A DIY mini split can heat and cool a garage, but check size, leaks, cold...

https://smoothdecorator.com/how-short-should-i-keep-the-line-set-run-for-a-garage-mini-split/

A DIY mini split can heat and cool a garage, but check size, leaks, cold rating, line path, and panel first. A 15A breaker may not fit. This guide helps you spot key specs, plan the job, and know when to stop and call a pro before you buy or drill.