filter effectiveness is often measured by MERV rating, with higher ratings capturing smaller particles.
/fɪlˈtreɪʃən/
Filtration in HVAC systems removes airborne particles like dust, pollen, and mold spores from circulating air. Filters capture contaminants before air is heated or cooled and redistributed, improving indoor air quality and protecting equipment from dirt buildup. Filter effectiveness is often measured by MERV rating, with higher ratings capturing smaller particles.
What does HVAC filtration do?
It removes airborne particles before air is conditioned and recirculated, improving air quality and protecting equipment.
Source: The Cooling Company
Choose filters that balance air quality and airflow.
A family with allergies upgrades to a higher-MERV filter, reducing airborne irritants and keeping HVAC coils cleaner.
Replace filters every 1–3 months and confirm your system can handle higher-MERV options without restricting airflow.
“Replace filters every 1–3 months and confirm your system can handle higher-MERV options without restricting airflow.”
HEPA filters can capture 99.97% of particles as small as 0.3 microns.
What MERV rating should I use?
Most homes do well with MERV 8–11, but check system specs before going higher.
Can better filtration reduce allergies?
Yes. Higher-quality filters capture more allergens and improve indoor air quality.
How often should filters be replaced?
Typically every 1–3 months depending on filter type and usage.
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