Certified Apartment Maintenance Technician (CAMT) Practice Exam 2025 - Free CAMT Practice Questions and Study Guide

The primary indicator of air filter issues in an HVAC system is low airflow from vents. When air filters become dirty or clogged, they restrict the flow of air through the system. This can result in reduced airflow from the vents, making it noticeable that the HVAC system isn't functioning efficiently.

Improper airflow can lead to several problems, including decreased heating and cooling efficiency, higher energy costs, and potential damage to the HVAC components due to the increased workload required to push air through the blocked filter. Regular filter maintenance is essential to ensure proper airflow and system performance. In contrast, cold air output, strong vibrations, and sudden noise increases can indicate other issues within the HVAC system, such as problems with the compressor, ductwork, or other mechanical components.