A DIY garage mini split can warm your shop, but fit, leaks, and power count....

https://www.adirs-bookmarks.win/thinking-about-a-mini-split-for-the-garage-this-diy-guide-covers-sizing

A DIY garage mini split can warm your shop, but fit, leaks, and power count. Learn to size it, check a 15A breaker, seal gaps, and price the job