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 often used in hospitals, science labs and even homes.
HEPA filters are rated to take out 99.97 to 99.99% of particles measuring 0.3 microns and greater. This includes pollen, dirt and dust. A HEPA air cleaner with activated carbon filters can catch chemicals, odors and smoke.
These filters have a MERV rating of 1721, depending on the brand. This rating shows how well a filter can pull out pollutants from the air.
Because of their high-efficiency filtration abilities, HEPA filters are thick and can limit airflow. It’s important to ask McElroy Service Experts to confirm your heating and cooling system can handle one.
Media air cleaners are denser than basic air filters. They’re often four to five times wider—or more. This barrier mounts tightly against your HVAC system.
Because its functional surface is usually around 10 inches, media filters are able to catch about 95 percent of particulates.
These filters work longer too, usually between three to six months.
There are several different types of electronic filtering systems you can install in your home.
An electrostatic filter uses magnetically charged components to catch particles. 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 everyday filters.
An electronic air cleaner uses 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 decrease ozone, a known lung irritant, produced elsewhere in your home.