EXCLUSIVE OFFER: All Windows & Doors 30% OFF
Finally... Windows That Are Affordable To Everyone. Installed In Just 1 Day And Built To Last with 30% OFF!
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100%
Fade & Crack-Free
1-Day
Installation
1-Year
Price Guarantee
0
Sub-Contractors
Here’s How Much It Should Cost To Install A New Windows
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Available Across the GTA Area
As a leading name in shower remodeling in the GTA area, we’ve completed over 20,000 projects with unmatched expertise. We make luxury high-quality windows affordable, durable, and built to last a lifetime.
4.8
5.0
4.8
A+
Company reviews across all branches as of 01/15/2026.
Custom-Built To Any Size, Space & Need
Here’s How Much It Should Cost To Install A New Windows
How old are your current windows and doors?
See What Our Customers Say
VERIFIED Purchase
Emily Thompson
Ontario Windows did a fantastic job replacing our windows! The team was professional, on time, and paid close attention to every detail. The installation was smooth, and the results look amazing. Our home feels brighter and more comfortable. Highly recommend!
VERIFIED Purchase
Jessica Martin
I’m very happy with the work done by Ontario Windows. You can really see their experience and quality in the final result. The installers were respectful, efficient, and professional throughout the entire process. Our new windows look impressive — I definitely recommend this company.
VERIFIED Purchase
Michael Anderson
I’m absolutely thrilled with the window installation by Ontario Windows. From the very beginning, they were professional, punctual, and attentive. They helped us choose the right windows, stayed within budget, and completed everything on time. The final result exceeded our expectations.
VERIFIED Purchase
Ryan Campbell
Excellent window installation service! The team was reliable, professional, and very easy to communicate with. Everything was completed on schedule with great attention to detail, and the windows look even better than we expected. Highly recommended for anyone looking for quality window installation.
VERIFIED Purchase
Matthew Johnson
Amazing experience from start to finish! The crew handled everything with great care and kept us informed at every step. The new windows completely transformed our home — it feels warmer, quieter, and brand new. Very happy with the service and would definitely choose Ontario Windows again.
VERIFIED Purchase
Lauren Wilson
Ontario Windows truly lived up to the name! The team was friendly, fast, and did outstanding work. The installation was clean and efficient, and our new windows look fantastic. Couldn’t be happier — highly recommend!
1-Day installation process
01
Old Window Removal
We carefully remove your old windows and dispose of them safely, protecting your walls, trim, and flooring throughout the process.
02
Opening Prep & Insulation
We prepare the window opening, inspect the frame, and add proper insulation and sealing to prevent drafts, moisture, and heat loss.
03
New Window Installation
Your new energy-efficient windows are installed, leveled, and secured for long-term performance and smooth operation.
04
Finishing & Quality Check
We complete interior and exterior finishing, seal everything properly, and test each window to ensure it looks great and performs perfectly.
Here’s How Much It Should Cost To Install A New Windows
How old are your current windows and doors?