10 Best Inverter Split System Air Conditioner 2025 in the United States

The Senville LETO Series Mini Split is a solid choice for those looking to cool and heat spaces up to around 1,000 square feet comfortably. With an 18,000 BTU cooling capacity and 1.5-ton size, it offers strong performance for medium-sized rooms. Its SEER rating of 19 indicates good energy efficiency, helping reduce electricity bills compared to less efficient models, although it does not have an Energy Star certification. Noise levels are quite low at 30 dB, making it a quiet option suitable for bedrooms or living areas. This mini split stands out with smart features, including Alexa compatibility, allowing you to control the system with your voice or smartphone, which adds convenience for everyday use.

It also functions year-round with air conditioning, heating down to -15°C (5°F), a dehumidifier, fan, and a turbo mode for quick temperature adjustments. The package comes with everything needed for installation, such as the indoor unit, outdoor condenser, remote control, and tubing, but professional installation is required, which adds to upfront costs. The design is simple and white, blending easily into most home or business environments without drawing attention. Warranty coverage is strong, offering 5 years on the compressor and parts, which provides peace of mind for durability and support.

On the downside, it lacks Energy Star certification, so it may not be the best pick if you prioritize maximum energy savings or eco-friendliness. Also, while it supports smart home integration, it might require a stable Wi-Fi connection, which could be a limitation in some settings. This model delivers a good balance of quiet, efficient cooling and heating with helpful smart features, making it particularly suitable for homeowners or small business owners who want comfort combined with modern controls.

The DELLA Versa Series 12000 BTU Mini Split Air Conditioner is a solid choice for anyone looking to cool and heat a medium-sized space up to 550 square feet. With a cooling capacity of 12000 BTU, it's efficient for most residential spaces. Its energy efficiency is impressive, boasting a 19 SEER2 rating, which means lower energy bills and better performance. It also includes dehumidification, enhancing comfort in humid conditions.

The noise level is quite low, ranging from 30 to 41 dBa, making it unobtrusive in a home environment. The smart features, including compatibility with Alexa, multiple fan speeds, and various modes like sleep and eco energy-saving mode, provide ease of use and customization for different needs. The smart sensor that adjusts airflow and temperature based on the remote control’s location is particularly useful for personal comfort.

However, installation and maintenance could be a challenge as it requires professional installation and line-set vacuuming, making it less suitable for DIY enthusiasts. The product comes with a comprehensive installation kit, but adjusting freon levels if the line-set length is altered might add complexity. Additionally, while the air conditioner offers ample coverage and can operate in very low temperatures, the need for professional setup could be a drawback for some users. It is an excellent unit for those who prioritize energy efficiency, quiet operation, and smart features in their air conditioning system, provided they are comfortable with the professional installation requirement.