10 Best Mini Split Air Conditioners 2025 in the United States

The TOSOT TST-MZ-M36-D1818 is a dual-zone mini-split air conditioner and heat pump designed to cool and heat up to about 2,400 square feet efficiently. Its combined 36,000 BTU capacity, split into two 18,000 BTU indoor units, allows you to control temperatures separately in two rooms, which is great if you want personalized comfort. With a high SEER2 rating of 21, this unit is very energy-efficient, helping you save on electricity bills compared to standard models. It's also Energy Star certified and qualifies for federal tax rebates, which adds to its cost benefits. The system operates quietly at 63 decibels, though this noise level is moderate and might be noticeable in very quiet spaces.

Installation is more straightforward than traditional central AC as it requires no ductwork, and it comes with a 16.4-foot copper line set, although you’ll need to get the power cord separately. Maintenance is relatively simple since each indoor unit can be serviced individually. The unit handles extreme weather well, operating efficiently even in very cold or hot climates, which is useful if you live in areas with harsh seasons. You can control the system remotely via WiFi through an app, including voice commands with Google Assistant, adding convenience.

The size and weight (over 300 pounds) might require professional help during installation. Also, the product is shipped in multiple packages, so make sure you have all parts before arranging installation. With a five-year warranty, this system offers solid reliability and smart home compatibility, making it a strong choice if you need flexible cooling and heating for two rooms with good energy savings.

The Senville LETO Series Mini Split Air Conditioner Heat Pump is a versatile, all-season solution with a 9000 BTU capacity. Its high SEER rating of 21.5 makes it energy-efficient, though not Energy Star compliant. This unit works well for spaces up to 400 square feet and operates quietly at 25 dB, making it suitable for bedrooms and living areas.

It also includes features like voice control via Alexa, a dehumidifier, and a turbo function, enhancing its usability. The system is designed for professional installation, which could be a drawback for DIY enthusiasts. Additionally, it comes with a comprehensive installation kit and a 5-year warranty on parts and the compressor, providing peace of mind.

However, labor costs are not covered, which is something to consider. This mini split is ideal for both home and commercial spaces like stores and eateries, thanks to its stylish design and reliable performance.

The MRCOOL 12000 BTU Ductless Inverter Mini Split is a solid choice if you need both cooling and heating in a single unit, covering spaces up to around 550 square feet. With 12,000 BTUs, it’s suitable for small to medium rooms like bedrooms, small offices, or compact commercial areas. It operates quietly at about 43 decibels, which is comparable to a quiet conversation, making it unobtrusive during use. The 2-star energy rating suggests it’s moderately efficient, so it won’t be the lowest on energy bills but still reasonable for the price.

One of its strong points is the DIY-friendly design, making installation easier for those comfortable with some basic setup, and it includes helpful maintenance features like easy-to-clean filters and refrigerant leak detection to keep it running smoothly. Extra perks like timer mode and Active Clean Technology help maintain good air quality and convenience. However, if you expect ultra-low noise or top-tier energy efficiency, there might be better options, and it only supports a single zone, so it’s not ideal if you want to cool or heat multiple rooms independently.

This model is well-suited for users seeking a straightforward, year-round HVAC solution without complex installation or multi-zone needs.