What is the primary purpose of insulation in exterior ducts?

The primary purpose of insulation in exterior ducts is thermal retention. Insulation plays a crucial role in maintaining the temperature of the air that flows through the ducts. By reducing heat loss in cold environments and minimizing heat gain in hot conditions, insulation helps to ensure that the HVAC system operates efficiently. Proper thermal retention leads to reduced energy consumption, enhanced system performance, and increased comfort levels within the conditioned space.

While factors like cost savings, structural support, and weather protection are relevant considerations, they are secondary to the main function of insulation, which is to manage thermal energy. Effective insulation directly contributes to the energy efficiency of HVAC systems and protects the integrity of air distribution by maintaining a consistent temperature within the ductwork.