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

https://kylersgreatblogs.lumenforgex.com/posts/what-happens-if-i-kink-the-mini-split-copper-line-even-a-little

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