Ducts in most homes have a lifespan of 10 to 15 years before they start to experience problems. It is recommended to replace them if they are older than 15 years, as this will help you avoid drafts or congested areas and ensure that all parts of your home are comfortable. Central air units typically last between 12 and 17 years with average use and proper maintenance. The size of the unit does not affect its lifespan, unless it is not the right size for your home.
On average, an air conditioning system can last anywhere from 10 to 25 years, depending on several factors. If you keep up with suggested maintenance, the average life expectancy of commercial HVAC systems is 15 to 20 years. However, just like your body won't work as efficiently if you don't take care of it, your commercial air conditioning system will wear out more quickly if you don't keep up with services and repairs.
