Installing a mini split system yourself in the US offers a unique combination...

https://www.scribd.com/document/1013318156/Why-HVAC-Quotes-Are-So-High-A-Practical-Guide-for-DIY-Friendly-Homeowners-123814

Installing a mini split system yourself in the US offers a unique combination of cost savings, energy efficiency, and control—if you’re willing to put in the effort