Room and panel
West glass, vaulted shop ceilings, and how many people live in the room change the BTU. Then the panel — 115V on some 9k/12k, 230V on the bigger boxes.
Install
Treat the line set like the machine.
The head is what you see. The vacuum, flare, drain, and circuit decide whether it still runs in August on Center Star Road.
Standard single-zone install labor: $1,000. Equipment is separate (see pricing). 220V electrical is not included — new circuit, disconnect, outdoor whip, and panel work are your electrician or an adder. Many 110/115V units only need a dedicated indoor wall plug.
Head and condenser
High on the wall with a drain path. Outdoor unit on a pad or bracket. Manufacturer clearances, not a plant bed.
Permit
New mini splits need a mechanical permit with the AHJ in Spring Hill, Williamson, Columbia, and Franklin. Maury County does not require a permit for this work. Spring Hill exempts some like-for-like replacements — a new head is not that exemption.
Copper, vacuum, charge
Clean flares. Evacuate to spec. Add charge if the run beats the factory precharge. This is the name of the company.
Condensate
Gravity when the wall allows it. Pump only when it does not. No drain on the sidewalk.
Startup
Cool and heat check. Remote and app. Model and serial on the ticket. Warranty registration when the portal is up.