DIY a mini split in your garage? See how to size it, check a 15A breaker, seal...

https://andysinspiringcolumns.yousher.com/should-i-extend-central-ductwork-into-my-garage-or-install-a-mini-split

DIY a mini split in your garage? See how to size it, check a 15A breaker, seal the line-set hole, and plan for cold snaps