10 Best Ductless Mini Split Systems 2025 in the United States

The DELLA Vario 24000 BTU Mini Split is a solid choice for cooling or heating a medium to large space—up to about 1500 square feet. Its 24000 BTU capacity and 19 SEER2 rating make it quite energy efficient, helping save on electricity bills compared to less efficient units. It also includes a 2-ton heat pump that operates well even in cold temperatures down to -4°F, making it versatile for year-round use. Noise is kept low at roughly 35 dB, so it runs quietly without disturbing your daily activities.

One standout feature is the smart sensor in the remote control that adjusts airflow and temperature based on room conditions, adding to comfort and efficiency. It also supports Alexa and WiFi control, which is convenient if you like smart home integration. However, this system covers only a single zone, so if you want to cool or heat multiple rooms independently, you might need to look for multi-zone models.

Installation isn’t DIY-friendly—it requires a professional to vacuum the line-set and handle refrigerant adjustments, so be prepared for extra installation costs. Maintenance is typical for ductless systems and should be performed regularly to keep it running smoothly. This unit is well-suited for homeowners looking for an energy-efficient, quiet, and smart-controlled mini split for a single zone with solid heating and cooling capabilities.

The Senville 36000 BTU Tri Zone Mini Split is a solid choice for anyone needing to cool or heat multiple rooms individually, thanks to its three separate air handlers managed by one outdoor unit. With a strong 36,000 BTU capacity and a 3-ton rating, it’s powerful enough for medium to larger homes or small commercial spaces. Its high SEER rating of 22.5 means it is energy-efficient, helping you save on electricity bills compared to less efficient models. The unit's Arctic Heat Pump is designed to perform well in very cold temperatures, down to -22°F, which is great if you live in a chilly climate.

One of the standout features is compatibility with Alexa, allowing voice control and remote management, which can also contribute to energy savings when you’re away. The system comes with a comprehensive installation kit, but professional installation is required—not a DIY job—which might add to upfront costs but ensures proper setup and warranty coverage. A 5-year parts and 10-year compressor warranty offers reasonable peace of mind.

This mini split is ideal for users who want a reliable, energy-efficient, multi-zone system with smart controls, provided they are comfortable with professional installation and can confirm noise expectations.

The Senville 36000 BTU Quad Zone Mini Split is a solid choice if you need to cool or heat multiple rooms independently, thanks to its four indoor units each providing 9000 BTUs, totaling 3 tons of capacity. This makes it well-suited for larger homes or small commercial spaces covering about 1800 square feet. With a high SEER rating of 22.5, it offers strong energy efficiency, which can help lower electricity bills over time. The system is also AHRI certified and includes a heat pump that works efficiently in very cold weather, down to -22°F, so it’s a versatile option for both heating and cooling across seasons.

One standout feature is Alexa compatibility, allowing for convenient voice control and remote temperature adjustments, along with energy-saving routines that could cut costs by up to 40%. Noise-wise, the indoor units operate quietly at 23.5 dB, which is barely noticeable in daily use. This system requires professional installation and isn’t a DIY setup, and with a weight of 225 pounds plus the need for a 220V power supply, setup can be more involved compared to simpler units. If you want a reliable, efficient multi-zone mini split with smart features and don’t mind professional installation, this Senville system is worth considering.