10 Best Mini Split For Garage 2025 in the United States

The MRCOOL DIY-24-HP-WM-230D25O is a 24,000 BTU mini-split designed for spaces around 800 to 1050 square feet, making it a good fit for most garages. Its high SEER rating of 22.7 means it runs efficiently, helping save on electricity. The heating aspect is also solid, with a 9.5 HSPF rating that ensures it can keep your garage warm during colder months. Noise level at 46 decibels is fairly quiet—comparable to a normal conversation—so it won’t be too distracting. One of its biggest strengths is the easy DIY installation: the pre-charged refrigerant lines and simple connections mean you don’t need special tools or professional help, which can save money and hassle. Plus, the unit supports smart controls via WiFi and voice assistants like Alexa and Google, adding convenience for monitoring and adjusting settings remotely. It also includes useful features like dehumidifying, sleep mode, and a remote control.

On the downside, the unit is on the heavier side at 180 pounds and requires a 230V power supply, so installation location and electrical setup need to accommodate this. Also, while it’s Energy Star certified, its BEE Star rating is just 1 star, which might be less relevant depending on your region but worth noting. This model provides a good balance of power, efficiency, and user-friendly installation, making it especially suitable for garage owners who want an effective heating and cooling solution without professional installation costs.

The Senville LETO Series Mini Split is a solid choice for heating and cooling a garage, thanks to its 12,000 BTU (1 ton) capacity, which suits small to medium spaces well. With a high SEER rating of 20.8, it’s energy efficient, helping keep electricity costs lower when running. It also doubles as a heat pump capable of warming your space down to about 5°F (-15°C), which is helpful in colder climates. The unit includes a versatile 4-in-1 function—cooling, heating, dehumidifying, and fan modes—giving you year-round comfort.

A standout feature is its Alexa compatibility, allowing you to control the system by voice or app, adding convenience. Installation comes with everything needed, but it requires professional setup, and the included line set supports up to 25 feet, so consider the distance from your outdoor condenser to the indoor unit. Mini splits generally run quietly, making it unlikely to disturb your garage workspace. The 5-year warranty on parts and compressor shows confidence in durability, though labor costs for installation aren’t covered.

One downside is that it’s not Energy Star certified, which might concern those seeking the strictest energy efficiency standards. This model balances strong performance and smart features, making it a practical option for someone looking to keep their garage comfortable year-round without breaking the bank.

The MRCOOL 12000 BTU ductless mini split is a solid choice if you need an all-in-one heating and cooling solution for a garage or similarly sized space up to about 550 square feet. Its 12,000 BTU capacity is appropriate for moderate-sized areas, and the unit offers year-round comfort with both cooling and heating capabilities. The heating performance is decent for mild winters, but keep in mind it may not be enough for very cold climates. The system runs quietly at around 43 dB, so it won’t be a distraction while you work or relax in your garage.

Energy efficiency is moderate with a 2-star rating, which is common in this price and power range, though more efficient models exist if you want to save more on electricity bills. One of the biggest advantages is the DIY-friendly design, making installation easier for those who want to avoid hiring a professional. It includes helpful features like timer mode and refrigerant leak detection, plus an air cleaning technology that keeps filters easy to maintain and helps with indoor air quality.

On the downside, the 115V voltage limits it to smaller setups and might not suit larger garages or workshops needing more power. Also, the unit’s size means you’ll need some wall space for mounting. If you want a straightforward, reasonably priced mini split system for a garage or small commercial spot, this MRCOOL unit balances performance, convenience, and comfort effectively.