What type of filter is primarily used to improve air quality in HVAC systems?

The HEPA filter, or High-Efficiency Particulate Air filter, is specifically designed to capture a very high percentage of airborne particles, making it a popular choice for improving air quality in HVAC systems. It is capable of trapping particles that are 0.3 microns in size with an efficiency of 99.97%, which includes common allergens, dust, pet dander, pollen, and even some bacteria and viruses.

The design of the HEPA filter facilitates a high air flow while still maintaining a high level of filtration. This is crucial in HVAC systems where maintaining air quality is essential for the health and comfort of occupants. The use of HEPA filters is particularly emphasized in environments requiring stringent air quality standards, such as hospitals and clean rooms, where reduced contamination is critical.

While other filter types like electrostatic filters, activated charcoal filters, and traditional fiberglass filters serve their purposes, they do not provide the same level of particle capture efficiency or effectiveness against pathogens as HEPA filters do. Electrostatic filters can attract some particulates but may not have the same retention efficiency as HEPA. Activated charcoal filters are excellent for removing odors and gases but are not designed for particulate filtration. Traditional fiberglass filters have a porous construction that allows for air