What is the primary purpose of an air filter in an HVAC system?

The primary purpose of an air filter in an HVAC system is to remove particles from the air. Air filters are designed to capture dust, pollen, pet dander, mold spores, and other airborne contaminants, improving indoor air quality. This is essential not only for maintaining a clean environment but also for protecting the HVAC equipment itself, as a clean system operates more efficiently and has a longer lifespan. By filtering out particulates, air filters help ensure that the air circulated throughout a building is healthier for the occupants, reducing respiratory issues and allergies.

While increasing temperature control, boosting system efficiency, and reducing noise levels can be benefits of proper filtration and system maintenance, they are not the primary function of the air filter itself. The core goal remains focused on removing impurities from the air supply.