How much does a new AC unit cost in Durham Region?
How much does a new AC unit cost in Durham Region?
Ben Amina
Aire One East Heating & Cooling, Whitby, Ontario
The new AC unit cost in Durham Region typically falls between $3,500 and $8,500 CAD installed for central air conditioning, with the final price set by the size and efficiency of the unit and the condition of your existing ductwork and electrical. This guide breaks the cost down by SEER2 efficiency tier, explains what drives the price, and compares a straight air conditioner against a heat pump that also heats. Prices are quote based, so treat these as honest Durham ranges. If your current unit has failed, see our guide on whether to repair the air conditioner first.
The short answer: a new central air conditioner in Durham Region usually costs between $3,500 and $8,500 CAD installed. An entry-level unit sits near the bottom, a mid-efficiency SEER2 unit in the middle, and a high-efficiency model at the top. A ductless system for a home without ducts runs a similar range per zone. Correct sizing matters more than brand, since an oversized unit cools unevenly and runs up humidity.
Aire One East is a Carrier Factory Authorized dealer serving Durham Region since 1991, with licensed technicians, Licence #1219734, a 4.8 star rating across 364 Google reviews, and financing available. For a written quote, call 905-576-7600 or request one online.
Cost by efficiency tier
The main drivers of the price are the size, measured in tons, and the efficiency, measured in SEER2. Here is how the options compare in Durham Region, verified July 2026.
| System | Installed range (CAD) | Best for |
|---|---|---|
| Entry central AC (13 to 14 SEER2) | $3,500 to $5,500 CAD | Budget like-for-like replacement |
| Mid-efficiency (15 to 16 SEER2) | $4,500 to $6,500 CAD | Most Durham homes |
| High-efficiency (17+ SEER2) | $6,000 to $8,500 CAD | Lower bills, quieter, long-term stay |
| Ductless single zone | $3,500 to $7,000 CAD | Homes without ductwork, one area |
Typical Durham ranges in Canadian dollars (CAD), verified July 2026, subject to change. Exact pricing requires an in-home assessment. Financing is available.
What drives the price
Two Durham homes can get different quotes for good reasons, and a higher quote often reflects real work rather than a markup. The main factors are these.
- Size in tons, set by a proper cooling load calculation for your home, not by the old unit. Oversizing is a common, costly mistake.
- SEER2 efficiency, the biggest lever on both price and running cost.
- Ductwork condition, since older Durham homes may need duct repairs or modifications.
- Line set and electrical, where a new line set or a panel or breaker change adds cost.
- Removal and disposal of the old unit and any old refrigerant, plus a permit where required.
AC, heat pump, or ductless
Before buying a straight air conditioner, it is worth asking whether a heat pump makes more sense, because a heat pump cools in summer exactly like an AC and also heats in the shoulder seasons and winter, and it is where most 2026 rebates apply. For a home without ductwork, a ductless system cools and heats specific areas. Being fair, a straight central AC is still the right, lower-cost choice for many homes that already have a good furnace, so this is a comparison worth having rather than an automatic upsell. Our heat pump installation guide covers that option.
What a proper quote includes
An honest all-in quote should cover the equipment, the installation labour, the line set and any electrical work, removal and disposal of the old unit, a permit where required, and a written labour warranty on top of the manufacturer warranty. A quote much lower than the others usually leaves one of these out, so ask what is included before you compare on price alone. A proper cooling load calculation should also be part of the process, not an afterthought.
Rebates and financing in 2026
Rebates can lower the net cost, but straight air conditioners generally do not qualify for the current programs. As of July 2026, Ontario incentives favour heat pumps through the Home Renovation Savings Program from Enbridge Gas and Save on Energy, so if a rebate matters to you, a heat pump that also cools is worth pricing against a straight AC. The federal Canada Greener Homes Grant closed to new applicants in February 2024. Financing spreads the cost over monthly payments where paying upfront is not practical, which is common when an air conditioner fails in a heat wave.
[VERIFY REBATE: confirm current Home Renovation Savings measures and amounts at homerenovationsavings.ca on the day of publish. Do not publish a figure that has not been checked.]
We size the system with a proper load calculation, quote it all-in and in writing, and compare AC against a heat pump so you can choose. No surprises on install day.
Frequently asked questions
How much does a new AC unit cost in Durham Region?
A new central air conditioner in Durham Region typically costs $3,500 to $8,500 CAD installed. An entry-level unit is near the bottom, a mid-efficiency SEER2 model in the middle, and a high-efficiency unit at the top. A ductless single zone runs a similar range. Ductwork, line set, and electrical work can move the final price.
What size air conditioner do I need?
The right size comes from a cooling load calculation for your specific home, not from matching the old unit or a rule of thumb. An oversized air conditioner short cycles, cools unevenly, and leaves the home humid, while an undersized one runs constantly. A technician sizes it correctly during the quote.
Is a high-efficiency air conditioner worth the extra cost?
For homeowners staying long term, usually yes, since a higher SEER2 unit uses less power over many Durham summers and runs more quietly. If you are moving in a year or two, a mid-efficiency unit often makes more sense. Ask for the payback estimate for your home rather than a generic promise.
Should I buy a heat pump instead of an air conditioner?
It is worth comparing, because a heat pump cools like an AC and also heats, and it is where most 2026 Ontario rebates apply. For a home with a good furnace and a tight budget, a straight AC can still be the better value. Price both and decide on the numbers for your home.
Can I finance a new air conditioner?
Yes. Aire One East offers financing that spreads the cost over monthly payments, which helps when an air conditioner fails in a heat wave and an upfront payment is not practical. Ask about current terms when you request a quote.
The bottom line for Durham homeowners
A new AC unit in Durham Region runs $3,500 to $8,500 CAD installed, with size and SEER2 efficiency setting the number, and ductwork and electrical work moving it. Compare all-in written quotes, confirm the installer is licensed, and price a heat pump alongside the AC. When you are ready, call Aire One East at 905-576-7600 or book a free in-home quote.
Related reading
- AC repair in Oshawa
- Heat pump installation in Pickering
- New furnace cost in Oshawa
- How to choose the best HVAC company in Durham Region
Sources and references
- ENERGY STAR Canada, Natural Resources Canada
- Electrical Safety Authority (ESA), Ontario
- Region of Durham, local services
Pricing and program details verified July 2026 and subject to change. Confirm rebate amounts before starting a project.
