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How much does window replacement cost in Ajax, ON?

Converted from US national rangeUpdated Prices checked October 20262 sources

Window replacement costs about CA$4,830 to CA$16,640, typical CA$10,330, using the US national range converted to Canadian dollars. That is HomeAdvisor's US figure ($3,436 to $11,838) at 1.4054 CAD per USD (Bank of Canada, October 20, 2026), not a survey of Ajax prices.

Converted to Canadian dollars

Low
CA$4,830
Typical
CA$10,330
High
CA$16,640

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Window replacement cost in Ajax, ON

Each row says exactly what the figures are and where they come from.

Window replacement cost in Ajax, ON
EstimateLowTypicalHighBasisChecked
Converted to CADCA$4,830CA$10,330CA$16,640US national range × 1.4054 CAD per USD (Bank of Canada, October 20, 2026). Not a survey of Ajax pricesOctober 2026
US national range$3,436$7,348$11,838Per project (several windows): typical range of customer-reported projects (HomeAdvisor)October 2026

What drives the cost of window replacement

Dollar figures in this section are US national figures in US dollars.

  1. Number of windows

    Per-window prices drop on larger projects.

  2. Window size and type

    Picture, bay and skylight windows cost more than standard double-hung.

  3. Glass

    Double or triple panes, Low-E coatings and gas fill add cost.

  4. Frame material and brand

    Vinyl, wood, fiberglass and aluminum frames are priced differently.

  5. Replacement or new opening

    New openings need framing and siding work.

Permits and what's included in Ajax

Fees quoted here are US figures in US dollars; Canadian permit fees are set by your municipality.

Permit note

Like-for-like replacements often need no permit, but new or enlarged openings usually do. Check with your building department.

Rules are set locally; confirm with Ajax’s building department.

What’s usually included

  • New windows
  • Removal of the old windows
  • Installation, flashing and sealing

Scopes vary. Get the scope in writing on every quote.

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Top-ranked window installers in Ajax

The top 3 of 433 window installers we rank for Ajax, ON, by CR Score. Paid placement never changes rank.

  1. #1
    Alco Glass LTD
    CR Score 895.0from 38 Google reviews
  2. #2
    Sprint Auto Glass
    CR Score 884.7from 413 Google reviews
  3. #3
    OhMyGlass "Window and Door Repairs"
    CR Score 885.0from 160 Google reviews

See all ranked window installers in Ajax

Window replacement cost in Ajax: questions

How much does window replacement cost in Ajax, ON?

Window replacement costs about CA$4,830 to CA$16,640, typical CA$10,330, using the US national range converted to Canadian dollars. That is HomeAdvisor's US figure ($3,436 to $11,838) at 1.4054 CAD per USD (Bank of Canada, October 20, 2026), not a survey of Ajax prices.

Are these prices in Canadian dollars?

Yes, converted. We have no Canadian price survey for this job, so we show the US national range converted at 1.4054 CAD per USD (Bank of Canada daily rate for October 20, 2026). Local labour, material and tax differences are not reflected.

Do I need a permit for window replacement in Ajax?

Like-for-like replacements often need no permit, but new or enlarged openings usually do. Check with your building department. Rules are set locally, so confirm with Ajax’s building department.

What affects the cost of window replacement?

Number of windows: per-window prices drop on larger projects. Window size and type: picture, bay and skylight windows cost more than standard double-hung. Glass: double or triple panes, Low-E coatings and gas fill add cost. Frame material and brand: vinyl, wood, fiberglass and aluminum frames are priced differently.

How many window installers serve Ajax?

We rank 433 window installers for Ajax, ON by CR Score. Get at least three written quotes for the same scope.

What is usually included in the price?

New windows; Removal of the old windows; Installation, flashing and sealing. Always get the scope in writing on the quote.

Sources

Checked October 2026. Figures are estimates, not quotes.

  1. HomeAdvisor: Window installation cost · page updated June 17, 2026 · checked October 2026Primary source. Used for: Low, typical and high; drivers.
  2. Journal of Light Construction: 2025 Cost vs. Value Report: Window Replacement, Vinyl · page updated 2025 · checked October 2026Used for: Regional adjustment ratio.
  3. Bank of Canada: Daily exchange rates (USD/CAD) · page updated October 20, 2026Used for: Conversion rate 1.4054 CAD per USD.
These are published estimates converted at a stated exchange rate, checked October 2026. They are not quotes. Typical range shown: CA$4,830 to CA$16,640. Editorial policy

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