– Higher Energy Costs: The need to bend around obstacles and fit into tight spaces can restrict airflow, requiring more energy to circulate air and potentially leading to increased energy bills.

– Less Durable: Compared to metal ducts, flexible ducts are made with less durable materials that are more susceptible to wear and tear over time, necessitating more frequent repairs and replacements.

– Shorter Lifespan: While metal ducts can last over 25 years with proper care, flexible ducts have a lifespan that does not exceed 20 to 25 years, even with regular maintenance.