Replacement Windows & Doors Done Right
Windows & Doors Replacement Experts in Ontario
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Click Below to Learn More
Residential Window Replacement in Southern Ontario
If your windows have started letting in cold air, fogging up between the panes, or sticking when you try to open them, you're not alone. Many Ontario homeowners face the same issues as their windows age, and replacement is often the simplest way to restore comfort and lower your energy bills.
We're based in Newmarket and see this across homes throughout the GTA. Every project starts with custom measurements of your existing openings, since no two homes are identical. Once your new units are ready, we remove the old windows, fit the replacements, and weather-seal around each frame to keep air and water out.
Newer windows also tend to run more efficiently than older units, easing the load on your heating and cooling system year-round. Homeowners replace their windows for a mix of reasons: comfort, energy savings, appearance, and simply wanting windows that open and close properly.
It May Be Time to Replace Your Windows If You Notice:
Noticeable draftsCondensation between panesDifficulty opening or closingDamaged frames or sealsRecurring cold spots around windowsExcessive exterior noise
Vinyl Replacement Windows for Ontario Home
Vinyl windows are a popular choice for Ontario homeowners who want a low-maintenance option that holds up well over time. Unlike wood frames, vinyl won't rot, warp, or need repainting, and it resists moisture better in humid summers and freezing winters alike.
Vinyl frames also provide solid insulation, helping keep conditioned air inside your home through Ontario's seasonal temperature swings. We custom-size every window to your existing openings, so you're not stuck choosing from generic, one-size-fits-all units.
We offer several vinyl window styles to fit different rooms and needs, from operable options that maximize airflow to fixed windows built for extra natural light. The infographic below shows the styles available through Window Experts, so you can compare options before choosing what's right for your home.
Casement
Awning
Single Slider
Double Slider
Single Hung
Picture/Fixed Casement
Windows and doors are all we do, and we’ve done more than 800 of them across Ontario.
What Homeowners Say About Our Window & Door Replacement
Based on 80+ Google reviews · 4.9 average
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EEdmond DagherSeptember 2026
“We recently worked with Window Experts on a large project that included 20 windows and 6 entry doors, and we were happy with the entire experience. From Igor's initial consultation to the final installation, everything was handled very professionally. Communication was clear, the team showed up as scheduled and they did a great job. The quality of the windows and doors was excellent and we could immediately see the difference they made to the house. It's not easy to find a company you can trust with such a large order, but Window Experts delivered exactly what they promised. We would definitely work with them again and recommend them to anyone looking for new windows and doors.”
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SSandee SharpeSeptember 2026
“Alan was fantastic and really knew his products with excellent advice. I gathered numerous quotes and The Window Experts were an easy choice. They installed 4 windows with full frame replacement. The installation was amazing and they even expertly juggled installation around the recent major storm. Would highly recommend!”
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SSvetlanaSeptember 2026
“I have used the Window Experts a few times over the last few years when upgrading my entry door, sliding doors, and windows. Each time I have encountered an exceptional service: fair pricing, quality windows and doors, as well as very clean and thorough work during the installation. And they always arrive on time, which is much appreciated and is not always the case with some contractors. In short, happy to recommend this business to anyone.”
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VValya SergeevaAugust 2026
“Excellent service. Everything was done timely, carefully and professionally. We were very grateful for such an amazing service. Definitely recommend for all your window needs!”
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MMilani G.August 2026
“Replaced 14 windows and 2 doors. Was very happy with the team. They took the time to explain the products, find solutions that work, and worked around my schedule and the general home renovations to get the work done!”
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RRita ZakJuly 2026
“The door has been installed within few hours and looks really good. We were shown how to use build it blinds and old door and frames have been disposed.”
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JJay Y.July 2026
“Super happy with the windows installed by Canada Choice Windows and Doors. Kostas was patient and was not pushy to make a sale. Answered every question we had and gave us multiple options regarding payments. The guys who installed the windows were fast and efficient. They covered the floor with blankets where they stepped on and cleaned after themselves. Left the place cleaner than found. Great guys too, they took the time to explain how to clean and operate the windows.”
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AAlexandra BournasJune 2026
“Alan and his team were great. They were very professional and responsive while I was waiting for the order which arrived within the time promised. Alan made sure to arrange installation quickly and the installers were right on time, polite and efficient. They did a great job. I love my patio doors. Highly recommend!”
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DDavid BedardMay 2026
“Had an issue with my front door and Window Experts is the best choice anyone can make. Igor was prompt, efficient and went above and beyond to not just repair but improve our existing door. Scheduling a full update to all our windows soon!”
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VVas KolovosMay 2026
“WOW service is the only way for me to describe my experience with Window Experts! After calling several competitors, I stumbled upon this company and Alan was more than happy to help me with a unique and custom sized screen door. While others ignored my messages, or refused the business due to the unique request, Alan took my order without hesitation and with consistent friendly service at every turn. He scheduled the job quickly with minimal disruption to my home and family life and installed it quickly and beautifully! Thank you Alan to you and your team for your outstanding and exceptional service. Your next window and door project call should be to Alan at Window Experts! They will give you quality service for great pricing!!!”
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EElizabeth WhyteMay 2026
“I recently had my upstairs windows replaced by Window Experts. I am extremely happy with the results. The work was completed in one day, with a minimum of disruption and absolutely no mess left behind. I would certainly recommend Window Experts.”
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MMichael IamundiApril 2026
“We recently hired Igor from The Window Experts to replace our front door and we are just absolutely thrilled! Igor was great at taking the time to understand what me and my wife were looking for in our home. From the quality of the door to the installation process, everything was exceptional! The installers were clean, friendly, and respected our home. We have already recommended them to our friends and family. If you are looking for this type of service I would highly recommend calling The Window Experts for overall great and reliable service!”
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MMatthew PatrickFebruary 2026
“Professional friendly and thorough. Our new windows and door look fantastic, and the crew even came back to make sure every detail was perfect.”
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JJosh HendersonNovember 2025
“Incredible work! Igor and his team were efficient, professional, and friendly. From start to finish, the entire experience was excellent. Igor and Allan made the process seamless, keeping us informed every step of the way. Both installation crews for the windows and doors were well-prepared and cleaned up thoroughly with no mess left behind. I highly recommend this exemplary company. A special shoutout to LOM Enterprises for the masonry work converting our single door into a sliding patio door given the complexity with a century home. Competitive pricing and worth every dollar. A big thank you to The Window Experts for a job exceptionally well done! These guys are as genuine as they come.”
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Window Replacement vs New Window Installation
Homeowners often use window replacement and window installation interchangeably, even though the two projects can differ in scope. Window replacement usually means swapping an existing window for a new one in an opening that's already the right size, so the project focuses on removal, fitting, and sealing.
New window installation can involve more, especially when you need to create, enlarge, or structurally modify an opening to fit the selected window. That kind of project adds steps like framing and exterior finishing beyond what a straightforward replacement requires. Not sure which one your project needs? Our installation page walks through the full process in more detail.
What Affects Window Replacement Cost?
There's no single price for window replacement, since the right scope depends on your home and your project.
Factors that can affect your quote include:
- Number of windows
- Window size and style
- Double- or triple-glass selection
- Selected finishes and trim
- Condition of the existing frames and openings
- Installation method
- Access to the windows
A straightforward replacement using an existing opening typically involves less work than a large window, an unusual configuration, or an opening that needs extra preparation. We provide pricing after measuring your openings and reviewing your selections, so your quote reflects your actual project rather than a generic estimate.
Your Local GTA Window & Door Team
We’re a locally owned team based in Newmarket, serving Toronto and the surrounding GTA since 2017. Every install is handled by people from your community, not a national crew passing through the area.
You can count on Window Experts to be there when you need us!
Newmarket
Why Choose Window Experts for Window Replacement?
Choosing a window company affects your home's comfort and value well beyond installation day. It also means trusting someone with the details, from accurate measurements to the finished result. Here's what homeowners can expect from Window Experts.
Budget-Friendly Financing
25-Year Warranty
Made in Canada Quality
Options for Every Aesthetic
We Install Windows & Doors in Ontario Near You!
When the same team handles your window and door replacement from consultation to final inspection, accountability never gets passed off. You have one point of contact who knows your project, one set of standards across every measurement and install, and one warranty covering it all. No subcontractor handoffs, or finger-pointing, just the consistent Window Expert quality you can count on!
Blog Roll
Window Replacement Cost in Ontario: 2026 Pricing Guide
Energy-Efficient Windows in Canada: What Actually Makes a Window Energy Efficient?
Why Basement Windows Leak After Heavy Rain (And When The Foundation Is The Real Problem)
Window & Door FAQs
We offer free, no-obligation in-home estimates across the GTA. Pricing varies based on the size and number of openings, the window or door style you choose, glass package, and any structural work involved.
After we measure and discuss your goals, you receive a detailed written quote plus zero-interest financing options if needed.
Yes, our team operates as a fully insured, professional installation company, and every project is completed in compliance with the Ontario Building Code. All installations are handled by our own certified technicians (not subcontractors), with proper documentation and coverage in place to protect your home throughout the process.
Our installers are certified window and door specialists with years of hands-on field experience across all major Canadian product lines. Every team member is trained in proper measurement, structural assessment, and the manufacturer-specified installation methods that keep warranties valid, and we never subcontract the work to outside crews.
Every window and door we install is backed by our lifetime warranty covering the product, the installation, and ongoing service with no fine print or exceptions. If something fails due to materials or workmanship, we fix it. We also stand behind our ENERGY STAR®-rated units with a written energy savings guarantee of up to 60%.
