Installing a mini split yourself can save money but requires careful planning....

https://melissafreshmaid.com/ladder-work-on-a-second-story-mini-split-install-when-is-it-too-risky/

Installing a mini split yourself can save money but requires careful planning. This article shows how to drill the correct 3-3.5 inch hole through your wall for the lines and explains choosing between 115V and 230V power options