The average cost to replace windows in Greater Toronto Area homes ranges from $600 to $1,500 per window, including professional installation. Standard vinyl windows cost less, while bay, bow, and triple-pane energy-efficient windows can cost $2,000–$5,000 per unit, depending on size, materials, and installation complexity.

In this 2026 guide, I’ll walk you through how much it costs to replace windows in GTA homes, what impacts the price, and how different window styles stack up for performance and value.

What is window replacement?

Window replacement is the process of removing old or damaged windows and installing new energy-efficient units. In GTA homes, replacement windows are commonly made from vinyl, fiberglass, or aluminium frames with double or triple-pane insulated glass.

How Much Does It Cost to Replace Windows in GTA?

Most GTA homeowners can expect to pay between $550 and $1,100 per window installed in 2026. That range depends on window type, size, frame material, glazing, and labour.

Window Type Estimated Replacement Cost (Installed)
Casement $600 – $1,000
Awning $550 – $950
Double-Hung $600 – $1,050
Single-Hung $550 – $950
Single/Double Slider $575 – $975
Bay or Bow $2,500 – $6,500
Picture $500 – $900
Basement/Egress $700 – $1,500

How Much to replace the full Windows in GTA?

If you’re planning a full-home window replacement—around 26 windows in a typical home—the total investment usually ranges between $13,000 and $28,000. The final price depends on factors such as the window style, frame material, glass technology, and energy-efficiency upgrades, such as double- or triple-pane insulated glass.

In most professional window replacement projects, this estimated cost generally includes:

  • Supply and professional installation of the new windows

  • Removal and responsible disposal of old windows

  • Exterior and interior trim finishing

  • Air-sealing with caulking and insulation to improve energy efficiency

Homeowners may also qualify for energy-efficiency incentives, such as programs offered by SmartTech, which can help reduce the overall cost of upgrading to ENERGY STAR®–rated replacement windows.

What Impacts the Cost of Window Replacement?

Here are the biggest pricing factors for GTA homeowners:

1. Type and Style of Window

Replacing a large bay or bow window costs much more than a simple casement or awning window.

2. Glazing and Energy Efficiency

  • Double-pane windows are standard, but triple-pane (great for cold GTA winters) can cost $150–$300 more per unit.

  • Add Low-E glass and argon gas fills for extra insulation and long-term savings.

3. Installation Type

  • Full-frame installation: Includes jambs, trim, and insulation. Costs more but addresses rot and air leaks.

  • Retrofit installation: Fits new windows into existing frames. Lower cost, faster install.

4. Frame Material

Vinyl is most popular in GTA—affordable, durable, and weather-resistant. Wood or fiberglass frames cost more but offer specific aesthetic or thermal benefits.

What Are the Different Styles of Windows?

Let’s go through what the different window styles are, and why they matter when budgeting for replacement.

Window Style How It Opens Best For
Casement Side-hinged, opens outward Bedrooms, living rooms
Awning Top-hinged, opens outward Bathrooms, basements
Double-Hung Two sashes slide vertically Bedrooms, traditional homes
Slider Sash slides horizontally Basements, kitchens
Picture Fixed, non-opening Living rooms, scenic views
Bay/Bow Multi-panel projection Dining rooms, front-facing rooms
Egress Code-required emergency exits Basements, bedrooms (legal)

🔗 Learn more about casement windows
🔗 Curious about awning windows?

What Is a Casement Style Window?

A casement window is hinged on the side and opens outward with a crank. It provides excellent airflow, a tight energy-efficient seal, and a clear view, making it one of the most popular window styles in the GTA.

What Is an Awning Style Window?

An awning window opens from the bottom and is hinged at the top. It’s great for privacy, small spaces, and keeping rain out while the window are open. Perfect for basements and bathrooms.

Chart listing key replacement window features and benefits, including Low-E coated glass, argon-filled panes, welded vinyl frames, Energy Star certification, tilt-in cleaning, and weatherstripping for improved energy efficiency and performance.

Key Features to Look For in Replacement Windows

Modern replacement windows in GTA should include:

  • Low-E coated glass

  • Argon-filled dual or triple panes

  • Welded vinyl frames with thermal breaks

  • Energy Star certification

  • Tilt-in cleaning functionality

  • Weatherstripping and insulation foam

All these features make a big difference during long GTA winters and help lower your energy bills.

Benefits of Window Replacement in GTA

Here’s what GTA homeowners gain by replacing old, drafty windows:

  • Lower heating and cooling bills

  • Warmer rooms in winter and cooler ones in summer

  • Quieter home with better sound insulation

  • Better curb appeal and resale value

  • Easier cleaning and maintenance

  • Qualification for rebates and incentives

Why GTA Homeowners Trust Polaris

We specialise in full-service window replacement across the GTA, including Vaughan, East St. Paul, and surrounding areas. With years of local experience, we know what works for GTA’s unique climate.

📍 Read our reviews on Google
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Final Thoughts

So, how much does it cost to replace windows in a GTA home? It depends—but the key is knowing your window styles, understanding what affects pricing, and choosing a trusted installer.

Need help figuring out the cost to replace your 25 windows—or just a few?

📞 Get your free quote here
📩 Or give us a call—we’re happy to help you every step of the way.

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