Ductless Heat Pump Installation Cost: One Room vs Whole Home
What a ductless heat pump costs to install, how the price climbs with each indoor head, and which quote line items cause the big swings.
Installing a ductless heat pump (mini-split) typically costs $9,950 for a three-room system, with most quotes landing between $7,800 – $13,000 before GST/HST. A basic setup comes in around $5,100, and a premium whole-home system around $19,200.
That spread is mostly about how many indoor heads you buy and how hard each one is to connect to the outdoor unit. Here is how the price builds, and where quotes tend to swing.
How the price grows per head
A ductless system has one outdoor unit and one or more indoor heads, each serving a zone. Our figures are built from labour hours × local rates plus materials, checked against market prices and real quotes. The pattern we see:
- Single zone (one head): the lowest total, but the highest cost per room. You pay for the outdoor unit, electrical connection, permit and commissioning once, whatever the head count.
- Two to three heads: the sweet spot for cost per room. The fixed costs are shared, and one multi-zone outdoor unit serves everything.
- Four or more heads (whole home): the total climbs steeply. Larger outdoor units, more line sets and more wall work add up, and some homes need a second outdoor unit.
So the basic figure of $5,100 is a lean install, while $19,200 reflects many heads, longer runs and higher-spec equipment. Adding a head later is usually dearer than adding it at the start, because the outdoor unit may be too small and the electrician and installer return for a second visit.
The quote line items that cause the swings
Two quotes for the same number of heads can differ by thousands. Check these lines first.
Line set. This is the pair of insulated copper pipes (plus control wire) linking each indoor head to the outdoor unit. Cost rises with length, and a run hidden inside walls or through a finished ceiling costs far more than one on an exterior wall in a cover. Ask for the length per head in metres.
Electrical. The outdoor unit needs its own circuit and a disconnect. If your panel has room, this is modest. If it needs a new breaker panel or a long cable run, it can become one of the biggest extras. Electrical work needs a licensed electrician and usually a permit.
Wall bracket and outdoor pad. Wall-mounted heads need solid fixing; outdoor units sit on a pad, ground stand or wall bracket. A wall bracket for a second-storey or tight side-yard install costs more than a simple pad.
Condensate drain. Cooling and defrost produce water. A gravity drain through an exterior wall is cheap; a condensate pump, or a drain routed to an interior stack, adds cost and a future maintenance point.
Commissioning and vacuum. A proper install pulls a vacuum on the lines and tests for leaks. If a quote looks very cheap, check that this is included.
Which equipment choice moves the price
Equipment tier matters too, particularly cold-climate rating, which is worth paying for across much of Canada if you want the unit to heat in winter, not just cool in summer. If you are weighing a ducted system instead,
| Material | Typical | Usual range | Lifespan |
|---|---|---|---|
| Ductless multi-zone (whole home) | $10,900 | $8,450 – $14,100 | – |
| Ducted air-source heat pump | $12,000 | $9,350 – $15,600 | – |
| Dual-fuel hybrid (keeps gas furnace) | $13,000 | $10,100 – $16,900 | – |
shows how the system types compare, and our guide to Heat pump installation covers whole-home ducted installs.
Ductless or ducted for a whole home?
If your house already has good ductwork, a ducted system is often simpler than four or five ductless heads. If you have no ducts, or an addition, converted garage or older home with hot-water heating, ductless usually wins because it avoids opening up walls and ceilings for ducts. A hybrid that keeps a gas furnace for the coldest days is another route; see our Furnace replacement guide if your furnace is near the end of its life, since replacing both at once can change the best answer.
Grants and tax
The federal Greener Homes Grant and Loan are closed. In Ontario, the Home Renovation Savings programme offers up to $7,500 for a cold-climate air-source heat pump in electric, oil, propane or wood-heated homes, or up to $2,000 for gas-heated Enbridge customers. It requires pre-approval and a participating contractor, so apply before you sign. Oil-heated homes may also have been eligible for the federal Oil to Heat Pump Affordability programme, though applications closed on 31 July 2026 in Alberta, Manitoba, the Northwest Territories, Quebec and Saskatchewan. Our figures are before GST/HST (13% HST in Ontario, 5% GST in Alberta).
How to compare quotes
- Ask every contractor to quote the same number of heads and the same cold-climate rating.
- Get line set length, electrical work and condensate handling itemised.
- Check who files the permit and whether electrical work is done by a licensed electrician.
- Run the totals through our "is my quote fair" tool to see where each sits against the range above.
If one quote is thousands lower, it is usually because a line is missing, not because the installer is cheaper. Ask what is left out before you accept.