10 Best Mini Split Seer Rating 2026 in the United States

The Senville LETO Series Mini Split Air Conditioner offers a solid SEER rating of 19, meaning it’s quite energy efficient compared to many models on the market. This efficiency helps lower electricity bills while providing reliable cooling and heating, making it a smart choice for year-round comfort. With 30,000 BTU power and a 2.5-ton capacity, it can effectively cool or heat spaces up to around 1,400 square feet, suitable for larger rooms or small commercial areas. The inverter technology adjusts power use to save energy and maintain steady temperatures.

A standout feature is its Alexa compatibility, allowing you to control the unit with voice commands or an app, which adds convenience, especially for those who like smart home devices. It also functions as a dehumidifier and fan, adding versatility beyond just cooling and heating. On the downside, this mini split requires professional installation, which can add to upfront costs and effort. The included installation kit is handy, but you’ll likely need a technician to handle setup properly. The warranty covers parts for 5 years and the compressor for 5 years, which is reassuring, although labor costs for repairs aren’t included. Noise levels are low at 34 dB, so it won’t disturb quiet environments.

If you want an energy-efficient, smart-controlled mini split with decent cooling power and don’t mind arranging professional installation, this model from Senville is a capable option for homes or small businesses.

The TOSOT 24,000 BTU mini-split air conditioner stands out with its excellent 24 SEER2 rating, meaning it uses significantly less energy than many standard units, potentially saving you up to a third on cooling and heating costs compared to older systems. This high efficiency is backed by Energy Star and other certifications, which also may qualify you for tax credits. It’s designed to work well in extreme temperatures, from very cold winters (as low as -22°F) to hot summers, making it a reliable choice for various climates. The unit’s heating feature includes a dual electric heating belt to keep you warm even in harsh cold, and it can cool spaces up to about 1,500 square feet.

One unique feature is its compatibility with an energy recovery ventilator (ERV) system, which helps bring fresh air indoors while saving energy and keeping humidity balanced—though installing this requires extra work and professional help. The TOSOT mini-split is also very quiet, producing just 30 decibels inside, so it won’t disturb your sleep or work. It comes WiFi-enabled for convenient control via your phone.

Installation of this unit is more complex than window units, requiring professional setup, and the ERV option adds to the cost and installation effort. For those seeking an energy-efficient, quiet mini-split capable of handling tough climate conditions and appreciating smart features, this unit presents a solid choice.

The MRCOOL 12000 BTU Easy Pro Series mini-split system is a ductless air conditioner and heat pump designed for spaces up to about 550 square feet. It offers both heating and cooling, making it useful year-round whether you need to warm or cool your home or office. The unit uses modern refrigerant (R-454B) and has a 2-star BEE energy rating, indicating reasonable energy efficiency though not the highest level available.

This system is notably quiet at 43 decibels, which is great if you want minimal noise. It also includes handy features like a timer, refrigerant leak detection, and easy-to-clean filters that help maintain good air quality. The DIY installation aspect can be a plus for those comfortable with setup, potentially saving on installation costs.

With its size and 1-ton capacity, it suits small to mid-sized rooms well. The 2-star energy rating suggests electricity bills might be a bit higher compared to more energy-efficient models. This MRCOOL mini-split is a solid choice for those needing reliable heating and cooling in smaller spaces with decent energy performance and features that enhance comfort and maintenance.