When installing an AC system in an attic what is required?

• A. Insulated Duct Work
• B. Uninsulated Duct Work
• C. Ceiling Fans
• D. Portable AC Unit

Answer: (A)

Duct insulation is essential when the AC system’s ducts run in an attic. The attic is a hot environment, so insulating the ducts minimizes heat transfer from the surrounding air into the conditioned air traveling through the ducts. This helps maintain the desired indoor temperature, reduces energy consumption, and lowers the chance of condensation on cold duct surfaces in a humid space. These benefits align with typical installation requirements in attics. The other options aren’t part of the standard installation: ceiling fans or portable units may aid comfort but aren’t required components of a fixed attic system, and uninsulated duct work would undermine efficiency and lead to comfort and moisture issues.