The answer to 'why is my ductwork high energy bills' is that leaky, damaged, or improperly installed ductwork can lead to significant energy losses and higher utility bills. Ductwork that is not properly sealed or insulated allows conditioned air to escape, forcing your HVAC system to work harder to maintain the desired temperature in your home.
Common symptoms of ductwork issues include uneven heating/cooling, rooms that are difficult to heat or cool, and higher than normal energy bills. Solutions may include sealing ductwork joints and seams with mastic or metal tape, insulating exposed ductwork, and ensuring proper airflow and system balancing. While some minor ductwork repairs can be a DIY project, it's generally recommended to have a professional HVAC technician inspect and service your ductwork to ensure it is functioning efficiently.