The High Efficiency Particulate Air, or HEPA, filter, was developed to protect 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 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 trap chemicals, odors and smoke.
These filters have a MERV rating of 1721, depending on the brand. This rating shows how well a filter can clear pollutants from the air.
Because of their high-efficiency filtration capabilities, HEPA filters are thick and can reduce airflow. It’s important to ask Finch Air Conditioning & Heating to confirm your heating and cooling system can work with one.
Media air cleaners are much thicker than common air filters. They’re often four to five times wider—or more. This barrier mounts tightly against your HVAC equipment.
Because its functional surface is usually around 10 inches, media filters are able to catch about 95 percent of particulates.
These filters stay fresher longer too, typically between three to six months.
There are several different types of electronic filtering systems you can add in your home.
An electrostatic filter uses magnetically charged substance to attract. These washable filters are 97 percent effective at removing tiny particles from your home’s air. Plus, they’re also 30 times more effective than ordinary filters.
An electronic air cleaner involves 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 minimize ozone, a known lung irritant, made elsewhere in your home.