The life expectancy of an HVAC system typically ranges between 15 to 25 years. However, this can vary depending on several factors, such as: Maintenance: Regular servicing and cleaning can extend the life of your system. Usage: Systems that are used more frequently or in extreme conditions may wear out sooner. Quality: Higher-end, well-installed systems might last longer than budget models. Environment: Factors like humidity, temperature, and air quality can affect the longevity of the system. If you’ve had your HVAC system for over 15 years, it might be worth looking into upgrading or planning for a replacement soon, especially if you're noticing performance issues or rising energy costs.