High Quality, Energy Efficient Replacement Windows

We match all written estimates and give up to 10% off lowest quoted price

Replacement Windows and Doors GTA

Our windows, entry doors and patio doors are manufactured in Canada using state of the art process, ensuring each door and window meets or exceeds Ontario building code.

Reliable & Experienced Windows and Doors Replacement Contractors in Greater Toronto Area

We have installed hundreds of windows and doors over the last few years, with aim to provide greatest customer experience. Our clients’ referrals and repeat business are the most important accolade for us that we always strive to earn.

Whether you want new windows for your Oshawa home or want replacement windows in Hamilton, look no further than On Star Windows and Doors. We have a team of skilled professionals for installing replacement windows in Newmarket and all over GTA. Our main aim is to provide the top-quality window replacement services for customers in Toronto, Ajax, Pickering, Waterloo, Cambridge, Kitchener, and Brantford. Our doors and windows are known as the best on the market possessing benefits such as splendid appearance, energy saving, and security.

We install products that are laboratory tested and certified according to the Canadian Standards. Also, when you choose us for window replacement in Pickering, you get the best windows for the best price. We offer a variety of styles and sizes to suit all of your needs, including awning, casement, sliding, bay, and bow, single hung, double hung, and more to make your home look incredible, as well as more energy efficient.

We also offer the best value replacement windows in Cambridge and our window installation services are most economical in Ajax and Waterloo. Whether you need to replace a single window or you want to update your home with more energy efficient and beautiful windows and doors, we have everything you need. We offer a huge line of vinyl replacement windows and doors in Brantford that can also be custom designed for your home.

another window replacement project by ON Star Windows & Doors in suburban Ontario

  • Free On-Site Estimate

  • Professional Installation

  • Warranty & Repairs

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Book a Free In Home Estimate or call us at 1 (800) 383-6041

Recent Blog Posts

The Benefits of Installing Vinyl Windows

Are you confused about whether to install wooden or vinyl windows in your home? If you’re unable to decide whether vinyl windows are a good option or not, this post is ...

June 21st, 2019

The Top 3 Things to Consider Before Buying a Patio Door

It’s already summer- the perfect time to renovate or remodel your home. It’s that time of the year when homeowners undertake bigger projects such as a kitchen remodel...

June 21st, 2019

The Difference between a Bay and Bow Window

Can you tell the difference between a bay and bow window? When it comes to window replacement, homeowners often get confused between Bay and Bow Windows. This happens bec...

June 21st, 2019

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We’ll make your window and door replacement experience simple and offer you the best value. Schedule your free, no-obligation in-home consultation today!

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