Replacement Windows
Energy-efficient, custom-measured windows built to withstand harsh GTA winters.
Proudly Canadian, Toronto-Owned Since 1989.
Proudly Canadian, Toronto-Owned Since 1989.
LOCALLY MADE SINCE 1989
Upgrade your home with Delco's high performance windows and doors
Proven. Trusted. Award-Winning.
TORONTO’S MOST TRUSTED WINDOWS AND DOORS COMPANY
Upgrade your home with Delco’s high-performance windows and doors for comfort, energy efficiency, built for Canadian weather.
Energy-efficient, custom-measured windows built to withstand harsh GTA winters.
Secure, durable entry doors that enhance curb appeal, improve insulation, and protect your home year-round.
Smooth-sliding and elegant patio door solutions that maximize natural light while delivering excellent thermal performance.
Since 1989 our reputation exceeds expectations to go along with our positive customer reviews
Our teams of qualified and insured installers will transform your vision to reality
Dealing with a manufacturer direct will benefit our customers with lower costs
As a leader in the industry we provide the most comprehensive transferrable warranty in the business
Introducing the high performance SLIMLINE89 window that will improve efficiency by at least 24%
Excellent deferral options to go along with low monthly payment programs. Replace today pay later
See how Delco's professional window & door installation transforms homes across the GTA
See more of our work
Tell us about your project and our team will contact you to schedule your free in-home consultation.
Windows that never compromise
Delco proudly introduces Sierra Pacific, the world’s largest wood window manufacturer, offering premium aluminum-clad and all-wood windows, curtain walls, and extensive door options — designed to meet the needs of homeowners, architects, and builders.
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AS SEEN ON AND TRUSTED BY HOMEOWNERS ACROSS ONTARIO
What makes our product award-worthy? It’s our relentless focus on delivering the best. From pioneering advanced insulation technologies that significantly reduce energy cost to crafting designs that seamlessly blend with Toronto’s diverse architectural styles.
More Glass, Less Frame, Bigger Energy Saving
Reduce your window’s exposure to the elements, while increasing energy efficiency. Delco’s Slimline89 delivers the slimmest window yet, while lowering your energy bills through advanced window frames. . . guaranteed!
Now Available In Triple-Pane!
Amazing service and quality products. Installation was on time and on budget. Our windows look awesome. Edan gave us his full attention from the first call and every step of the way after. Highly recommend.
Read more New windows and door for basement and new metal/glass back door for main house - even through my indecisiveness and the covid-19 challenges Ayal and his installers were patient with me and I am very happy with the look and quality of the install.
Read more It was a pleasure dealing with Jack and all Delco's stuff. The windows arrived on the date for which were promised. The quality of the service, product and workmanship were excellent. I would gladly recommend Delco to anyone need Windows and Doors
Read more We're so happy with our new front door. Very high quality finish, beautiful window. Installation was impeccable and done very quickly. Hinge and 3-point lock mechanism fit perfectly and feel very solid. Very attentive customer service. Door really ups our curb appeal!
Read moreWe supply and install windows and doors in the greater Toronto area. Let’s have a smooth and hassle-free windows and door replacement experience with our four step process.
Located in Toronto, Delco listens to your needs and recommends the perfect products, ensuring the best results for your home.
In Toronto, we measure and manufacture doors and windows with precision, using premium materials for lasting quality.
Our expert installers ensure windows and doors fit perfectly, perform optimally, and are installed efficiently, professionally, leaving your home spotless.
Our commitment continues after installation, providing maintenance advice, adjustments, and warranty support — our dedicated team is always ready to assist.
Replace your windows and doors with factory-laminated security glass and a built-in multi-point locking system, engineered to stop forced entry before it starts, while keeping your home quieter.
Three layers of 3mm glass bonded with a PVB interlayer. Resists shattering, holds broken glass in place.
Closing your door automatically engages three locking points simultaneously.
Three glass layers with bonded vinyl laminated interlayer
TIPS AND ADVICE
Delco Windows & Doors Get expert advice, accurate pricing, and professional installation from one of the GTA's most trusted window and door companies.
PROUDLY SERVING THE TORONTO AND GREATER TORONTO AREA
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