Window Replacement in Ontario: Cost, Rebate & How to Save (2026)
Replacing windows is one of the priciest home upgrades — and one of the most over-quoted. Here's what new windows actually cost in Ontario, how the provincial rebate cuts the price, and the two-minute calculator to see your own number before any salesperson does.
Window & Door Cost Calculator
What new windows cost in Ontario — after the rebate
Cost figures are Ontario market estimates (editable above), not a quote — actual pricing depends on size, frame material, and glazing. The $100/opening rebate is the HRS program figure. For an exact price, get quotes from installers.
How the window rebate works →The two numbers that matter
Window decisions come down to two figures people usually conflate: cost (what you pay the installer) and rebate (what the program gives back). In Ontario, replacement windows run roughly $800–$1500 per opening installed, and the Home Renovation Savings program pays $100 per opening back. The rebate is real but modest — the calculator nets it out so you see the true after-rebate price.
What drives the cost
Three things move the per-opening price more than anything else: size (a small bathroom window vs a large picture window), frame material (vinyl is most affordable; fibreglass and wood cost more), and glazing (double vs triple pane). That's why a single "average" price is misleading — adjust the per-opening figure in the calculator to match the quotes you're actually getting.
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How to actually save
The rebate alone won't make or break the project. The real levers: bundle windows with other eligible upgrades to lift your total rebate (the program rewards whole-home work — see rebate stacking), get three quotes because per-opening prices vary widely, and make sure every unit is ENERGY STAR® certified or it won't qualify at all.
Windows are part of Ontario's broader Home Renovation Savings rebates — the same program behind heat pumps, solar, and insulation. If you're doing more than windows, claiming them together is where the money is.
Ready for quotes?
Tell us about your project and we'll connect you with a contractor for a free, no-obligation quote — and help you bundle for the biggest rebate.
Get matched with an installer →Common questions
How much do new windows cost in Ontario?
Installed replacement windows typically run about $800–$1500 per opening in Ontario, depending on size, frame material, and glazing. A typical 8–10 window home lands around $8,000–$15,000 before any rebate. The calculator on this page lets you adjust the per-opening cost to your own quotes.
Is there a rebate for replacing windows in Ontario?
Yes — the Home Renovation Savings program pays $100 per rough opening (each window or door counts as one), with no maximum on the number of openings. You need at least 3 windows or 1 door, and all units must be ENERGY STAR® certified.
Do I need an energy assessment for the window rebate?
Windows and doors sit in the program’s bundled path, so they’re typically claimed alongside at least one other eligible upgrade (such as insulation or air sealing) rather than entirely on their own. A participating contractor can confirm how your specific project qualifies.
Does the window rebate make new windows worth it?
At $100/opening the rebate is a discount, not a transformation — on a 10-window project it’s about $1,000 off. The bigger savings are in energy bills and comfort, and in bundling windows with other upgrades to maximize the total rebate. Run your own numbers in the calculator above.
Independent homeowner guide; not affiliated with the Government of Ontario. Rebate figure verified against homerenovationsavings.ca. Cost figures are editable Ontario market estimates, not quotes. Verified June 2026.