How much does window replacement cost in Quebec in 2026?
In Quebec, replacing a window usually costs $900 to $2,600 installed, before taxes. For a house with 10 windows, the budget often falls between $9,000 and $24,000 depending on the model. Frame material, opening style and installation quality affect the price as much as winter comfort.
Quebec price ranges in 2026
Quebec market estimates, updated October 2026, before taxes (GST and QST extra). These are not guaranteed prices: costs vary by region, building and materials, and only a written quote based on your project gives an actual price.
| Product | Unit price (installed) | Typical budget |
|---|---|---|
| PVC sliding or hung window | $900 – $1,600 | 10 windows: $9,000 – $16,000 |
| PVC casement window | $1,200 – $2,200 | 10 windows: $12,000 – $22,000 |
| Hybrid PVC and aluminum window | $1,500 – $2,600 | 10 windows: $15,000 – $24,000 |
| Sealed glass unit only | $250 – $600 | Depends on the number of units |
| Patio door | $2,500 – $6,000 | One door |
What drives the price
- Frame material: PVC is the most affordable, hybrid and aluminum cost more.
- Opening style: casement, awning, sliding or fixed.
- Double or triple glazing and ENERGY STAR certification for the climate zone.
- Installation method: inside the old frame, or from the outside with siding and trim rework.
- Custom sizes, special shapes and access to upper-floor windows.
Mistakes to avoid
- Replacing every window when only a few fogged glass units need changing.
- Overlooking insulation and sealing around the frame: a good window installed poorly still leaks air.
- Forgetting that bedrooms must keep a window large enough for emergency exit.
- Comparing quotes that do not specify the same glazing or installation method.
How to get reliable quotes
- Have the contractor measure every opening instead of providing your own measurements.
- Ask for the spec sheet: glazing, gas fill, certification and manufacturer warranty.
- Have the interior finish (trim, drywall) and exterior finish (flashing, sealant) spelled out.
- Check that the contractor holds a valid RBQ licence for this type of work in the Régie du bâtiment du Québec registry.
- Insist on a detailed written quote and compare at least three quotes line by line, not just the total.
Estimate your budget, then get quotes
Use the PRONEK estimator to get a range for your project, then post your project for free: it is sent to verified RBQ contractors, and no payment is requested before signing.
Frequently asked questions
How much does an installed window cost in Quebec?
A standard PVC window often costs $900 to $2,200 installed, before taxes. A hybrid window is more in the $1,500 to $2,600 range.
Are there grants for windows?
Some energy-efficiency programs support door and window replacement, but their conditions change often. Check our grants guide before signing.
When should windows be replaced?
Condensation between panes, drafts, rotten frames or broken hardware are signs that replacement is worth considering.
Can windows be replaced in winter?
Yes, contractors often replace one window at a time to limit heat loss, but warmer months make exterior finishing easier.