The answer to 'how long will ductless system last' is that a well-maintained ductless HVAC system can typically last 15-20 years. Ductless systems, also known as mini-split systems, are known for their durability and long lifespan when properly cared for. Unlike traditional ducted systems, ductless units have fewer moving parts and are less prone to wear and tear over time.
With regular maintenance, such as cleaning the air filters and outdoor condenser unit, a ductless system can continue operating efficiently for 15-20 years or more. However, factors like the climate, usage patterns, and the quality of the initial installation can impact the system's longevity. It's important to have your ductless system serviced by a professional HVAC technician annually to ensure optimal performance and extend its lifespan.