$2,500–$5,600 for a 12,000 BTU single-zone mini-split in the US, installed — $3,900 typical. A 9,000 BTU zone runs $2,200–$4,800, two zones $4,500–$10,000, and four zones $8,000–$18,000.
Single zone: $2,200 (9,000 BTU) to $11,500 (36,000 BTU)
12,000 BTU single zone: $3,900 typical
2 zones $4,500–$10,000; 4 zones $8,000–$18,000
Install only, with your own unit: $500–$2,000 if a contractor will take it on
Yearly cleaning and service: $100–$400
Prices verified November 2026 · Cross-referenced against 45+ American pricing sources · See methodology
01 / PricesUSA · November 2026
Mini-split prices by size and zones (2026)
Installed prices with a standard line set, pad or wall bracket, and electrical hookup. National figures, November 2026.
Mini-split prices by size and zones (2026)Installed, low to high with the typical price marked.
Capacity and zone count. A 9,000 BTU head cools a bedroom for $2,200–$4,800; a 24,000 BTU unit handles a large open room for $3,800–$8,800. Each extra zone adds an indoor head, a line set run and a few hours of labor, so a 2-zone system runs $4,500–$10,000 and a 4-zone system $8,000–$18,000.
Install details move it too: long line runs, a head on an inside wall, a ceiling cassette instead of a wall unit, a new 240-volt circuit, or an outdoor unit on a roof or wall bracket all add cost. Cold-climate models cost more but keep heating well below freezing.
02
Like-for-like swaps and install-only jobs
Replacing an old mini-split with a new one of the same size, on a line set that can be reused, runs $2,300–$5,200. Ask whether the old line set is the right size and cleanliness for the new refrigerant.
If you buy the unit yourself, labor-only installs run $500–$2,000, but many contractors will not install customer-supplied equipment or will not warranty it. Brand warranties often require a licensed installer.
03
Compare
Mini-split or central AC?
With good ducts, central AC is cheaper per room: a 3-ton system cools a whole 1,600–2,000 sq ft home for $4,000–$9,000. Without ducts, a multi-zone mini-split usually costs less than adding ducts, which runs $2,500–$9,500 on top of the AC.
Mini-splits are cheap to run: one 12,000 BTU room at 22 SEER2 costs about $150 a year to cool at the US average electricity rate.
04
Watch out
Permits and red flags
Most places require an electrical and often a mechanical permit for a mini-split. Be wary of quotes that skip the vacuum and pressure test, run line sets without a cover, or leave the outdoor unit on the ground where snow or water collects.
05
Compare
One multi-zone system or several single-zone systems?
For two or three rooms, you can use one outdoor unit for all of them or one outdoor unit per room. Typical installed prices:
Option
Typical price
Outdoor units
If an outdoor unit fails
Two rooms: one 2-zone system
$6,500
1
Both rooms lose heating and cooling
Two rooms: two 9,000 BTU single-zone systems
$6,600 (2 × $3,300)
2
The other room still works
Three rooms: one 3-zone system
$9,000
1
All three rooms lose heating and cooling
Three rooms: three single-zone systems (9,000 + 12,000 + 12,000 BTU)
$11,100 ($3,300 + $3,900 + $3,900)
3
The other two rooms still work
For two rooms the price is close, so single-zone systems give you backup for little extra. For three or more rooms, one multi-zone system usually costs less. Single-zone systems are also easier to size, because each one is matched to its own room.
06
Worked example
Worked example: one 12,000 BTU zone over five years
The install is not the only cost. Here is a single living-room mini-split with yearly professional cleaning, at typical prices.
Professional cleaning and service, once a year for 5 years5 × $200
Five-year total at typical prices$4,900
Power use is extra. Clean the filters yourself every month in season to keep cleaning visits short.
07
Compare
What each size is usually used for
These are rough guides only. Sun, ceiling height, insulation and climate change the size you need.
Size
Installed price
Common use
9,000 BTU
$2,200–$4,800
A bedroom or home office
12,000 BTU
$2,500–$5,600
A large bedroom or a living room
18,000 BTU
$3,200–$7,200
An open living and kitchen area
24,000 BTU
$3,800–$8,800
A large open space or a finished basement
30,000–36,000 BTU
$4,800–$11,500
Several open rooms, such as a small home's main floor
Ask for a load calculation (Manual J) for each room. A head that is too big turns on and off often and does a poor job of drying the air.
08
Checklist
Check these before you sign a mini-split quote
A full quote should spell out each item below.
The brand and model of the outdoor unit and every indoor head.
The size of each head, picked for that room.
Where each head goes, and where its drain water will go.
Whether a condensate pump is needed for a head on an inside wall.
The line set length for each head and whether a cover is included.
A new 240-volt circuit and an outdoor shutoff switch, if they are needed.
A stand or wall bracket that keeps the outdoor unit above snow and standing water.
A pressure test and a deep vacuum, checked with a micron gauge, before the refrigerant is released.
The refrigerant type (R-32, R-454B or R-410A).
A cold-climate rating if the system will be your main heat.
Who pulls the permits, and the parts and labor warranty terms.
09
Watch out
Mini-split install red flags
Watch for these on the quote or on install day.
Every room gets a big head "to be safe" with no load calculation.
The installer does not use a micron gauge or skips the vacuum step.
A new system needs refrigerant added soon after the install. That points to a leak.
The line set is left bare on the outside wall, with no cover or support.
The drain line empties onto a walkway, deck or right at the foundation.
The outdoor unit sits on the ground in a place that gets deep snow.
The electrical work is done with no permit.
The installer will not register the warranty or says the brand warranty does not matter.
10
Watch out
Mini-split rules and refrigerants in 2026
Most new mini-splits use R-32 or R-454B refrigerant. These replace R-410A. An EPA rule lets contractors install R-410A mini-splits made before January 1, 2025 until that stock runs out, except in New York State.
A ductless heat pump must meet at least 14.3 SEER2 for cooling and 7.5 HSPF2 for heating, nationwide. Most mini-splits are rated far above that.
There is no federal tax credit for a mini-split installed in 2026. The heat pump credit (up to $2,000 a year) covered work done through December 31, 2025. Check your state and utility for rebates.
11
Tip
Using a mini-split as your main heat
Most mini-splits heat as well as cool. In cold places, pick a model sold as cold-climate. Check its heating output at 5°F, not just at 47°F.
Heads only heat the rooms they are in. Closed-off rooms, like bedrooms down a hall, may need their own head.
In the coldest parts of the country, many homes keep the old furnace or baseboard heat as backup for the worst days. Ask your installer what they suggest for your climate.
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05 / Questions11 answers
Mini-split installation cost: FAQ
How much does a 12,000 BTU mini-split cost installed?
$2,500–$5,600, with $3,900 typical. That size usually suits one large room or a small open area; ask for a load calculation to be sure.
How much is a 4-zone mini-split?
$8,000–$18,000 installed. Wall heads are cheapest; ceiling cassettes and ducted air handlers cost more per zone.
Can I install a mini-split myself?
DIY kits exist, but most systems need refrigerant handling and a 240-volt circuit, and brand warranties often require a licensed installer. Paying for labor alone runs $500–$2,000 if you can find a contractor to do it.
Do mini-splits heat as well as cool?
Most do: they are heat pumps. Cold-climate models keep producing heat well below freezing.
How often does a mini-split need cleaning?
Clean the filters monthly in season and have the coils and blower wheel professionally cleaned about once a year, at $100–$400.
How much does a 2-zone mini-split cost?
$4,500–$10,000 installed, with $6,500 typical. That covers one outdoor unit and two indoor heads.
How much does a 24,000 BTU mini-split cost?
$3,800–$8,800 installed for one zone, with $6,200 typical. That size is often used for a large open room or a finished basement.
Is one multi-zone mini-split cheaper than several single-zone units?
For three or more rooms, usually yes. A 3-zone system runs $6,000–$13,500, while three single-zone systems cost more in total. For two rooms the price is close, and two single units give you backup if one fails.
How much does a mini-split cost for a whole house?
A 4-zone system runs $8,000–$18,000 and a 5-zone system $10,000–$21,000. If your home already has good ducts, central air may cost less. See mini-split vs. central AC cost.
Is there a tax credit for a mini-split in 2026?
No federal one. The heat pump credit covered work done through December 31, 2025 (irs.gov). Check your state and utility for rebates.
Do I need a permit for a mini-split?
Most places need an electrical permit, and many also need a mechanical permit. A licensed contractor normally pulls them. Ask for this to be listed on the quote.
These are independent estimates built from national cost guides, local reported-job averages, manufacturer and utility pages and EIA energy prices. No contractor can pay to change them, so always get a couple of quotes. Last reviewed November 2026. Read the full methodology →