In larger properties and commercial structures we can utilize Variable Refrigerant Circulation (VRF) systems that can have more than 10 interior systems linked to them. https://Pipewiki.org/wiki/index.php/When_The_Scorching_Summer_Warm_Gets_Here_The_Last_Thing_You_Desire_Is_For_Your_Cooling_And_Heating_System_To_Damage_Down_On_You.