10 Best Mini Splits 2025 in the United States

The MRCOOL DIY 9,000 BTU Ductless Mini Split is a solid choice for a compact heating and cooling solution suited for spaces around 350 square feet, such as a small room or office. Its 9,000 BTU capacity supports a single zone, making it simple and efficient for spot climate control. With a high SEER rating of 23.6, it offers good energy efficiency, helping to reduce power bills compared to older units. The noise level at 45 dB is fairly quiet, so it won’t be disruptive in quiet environments.

One of the standout features is its easy DIY installation with pre-charged line sets, allowing setup without special tools or professional help—ideal for avoiding installation costs. The unit also supports smart controls compatible with Google Assistant and Amazon Alexa, enabling convenient adjustments via phone or voice commands. The included remote control and additional features like sleep mode and a dehumidifier enhance user comfort.

This model supports only a single zone, so it’s not suitable for cooling or heating multiple rooms independently. It runs on 115V power, which limits its size and power compared to higher voltage systems designed for larger spaces. Some users might also find the 45 dB noise level noticeable in very quiet rooms. This MRCOOL mini-split is well-suited for those seeking a quiet, energy-efficient, and easy-to-install heating and cooling system for a small space, with smart features and a DIY setup making it especially appealing for homeowners or renters who prefer managing their own installation and want modern conveniences without complexity.

The MRCOOL 18,000 BTU Easy Pro Series mini-split is designed for heating and cooling spaces up to about 800 square feet, making it suitable for medium-sized rooms or small open-plan areas. It covers both heating and cooling needs, which is great for year-round comfort. Installation is simplified compared to traditional systems, allowing for a DIY approach that can save on professional installation costs. The unit operates quietly at 43 dB, so it won't be disruptive in a home or office setting.

It includes smart WiFi connectivity compatible with Google Assistant and Amazon Alexa, giving you remote control via phone or voice commands for added convenience. The system supports only a single zone, meaning it’s best for one main living or working area rather than multiple rooms. The unit has a modest 2-star energy rating, offering reasonable energy efficiency.

This mini-split is well suited for buyers looking for a straightforward, easy-to-install system with smart features and reliable all-season comfort without needing complex multi-zone setups.

The MRCOOL 18000 BTU 5th Gen DIY Mini Split is a solid choice for cooling and heating spaces up to about 800 square feet, making it suitable for a single room or small office. It offers a strong BTU rating of 18,000 along with heating capability, so it works well year-round. The SEER rating of 22.5 means it is quite energy efficient compared to many other models, which can help save on electricity bills. Noise level is reasonably low at 46 dB, so it won’t be too disruptive indoors.

One standout feature is the DIY installation: it comes with pre-charged line sets and requires no special tools or professional training, which many users will find convenient and cost-saving. The unit is also smart home compatible with Google Assistant and Alexa, allowing for easy temperature control from your phone or voice commands.

It is important to note that this model only supports a single zone, so it's not ideal if you want to condition multiple rooms independently. Also, the BEE Star Rating is just 1 star, which suggests it might not meet higher energy efficiency standards in some regions. Additionally, it operates on a 230V power supply, so you’ll want to ensure your home’s electrical setup matches. If you need an efficient, quiet, and easy-to-install mini split for one area and appreciate smart features, this MRCOOL unit is worth considering.