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

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.

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 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.