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Professional Window Installation Ontario

Window Installation Done Right the First Time

Measured precisely, installed by our own certified crews, and backed for 25 years. New windows that keep the heat in through January and the noise out year-round.

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Licensed and Insured

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300+ Five Star Reviews

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Window types chart: Awning, Single Slider, Casement, Double Slider, End-Vent Slider, Picture, Fixed Casement, Single Hung
Window styles: Awning, Single-Hung, Fixed Casement, Picture, Single Slider, Casement, Double Slider, End-Vent Slider

Why our Window Installation service is different

Most installation problems start before the window ever arrives. Rushed measurements, subcontracted crews, sales quotas. We fixed all three. Our own certified installers do the measuring, we order Canadian-made units built for this climate, and we stand behind the work for 25 years.

Window Installation Testimonials

Every review below comes from a real installation in the GTA or Southern Ontario. Here’s how those jobs went, in the homeowners’ own words.
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Window Installation Ontario Homeowners Trust for Excellence

Everyone in this industry promises “quality installation.” The trouble is you can’t see the difference at the quote stage. You see it three winters later, when a corner was cut on flashing or foam and there’s a draft you can’t explain.

So judge us on the things you can check. Our crews are employees, not subcontractors. We’ve installed over 10,000 windows since 2017 and collected 300+ five-star reviews along the way. And the 25-year warranty covers product, installation, and service, in writing. Call (416) 844-0099 and we’ll give you a straight quote.

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Lower Energy Bills

An airtight install is the whole game. Proper sealing and insulation around the frame keep heated air in through winter and cool air in through summer, and your bills show it.
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A Tighter, Safer Fit

Properly fitted frames, multi-point locks, and tamper-resistant hardware. A well-installed window is harder to force and still opens easily when you need it to.
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Comfort You Can Feel

No more cold spots by the window in February or rooms that bake in July. New units cut drafts, block street noise, and even out temperatures room to room.
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Built to Stay Put

Proper anchoring and sealing mean your windows handle freeze-thaw cycles and wind-driven rain for decades, and the 25-year warranty is there if anything doesn’t.

Professional Window Installation Across Ontario


One company, one crew, one number to call. From first measurement to final inspection, the people handling your project work for Window Experts, not for whoever was available that week.

That matters most after the install. If anything ever needs adjusting, you call the company that did the work, and we show up. That’s what the warranty means, for 25 years.

Yes, We Install Windows in Ontario Near You!


Window Experts is based in Newmarket, with crews working across the GTA and Southern Ontario every week. Find your community below, or call and ask. The answer is usually yes.

Window Installation FAQs

What does your window installation service include from start to finish?

Our window installation service includes professional measurement, removal of existing windows, installation of your new windows with proper sealing and insulation, cleanup, and final inspection. Each project across Ontario is customized to your specific home requirements and window types. Contact us at (416) 844-0099 for a detailed scope breakdown tailored to your needs.

What does professional window installation typically cost for homes in Ontario?

Window replacement costs vary significantly based on window type, size, number of units, and installation complexity. Window Experts provides free, no-obligation estimates with transparent written quotes and no hidden fees. Contact us at (416) 844-0099 for accurate pricing tailored to your specific Ontario home project.

Are Window Experts’ installation crews licensed and insured to perform window installation work throughout Ontario?

Yes, Window Experts is fully licensed and insured to operate throughout Ontario. Our certified installation crews meet all provincial regulations and industry standards for window installation. We maintain comprehensive insurance coverage and proper licensing to protect your home and investment during every project we complete.

How much experience does Window Experts have installing windows?

Window Experts is fully licensed, bonded, and insured across Ontario, and our certified teams have completed more than 10,000 installations since 2017. Every job carries comprehensive liability protection. If you’re comparing companies, ask for proof of all three. We’re happy to show ours.

What kind of warranty do you provide on your window installation work?

Every installation comes with our 25-year warranty covering the product, the installation, and service. If a seal fails or hardware sticks in year twelve, that’s our problem, not yours. We’ll walk you through the exact coverage in writing during your estimate.

What should I do to prepare my home and clear the work areas before your installation crew arrives to replace my windows?

Our certified installation team will provide detailed preparation instructions before your scheduled service date. We’ll guide you through clearing window areas, protecting furniture, and ensuring easy access. On installation day, we’ll walk you through our process, maintain a clean work environment, and keep you informed at each step.

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Discover the difference