Price

Starting Price Ranges — Installed in GTA

Casement / Awning
$350 – $650
per window, installed
Double Hung / Slider
$300 – $600
per window, installed
Bay / Bow Windows
$1,200 – $3,500
per unit, installed
Entry / Patio Doors
$800 – $2,500
per door, installed

Prices vary by window size, glass type (double vs. triple pane), and installation complexity. Most GTA homeowners qualify for $5,000–$40,000 in government rebates, reducing out-of-pocket cost significantly. Fill out the form below for your exact price.

Get Your Exact Replacement Quote + Rebate Eligibility Check — Free:

Customer Reviews

Results are fantastic

I was nervous about replacing all our windows before winter, but DES made it stress-free. They stuck to the timeline, explained everything in detail, and the results are fantastic. Our energy bill has already gone down.

Mark B., Mississauga

Windows look incredible

We got quotes from three companies, and DES was the most transparent and reasonably priced. The installers were courteous, efficient, and clearly knew what they were doing. Our new windows look incredible.

Elena D., Scarborough

A great experience

DES Windows installed our new front entry door and patio sliders — the quality is top notch, and the curb appeal is amazing. Installation was quick and hassle-free. A great experience from start to finish.

Jason T., Etobicoke

Highly recommend!

Absolutely thrilled with our new windows from DES! The team was professional, fast, and left our home cleaner than they found it. Noticed a huge improvement in warmth and sound insulation right away. Highly recommend!

Sarah M., North York

Common Questions

Frequently Asked Questions

Do I qualify for the $40,000 government rebate?

Most GTA homeowners qualify for $5,000–$40,000 in rebates through Canada Greener Homes, Enbridge Home Efficiency Rebate Plus, and Ontario IESO programs. Eligibility depends on your home's age, current window type, and upgrade scope. We check your eligibility at no cost — fill out the free quote form and we’ll have your rebate breakdown ready within 2 hours.

How long does window installation take?

For most GTA homes, installation is completed in a single day. From approval to install day, the typical timeline is 2 weeks — we handle ordering, scheduling, and all paperwork so there’s nothing you need to coordinate. Our crew cleans up completely before leaving.

What does the lifetime warranty cover?

Our lifetime warranty covers all materials and components — glass seal failures, hardware defects, and frame issues — for as long as you own the home. There are no hidden clauses or fine print. If anything fails due to manufacturing or materials, we fix or replace it at no charge.

Can I finance with average or below-average credit?

Yes. Our same-day financing approval is accessible to most homeowners. We offer $0 down, $0 due on install day, and monthly payments from $45/month with up to 12-month payment deferral. Government loan programs (0% interest, up to $40,000) are also available for qualifying homeowners regardless of credit score.

Are your installers your own employees or subcontractors?

Every installation is done by our own certified crew — no subcontractors. Our team has 10+ years of hands-on experience in GTA and is accountable to DES Windows directly. This means consistent quality, clean workmanship, and no third-party liability issues.

What’s the price range for window replacement?

Starting prices installed in GTA: Casement/Awning $350–$650 per window · Double Hung/Slider $300–$600 · Bay/Bow $1,200–$3,500 per unit · Entry/Patio Doors $800–$2,500. After applying government rebates most homeowners pay significantly less. Get your exact quote free — no obligation.