10 Best Mini Split Cooling Systems 2025 in the United States

The DELLA Vario Series 36,000 BTU mini split AC is well suited for cooling and heating medium to large rooms, covering up to about 2500 square feet. Its 3-ton capacity allows it to handle bigger spaces where powerful cooling or heating is necessary. The system features a high energy efficiency rating of 19 SEER2, which helps reduce electricity bills compared to less efficient models. It also includes inverter technology and a heat pump capable of heating even in very cold weather (down to -4°F), making it useful year-round.

The unit operates quietly at 36 dB, so it won’t be disruptive in bedrooms or living areas. It offers smart features such as 4D airflow for even air distribution, multiple modes including dehumidification, and compatibility with Alexa for convenient remote control. The system senses temperature via the remote control to enhance comfort and energy savings. This model supports only a single zone, making it ideal for one main area rather than multiple rooms.

Professional installation is required, as it is not a simple DIY project. Refrigerant adjustments may be necessary for longer line sets. The included installation kit covers standard pipe lengths but additional parts may be needed for more complex setups. If you prioritize energy efficiency, quiet operation, and advanced controls in a single-zone mini-split system for a large room, this DELLA model represents a strong choice.

The DELLA 24000 BTU Mini Split AC is a robust option for those seeking efficient cooling and heating for spaces up to 1500 sq.ft. With a high cooling capacity of 24000 BTU, it can adequately manage large rooms, making it suitable for residential or small commercial applications. The system boasts an impressive SEER rating of 19, indicating strong energy efficiency that can lead to substantial power savings over time. This is particularly beneficial for those looking to reduce energy bills without sacrificing comfort.

One of its standout features is the ductless inverter technology, which contributes to quieter operation—at 51 dB—and flexible installation options. The unit is equipped with smart functions such as Alexa compatibility, multiple fan speeds, and modes like sleep, turbo, and eco energy saving. This makes it versatile and user-friendly. However, installation requires professional handling due to the complexity involved, including line-set vacuuming and freon adjustments, which may add to initial setup costs.

The ability to adjust the temperature based on the remote's location rather than the indoor unit is a thoughtful design for personalized comfort. The noise level is impressively low for a unit of this size, ensuring minimal disruption. Additional features like WiFi connectivity and a dehumidifier enhance its appeal. Potential buyers should be aware that it is not ideal for DIY installation, and while it offers ample coverage, it is best suited for environments where temperatures do not drop too far below freezing. The DELLA Mini Split AC is a feature-rich choice for those seeking a reliable, energy-efficient solution with smart technology integrations.

The DELLA Motto Series 18000 BTU mini-split cooling system is designed to cool and heat spaces up to 1000 sq. ft. It offers a high energy efficiency with a 19 SEER2 rating and incorporates advanced DC Inverter technology, which can save up to 30% on power usage. This model operates quietly at 47 dBa, making it suitable for bedrooms and living rooms where noise can be a concern. Additionally, it features Wi-Fi connectivity and works with Alexa, allowing for convenient voice control and remote operation.

The unit includes smart functions like 4D airflow, multiple fan speeds, and various modes (eco, turbo, sleep), enhancing user comfort and flexibility. It uses R32 refrigerant, which is more environmentally friendly compared to older refrigerants. A professional installation is required, as the system is not DIY-friendly and needs line-set vacuuming and potentially adjusting freon levels.

One potential drawback is its relatively high upfront cost and the need for professional installation, which could add to the expense. However, its energy efficiency and advanced features could result in long-term savings. The system is ideal for those looking to efficiently heat and cool larger rooms or small apartments while enjoying modern smart features and a quiet operation.