Which symptom may indicate a blockage or restriction in the air filtration system?

A symptom that may indicate a blockage or restriction in the air filtration system is reduced air flow. When the filtration system, including filters, ducts, or vents, becomes blocked or restricted, the system struggles to move air effectively. This leads to a noticeable decrease in the volume of air circulating through the HVAC system, making it a clear indicator of potential issues.

In this context, understanding air flow dynamics is crucial for HVAC performance. Adequate air flow is necessary for the system to maintain efficiency, effectively heat or cool spaces, and prevent strain on the equipment. By diagnosing reduced air flow early, technicians can address filter changes, duct cleaning, or other necessary repairs, thereby enhancing system performance and longevity.