HEPA Filtration

No Matter Your Industry, HEPA Filtration Improves Indoor Air Quality

Building managers in various industries have a lot of tasks to oversee, including everything from ensuring elevators are working to lighting and electrical maintenance.

But perhaps no task is more important than maintaining the building’s air filtration system. In industries where workers are involved in labor-heavy tasks or craftsmanship, air quality levels are hugely important. For example, welding and cutting stones and concrete result in fine particles being thrown into the air.

Without the appropriate ventilation systems or filters, these particles can gradually become dangerous to individuals who inhale them on a consistent basis. Lung cancer, kidney disease, and other illnesses are only some of the dangers these workers face as a result of these particles being in the air. Even office environments can be subject to dirtier air than one might imagine.

Air filters are only one component of keeping workers safe and healthy. To help ensure the cleanest air possible, worksites and offices should be outfitted with HVAC HEPA filtration systems.

What is HVAC HEPA Filtration?

Short for high-efficiency particulate air, HEPA filters are among the best a building manager can install and utilize.  Manufacturers of HEPA filters must meet strict requirements for the filters to be classified as such.

The U.S. Department of Energy requires HEPA filters to capture 99.7 particles larger than 0.3 microns. Air particles are caught through either interception, impaction, or diffusion.

Where can it be used?

The best aspect of Hospital HVAC HEPA filtration systems is the number of places they can be used. Cars and airplanes have them, but so too do a number of important pieces of infrastructure.

HVAC HEPA filtration is prominent in manufacturing plants, offices, and perhaps most importantly, medical buildings. Hospitals, even the enclosed areas patients are kept in if they are contagious, are filled with allergens, germs, and other particles dangerous to an individual’s health. HVAC HEPA filtration is an important defense that ensures hospital staff and visitors don’t contract serious diseases.

But as the days and months pass, HEPA filters will need to be replaced. If not, their effectiveness wears out.

As such, HEPA filters should be checked every six to 12 months for efficiency. Otherwise, new HEPAs will need to be installed.

Companies and building managers looking to improve the air quality should utilize HVAC HEPA filtration. Doing so can help eliminate and catch dangerous allergens and pathogens. By contacting Air Impurities Removal Systems, companies can utilize HVAC HEPA filtration no matter the industry.

Should My Air Filtering Unit Include UV?

Claims for using UVC Air Filtration in Air filtering units to fight Covid-19 dismissed by science

While using Ultraviolet light has been used to stop pathogens like Covid-19, its effective use requires dosage controls that are not possible in typical air cleaning units. In addition, Ultraviolet light when improperly used can be extremely dangerous to human skin and eyes.

Research from Consumer Reports indicates that there is no evidence to prove that UV light in-home use and commercial-grade air purifiers kill the Covid-19 virus.

“Some air purifiers claim to kill viruses using UV light or some kind of photocatalysis technology,” says John Galeotafiore, a director of testing at CR. “We suggest consumers take these claims with a grain of salt because there isn’t enough concrete evidence yet that proves they work in these settings.”

Research from Live Science indicates that very specific and controlled use in medical settings is effective.

Ultraviolet light has been used to eliminate pathogens for decades and is effective against SARS-CoV-2, the virus behind the pandemic.

But it takes the right kind of UV in the right dosage, a complex operation that is best administered by trained professionals. In other words, many at-home UV-light devices claiming to kill SARS-CoV-2 likely aren’t a safe bet.

“UVC has been used for years, it’s not new,” Indermeet Kohli, a physicist who studies photomedicine in dermatology at Henry Ford Hospital in Detroit, told Live Science. UVC at a specific wavelength, 254 nanometers, has been successfully used to inactivate H1N1 influenza and other coronaviruses, such as a severe acute respiratory virus (SARS-CoV) and Middle Eastern Respiratory Syndrome (MERS-CoV), she said. A study published June 26 to the preprint database medRxiv from Kohli’s colleagues awaiting peer review now confirms that UVC air filtration also eliminates SARS-CoV-2.

UV radiation can be classified into three types based on wavelength: UVA, UVB, and UVC. Nearly all the UV radiation that reaches Earth is UVA because most UVB and all of UVC light is absorbed by the ozone layer, according to the Centers for Disease Control and Prevention. And it’s UVC, which has the shortest wavelength and the highest energy, that can act as a disinfectant.

“The data that backs up this technology, the ease of use, and the non-contact nature of UVC air filtration makes it a valuable tool amid the pandemic, ” Kohli said. But responsible, accurate use is critical. UVC’s DNA-damaging capabilities make it extremely dangerous to human skin and eyes, Kohli said. She cautioned that UVC air filtration and disinfection technologies should primarily be left to medical facilities and evaluated for safety and efficacy by teams with expertise in photomedicine and photobiology.

When it comes to a home UVC air filtration lamps, their ability to damage skin and eyes isn’t the only danger, Dr. Jacob Scott, a research physician in the Department of Translational Hematology and Oncology Research at Cleveland Clinic, said. These devices also have low-quality control, which means there’s no guarantee that you’re actually eliminating the pathogen, he said.

“UVC does kill the virus, period, but the issue is you have to get enough dose,” Scott told Live Science. “Particularly, for N95 masks, which are porous, it takes a pretty big dose of UVC-254 nm to eliminate SARS-CoV-2. This kind of accuracy isn’t possible with at-home devices.

In hospitals, the geometry of the room, shadowing, timing, and the type of material or object being disinfected are all accounted for when experts determine the right level of UVC air filtration that’s needed to kill pathogens. But that kind of “quality assurance is really hard out in the world, out in the wild,” Scott said. At-home devices don’t offer that kind of precision, so using them could offer a false assurance that SARS-CoV-2 has been eliminated when it hasn’t, he noted. “Having something you think is clean, but it’s not, is worse than something that you know is dirty ” because it affects your behavior toward that object, he said.