As a homeowner, you’re likely concerned about the quality of the air in your home. That’s why professional AC repairmen often recommend installing high- efficiency particulate air filters. Also known as HEPA filters, they’re often used for filtering air to medical-grade standards. They can trap 99.97% of airborne particles as small as 0.3 microns, as well as 95% of those particles as small as 0.1 microns.
More Filtration Isn’t Always Ideal
Filter efficiency is rated by the minimum efficiency reporting value system, or MERV. This ranges from 1 to 16. The higher the rating, the more effective the filter is at safeguarding your indoor air quality. Standard panel filters have MERV ratings from 1 to 4 and generally remove air particles no smaller than 3 to 10 microns. However, HEPA filters exceed MERV 16.
As filtration efficiency increases, so does restriction to system airflow caused by the filter. Airflow restriction imposed by in-duct HEPA filters in residential air conditioning systems decreases energy efficiency, reduces performance and can actually diminish indoor air quality by causing pressure imbalances. Consult with your trusted HVAC contractor to learn which type of air filter is ideal for your home.
HEPA Filter Options
Our team at AAA Air Conditioning, Inc. can measure your system’s airflow and tell whether it can accommodate in-duct HEPA filtration. As an alternative, we can also install an external HEPA filter. This is connected to the main AC ductwork by a smaller bypass duct. A blower in the filter draws air out of the main duct, pushes it through the HEPA filter, then loops the filtered air back into the main airflow. This works just as well as an in-duct system since it continuously filters a percentage of the household airflow to HEPA standards without restricting air volume through the duct.
When you need a professional to install a HEPA filter system in your home, there’s only one HVAC company you can rely on. Call AAA Air Conditioning, Inc. today at (361) 578-3846 or fill out our online contact form to get started.