Windows and Doors Oshawa

FREE In-Home Estimate (905) 326-3444

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Windows and door are a big investment that should not only be well thought through, but should only be done by certified experts. Whether you’re looking for replacement or installation, major factors such as energy efficiency, durability, insulation properties and other important features should be taken into account. NorthShield Windows & Doors has been servicing Oshawa and its surrounding areas for over 20 years – so we have the expertise to help you find the right option for your home.

If you’re looking for high-quality windows & doors, call our professional window replacement experts at (905) 326-3444 for a free, no-obligation, in-home estimate today!

Jun 2026

Limited-Time Offer: Get Up to $300 Off Each Window and Up to $500 Off Each Door

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ENERGY EFFICIENCY
NorthShield’s windows & doors offer the latest heat and sound insulation properties that will help you keep your home nice and cozy no matter the season.
OUR WARRANTIES
NorthShield has your back. Our products and services are backed by warranties, ensuring that you enjoy your new windows for a long time. Leave the windows for your home in the hands of pros.

CERTIFIED PROS
With over 20 years of experience providing window replacement services for homeowners, NorthShield has become one of the highest rated companies in the area.
FREE ESTIMATE
Not sure whether you should get your windows replaced? Worried about the overall costs? NorthShield’s professionals will come straight to your house and give you an estimate for free!

OUR WORK

PROJECTS WE'VE WORKED ON

TURNING HOUSES INTO HOMES

FULL SERVICE WINDOWS REPLACEMENT IN OSHAWA

Without the right windows, it can be very difficult to keep your home nice and cozy, especially during those harsh Canadian winters. With our premium windows and doors, you’ll be able to enjoy a cozy home throughout the year without overspending on monthly bills.

As part of our commitment to ensure the ultimate comfort for your home, we offer triple pane windows with argon gas insulated chambers for even better insulation.

For all your window replacement needs, call our team in Greater Toronto Area.

VINYL WINDOW STYLES FOR EVERY HOME

AN INVENTORY OF MODERN WINDOWS AND DOORS

Every home is unique. We know that. That’s why we take the time to communicate with each client to ensure that their vision is met and that they get the results they wanted. With numerous customization options available, we can help you find the ideal window shapes for your unique home. We value our clients, and we dedicate the time and effort to truly understand their needs.

From classic to customized, from double and triple pane windows to the latest easy operation features, we provide you with an unlimited number of options. You just need to find the right one for you and your home.

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Your Questions, Answered

Do you offer free window quotes in Oshawa?

Yes, absolutely. We provide 100% free, no-obligation in-home estimates to all homeowners across Oshawa and the surrounding Durham Region. A NorthShield specialist will come directly to your home, assess your current window frames, take precise measurements, walk you through our styles, and leave you with a written price quote that we guarantee for a full year.

How long does the actual installation take?

For a standard Oshawa home (replacing about 8 to 12 windows), our expert installation crew will complete the entire project in just one business day. If you have a significantly larger property, or if we are physically altering your walls, such as turning a standard window opening into a massive, light-filled picture window, it may take two business days. Your home will always be fully closed up, safe, and weatherproofed before we leave at the end of the day.

Do I have to replace every single window at the same time?

No, you don't. While replacing the entire house at once gives you the fastest, most noticeable drop in your monthly energy bills, we regularly help Oshawa homeowners break their projects into affordable phases. For instance, many clients choose to replace their leaky, drafty basement or north-facing windows first, and then have us return the following year to complete the rest of the property.

What window rebates can Oshawa homeowners claim?

Oshawa residents can take direct advantage of Ontario’s active Home Renovation Savings Program (HRSP). You can receive a $100 rebate per rough opening (each window or exterior door frame) that you replace. The Criteria: You must replace at least three openings, and the new windows must be strictly ENERGY STAR® certified. Pro-Tip: If you bundle your window upgrade with other home improvements like attic insulation or air sealing under the program's bundled path, your total provincial rebate can reach up to $12,000.

Is there a low-interest financing program available in Oshawa for window upgrades?

Yes! Through the Durham Greener Homes Loan program, Oshawa homeowners can access incredibly favorable financing for energy-efficient retrofits.

The Terms: You can access a fixed 2% low-interest loan of up to $125,000 with a generous 15-year repayment term.

How it works: This is a Local Improvement Charge (LIC) loan, meaning the financing is attached to the property itself, not you personally, and it is paid back seamlessly through your regular Durham Region property tax bill. It is an amazing way to fund a full-home window replacement with very little upfront cost.

Do I need a municipal building permit from the City of Oshawa to change my windows?

If we are replacing your windows using the exact same dimensions within the existing structural openings, no building permit is required by the City of Oshawa. However, if you are looking to structurally alter your home, such as widening a frame to install a panoramic picture window or cutting concrete to add a legal egress window to a basement bedroom, a permit is required, and our team will help handle the specifications.

How should I prepare my home for the NorthShield installation crew?

To help our team ensure the smoothest, fastest, and safest possible installation day, we ask that you complete these minor steps before we arrive:

Clear the pathway: Move furniture, plants, and fragile decorations about 3 to 4 feet away from the windows inside and out.

Strip window coverings: Remove all curtains, blinds, shades, and mounting brackets.

Home security: Disconnect or bypass any alarm sensors attached directly to your current window frames.

Pet care: Keep your pets in a quiet, closed room safely away from the active work zones while our crew is moving materials.

What is "Low-E" glass and why do I need it?

Low-E (Low-Emissivity) is an invisible, microscopic layer of metallic oxide applied directly to the glass panes. In the winter, it acts like a heat mirror, reflecting your furnace's warmth back into your living spaces. In the summer, it reflects the sun's harsh, burning infrared rays away from your house. This prevents your furniture and flooring from fading while shaving up to 25% off your monthly utility bills. All NorthShield windows come standard with Low-E technology.

Warranty

Window frames
25 years warranty.

Window hardware
25 years warranty.

Window glass
25 years warranty.

Window installation
15 years warranty.

Window colour
10 years warranty.

Entry doors frame
10 years warranty.

Window Collection

Casement Windows

Easy to use and the most popular window style in Canada.

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Picture Windows

Low profile, fixed windows that frame the view perfectly.

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Fixed Windows

High profile, fixed windows that compliment any configuration.

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Tilt and Turn Windows

Popular in Europe, turn the handle to open multiple ways.

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Awning Windows

Opening outwards, these the most popular style for bathrooms.

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Single-Hung Windows

Open just the bottom sash for enhanced security.

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Double-Hung Windows

Open both top and bottom sashes for excellent ventilation.

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Single-Slider Windows

Slide the sash to open just one side for enhanced security.

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Double-Slider Windows

Slide both sashes independently to open both sides.

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Bow and Bay Windows

Stylish and elegant, providing panoramic views.

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Custom-Shaped Windows

Choose any shape window and we will manufacture it!

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Hopper Windows

Opening inwards, these are the most popular style for basements.

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Lift-Out Slider Windows

Choose to slide one sash or open inwards like a casement.

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Door Collection

Reviews From Our Oshawa Customers

“The team did an excellent job installing our new doors and windows. The quality is fantastic, and the customer service was top-notch from start to finish. Highly recommend!”

Pretzelme

“Great experience dealing with this company. Alex was a pleasure to deal with. Very knowledgeable and professional. The installation team was also great. We love our new door and windows. We strongly recommend this company for your next project.”

Farid

“The team did a fantastic job with our new windows and doors. They were prompt, professional, and the finished product looks incredible. We’re so happy with the results!”

Marthela