4 Key Things to Know About HEPA Filters

4 Key Things to Know About HEPA Filters

When it comes to HVAC air filtration, HEPA (high-efficiency particulate air) filters are on another level. Their MERV (minimum efficiency reporting value) rating goes beyond 16, whereas those of standard filters range from 1 to 4 only.

Despite being the best air filtration product, McLay’s plumbing and HVAC experts don’t recommend HEPA filters in all cases. Read on to learn why.

HEPA Filters Can’t Catch It All

A HEPA filter can remove over 99% of contaminants in the air that are 0.3 microns larger. In other words, it can almost completely clean indoor air. The operative word here is “almost.”

The superior efficiency of a HEPA filter is still not good enough to trap viruses, bacteria, mold spores and volatile organic compounds (VOCs). Nevertheless, it can trap allergens such as dust, animal dander and pollen, providing relief to asthma sufferers and other sensitive individuals.

HEPA Filters May Not Meet Government Standards

Read what the label says before making a purchase. While the Department of Energy has qualifications to separate the good products from the bad, HEPA filter production is not subject to strict regulation.

To compare products properly, look for either of these terms: “Absolute HEPA” or “True HEPA.” Manufacturers that voluntarily test and certify their filters but fail to meet government standards are only allowed to the use labels “HEPA-style,” “HEPA-type,” or “HEPA-like.”

HEPA Filters May Require Replacement More Often

As mentioned, HEPA filters can clear more than 99% of pollutants from the air. As a consequence, they get dirty more quickly and require maintenance more frequently, which means they need changed out about twice as often as non-HEPA filters.

HEPA Filters Are Not Compatible With Some HVAC Systems

The more efficient an air filter is, the more it decreases airflow. Severe airflow restriction may cause your HVAC system to run inefficiently or break down. Seek expert advice before buying a HEPA filter for your home.

Contact Us If You Have Concerns About HVAC or Plumbing in San Dimas

Every McLay plumbing and HVAC expert can provide reliable advice on improving your home’s systems. Call McLay Services at (909) 392-2202 now to discuss your air conditioner and furnace filter options and receive a free estimate.