The High Efficiency Particulate Air, or HEPA, filter, was designed to keep scientists safe 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 remove 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 capture chemicals, odors and smoke.
These filters have a MERV rating of 1721, depending on the model. This rating demonstrates how effectively a filter can pull out pollutants from the air.
Because of their high-efficiency filtration performance, HEPA filters are deep and can reduce airflow. It’s important to check with All American Air Service Experts Heating & Air Conditioning to make sure your heating and cooling system can work with one.
Media air cleaners are sturdier than common air filters. They’re often four to five times wider—or more. This barrier fits tightly against your HVAC unit.
Because its active surface is usually around 10 inches, media filters are able to trap about 95 percent of particulates.
These filters stay fresher longer too, commonly between three to six months.
There are a few electronic filtering systems you can use in your home.
An electrostatic filter uses magnetically charged components to attract. These washable filters are 97 percent effective at extracting 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 remove 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, produced elsewhere in your home.