10 Best Ductless Air Conditioners 2025 in the United States

The MRCOOL 24000 BTU ductless mini split AC and heat pump is designed to cover spaces up to about 1,050 square feet, making it a solid choice for medium-sized rooms or open-plan areas in homes, offices, or commercial settings. Its dual heating and cooling functionality allows comfortable year-round use, which adds good value for those seeking an all-in-one HVAC solution. With a noise level around 43 dB, it operates quietly enough for most living or working environments without being completely silent.

Installation is designed to be DIY-friendly, especially since it’s part of MRCOOL’s Easy Pro series, potentially saving on professional installation costs. Maintenance is user-friendly too; it features easy-to-clean filters and an Active Clean Technology that helps keep indoor air fresh. Additional perks include a timer mode and refrigerant leakage detection, which are handy for convenience and safety. However, if you need a multi-zone system to cool or heat several rooms independently, this model supports only a single zone, which might limit flexibility.

This unit is a practical option if you want a straightforward, easy-to-install mini split that handles both heating and cooling, but if energy efficiency or multi-zone control is a priority, you may want to look for other models.

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.

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.