Stoney Creek, ON

(905) 578-8078

Hamilton's home for
Windows and Doors.

Get your FREE in-home consultation. No obligation.

Hamilton's home for Windows and Doors

Get your FREE in-home consultation. No obligation.

Thank you!

A minimalist icon of a window with light shining through, symbolizing clarity, brightness, and energy efficiency. Ideal for representing quality replacement windows and natural light enhancement in homes.

Windows

Upgrade your home with Energy Star Most Efficient 2024 Windows.

Our Windows

A charming home entrance showcasing a modern, energy-efficient door with elegant detailing. The door enhances the home's curb appeal while providing durability, security, and style. Perfect for highlighting high-quality replacement doors.

A sleek icon of a door with light streaming through, representing modern design, durability, and energy-efficient entryways. Perfect for highlighting high-quality replacement doors.

Doors

Individual, aesthetically stunning, Replacement Doors to increase curb appeal.

Our Doors

A beautiful home in Stoney Creek featuring a stylish and energy-efficient patio door. The door’s modern design and large glass panels allow natural light to fill the space, creating a seamless connection between indoor and outdoor living. Perfect for homeowners seeking high-quality patio door upgrades in the Hamilton / Stoney Creek area.

A clean and modern icon of a patio door with light shining through, symbolizing spaciousness, energy efficiency, and seamless indoor-outdoor living. Ideal for showcasing high-quality replacement patio doors.

Patio Doors

Light the light shine in with amazing Patio Door options.

Our Patio Doors

A QSI sales representative points to a $40,000 interest-free loan graphic

Interest-Free Loans up to $40,000 Available via the Greener Homes Initiative

RevoCell^® windows are eligible for the highest financial incentives available through the Greener Homes Initiative. Homeowners planning energy-efficient retrofits can still apply for an interest-free loan of up to $40,000 from the Canada Mortgage and Housing Corporation (CMHC).

Apply now before the funds run out!

A modern brick home in Hamilton showcasing sleek, energy-efficient replacement windows. The casement windows feature clean lines and a contemporary design, providing ample natural light and enhancing the home's curb appeal. Perfect for homeowners seeking high-quality window upgrades in Hamilton.

Quality Service & Installations

Serving the Golden Horseshoe since 1976!

Serving the Golden Horseshoe for over 40 years, the secret to our success is really no secret at all – we take great pride in our quality, service, installations and our people. “Everyone at QSI is committed to the best window and door installation experience possible and this has been our guiding principle since 1976.”

You can rely on QSI to offer you the best performaning windows and doors. We are proud to offer RevoCell® windows, featuring the latest in advanced technology and qualifying for the Energy Star Most Efficient rating.

At QSI, we’re your local experts for high-end windows and doors in Hamilton and the area, including: Oakville, Burlington, Niagara, Grimsby, Halton & all surrounding municipalities. We proudly feature all our quality products on display in full scale, just how they would be installed on your own home. Our new showroom in Stoney Creek is worth the drive to Hamilton!

Book your free in-home Consultation

TEAM QSI

Together Everyone Achieves More

Founded in 1976, QSI Windows and Doors has built a trusted reputation as one of the Golden Horseshoe's premier providers of high-quality windows and doors. With nearly five decades of experience, QSI is committed to delivering exceptional products and expert installation services, ensuring your home looks beautiful and functions efficiently. Our dedicated sales and installation teams work year-round to bring you tailored solutions that meet your unique needs. At QSI, we take pride in enhancing homes across the Golden Horseshoe with craftsmanship, quality, and care.

TESTIMONIALS

Words from our Valued Clients

Just had two new windows installed. Competitive price but best part was attention to detail and cleanliness during installation. These guys are efficient and competent and the new windows look great! Well done. You’ve earned a repeat and loyal customer!

Glenn

Burlington

We are completely satisfied with the installation, quality of the product (front door) and follow up service. We had a minor flaw in the glass and the service department promptly addressed the issue and replaced the glass insert. QSI gets top marks for standing by their products.

Tom

Hamilton

We are very impressed with QSI. The installer’s are very professional, and they got the job done quickly, but were very efficient. In every way we would rate QSI excellent!

Gramigna

Smithville

The windows are wonderful, quiet, and much warmer.The men did great work, everything placed in to a tee. The windows were framed with nice solid wood,not plastic or skimpy looking wood, nicely mitered and cleaned up after the job was finished. They took all the garbage away and left nothing behind. This job was done over a year ago and we are still very happy. Thanks guys.

Brenda

Beamsville

Phenominal. The workers worked very well together. One did one thing, while the other did something else. They cleaned up everything both inside and out. The cost is a little bit higher, but it is money well spent. I would use them again in a minute.

Jim

Haldimand

We needed windows replaced in our entire house and had QSI supply and install the windows. They were very informative during the consultation and measurement appointment. When the installers arrived, they were polite and professional. They took their time in completion of the details of installation, such as the appearance of the caulking and cleaning all of the windows when they were done. They also finished the inside of the new windows for us.

Lou

Brantford