The answer to 'how long does ductless system last' is that a ductless mini-split HVAC system can typically last 15-20 years with proper maintenance. Ductless systems are known for their long lifespan, as they have fewer moving parts compared to traditional ducted systems. With regular professional servicing and cleaning, the indoor and outdoor units can continue operating efficiently for many years.
The longevity of a ductless system depends on factors like the quality of the installation, frequency of use, and environmental conditions. Homeowners who live in milder climates and use their ductless system moderately may see the upper end of that 15-20 year lifespan. Regular filter changes, coil cleanings, and addressing any issues promptly can help maximize the system's useful life.