What type of filtration system is commonly used in HVAC systems to enhance air quality?

HEPA filters, or High-Efficiency Particulate Air filters, are recognized for their effectiveness in capturing a wide range of airborne particles, including dust, pollen, pet dander, and even some bacteria and viruses. They are designed to trap at least 99.97% of particles that are 0.3 microns in diameter, which is the most penetrating particle size. This high efficiency makes them a popular choice in HVAC systems focused on enhancing indoor air quality, especially in settings where cleanliness and air purity are crucial, such as hospitals and labs.

While carbon filters are effective for removing odors and certain gases, their primary function is not particle filtration but rather gas adsorption. UV filters use ultraviolet light to kill or inactivate microorganisms, but they do not filter out larger particles from the air. Standard polyester filters, while offering some level of filtration, typically do not provide the same level of efficiency as HEPA filters and are often less effective at capturing smaller particles. Thus, HEPA filters stand out as the superior option for improving air quality in HVAC systems.