10 Best Mini Split Seer Rating 2025 in the United States

The Senville LETO Series Mini Split Air Conditioner is a well-rounded choice for those seeking an efficient and versatile cooling and heating solution. With a SEER2 rating of 18, it offers good energy efficiency for its size, making it suitable for larger areas up to 1250 square feet. This mini-split system combines several functions, including air conditioning, heating, dehumidifying, and fan, which means it can adapt to different seasonal needs with ease. The inclusion of an inverter compressor ensures quieter operation, rated at just 34 dB, allowing you to enjoy a comfortable environment without disturbing background noise.

One of the standout features is its compatibility with Alexa, which provides convenience through voice control or mobile app access. This makes adjusting your home's climate as simple as speaking a command or tapping a button on your phone. The sleek design of the unit also adds a modern touch to any room, making it suitable for both residential and commercial settings.

There are a few drawbacks to consider. While the mini-split system is designed for professional installation, this can add to the overall cost and complexity of setting it up. Additionally, it is not Energy Star compliant, which may be a concern for users focused on maximizing energy savings. The warranty coverage is decent, with 5 years on parts and the compressor, but labor costs for installation and repairs are not included.

The MRCOOL DIY 24K BTU 4th Gen mini-split stands out with a high SEER rating of 20.5, which means it's very energy efficient compared to many other units in its class. The Energy Star certification confirms it meets strict energy-saving standards, helping reduce electricity bills while maintaining strong cooling performance for spaces up to around 1000 square feet. Its noise level is quite low at 33 dB, making it a quiet choice for bedrooms or living areas. One of the biggest advantages of this model is its DIY-friendly installation, thanks to pre-charged line sets that don't require professional tools or skills. This feature can save on installation costs and is ideal for handy homeowners. It also includes smart controls that let you adjust settings remotely via an app on your phone, adding convenience. The unit has helpful safety features like coolant leakage detection, which protects the compressor and prolongs the system’s life. Additionally, it supports cooling even in low temperatures down to 5°F, which is not common in all mini-splits.

The unit is quite large and heavy (224 pounds), so it might require assistance to install and might not fit all spaces easily. Also, while it's designed for easy installation, some users may still find the setup challenging if they are not comfortable with basic home projects. This mini-split offers an efficient, quiet, and smart-controlled cooling system that balances performance with user-friendly installation.

The MrCool Easy Pro 24k BTU 18 SEER Ductless Heat Pump Split System offers a good balance of energy efficiency and user-friendly features, making it a solid choice for those looking to cool or heat spaces up to 1000 square feet. An 18 SEER rating indicates it’s relatively efficient in terms of energy use, which can help reduce utility bills over time. The system includes a 16-foot pre-charged line set, which simplifies the installation process, especially for those inclined to do it themselves, though it might still be a bit challenging for complete novices.

The included features like the Follow Me function and Sleep mode add convenience, as they help maintain comfortable temperatures and reduce energy consumption when not needed. Washable filters are a practical addition, making maintenance more straightforward and affordable without needing frequent replacements. However, the noise level of 60 dB may be a bit loud for some users, especially if the unit is placed in a bedroom or a quiet area.

The warranty terms are decent, with a 1-year warranty for the compressor and 2 years for parts, though some might prefer longer coverage. In summary, this mini-split system stands out for its DIY-friendly installation and energy efficiency, though users should consider the noise level depending on their sensitivity to sound.