The answer to 'how long will HVAC system last' is that a well-maintained HVAC system can typically last 15-20 years. The lifespan of an HVAC system depends on several factors, including the quality of the equipment, the frequency of maintenance, and the climate in which it operates. Proper maintenance, such as regular tune-ups, filter changes, and cleaning, can help extend the system's lifespan and keep it running efficiently.
It's important to note that the age of an HVAC system is not the only factor to consider when determining if it needs to be replaced. Other signs that it may be time to replace your HVAC system include increased energy bills, frequent breakdowns, and decreased heating and cooling performance.