The answer to 'how often to replace ductwork' is that the ductwork in your home should generally be replaced every 10-15 years, depending on the condition and usage. Ductwork can become worn, damaged, or inefficient over time, leading to air leaks, reduced airflow, and decreased HVAC system performance.
Regular maintenance and inspections can help extend the lifespan of your ductwork, but eventually, it will need to be replaced. Signs that it's time to replace your ductwork include visible damage, excessive dust or debris, and increased energy bills due to air leaks. When replacing ductwork, it's best to hire a professional HVAC technician to ensure the job is done correctly and efficiently.