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 Senville 36000 BTU Dual Zone Mini Split Air Conditioner Heat Pump is a strong option if you need to cool and heat a large space, like a garage up to around 2000 square feet. With a 3-ton capacity and a high SEER rating of 22, it promises energy-efficient performance that helps keep electricity costs lower. It operates quietly at just 24 decibels, which is great for a garage where noise can be disruptive. This system stands out because it offers dual zone control, meaning you can independently set temperatures in two different areas—ideal if your garage has separate zones or adjoining rooms.

Heating is also included, and it works well even in very cold temperatures down to -22°F, which is useful if you want to use it year-round. The unit is Alexa-compatible, allowing remote temperature control through voice commands or an app, adding convenience and the ability to save energy when you're away. Installation is split-type and professional setup is required, so it’s not a DIY-friendly model. One thing to consider is its size and weight, which might require planning for space and support.

This mini split is well suited for owners looking for a powerful, versatile, and smart heating and cooling solution for a large garage or similar workspace, though it is a bigger commitment in terms of installation and upfront cost.

The COSTWAY 12,000 BTU mini split air conditioner is a solid choice for cooling and heating garage spaces up to around 750 square feet. It offers a balanced 12,000 BTU cooling capacity matched with a slightly higher heating capacity, making it practical for year-round use — especially important for garages which often require heating in colder months. Its energy efficiency is notable, boasting a high 21 SEER2 rating and Energy Star certification, which means it should keep running costs relatively low compared to less efficient models. The inverter technology helps maintain a steady temperature while using less power.

Installation requires a licensed HVAC professional and the unit comes with all necessary parts including copper piping and communication wires. While it's designed as a split system which might be a bit more complex than window units, it offers a cleaner look and quieter operation. Speaking of noise, at 41 decibels, it is fairly quiet, which is a plus for garage setups where loud noise can be distracting.

Smart and convenient features like a remote control with child lock, a 24-hour timer, sleep mode, turbo mode, and a self-cleaning function help make operation easy and maintenance less of a chore. The built-in heating function is powered by a heat pump, which is generally efficient for mild to moderate cold climates, though extreme cold may challenge its heating ability. One minor consideration is the voltage requirement (208-230V), which might require checking your garage’s power supply compatibility. Also, as with most mini splits, professional installation adds to upfront costs. This unit suits those looking to efficiently manage temperature and air quality in a garage space, offering a good mix of power, quiet operation, smart features, and strong energy efficiency.