The answer to 'how long will mini split last' is that a properly installed and well-maintained mini split air conditioner or heat pump system can last 15-20 years on average. These ductless systems are designed for long-term use, but their lifespan depends on factors like the quality of the equipment, frequency of maintenance, and environmental conditions.
Mini splits are generally more durable than traditional central HVAC systems because they have fewer components and don't require extensive ductwork. The outdoor compressor unit and indoor air handling units are built to withstand the elements and operate efficiently for many years. With regular professional tune-ups and filter changes, homeowners can extend the life of their mini split system.