Ductless mini split installation in Tucson
A ductless mini split is the simplest way to cool a garage or casita, or one room the central system can't keep up with. Fixr puts installation at $4,577 to $8,328, with a $6,357 national average.
Where a mini split makes sense
- A garage you work in or converted to a gym or office.
- A guest house or casita with no ducts.
- An addition or an enclosed patio the original ducts never reached.
- A west-facing bedroom that stays hot every afternoon.
- An older home where adding ducts would mean opening ceilings.
Each indoor head cools its own space, so it isn't a substitute for fixing an undersized or failing central system in the main house.
What it costs
Fixr lists ductless mini split installation at $4,577 to $8,328, with a $6,357 national average (updated January 31, 2025). Price goes up with each indoor head, the length of the line set, and any electrical work at the panel.
TEP's Efficient Home Program lists a rebate of up to $100 per ton for a mini split heat pump or air conditioner installed by a participating contractor. Many mini splits are heat pumps that also heat the room in winter; ask which kind you are being quoted.
Things to ask
- How the size was chosen for each room. A west-facing room with big windows needs more than its square footage suggests.
- Where the outdoor unit goes. Shade helps; a spot against a hot west wall doesn't.
- How the condensate drain is run, so it doesn't drip down the wall or stain stucco.
- Whether a dedicated circuit is needed and who does the electrical work.
Questions Tucson homeowners ask
How much does a mini split cost in Tucson?
Fixr's national figures are $4,577 to $8,328 installed, with a $6,357 average. Multi-room systems cost more. TEP lists a rebate of up to $100 per ton for qualifying installs.
Can a mini split cool a garage in Tucson summer?
Yes, if it's sized for the heat load. An uninsulated garage door and walls make a big difference, so ask the contractor whether insulating first would let you use a smaller unit.