At SS&B Heating & Cooling, we believe ductless mini split systems are a fantastic way to heat and cool your room addition, converted basement, or even your entire home. Compared to central AC or heating, they offer several benefits, including easy installation, high energy efficiency, and quiet operation. One of the most impressive features of mini split systems is their long life expectancy. So, how long do mini splits last? While there’s no one-size-fits-all answer, there are several ways to extend the lifespan of your mini split heat pump and AC units. While some DIY solutions can help, we highly recommend letting our team of Trane professionals at SS&B Heating & Cooling handle the more extensive maintenance or service.

Mini Split AC Lifespan

When you purchase a quality system from a reputable manufacturer like Trane, you can expect 10 – 15 years of efficient, reliable use. In some cases, 20 years or longer is also realistic and not entirely unheard of, especially when you follow our tips for efficient usage, regular filter cleaning, and annual service by your local Trane experts at SS&B Heating & Cooling.

Similar to forced air heat pumps and air conditioning systems, three main factors can determine the mini split AC lifespan: choosing high-quality equipment, keeping it properly maintained, and using it efficiently. Follow these simple rules, and the answer to how long ductless air conditioners last might be longer than you expect.

Choose A High-Quality System

The first step is to choose a high-quality system from a reputable manufacturer like Trane. Trane products are backed by a company known for inventing modern air conditioners and continuously developing leading indoor comfort technology.

Trane ductless mini split systems provide long-term comfort partly due to inverter-controlled variable-speed operation. This type of system is designed to adjust cooling and heating output to match changing conditions. Variable-speed operation puts less wear and tear on fans, compressors, and other system components.

Don’t Skip Regular Maintenance

Regular maintenance of your mini split ductless system is one of the best things you can do to maximize its performance, efficiency, and longevity. That applies to both the indoor unit and outdoor unit of your mini split system.

For the indoor unit:
- Keep the exterior cabinet clean and dust-free.
- Clean the indoor unit’s air filter monthly and keep the interior of the unit clean and free from dirt and dust.
For the outdoor unit:
- Periodically inspect it to ensure no leaves or other debris are accumulating around the unit.
- Clean the outdoor coil by turning the system off and gently rinsing it with a garden hose – do NOT use a power washer or high-pressure nozzle.

For the best outcome, we recommend mini split maintenance, including an annual tune-up and inspection, by a trusted HVAC contractor like SS&B Heating & Cooling.

Energy-Efficient Use

Outside of maintenance, another way to extend the life of your mini split system is by using it efficiently. By nature, most mini split systems are very energy efficient thanks to their variable-speed operation. You can add life to your unit by:

Turning it off when the room is not occupied or at least setting the temperature for less heating or cooling operation.
Leaving the fan setting on “Auto” and letting the system decide the most efficient speed setting.
Minimizing heat sources during cooling can help – closing blinds or shades to block the sun as an example.

FAQ About Mini Split Life Expectancy

Should I Leave My Mini Split on All the Time? Yes, keeping your mini split running is what they were designed for. Thanks to its inverter technology that automatically adjusts to home conditions for optimal efficiency, you can efficiently run your system all the time. However, if the room sees infrequent use, it may be practical to turn off the system when not needed to conserve energy and enhance efficiency.
Does a Mini Split Turn Off Automatically? Yes, most mini split systems are equipped with automatic shut-off features. These can include occupancy sensors that detect when a room is unoccupied, timer functions for scheduled shut-off, and optional wired controls enabling personalized programming to align with your preferences, enhancing energy efficiency and convenience.
Do Mini Splits Need Maintenance? Yes, mini splits do require regular maintenance to ensure continued efficiency, longevity, and optimal performance. Routine tasks include cleaning the indoor unit, inspecting and cleaning air filters, and periodic checks of the outdoor unit, while a more thorough annual maintenance by a professional HVAC technician is recommended to address potential issues and maximize the system's lifespan.
How Long Does Mini Split Refrigerant Last? The refrigerant in a mini split system should last as long as the system itself under normal conditions. However, if a leak occurs, an HVAC professional may need to add refrigerant after completing the necessary repairs to ensure the system continues to operate efficiently. Regular maintenance checks can help detect and address any potential refrigerant issues early on.
How Often Do You Need To Replace a Mini Split? The frequency of replacing a mini split system depends on various factors, including the quality of the system, usage patterns, and maintenance. Generally, a well-maintained mini split from a reputable manufacturer can last 10-15 years or more. Regular maintenance, such as cleaning filters and inspecting the unit, can help extend its lifespan, while factors like proper installation and efficient usage also contribute to longevity. If you encounter significant issues or a decline in performance, consulting a local Trane expert at SS&B Heating & Cooling is recommended before considering replacement.

Increase Life Expectancy with Our Professional Service

Maximizing the life expectancy of your mini split system requires expert care and maintenance. At SS&B Heating & Cooling, our team of qualified Trane service technicians is dedicated to helping you get the most out of your HVAC system. Here’s how our professional service can benefit you:

Comprehensive System Analysis: Our technicians will conduct a thorough inspection of your mini split system, identifying any potential issues before they become major problems. This proactive approach ensures your system operates smoothly and efficiently.
Regular Maintenance Plans: We offer tailored maintenance plans designed to keep your mini split system in peak condition. Regular maintenance visits include cleaning, filter replacement, and performance checks, all of which contribute to extending the lifespan of your system.
Expert Repairs and Upgrades: Should your system require repairs or component upgrades, our experienced technicians use only high-quality Trane parts to restore your system to optimal performance. This not only fixes immediate issues but also helps prevent future breakdowns.
Energy Efficiency Optimization: Our team can provide guidance on how to use your mini split system more efficiently, including setting the ideal temperatures, optimizing fan settings, and other energy-saving tips. Efficient use of your system reduces wear and tear, prolonging its life expectancy.
Professional Installation: Proper installation is crucial for the longevity of your mini split system. Our experts ensure that your system is installed correctly, adhering to all manufacturer specifications and industry best practices.
Annual Tune-Ups: An annual tune-up by our professionals includes a comprehensive check of both the indoor and outdoor units, refrigerant levels, electrical connections, and overall system operation. This preventive maintenance helps avoid unexpected failures and extends the system’s lifespan.