Installing a mini split yourself can save money but requires careful planning....
https://mighty-wiki.win/index.php/Mini_Split_in_a_Micro_Cabin_or_Shed:_Single-Zone_the_Easiest_Starting_Point
Installing a mini split yourself can save money but requires careful planning. In this guide, I’ll walk you through drilling the right size 3-3.5 inch hole for the line set and choosing between 115V or 230V power options