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

Factory Direct Pricing

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.

Windows Replacement Hamilton, Oshawa, Pickering, Cambridge, Newmarket, Ajax and entire GTA

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.

Windows and Doors Replacement Contractors

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 Cambridge, Oshawa, Ajax, Newmarket 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.

Premium Quality Replacement Windows Burlington

When windows age, they become drafty, hard to operate, and may even develop mold. These old or damaged windows make your home unsafe, as well as negatively impact its energy efficiency. Replacing your windows is a wise decision to save money on heating and cooling costs. At On Star Windows & Doors, we install energy-efficient windows that are available in a variety of styles and finishes. As an established window replacement company in Oshawa, we are committed to full customer satisfaction by offering high-quality windows and doors that are finely manufactured.

If you’re looking for premium-quality replacement windows in Pickering, we can help you find exactly what you’re looking for. Our wide range of windows in fantastic style and designs can astound you. Whether you need replacement windows in Scarborough or Brantford, we have the most stylish collection of replacement windows. All our products are well-insulated and provide high energy savings.

Replacement Windows Markham

On Star Windows & Doors is a well-established window replacement company in Cambridge. Our premium window products are installed by our competent and skilled experts to last for decades. We also install dual-glazed and triple-glazed windows that are available in an array of colors and grill configurations. As the top window replacement service provider in Ajax, we offer the most competitive prices. We are also the first choice of homeowners in Bowmansville for window replacement. With us, you get the most stylish, durable, and energy-efficient replacement windows at affordable prices.

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

  • Free On-Site Estimate

  • Professional Installation

  • Warranty & Repairs

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Satisfied Customers

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

Recent Blog Posts

Why Is It Wise To Replace Your Old Windows?

Wondering why homeowners invest in replacement windows? As you know, doors and windows are a vital element of homes. The windows are responsible for providing natural lig...

July 16th, 2020

6 Tips on How to Select Energy Efficient Windows

Grasp the implications of having low-quality windows Windows with a significantly lower price can actually turn out to be expensive than how they initially appear. If th...

July 16th, 2020

COVID 19 Notice

On Star Windows & Doors is committed to safety of our customers and employees and have implemented innovative policies to limit social exposure of our team with the c...

April 22nd, 2020

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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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