What Size Mini Split Is Needed for a Garage?

You’ve decided that you’d like more adequate heating or cooling in your garage, as currently, this is one of the most uncomfortable spaces in your home. In the wintertime, it’s freezing in there, and in the summer, it feels like sitting in a sweatbox. You’re miserable either way, which is a real shame if you use your garage as a workshop or a recreational space. Even if it’s just where you store your lawnmower, beach chairs, and holiday decorations, you never want to be in there for more than a few minutes.

That can all change with a mini split system in your garage. On its own, the system will cool the heated garage and warm up a cold space in the winter. By combining the mini split with insulation, you can trap this air in even longer so you can finally use your garage the way you want to.

Just which size mini split should you use for your garage heating and cooling endeavors? That will depend on how big your garage is.

For example, let’s say you have a smaller garage that’s between 150 and 250 square feet. Perhaps your garage isn’t this small, but you only need a portion of the garage to be heated/cooled because it’s always uncomfortable in that one corner. Either way, you should get a single zone mini split capable of producing 6,000 BTUs of heating/cooling, so a standard unit of a regular size.

If you need 250 to 300 square feet of cooling, then the mini split only has to produce an extra 1,000 BTUs of heating/cooling, so 7,000 BTUs overall. In that case, you can also get away with using a standard mini split for your garage.

Once you exceed 300 square feet to 350 square feet of space, your heating/cooling needs increase even further. Now you must have a mini split capable of running at 8,000 BTUs, which may be somewhat of a larger unit. The same is true if your garage requires a mini split that’s 9,000 BTUs, which would be the case if you have a garage floorplan that’s 350 to 400 square feet.

What if your garage is significantly large, such as 550 to 700 square feet? Now your mini split system should provide heating/cooling at a rate of 14,000 BTUs. As you can imagine, you’re getting into the heftier mini split systems, as that’s some serious heating and cooling.

If your garage by chance exceeds 1,000 square feet, then it’s imperative your mini split system run at 21,000 BTUs. You might need several mini splits for this level of heating/cooling. That’s also likely the situation for garages that are 1,200 to 1,400 square feet and have a mini split system providing heating/cooling at 23,000 BTUs.

No matter which kind of ductless mini split your garage requires, at PowerSave AC, we’re confident we can provide it. We specialize in single-zone and multi-zone mini splits, including two-zone, three-zone, four-zone, and five-zone systems. To discuss your garage heating and cooling project with us today, please call 1-877-297-6594.