What is the primary role of insulation in an HVAC system?

The primary role of insulation in an HVAC system is to maintain temperature by preventing heat loss or gain. Insulation is a crucial component that minimizes the transfer of heat through walls, ducts, and ceilings. When insulation is properly installed, it helps keep heated air inside during the winter and prevents outside heat from warming up the interior in the summer. This temperature regulation not only enhances comfort but also contributes to energy efficiency, reducing the workload on heating and cooling systems and lowering energy bills.

While increasing resistance in ductwork, controlling humidity levels, and enhancing system visibility are important aspects of HVAC systems, they do not play the central role of managing thermal comfort and energy efficiency, which is fundamentally achieved through effective insulation. Thus, the focus on preventing heat loss or gain through insulation directly impacts the overall performance of HVAC systems.