Which HVAC component is most directly affected by duct sealing?

The air handler is the HVAC component most directly affected by duct sealing. The air handler is responsible for circulating air throughout the ductwork of the HVAC system. When ducts are unsealed or have leaks, the efficiency of the air handler is compromised, as conditioned air can escape into spaces that are not part of the intended air distribution system. This results in less efficient temperature control and increased energy usage, as the air handler must work harder to maintain the desired temperature in the living spaces.

Duct sealing improves the overall performance of the HVAC system by ensuring that the air being moved by the air handler reaches its intended destinations without loss. Proper sealing contributes to better airflow, energy efficiency, and improved indoor air quality, which are all critical for the effective operation of the air handler and the overall HVAC system.