10 Best Ductless Air Conditioners 2026 in the United States

The Senville LETO Series Mini Split is a 24,000 BTU (2-ton) air conditioner and heat pump designed to cool or heat spaces up to about 1250 square feet. It has a strong SEER rating of 17, meaning it uses energy efficiently, which can help keep electricity bills lower compared to less efficient units. One of its notable strengths is the very quiet operation at just 34 dB, making it suitable for bedrooms or living rooms where low noise is important. This model supports Alexa voice control, allowing you to adjust settings easily from a phone or smart speaker, adding convenience.

It’s a versatile 4-in-1 system offering cooling, heating (effective even in colder weather down to 5°F), dehumidifying, and fan options, making it useful year-round. The product includes everything needed for installation except labor, but professional installation is required, which adds to upfront costs and complexity. The unit comes with a 5-year warranty on parts and compressor, which is reassuring. However, it only supports a single zone, so it’s best for cooling or heating one main area rather than multiple rooms. It is factory charged for refrigerant up to 25 feet of line set, good for typical setups but may require extra refrigerant for longer distances.

The design is sleek and modern, fitting well in homes or small businesses. On the downside, it’s imported from China, and while it’s AHRI certified and ETL listed, it doesn’t have a BEE star rating for energy efficiency compliance in some regions. This model is well suited for those who want a quiet, energy-efficient, versatile mini-split with smart features for a single room or open area, though buyers should be prepared for professional installation costs and limited multi-zone capability.

The Senville LETO Series Mini Split Air Conditioner Heat Pump is a versatile and powerful option for those seeking both cooling and heating solutions. With a cooling capacity of 18,000 BTU, it can efficiently manage temperature control in spaces up to 1,000 square feet, making it suitable for larger rooms or small commercial spaces. The SEER rating of 19 indicates good energy efficiency, although it is not Energy Star compliant, meaning it might not be the most efficient option available.

One of its notable features is the low noise level of 30 dB, which ensures quiet operation, beneficial for environments like bedrooms and offices where minimal noise is crucial. This unit is designed to cover a single zone, which limits its use in multi-room setups but is ideal for concentrated heating or cooling in a specific area. Installation is somewhat straightforward with the included kit, though professional installation is required, which could add to the initial cost.

Maintenance is made easier with pre-loaded refrigerant and a 5-year warranty on parts and the compressor, although labor is not included in the warranty. Additional features such as integration with Alexa for voice control, a dehumidifier, fan, and turbo function add to its versatility, making it a comprehensive all-season appliance. The product is also aesthetically pleasing, suitable for both home and business environments.

The COSTWAY 24000BTU Mini Split Air Conditioner and Heater is a versatile and powerful ductless unit designed for rooms up to 1500 sq. ft. With a high Seasonal Energy Efficiency Ratio (SEER) of 18.5, it promises energy efficiency, which is enhanced by its innovative inverter technology. This technology helps in reducing power consumption by adjusting the power supply frequency without frequently turning the compressor on and off.

The unit operates at a noise level of 50 dB, which is relatively quiet, making it suitable for bedrooms and living areas. The air conditioner offers five modes: auto, cool, dry, heat, and fan, along with four fan speeds, sleep mode, ECO mode, and turbo function, ensuring comfort throughout the year. It also features self-cleaning and auto-defrost functions, which help in maintaining the unit with minimal effort and improving its longevity.

One downside is the requirement for professional installation by a Licensed HVAC Installer, which may add to the initial cost. Additionally, while the product comes with a comprehensive warranty of five years for parts and eight years for the compressor, potential buyers should ensure that R32 refrigerant, which is more eco-friendly, is readily available in their area. This unit is particularly beneficial for those seeking an all-in-one heating and cooling solution with high energy efficiency and multiple operation modes.