10 Best Mini Split Units 2025 in the United States

The Senville LETO Series Mini Split offers a solid 18,000 BTU cooling capacity, making it a good fit for medium-sized rooms up to about 1,000 square feet. With a SEER rating of 19, it promises energy-efficient operation, which helps keep electricity bills lower during use. It also works as a heat pump effectively down to 5°F, adding year-round comfort with heating and cooling options. This model supports a single zone, meaning it can control temperature in one room or area at a time. Noise level is very low at about 30 dB, so it won’t disturb your daily activities or sleep.

The unit includes an installation kit and refrigerant for up to 25 feet of line set, but professional installation is recommended for safety and performance reasons. One interesting feature is its Alexa compatibility, allowing smart home integration for easy voice or app control. However, the system is not BEE star rated, which might be a consideration if you prioritize eco-labels. The warranty covers parts for 2 years and the compressor for 5 years, providing decent peace of mind for long-term use.

Though the price and installation requirements may be a bit higher than window units or simpler models, this mini split is a versatile and quiet option that combines modern smart features with reliable cooling and heating in one package.

The MRCOOL 36,000 BTU 5th Gen DIY Mini Split is a strong choice for cooling and heating spaces up to about 1,550 square feet, making it suitable for larger rooms, offices, or small commercial areas. Its 18 SEER rating indicates good energy efficiency, which helps reduce electricity bills during use. The noise level of 46 decibels is fairly quiet, so it won't be disruptive in a home or office environment. This model supports one zone, meaning it controls temperature in a single area rather than multiple separate rooms. A major plus is the easy DIY installation with pre-charged, quick-connect line sets that don’t require professional skills or special tools, saving money on setup. It also comes with smart controls compatible with Alexa and Google Assistant, making temperature adjustments convenient.

The unit combines cooling, heating, and dehumidifying features, so it works year-round and improves indoor comfort. It operates on 230 volts and is fairly heavy at 180 pounds, which might require some help during installation. The product offers a solid warranty (5 years parts, 7 years compressor), adding peace of mind. If you want a user-friendly, energy-smart mini split with strong capacity and easy setup for a single zone, this MRCOOL model fits well. However, if you need multi-zone control, you might want to explore other options.

The MRCOOL 12000 BTU Easy Pro Series mini split is a good option for anyone needing both heating and cooling in spaces up to about 550 square feet, such as a small room, office, or commercial spot. With 12,000 BTUs, it provides solid power for this size range, making it well-suited for year-round use. The unit runs quietly at 43 dB, which means it won't be very disruptive in most environments.

This model uses a modern refrigerant (R-454B) that’s better for the environment compared to older types. The DIY design and features like refrigerant leakage detection and easy-to-clean filters make installation and maintenance simpler for users comfortable with basic home projects. However, the BEE Star Rating of 2 indicates moderate energy efficiency, so it might not be the most cost-effective choice over time if energy savings are a top priority. Also, it supports a single zone, so it’s best for cooling or heating one room or area rather than multiple rooms.

If you want a straightforward, reliable mini split with heating and cooling that’s easy to install yourself, the MRCOOL Easy Pro series fits well. Keep in mind that its energy efficiency is average, and it’s designed for smaller spaces rather than whole-house multi-zone setups.