The High Efficiency Particulate Air, or HEPA, filter, was developed to shield scientists from radiation as they worked on an atomic bomb during World War II. Today these filters are frequently used in hospitals, science labs and even homes.
HEPA filters are rated to extract 99.97 to 99.99% of particles measuring 0.3 microns and larger. This includes pollen, dirt and dust. A HEPA air cleaner with activated carbon filters can capture chemicals, odors and smoke.
These filters have a MERV rating of 1721, depending on the kind. This rating indicates how successfully a filter can pull out pollutants from the air.
Because of their high-efficiency filtration capabilities, HEPA filters are deep and can restrict airflow. It’s important to ask Donelson Air Service Experts to confirm your heating and cooling system can handle one.
Media air cleaners are sturdier than regular air filters. They’re often four to five times wider—or more. This barrier mounts tightly against your HVAC equipment.
Because its operational surface is usually around 10 inches, media filters are able to catch about 95 percent of particulates.
These filters work longer too, commonly between three to six months.
There are a few electronic filtering systems you can add in your home.
An electrostatic filter uses magnetically charged material to attract. These washable filters are 97 percent effective at clearing tiny particles from your home’s air. Plus, they’re also 30 times more effective than regular filters.
An electronic air cleaner applies a high-voltage magnetic charge to trap particles.
Some can eliminate the majority of indoor air pollutants—particles, germs, bacteria, chemical odors and vapors—by up to 99.9 percent. And reduce ozone, a known lung irritant, made elsewhere in your home.