The answer to 'how long does system upgrade last' is that the lifespan of an HVAC system upgrade can vary, but most upgrades will last 10-15 years with proper maintenance. HVAC systems are a major investment for homeowners, so it's important to understand the expected lifespan of any upgrades or replacements. Factors like the quality of the equipment, how well it's installed, and how well it's maintained can all impact the longevity of an HVAC system upgrade.
In general, you can expect a well-maintained HVAC system upgrade to last around 10-15 years before needing to be replaced. However, some high-efficiency systems may last up to 20 years with proper care. It's a good idea to have your HVAC system serviced annually by a professional to ensure it's running at peak efficiency and to catch any potential issues early.