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 Senville LETO Series Mini Split Air Conditioner Heat Pump offers a solid solution for those looking to regulate temperature in a garage or similar space. With a BTU capacity of 9,000, it's well-suited for areas up to 400 square feet, making it appropriate for most standard-sized garages. The SEER rating of 21.5 indicates high energy efficiency, which can help reduce electricity bills over time, though it's worth noting that it's not Energy Star compliant. This model is notable for its versatility, offering not just air conditioning but also heating, dehumidifying, and fan functions, with the heat pump being effective down to 5°F (-15°C).

One of its standout features is the integration with Alexa, allowing for convenient voice control and smart home compatibility, which adds a layer of modernity and ease of use. The noise level is very low at 25 dB, ensuring minimal disruption whether you're working or relaxing in the garage.

The installation package is comprehensive, including both indoor and outdoor units, a 16 ft. line set, and a communication wire, though professional installation is required, which could add to the initial cost. While it does come with a robust 5-year warranty on parts and compressor, labor costs are not covered. Its stylish design won't detract from the aesthetics of your space, and it should fit well in both residential and commercial settings. However, if you're keen on a DIY solution, this isn't the unit for you, as professional setup is necessary. The product is backed by a high number of positive customer reviews, suggesting satisfaction with performance and build quality.

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.