The answer to 'why is my air duct sealing' is that air duct leaks are a common problem that can lead to inefficient HVAC performance and higher energy costs. Leaks in the ductwork allow conditioned air to escape, making your HVAC system work harder to maintain the desired temperature in your home.
Some common causes of air duct leaks include poor installation, damage from pests or other impacts, and deterioration over time. Symptoms can include uneven temperatures, high energy bills, and excessive dust or allergens in the home. Solutions may involve sealing the ducts with mastic or metal tape, or in some cases, replacing sections of the ductwork.