Ductless mini-split prices in Ontario (2026)
A single-zone ductless mini-split typically costs $3,500 to $6,500 installed in Ontario, and a multi-zone system with three to five indoor heads $9,000 to $18,000, before HST. The number of heads, the line-set runs and the electrical work explain most of the gap between quotes.
Mini-split prices in Ontario, 2026
Heats and cools$3,500to$18,000
Typical installed price, Ontario 2026, all options shown
- Ductless mini-split, single zoneone indoor head $3,500 to $6,500
- Ductless mini-split, multi-zone3 to 5 indoor heads $9,000 to $18,000
Typical installed price in Ontario, before 13% HST ($3,955 to $20,340 with HST). Assumes wall-mounted heads, a standard line-set run and an outdoor unit on a stand or bracket. A panel upgrade, if needed, is extra.
On this page
When a ductless system makes sense
A mini-split is an air-source heat pump without the ducts: an outdoor unit connected by refrigerant lines to one or more indoor heads, each heating and cooling the space it sits in. It earns its price where ducts are missing, impractical or not reaching:
- Homes heated by a boiler and radiators, which have no ducts for central air
- Homes heated by electric baseboards, where a heat pump can take over most of the heating
- Additions, sunrooms and finished attics the existing ducts never reached
- Finished basements and basement second units that need their own controls
- A single room that always runs hot or cold, such as the room over the garage
If you already have sound ductwork, a ducted heat pump usually heats the whole house more evenly with one indoor unit; the price index on OntarioFurnacePrices.ca shows both options on one scale. Boiler homes can keep the boiler for deep winter; if it is due for replacement anyway, check boiler prices first. For a basement second unit, ask about permit and building code requirements before choosing how the two suites are heated.
Single-zone, multi-zone or ducted
| Option | Typical installed price | Best for | Trade-offs |
|---|---|---|---|
| Single-zone mini-split | $3,500 to $6,500 | One open area, an addition, a basement or one problem room | Heats and cools only the space it serves; walls and closed doors block it |
| Multi-zone mini-split (3 to 5 heads) | $9,000 to $18,000 | Homes without ducts that want most rooms covered | One outdoor unit serves every head, so one fault affects every zone; small rooms can end up with oversized heads |
| Ducted cold-climate heat pump | $9,000 to $18,000 | Homes with usable ducts | Needs sound ducts and an indoor air handler or furnace; duct changes cost extra |
Before 13% HST. A two-zone system usually falls between the single-zone and multi-zone ranges.
A fourth option is two or three separate single-zone systems instead of one multi-zone system. You get more outdoor units on the wall, but each zone runs independently, and single-zone models often carry stronger low-temperature ratings than multi-zone outdoor units. Compare the published heating capacity at -15°C (5°F) for each option before you decide.
What moves the price
-
Number of indoor heads
Raises the price: The biggest driver
Each head adds equipment, a line set, a drain and a wall penetration, and pushes the outdoor unit size up.
-
Head type
Can go either way: Varies by type
Wall-mounted heads cost least. Floor consoles, ceiling cassettes and concealed ducted units cost more and take longer to install.
-
Line-set length and route
Raises the price: Copper and labour
Straight through an exterior wall is cheapest. Runs inside finished walls, between floors or across the house add materials and hours.
-
Outdoor unit mounting
Raises the price: Stand or bracket
The unit has to sit above the snow. A ground stand is usually simpler than a high wall bracket or a roof mount.
-
Electrical circuit
Raises the price: +$500 to $2,500
A dedicated 240-volt circuit and a disconnect beside the outdoor unit. Long runs from the panel cost more.
-
Panel upgrade
Raises the price: +$2,000 to $4,500
Only when the panel has no space or capacity left for another large circuit.
-
Condensate pump
Raises the price: +$150 to $350
Needed when a head cannot drain by gravity, typically on an interior wall or below grade.
-
Cold-climate rating
Raises the price: Higher equipment cost
Models built to heat at very low temperatures cost more than cooling-first models. They are the ones to buy if the mini-split will do real heating.
Indoor heads: how many and which type
Plan one head per room or open area you want to control. An open main floor may need only one; a hallway of closed bedrooms needs a head in each room or a different approach. Resist oversizing: the smallest head some multi-zone systems offer can exceed what a small bedroom needs, and an oversized head short-cycles, which hurts comfort and dehumidification.
| Head type | Where it goes | Good for | Cost compared with a wall head |
|---|---|---|---|
| Wall-mounted | High on a wall | Most rooms; the default choice | Lowest |
| Floor console | Low on the wall, often under a window | Heating-led rooms, attic rooms with sloped ceilings | Higher |
| Ceiling cassette | Recessed into the ceiling | Open areas where wall space is scarce | Higher; needs ceiling space |
| Concealed duct (slim ducted) | Hidden in a bulkhead or attic | Two or three small rooms through short ducts | Higher; more installation work |
Line sets, wall holes and the outdoor unit
Each head connects to the outdoor unit by a line set: two insulated copper refrigerant lines, a condensate drain and a control cable, usually through a hole about 75 mm (3 in) across. The shortest route is straight through the exterior wall behind the head; runs through finished walls or between floors take more copper and labour. Every model has a maximum line length and a length it is factory-charged for. Beyond that, refrigerant is added on site, and in Ontario that work requires an Ozone Depletion Prevention (ODP) card. Ask whether exterior line-set covers are included: they protect the lines and look far tidier than bare insulation.
Outside, Ontario winters set the rules. The outdoor unit should sit on a stand or wall bracket high enough to stay above drifting snow, away from roof edges that drip or shed ice, with clear space around it for airflow. It sheds water when it defrosts, and that water refreezes, so keep it away from walkways, steps and the driveway. On a bedroom wall, ask for vibration isolation pads on the bracket.
Price your mini-split room by room
Head count, line-set routes and electrical work set the real number. A free in-home estimate puts each one in writing.
Free, no obligation. About a minute to request.
Electrical and condensate
Every outdoor unit needs a dedicated 240-volt circuit and a disconnect switch beside it. Electrical work for a heat pump typically runs $500 to $2,500, more when the panel is far from the outdoor unit, and a full panel may need an upgrade at $2,000 to $4,500. In Ontario this work needs an Electrical Safety Authority (ESA) permit.
Indoor heads make condensate when cooling. Most drain by gravity through the wall alongside the line set; heads on interior walls or below grade often need a small condensate pump at $150 to $350, which adds a little noise and one more part to maintain.
Primary heat or a supplement?
Cold-climate mini-splits can heat a space through most of an Ontario winter, and many are rated to keep running at -25°C or lower. The limit is usually the layout, not the cold: each head only heats its own zone, so closed rooms off a hallway may stay cooler unless they have their own head. That is why keeping some existing heat as backup is the usual advice.
In a baseboard home, the mini-split can become the main heat, with baseboards as backup for closed rooms and the coldest nights. The running-cost case is strongest here: at the default rate of about $0.15 per kWh, baseboard heat costs 15.0¢ per kWh, while a heat pump averaging a seasonal COP of 2.5 makes the same heat for about 6.0¢. In a boiler home, it adds cooling and covers the shoulder seasons while the boiler handles deep winter. Check your numbers in the heating cost calculator or the heat pump cost calculator.
Rebates for mini-splits
Ductless mini-splits are air-source heat pumps, so they come under the heat pump stream of Home Renovation Savings when the model, the home and the application qualify. As published at our October 4, 2026 check, the amount depends on how the home is heated and on the rated heating capacity; homeownership, home type and product eligibility rules apply; and pre-installation approval is mandatory. Replacing an existing heat pump used for space heating is excluded.
We do not quote an amount for a mini-split here, because whether a particular system qualifies, and for how much, depends on the product list and your application. The published per-ton rates are in heat pump rebates in Ontario. Programs change, so confirm before you sign.
Sources
- Home Renovation Savings: heat pumps checked October 4, 2026
- Home Renovation Savings: terms and requirements checked October 4, 2026
Questions to ask before you sign
Bring these to every mini-split quote
- How many heads, what size is each one, and how did you size them for each room?
- What line-set length is included, and what does extra length cost?
- Are line-set covers, the stand or wall bracket and the outdoor pad in the price?
- Where will each head drain, and will any need a condensate pump?
- Is the electrical work and the ESA permit included?
- What are the published heating capacity and efficiency at -15°C (5°F) for this exact pairing?
- What warranty applies, does it need registration, and is the model eligible for Home Renovation Savings?
Questions people ask
How much does a ductless mini-split cost in Ontario?
A single-zone system with one wall-mounted head typically costs $3,500 to $6,500 installed, before HST. Multi-zone systems with three to five heads run $9,000 to $18,000, and two-zone systems usually land between the two. Long line-set runs, ceiling cassettes or concealed units, electrical work and a panel upgrade push quotes toward the high end.
Can a mini-split heat a whole house in an Ontario winter?
A cold-climate model can produce heat at -25°C or lower, so the cold is rarely the problem. The layout is: each head heats only its own zone, so a whole house needs enough heads in the right places, and closed rooms may lag behind. Keeping baseboards or a boiler as backup for the coldest nights is sensible.
How many indoor heads do I need?
Usually one per room or open area you want to heat and cool on its own. An open-concept main floor may need just one head, while each closed bedroom needs its own. A room-by-room heat loss calculation sets the size of each head, which matters because an oversized head in a small room cycles on and off and controls humidity poorly.
Is a mini-split cheaper to run than electric baseboards?
For heating, yes, by a wide margin. Baseboards turn each kWh of electricity into one kWh of heat. A heat pump averaging a seasonal COP of 2.5 makes 2.5 kWh of heat per kWh, so at about $0.15 per kWh the same heat costs roughly 6.0¢ instead of 15.0¢. Real savings depend on how you use it and on the model.
Can I install a mini-split myself?
Some kits are sold for do-it-yourself installation, but in Ontario refrigerant handling requires an Ozone Depletion Prevention card, and the 240-volt circuit needs an Electrical Safety Authority permit. Manufacturer warranties often require professional installation, and Home Renovation Savings requires pre-approval before installation, so check both before you buy a kit.