10 Best Ductless Split System 2025 in the United States

The Senville LETO Series Mini Split Air Conditioner Heat Pump is a versatile and stylish option for both home and business use. With a BTU capacity of 9000, it can efficiently cool and heat areas up to 400 square feet. The unit has an impressive SEER rating of 21.5, indicating high energy efficiency, although it is not Energy Star compliant. This might be a minor drawback for some users who prioritize Energy Star certification. The noise level is quite low at 25 dB, making it suitable for quiet environments like bedrooms and living areas.

The unit is Alexa-enabled, allowing for convenient voice control and app integration, which adds to its user-friendly nature. It offers a 4-in-1 function, including air conditioning, heating, dehumidifying, and a fan, along with a turbo function for quick temperature changes. However, it requires professional installation, which is not ideal for those looking for a DIY solution. The included installation package and pre-loaded refrigerant make the process somewhat easier, but it's still necessary to hire a professional, which can add to the cost.

The Senville LETO Series comes with a solid warranty—5 years on parts and the compressor, though labor is not included. This warranty, along with free technical support, offers peace of mind to users. It’s a suitable choice for those looking for a reliable, efficient, and aesthetically pleasing mini split system.

The DELLA Versa Series 12000 BTU Mini Split Air Conditioner is a high-performing ductless system that offers a variety of features to enhance comfort and energy efficiency. With a BTU capacity of 12000, it's suitable for cooling spaces up to 550 sq. ft. The unit has an impressive SEER2 rating of 19, reflecting its high energy efficiency, and it operates quietly at just 42 dB, making it a great option for bedrooms or living rooms where noise can be a concern.

Additionally, it includes a heat pump capable of functioning in temperatures as low as -4°F, which adds versatility for year-round use. Smart functions, like Alexa compatibility, remote control, and multiple operating modes (cooling, heating, dehumidifying), offer convenience and customization. The air conditioner also features advanced technology like DC Inverter, which helps achieve up to 30% power savings.

However, installation is not DIY-friendly and requires professional assistance, as the system needs line-set vacuuming and potential freon adjustments if the line-set length is altered. The unit comes pre-charged and includes a 16.4ft installation kit, but the need for professional installation may add to the initial cost. This product is well-suited for those looking for an energy-efficient, quiet, and versatile air conditioning solution for medium-sized spaces.