Installing a mini split yourself can save time and money if you know the right...

https://blogfreely.net/rothesqlmw/how-do-i-reduce-vibration-noise-on-a-wall-mounted-mini-split-condenser

Installing a mini split yourself can save time and money if you know the right steps. Learn how to drill the perfect 3.5-inch hole through your wall without damaging wiring or insulation