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

The MRCOOL DIY 24K BTU 4th Gen Mini-Split Air Conditioner is a solid choice for garage cooling and heating needs. With a powerful 24,000 BTU capacity, it can efficiently manage temperatures in spaces up to 1,000 square feet. The impressive 20.5 SEER rating ensures energy efficiency, which is further validated by its Energy Star certification. This means it will help keep energy bills lower while maintaining high performance.

Additionally, the unit operates at a relatively quiet 33 dB, ensuring minimal noise disruption, which is ideal for a garage setting where noise can be a concern. The heating capability with a 10.5 HSPF is a nice bonus, allowing for year-round climate control even in colder months. One of the standout features is its DIY installation, as it comes with pre-charged R-410 quick-connect lines, meaning it's user-friendly and doesn't require professional installation.

Smart features are also a major plus, with the ability to control the unit remotely via an app on your smartphone, providing convenience and enhanced control. However, the unit is quite large and heavy, which might pose installation challenges for some users. Furthermore, although the unit is designed to be a DIY install, those unfamiliar with such installations might still find it somewhat daunting. Despite these minor drawbacks, the MRCOOL DIY 24K BTU 4th Gen Mini-Split Air Conditioner is an efficient, powerful, and smart choice for anyone looking to manage their garage's climate effectively.

The MRCOOL DIY 5th Gen mini-split is a solid choice for cooling and heating a garage space up to about 350 square feet. Its 9,000 BTU capacity is well-suited for smaller areas like garages, offering efficient climate control without using excessive power. The unit’s high SEER rating of 23.6 means it runs efficiently, helping keep energy bills lower. Installation is one of its biggest strengths—designed for DIY with pre-charged line sets and no need for special tools, making it manageable even if you’re not an expert.

It runs quietly at around 45 dB, so it won’t add much noise to your workspace. The combined heating and cooling feature means it’s useful year-round, which is great if your garage isn’t insulated well or gets cold in winter. On the smart features side, it includes WiFi control compatible with Google Assistant and Alexa, allowing easy remote adjustments. However, the unit’s 115V power might limit its ability to cool larger or poorly insulated garages effectively. Also, while the noise level is low, some users might notice it if absolute silence is a priority.

The included 25-foot install kit is convenient but may require extra parts if your garage layout is unusual or larger than average. With a 5-year parts and 7-year compressor warranty, it offers good reliability. This mini-split is a handy, energy-efficient option for typical garage spaces, especially for those comfortable with a simple DIY installation and wanting smart control features.

The MRCOOL DIY-12-HP-WM-115D25O mini-split AC is a solid choice for cooling and heating a garage or similar space between 350 and 550 square feet. With a cooling power of 12,000 BTUs and a very efficient SEER rating of 23.5, it uses less energy than many traditional units, which can save you money on electricity bills. It also offers heating capability with a decent HSPF rating (10.2), making it useful year-round, especially in chilly garages.

One of its standout features is the ease of installation—it's designed for do-it-yourself setup with a pre-charged refrigerant line that doesn’t require professional tools or training. This can save on installation costs and hassle. The unit runs at about 45 decibels, which is quieter than many air conditioners but might still be noticeable in a very quiet garage.

The MRCOOL unit includes smart features like WiFi control through the SmartHVAC app, compatible with Alexa and Google Assistant, so you can adjust settings remotely from your smartphone. This adds convenience and modern functionality. It is designed primarily for smaller spaces, so if your garage is larger than 550 sq ft, you might need a more powerful AC. Also, while the 45 dB noise level is reasonable, it’s not the quietest option available if noise is a major concern. The 115-volt power requirement is standard for most garages, but worth checking against your circuit capacity. This mini-split AC suits garage owners looking for an energy-efficient, easy-to-install solution with smart controls and both heating and cooling ability. It balances good performance with user-friendly features, though it’s best for modest-sized spaces and might not be the quietest choice.