10 Best Mini Split Ac For Garage 2025 in the United States

The MRCOOL Easy Pro 12K BTU mini split is a solid choice for cooling or heating a garage or small space up to about 550 square feet. It offers 12,000 BTUs, providing adequate power for typical garage sizes. With a SEER rating of 19.5, it delivers notable energy efficiency, helping reduce electricity costs while maintaining a comfortable environment.

Installation is designed to be DIY-friendly and includes a 16-foot lineset, which can reduce the need for professional installation if basic setup tasks are manageable. The unit operates at a reasonably low noise level of 43 decibels, ensuring it won't be overly loud or distracting during use. Its heating and cooling functions make it suitable for year-round use.

Additional features include a timer mode, refrigerant leak detection, and Active Clean Technology that helps maintain air quality and simplifies filter cleaning. It carries a 2-star BEE energy rating, which is moderate compared to higher-rated models. This mini split is well-suited for garage owners seeking a reliable, energy-efficient unit with heating capability, smart features, and quiet operation, especially those comfortable with handling installation.

The MrCool DIY 36k BTU 18 SEER2 Mini Split AC & Heat Pump is a powerful option for cooling and heating spaces like garages, with a strong 36,000 BTU capacity suitable for larger rooms up to around 1,500 square feet. Its high SEER rating of 23.6 means it runs efficiently, helping to save on electricity bills compared to less efficient models. The unit is designed for wall-mount installation and comes with a full DIY kit, which includes indoor and outdoor units and installation parts, making it a good choice for those comfortable with basic home installation tasks.

Noise level is moderate at 43 dB, roughly equivalent to a quiet conversation, so it won’t be overly disruptive in a garage or workshop setting. The heat pump feature ensures the unit can provide warmth during colder months, adding year-round comfort. The one-year labor warranty offers some peace of mind but is relatively short compared to other brands.

This unit balances strong cooling and heating power with energy efficiency, making it a solid fit for garage environments where a reliable, moderately quiet climate control solution is needed, especially if you prefer a DIY installation approach.

The Senville SENA-30HF/T is a powerful mini-split system with a 28,000 BTU (2.3 tons) capacity, making it well-suited for larger garage spaces up to around 1500 square feet. Its high SEER rating of 23 means it operates efficiently, helping keep energy bills lower while providing strong cooling and heating all year round. Since it’s a split system, professional installation is required, which is common for units of this type but adds to the initial setup effort and cost.

One notable feature is the very quiet operation at just 25 decibels, so it won’t be disruptive while you’re working in the garage. The heating function makes it versatile for colder months, extending use beyond just summer cooling. Smart features like Alexa compatibility allow for easy temperature control via voice or app, adding convenience especially if you want to adjust settings remotely. It also supports multiple indoor units for separate rooms, although for garage use, generally only one unit would be needed.

The unit carries a strong warranty—10 years on the compressor and 5 years on parts—providing peace of mind regarding reliability. Some users might find professional installation a hurdle, and since it’s designed to serve multiple rooms, it could be more than what a simple single-zone garage setup requires. If you want an energy-efficient, quiet, and smart system that handles both heating and cooling well, this Senville mini-split is a solid choice.