What is a crucial consideration when installing underground ducts?

Moisture protection is a crucial consideration when installing underground ducts because moisture can lead to significant issues such as corrosion, mold growth, and deterioration of the duct materials. If moisture enters the ductwork, it can compromise the system's efficiency and performance, potentially leading to costly repairs and replacements.

In underground installations, ducts are often exposed to soil moisture and water from rainfall or groundwater, making it essential to use materials and sealing methods that prevent moisture ingress. Proper drainage, the use of waterproof materials, and protective coatings can help mitigate moisture-related problems.

While visibility, air quality control, and material durability are important considerations for duct installation in general, they do not carry the same level of critical importance as moisture protection for underground systems, where exposure to moisture is a direct and continual threat to the functionality and longevity of the ducts.