The average lifespan of HVAC ducts is between 20 and 25 years, but they can start to show signs of wear and tear after 15 years. This can significantly reduce the efficiency of your air conditioning system, so it's best to replace them before this point. Generally, ducts are made from a combination of materials such as fiberglass and plastic, and they usually last for 10 to 15 years. Regular maintenance of your HVAC system is essential for ensuring good air quality and optimal efficiency. If your ductwork isn't properly maintained, you may need to repair or replace it.
The National Air Duct Cleaners Association (NADCA) recommends replacing ducts every 10 to 15 years. However, certain circumstances may require an earlier replacement. It's important to hire the right commercial HVAC maintenance company to make sure that the key components of your HVAC system are not neglected. This will help you avoid costly repairs and replacements in the future.