Ductless Mini Split Cost (2026) — Typical US Range

Installing a ductless mini-split in a US single-family house — one wall-mounted indoor head, one single-zone outdoor unit, a common size often 9,000 to 18,000 BTU, mid-tier efficiency, a short line set, and a dedicated circuit the panel can already take — often clusters around $2,000–$5,500. That is the typical installed cost per zone, and it is the per-room figure when one room is one zone. The wider national spread, about $1,500–$30,000, covers a small 9,000 BTU head on an easy wall in a lower-cost area at the low end and a cold-climate whole-house install or a difficult line-set path at the high end. A two-zone system is often $4,500–$9,500. A whole-house job of five or more zones is often $13,000–$25,000. These are typical planning ranges, not a quote.

A mini-split is a ductless heat pump. One outdoor unit and one or more indoor heads heat and cool without using the ducts in the house. That is why this page is its own guide, next to the ducted heat pump, central air, and furnace bands, instead of a footnote on a system that already has ductwork.

The carton price is not the job. A single-zone kit at a home center can look like a few hundred to a couple of thousand dollars. The bid is the line set, the bracket or the pad, the electrical disconnect, the permit, startup, and the labor to core the wall. Square-foot rules of thumb are a poor way to pick BTUs. A tight bedroom and a sunny great room with the same floor area are not the same load. Price the zones and the walls you have, not a chart you saw on a forum.

The rows below are ways to read one job. They are not added together. A 12,000 BTU one-zone install is the 12,000 BTU row, and that row sits inside the one-zone row. A two-zone system of two 12,000 BTU heads is the two-zone row, not twice the 12,000 BTU row. A short line set, a short electrical run when the panel has space, a wall head, a gravity drain, and an ordinary permit are already inside the zone and BTU rows. Use an add-on row only when that assumption fails.

Scope	Typical planning range
1 zone, single-zone outdoor unit, wall head	$2,000–$5,500
2 zones, installed	$4,500–$9,500
3 zones	$7,000–$14,000
4 zones	$9,500–$18,000
5 or more zones, a whole house	$13,000–$25,000
9,000 BTU, one zone	$2,000–$4,000
12,000 BTU, one zone	$2,500–$5,000
18,000 BTU, one zone	$3,000–$5,500
24,000 BTU, one zone	$4,000–$7,500
36,000 BTU, one zone	$5,500–$10,000
Single-zone outdoor unit, one head	$2,000–$5,500
Two separate single-zone outdoor units	$4,000–$11,000
Multi-zone outdoor unit, 2 to 4 heads	The matching zone row
Line set longer than a short run	Often $300–$1,500 extra
Electrical circuit, short, panel has space	Included in the zone and BTU rows
Electrical circuit, long run	Often $1,200–$2,000
Ceiling cassette instead of a wall head	Often $800–$2,000 more per head
Condensate pump, when gravity will not drain	Often $200–$450
Permit	Often $50–$300, already inside the installed rows

A one-zone install in a lower-cost area, with a 9,000 or 12,000 BTU wall head and a line set that stays short, sits toward the floor of the typical band. The same zone in a high-labor metro, or an 18,000 BTU head, sits toward $5,500. A 24,000 or 36,000 BTU head is still one zone, and it leaves the typical band because the equipment is larger. Two, three, and four zones share a multi-zone outdoor unit, so each added head costs less than another complete single-zone system. At five heads a second outdoor unit is common, and that step is the whole-house row. A small house can be a whole-house job at the three-zone row, $7,000–$14,000, when three heads cover the rooms you actually use.

A single-zone outdoor unit serves one head. Two of those units, on opposite sides of a house, are often $4,000–$11,000, and that pair can beat one multi-zone condenser dragging two long line sets. A multi-zone outdoor unit is the usual bid when the heads sit close together. About $4,000 for a straightforward single-zone unit is the floor of the heat pump guide. That figure sits inside the one-zone band on this page. The floor here, near $1,500, is a smaller 9,000 BTU head on an easy wall in a lower-cost market.

What the range includes

The typical band assumes an existing single-family house, one ductless heat pump of a common residential size — often 9,000 to 18,000 BTU, which is a description, not a sizing rule — with the indoor head on an outside wall and the outdoor unit on a pad or a wall bracket within a short line set. It includes the outdoor unit, the wall head, the line set, a gravity condensate drain, a disconnect, refrigerant startup, a permit where the city requires one, and a dedicated circuit when the panel already has a legal space and the run is short. A basic remote or wall control is included. A communicating thermostat for a whole-house system is not.

BTU is the size of the head. A small bedroom or a home office is often talked about as 9,000 BTU, and that head often clusters around $2,000–$4,000. A larger bedroom or a modest living room is often 12,000 BTU, often $2,500–$5,000. A big living room is often 18,000 BTU, still inside the typical band at $3,000–$5,500, or 24,000 BTU, which leaves it at $4,000–$7,500. A 36,000 BTU head, often $5,500–$10,000, is a large open area. Those are the sizes bids use. Ceiling height, sun, insulation, and climate change the load. One zone is one room you want on its own control, except an open kitchen and living room, which is usually still one zone. A bathroom, a closet, or a hall is rarely its own zone.

An easy wall in a lower-cost area sits toward the floor of the typical band. A high-labor metro, a head that has to go on an interior wall, or an 18,000 BTU unit on that same short path sits at the top of the band. A 24,000 or 36,000 BTU single zone leaves the band and stays inside the wider spread.

The floor of the national spread, near $1,500, is that small single zone where the wall is open and the panel is already acceptable. It is not a two-zone system someone discounted, and it is not a carton price with no labor. The top, toward $30,000, is where a cold-climate whole-house install, long or buried line sets, and a hard path for several heads usually land. A main panel or service upgrade can clear that top. Treat a number above it as a different scope and ask which driver caused it.

A second zone shares the outdoor unit, the permit, and the trip to the electrical panel. It still needs its own head, its own line set, and a larger outdoor unit than a single-zone condenser. That is why two zones are often $4,500–$9,500, three zones often $7,000–$14,000, and four zones often $9,500–$18,000, instead of a stack of one-zone prices. Five or more zones, the whole-house row, are often $13,000–$25,000, and that is where a second outdoor unit usually shows up. A house that needs many large heads can fill the space between that row and the top of the spread.

SEER2 is the cooling rating on new equipment, and HSPF2 is the heating rating. A higher number costs more to buy. The typical band is a mid-tier single-zone unit, not the highest rating on a brochure and not the cheapest nameplate in the line. Efficiency does not fix a head that is too big or too small for the room. Oversizing short-cycles the unit and can leave the room clammy. A cold-climate model, sometimes sold as a low-ambient or hyper-heat unit, is built to keep heating capacity farther below freezing. A cold-climate single zone often sits from the upper part of the typical band to about $8,000. Cold-climate heads on a multi-zone system sit at the top of the matching zone row and can leave it. In a severe winter a standard mini-split can be the wrong heater even when the price looked right. Backup heat, where the climate needs it, is its own line.

Use this page when the house has no ducts, or when one room was never on the duct system: an addition, a garage apartment, a sunroom, a finished attic. Use the central air guide when a split-system air conditioner is being replaced and the ducts stay. That job often clusters around $5,500–$9,500, cooling only. Use the furnace guide when the question is a gas furnace on those same ducts, often $4,000–$6,500 for heat. Use the heat pump guide when one ducted air-source heat pump will heat and cool the house through ducts you keep, often $8,000–$18,000. Use the AC and furnace guide when both the gas furnace and the central air conditioner are replaced and the ducts stay, often $7,000–$14,000. A four-zone mini-split, often $9,500–$18,000, can land in the same money as that ducted heat pump. The cheaper whole-house path is usually the one that matches the ducts you have. A leaky duct system is not a reason to skip the comparison. Price the duct repair and the mini-split as two scopes.

A room that stays cold at the outside wall is not automatically a head that is too small. Thin attic insulation loses heat you already paid to move. Price that before you buy a larger BTU.

Some utilities and state programs rebate a high-efficiency or cold-climate ductless heat pump, and some ask for an AHRI-matched outdoor and indoor pair and a licensed install. Federal tax treatment changes. A credit that applied to an earlier purchase is not automatically available on a 2026 invoice. These ranges are before incentives. Ask which form the equipment can support, then confirm with the utility and a tax preparer before you treat a rebate as cash. Do not accept a bid that has already subtracted a credit you have not received.

None of the bands include a panel upgrade, often $2,000–$4,200 for a straightforward 100-amp to 200-amp swap, or a subpanel, often $900–$3,500 when the service can carry the load and the panel is only out of spaces. A long dedicated circuit is often $1,200–$2,000, in the same neighborhood as a long run on the 240-volt outlet guide. A mini-split lands on a disconnect, not a dryer receptacle. If the HVAC bid already includes the circuit, do not add that guide on top. Do not fold the panel into the mini-split bid, and do not fold the mini-split into the panel bid.

What moves the price

Driver	How it changes the bid
Zones	One zone is the typical band, $2,000–$5,500. Two zones are often $4,500–$9,500, three often $7,000–$14,000, four often $9,500–$18,000. Five or more, often $13,000–$25,000, is where a second outdoor unit usually shows up.
BTU	A 9,000 or 12,000 BTU wall head sits in the typical band. An 18,000 BTU head sits toward the top of it. A 24,000 BTU head, often $4,000–$7,500, and a 36,000 BTU head, often $5,500–$10,000, leave it.
Single-zone or multi-zone outdoor unit	One outdoor unit per head is simple, and two of them are often $4,000–$11,000 when the rooms are far apart. One multi-zone outdoor unit is the usual 2- to 4-zone bid when the heads are close.
Line set	A short run is inside the zone rows. A longer run is often $300–$1,500 more, and a buried line or a run through finished rooms sits at the top of that add. Extra refrigerant for a long line set belongs on the bid.
Electrical	A short dedicated circuit is inside the zone rows when the panel has a legal space. A long run is often $1,200–$2,000. A small 9,000 or 12,000 BTU head is sometimes 115 volts. Most larger heads, and nearly all multi-zone outdoor units, are 240 volts. The nameplate sets the breaker.
Head style	A wall head is the planning job. A ceiling cassette is often $800–$2,000 more per head. A floor console or a concealed head that uses a few feet of duct is the same kind of step up.
SEER2 and cold climate	Higher SEER2 and HSPF2 ratings cost more. A cold-climate single zone often runs from the upper part of the typical band to about $8,000.
Ducts	No ducts is this project. Usable ducts are the central air, furnace, and ducted heat pump guides. One room the ducts miss is one zone, not a whole-house replacement.
Drain and permit	Gravity drain and an ordinary permit, often $50–$300, are inside the installed rows. A condensate pump, when the line cannot fall, is often $200–$450.

If the outdoor unit will sit on a bracket over a walkway, say so. A pad on grade with a clear service path is the planning job. A unit that has to be carried through a finished house, or hung where a technician cannot stand, is labor. Snow clearance matters on a cold-climate install. A unit buried in a drift is not a rating problem.

A line set past a short run, on the order of 25 feet, is where the add-on row starts. Many single-zone units are charged for a short line and need refrigerant added once the line grows. Ask the bid to name the feet, the path, and whether extra refrigerant is included. A line set that shares a wall with both heads is a different job from one that crosses an attic.

The electrical tie-in follows the equipment. Ask for the voltage and the breaker on the bid. Spare spaces in the panel are not spare amperage. A load calculation decides whether the typical band applies. A service that cannot carry the new load is the panel guide. A service that can carry it, and is only out of legal spaces, may be a subpanel instead. A mini-split, a dryer, an electric range, and a car charger can be the same conversation. Say so before anyone prices one head.

Some utilities and rebates care about the AHRI match, the SEER2 and HSPF2 ratings, and whether the model is the cold-climate version. A bid that will not list the outdoor and indoor model numbers is not ready to compare, and it is not ready for a rebate form either. Compare incentives after the equipment price, not inside it.

DIY or hire

Hire. Handling refrigerant requires EPA Section 608 certification, and the dedicated circuit is not a homeowner add-on. Most jurisdictions treat the install as licensed, permitted work. Manufacturers also tie warranties to a licensed install and a startup record.

A pre-charged line set sold as a DIY kit does not turn the permit, the disconnect, or the warranty into a weekend project. The electrical connection is still a circuit landed in the panel. Opening a standard line set, or adding refrigerant because the line ran long, is the same restricted work as any other heat pump.

Homeowner work stops at the filters, keeping leaves and snow off the outdoor unit, and making sure a gravity drain line is not crushed or clogged. None of that is an installation. Do not open the line set, and do not “top off” refrigerant.

Hire even more clearly when the head is a ceiling cassette, when the line set is buried or fished through finished rooms, when the job is multi-zone, or when the panel is full. Those are the jobs where a cheap weekend mistake becomes a leak, a pump that never had a drain, or a warranty denial.

Repair or replace

Repair when the mini-split is under about 10 to 12 years old, it has been maintained, and one part failed: a remote, a sensor, a fan motor, a board, or a condensate pump. A failed pump is a common repair on a head that cannot gravity-drain, and it is a repair, not a new system, when the compressor and the coils are sound. Ask for the repair price next to a replacement price. A repair that is a large fraction of a new zone, on a unit already near the end of its life, is usually the wrong purchase.

Replace the head, the outdoor unit, or both when the compressor failed, a coil is leaking, the equipment is past about 12–15 years — a service life people plan around, not a warranty — or this is the second significant repair in a short span. One dead head on a multi-zone system is not automatically a new outdoor unit. Ask which piece failed. Replacing only the outdoor unit and leaving a mismatched head is how a low bid becomes a weak system.

Have the technician check charge, airflow, and the drain before you choose. A room that never gets comfortable is not, by itself, proof that the equipment is done. It may be a head in the wrong place, a filter packed shut, or an envelope problem. Have those checked before you buy BTUs you do not need. If the real limit is a room the central system never reached, the project may be one new zone on this page, not a replacement of the furnace or the central air.

How to use this number

Ask for bids that state the outdoor model, each indoor model, the BTU of each head, whether the outdoor unit is single-zone or multi-zone, the SEER2 and HSPF2 ratings, whether the model is cold-climate, the line-set length and path, wall head or ceiling cassette, gravity drain or a pump, the voltage and the breaker, who pulls the permit, and whether a new circuit or a panel upgrade is included. Compare one zone with $2,000–$5,500. Compare a 12,000 BTU head with $2,500–$5,000. Compare two zones with $4,500–$9,500. Compare a whole-house job of five or more zones with $13,000–$25,000, and a small house done in three zones with $7,000–$14,000. Compare a ducted house with the central air, furnace, and heat pump guides so a mini-split is not asked to price a job the ducts already do.

These bands are the cost of the work. They do not subtract a rebate or a tax credit. Where a utility or state program is open, it is a separate approval.

A very low bid on a “whole-house mini-split” is a reason to ask whether every head, the line sets, the circuit, and the permit are included, not a reason to celebrate. A high bid should name cold-climate equipment, a cassette, a long line set, a second outdoor unit, or the electrical service. Two or three local bids on the same zones and the same walls are the number that matters. How this site sets the band is explained on the methodology page.