10 Best Mini Split Air Conditioners 2025 in the United States

The COSTWAY 23000 BTU Mini Split Air Conditioner is a solid choice if you need to cool or heat a large space up to about 1500 square feet. Its powerful 23000 BTU capacity and 17 SEER rating mean it delivers efficient performance, which helps keep energy bills reasonable while still providing strong cooling and heating, even in extreme temperatures (up to 122℉ for cooling and as low as 5℉ for heating). It uses R32 refrigerant, which is better for the environment compared to older types. You get one zone for a focused climate control area, which works well in a single large room or open-plan living space. The noise level is relatively low at 37 decibels, so it won't disturb your daily activities or sleep, especially with its quiet sleep mode.

Installation requires a licensed HVAC professional, which adds to the upfront cost and complexity—something to consider if you want a simpler setup. A standout feature is the Wi-Fi connectivity, letting you control your AC remotely via smartphone or voice commands with Alexa or Google Assistant, adding convenience. The unit also offers multiple modes and fan speeds, plus features like auto swing and self-cleaning filters that help with maintenance and air quality.

The unit is fairly heavy at over 100 pounds, and while installation parts are included, professional help is necessary. This model is ideal for homeowners who want reliable, smart-controlled climate comfort for a large space and are comfortable with professional installation and maintenance.

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.

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.