While a mini-split can be a smart climate control choice for a garage, like all things in life, you need to consider the pros and cons. The benefits are fairly straightforward: if you need to cool your garage quickly, many single-zone mini-splits can be professionally installed in a day. Mini-splits also don't require ductwork and can efficiently heat and/or cool a garage, depending on the model. It's worth comparing models that are appropriately sized for your garage and offer the features you need. If your garage lacks proper insulation, you may need a larger-capacity unit than you expect to keep the space comfortable.