What Does a Ductless Mini Split Cost, Head by Head?

Frequently asked questions

How much does a mini split cost to install in Toronto?

One indoor head runs $3,000 to $5,500 installed before HST across the three GTA sources behind this page, and a cold climate rated single zone is a different band entirely at $5,000 to $9,000. Two zones is $6,000 to $9,000 and three zones $8,000 to $12,000, both published outright by Megacity HVAC. Past three heads nobody publishes a system price, so the calculator adds Ontario HVAC Quotes' figure of $1,500 to $3,000 per additional head and tells you it has done so.

Why does the price per head fall as I add heads?

Because one outdoor unit is doing more work. The condenser, the electrical connection, the refrigerant line routing and the labour of getting a crew to your house are largely fixed, and a second or third head adds an indoor unit, a line set and a wall penetration rather than a whole system. That is why a one zone job at $3,000 to $5,500 does not simply triple into a three zone job, and why the per-head figure in the panel drops as the count goes up.

Is a ductless system cheaper than a ducted heat pump?

For one room, comfortably. For a whole house, not reliably. A single head heats one space for $3,000 to $5,500 while a central ducted system starts at $5,000, so the comparison looks lopsided until you count rooms. By four or five heads a ductless system overlaps the ducted range, and the honest deciding factor is not price but whether the house has ductwork worth connecting to. A house with good ducts should usually use them.

Do these prices include the outdoor unit?

Yes. Every row behind this calculator is an installed system price covering the outdoor unit, the indoor heads, the line sets, the mounting and the labour, quoted before HST and before any rebate. What none of them covers is drywall repair, electrical panel work if the service cannot carry the load, or a condensate pump where gravity drainage is not available. Those belong on the quote as separate lines.

Where does the four and five zone number come from?

An addition, and the page says so on the result rather than in a footnote. Megacity HVAC's three zone row is the base, and Ontario HVAC Quotes' published price for each additional indoor head, $1,500 to $3,000, is added once for a four head system and twice for a five. Two other sources publish whole-system multi zone bands that overlap those configurations, and both are shown beside the answer as a cross-check rather than merged into it, because widening a five head estimate to cover a two head one would leave a range that means nothing.

How big should each head be?

Room by room rather than by rule, though a rule is a useful sanity check. The BTU calculator on this site applies every published Canadian rate per square foot to one room at once, which puts an ordinary bedroom somewhere between 5,000 and 10,000 BTU per hour depending on which rule you trust. A head that is too large short cycles and dehumidifies badly in summer, which is the failure people notice long before they notice a heating one.