In Ottawa, AC installation typically costs between $4,500 and $8,500 installed in 2026 for a standard central air conditioner, with most homeowners landing around $5,500 to $6,800 for a mid-efficiency 2.5–3 ton system replacing an existing unit. A basic 13.4 SEER2 entry-level system on an existing lineset and pad can come in near $4,000–$5,000, while a high-efficiency two-stage or variable-speed unit with a new lineset, electrical upgrade, and permit runs $8,000–$12,000. Ductless mini-splits are priced differently: expect $4,000–$6,500 for a single-zone head and $9,000–$16,000 for a three- or ...
Central air conditioners are priced by tonnage (cooling capacity) and efficiency rating. In Ottawa for 2026, a 2-ton unit suited to a smaller bungalow or townhome runs roughly $4,500–$6,000 installed. A 2.5–3 ton system — the most common size for an Ottawa detached home of 1,500–2,200 square feet — typically costs $5,000–$7,500. Larger 4–5 ton systems for bigger homes in Kanata Lakes, Barrhaven, or Riverside South run $7,000–$10,500. Efficiency drives the rest: the minimum legal rating in Canada...
Swapping an existing unit is the cheaper path because the ductwork, lineset, electrical circuit, and pad are already there. Adding AC to a home that has never had it — common in older Westboro, Hintonburg, and Alta Vista houses — adds $1,500–$4,000 for a new refrigerant line run, dedicated 240V circ...
If your home has no ductwork — think a century home in Sandy Hill, a converted attic, an addition, or a garage workshop — a ductless mini-split is usually the better value than retrofitting ducts. A single-zone system with one indoor head costs roughly $4,000–$6,500 installed in Ottawa, a two-zone system $6,500–$10,000, and a three- or four-zone system $9,000–$16,000. Most units sold here today are cold-climate heat pumps, meaning they cool in summer and heat efficiently down to roughly −25°C, w...
Two Ottawa homes on the same street can get quotes $3,000 apart, and the difference is almost always in the details. Electrical work is the biggest swing: if your panel is full or you're still on 100 amp service, adding a dedicated 240V circuit for the condenser can mean a subpanel or a service upgrade, adding $800–$3,500. Ductwork condition matters too — undersized or leaky returns in older homes may need modification to move the airflow a new unit requires, typically $500–$2,000. Other cost dr...
Canada is phasing down high-GWP refrigerants, and 2026 equipment increasingly ships with R-454B. New refrigerants aren't cross-compatible with old linesets in every case, so ask whether your quote includes a lineset flush or replacement.
Air conditioner installation in Ottawa involves two separate approvals that homeowners often overlook. First, any new or altered electrical circuit — including the dedicated condenser circuit and disconnect — requires a notification and inspection through the Electrical Safety Authority (ESA), typically $100–$250 and pulled by your licensed electrician or HVAC contractor. Second, mechanical work that alters ductwork or adds equipment may require a City of Ottawa building permit; a straightforwar...
Cooling-only air conditioners rarely qualify for rebates, but heat pumps — which cool exactly like an AC in summer — often do, which changes the math significantly for Ottawa homeowners. Provincial and federal programs have offered incentives in the range of $2,500–$7,500 for qualifying cold-climate air-source heat pumps, and Enbridge Gas has run home efficiency programs that stack with them. Program names, funding, and eligibility change year to year, so confirm what's active before you sign, a...
The ranges above are planning numbers — your actual price depends on your home. Get at least three written, itemized quotes from licensed Ottawa HVAC contractors and make sure each one specifies the same things: equipment make, model, tonnage, and SEER2 rating; whether a Manual J load calculation was performed; whether the indoor coil and lineset are being replaced; the electrical scope and who pulls the ESA permit; the thermostat included; removal and refrigerant reclamation of the old unit; an...
In 2026, AC installation in Ottawa typically costs $4,500–$8,500 for a central air conditioner installed, with most homeowners paying $5,500–$6,800 for a mid-efficiency 2.5–3 ton replacement. Entry-level 13.4 SEER2 systems start near $4,000–$5,000, while high-efficiency variable-speed units run $9,000–$12,000.
Installed pricing in Ottawa runs about $4,500–$6,000 for a 2-ton unit, $5,000–$7,500 for a 2.5–3 ton unit, and $7,000–$10,500 for a 4–5 ton system. Efficiency upgrades from 13.4 SEER2 to 16–18 SEER2 add roughly $1,200–$2,500.
A single-zone ductless mini-split costs about $4,000–$6,500 installed in Ottawa, a two-zone system $6,500–$10,000, and a three- or four-zone system $9,000–$16,000. Most models sold here are cold-climate heat pumps that also heat down to about −25°C.
Any new or altered electrical circuit for the condenser requires an Electrical Safety Authority (ESA) notification and inspection, usually $100–$250. A City of Ottawa building permit may also be needed if ductwork is altered or a system is added where none existed. A like-for-like condenser swap typically doesn't require a building permit.
Electrical capacity is the biggest factor — homes on 100 amp service or with a full panel may need a subpanel or service upgrade, adding $800–$3,500. Older homes with no existing lineset, undersized ductwork, or tight condenser placement in narrow city lots also cost more to install.