The answer to 'how long does central air last' is that a well-maintained central air conditioning system typically lasts 15-20 years. The lifespan of a central air unit can vary depending on factors like the quality of the equipment, how often it's used, and how well it's maintained through regular professional servicing.
Central air conditioners are major home investments, so it's important to keep up with maintenance like changing air filters, cleaning the condenser coils, and scheduling annual tune-ups. Proper maintenance can help extend the system's lifespan and ensure it runs efficiently. When a central AC unit reaches the end of its useful life, it's usually time to consider replacing the entire system rather than just repairing individual components.