split system installation 4
https://aged-wiki.win/index.php/What_to_Expect_During_a_Split_System_Installation
Getting a split system installed means mounting both an indoor and outdoor unit, then running refrigerant lines and electrical wiring between them. The process can take a few hours, especially if your walls need patching or the outdoor unit requires a concrete pad. You'll want a professional to handle the vacuum and refrigerant charge to ensure efficient cooling.