HVAC Excellence Commercial Air Conditioning ESCO Certification Practice Exam 2026 - Free ESCO Certification Practice Questions and Study Guide

The function of a filter in an air conditioning unit is primarily to remove dust, allergens, and other particles from the air. This is crucial not only for maintaining indoor air quality but also for protecting the HVAC system itself. By capturing these contaminants, filters prevent them from entering the air distribution system, where they could potentially lead to respiratory issues for occupants or contribute to system malfunctions by clogging components.

Clean filters improve the overall efficiency of the HVAC system because they allow for unobstructed airflow, enabling the system to operate effectively. This filtration process plays an essential role in ensuring that the air circulating within a building is clean and safe, contributing to a healthier environment for all occupants.