Official DEL Windows and Doors Dealer for homeowners, contractors, builders, and construction projects across the GTA
⚡ Send your project details today — we can quote homeowner replacements and construction window projects.
Whether you are pricing windows for a build or replacing old windows in your home, DES keeps the quote practical: exact sizes, clear scope, DEL product options, and install coordination when needed.
For construction teams that need reliable window supply and installation support across the GTA.
For GTA homeowners who want cleaner installation, better efficiency, warranty support, and a simple quote process.
DES keeps the process simple for both construction teams and homeowners: we review the scope, confirm measurements or openings, coordinate the DEL factory order, and schedule installation with one accountable GTA team.
Send plans, opening details, or tell us about your home replacement. We confirm fit, timeline, and the best next step.
For homes, we schedule measurement. For construction projects, we review rough openings, schedule details, and site requirements.
Your windows are prepared to match sizing, style, glass package, efficiency needs, and project timeline.
We coordinate delivery and installation timing, then install, seal, trim, test operation, and clean the work area.
We back the project with lifetime product warranty support and help homeowners understand rebate paperwork when applicable.
Price custom DEL windows for active or upcoming projects.
For qualifying homeowner replacements, we check current Ontario window and door rebates.
We help confirm real dimensions before the order is built.
DEL window options meet ENERGY STAR® standards for Canada, helping projects reduce heat loss and support rebate paths for qualifying home replacements.
Our local installers have 10+ years of hands-on experience and coordinate clean, accountable installation across GTA projects.
Residential projects are backed by lifetime product warranty support and clear post-install assistance.
We reduce retail markups and help confirm sizing, ordering, install timing, and rebate eligibility where applicable.
DES Windows is an official DEL Windows and Doors dealer in the GTA. We quote homeowner replacements, renovation scopes, additions, and construction projects that need custom-sized DEL windows.
By working through the factory-direct supply chain, we reduce retail middleman markups, help you access Ontario-made product quality, and keep one team accountable for sizing, ordering, installation coordination, warranty support, and homeowner rebate guidance when applicable.
Get Project Quote
Need a specific style for a build or replacement? Start with the common options below, and we will confirm the right DEL window system during the quote.
View All Window Types
At DES Windows, we proudly stand behind every window we supply and install. Our lifetime product warranty covers materials and components for qualifying residential projects.
Clear product support, reliable coordination, and long-term peace of mind for homeowners and project teams.
Awning windows are a stylish and practical window type, hinged at the top and opening outward from the bottom—much like the canopy of a tent. …
Casement windows are a timeless window solution, hinged on one side and designed to open outward using a crank or lever handle. Known for their …
Picture windows are large, fixed panes of glass that do not open, offering an unobstructed and uninterrupted view of the outdoors. As non-operable windows, they …
Transform your home with the timeless beauty and practicality of Bay windows. These stunning architectural features not only enhance curb appeal but also expand your …
All DES Windows products meet the latest NAFS-22 standards, ensuring superior durability and performance in the Canadian climate. Our windows deliver maximum energy efficiency, airtight insulation, and exceptional water resistance — tested for real Ontario weather.
All our models are also ENERGY STAR® certified, meeting the highest Canadian standards for energy savings and sustainability — lower energy bills, a warmer home in winter, and a reduced environmental footprint.
Enhanced energy efficiency
Superior air-tight performance
Maximum water resistance
Minimum Energy Rating of 34+
Lower heating & cooling costs
Reduced carbon footprint
Real public Google feedback from the DES WINDOWS business profile.
View all Google reviews“Professional, knowledgeable, and really cared about doing quality work.”
Kareen Hallak Google review · 5.0“Very good quality of product and customer service.”
Tareq Abu Samak Google review · 5.0“The whole process was simple and clear.”
Yaroslav Google review · 5.0Tell us if this is a construction project, renovation, or home replacement. We’ll review sizing, timeline, DEL window options, install needs, and homeowner rebate eligibility when applicable.
Yes. DES can quote windows for construction, renovations, additions, and multi-opening replacement scopes across the GTA. Send plans, an opening schedule, photos, or project details and we will review custom DEL window options, sizing, timing, and installation coordination.
Yes. Homeowner replacement projects include a free in-home measurement, product recommendation, installation scope, warranty support, and a current Ontario rebate eligibility check where applicable.
For qualifying homeowner replacement projects, the current Home Renovation Savings program may provide rebates for eligible window and door upgrades. ENERGY STAR® models and program conditions apply. For the assessment-required path, the initial home energy assessment must happen before work starts, and bundled upgrades may be required.
Home replacement installations are often completed in a single day once product is ready. Construction and renovation timelines depend on opening count, site readiness, and schedule. We confirm timing before the order is approved.
Residential projects are backed by lifetime product warranty support on qualifying materials and components. For construction or contractor scopes, we clarify warranty details with the quote so the project team knows exactly what is covered.
Financing options can be reviewed with homeowner replacement quotes, including $0 down options for qualifying projects. Government loan programs change and should not be assumed available; we separate financing from rebate eligibility so your offer is clear before approval.
Our local installation crew has 10+ years of hands-on experience in the GTA and is accountable to DES Windows directly. That gives homeowners and project teams cleaner coordination, consistent workmanship, and clearer post-install support.
Installed home replacement pricing often starts around: Casement/Awning $350–$650 per window · Double Hung/Slider $300–$600 · Bay/Bow $1,200–$3,500 per unit. Construction, renovation, and multi-opening scopes are quoted from sizing, quantity, product selection, and install requirements.
