Great Windows

at 15 Heritage Rd # 20, Markham, L3P 3T1 Canada

Locally owned and operated, Great Windows serves Markham and York Region with exactly that, great windows. And great service. And great prices.

Great Windows
15 Heritage Rd # 20
Markham , ON L3P 3T1
Contact Phone
P: 416-639-1837


Opening time

  • Mondays: 08:00- 18:00
  • Tuesdays: 08:00- 18:00
  • Wednesdays: 08:00- 18:00
  • Thursdays: 08:00- 18:00
  • Fridays: 08:00- 18:00
  • Saturdays: 09:00- 17:00

Company Rating

73 FB users likes Great Windows, set it to 1 position in Likes Rating for Markham, Ontario in Home Improvement category

Generated summary (experimental)

Protect Your Home from the Elements with Durable Replacement Solutions Struggling with a High Utility Bill?
Cut Down Costs with High-Performance Windows and Doors Upgrade Your Home from the Inside Out with Your Choice of Styles, Colors, and Materials Improve Home Comfort and Security with Residential Windows and Doors Made to Fit Custom-Made Replacements for Your Home’s Best First Impression
Are you searching for replacement windows and doors in Markham, Ontario, Canada?
Windows and doors by Great Windows are custom made for your home.
Our commitment to our customers doesn’t stop at manufacturing and providing the best in today’s windows and doors, we are proud to offer a lifetime transferable warranty and fast, professional replacement installation from the experts.
Energy efficiency replacement windows by Great Windows offer stability, strength, and elegance, in your choice of window styles, shapes, and colors.
What is even more, you’ll have peace of mind knowing that your replacement windows were installed by our very own team of master installers – true craftspeople with experience replacing windows and doors in homes of all styles, shapes, and sizes.
Windows by Great Windows are specially designed with superior thermal insulating properties to keep your home comfortable all year round and help you save money on your energy bills.
When browsing our vast selection of windows and doors, look for replacement options with an ENERGY STAR certified seal.
Windows and doors aren’t just a beautiful addition to your home’s décor; they play a vital role in protecting your home from the elements.
To make the most out of your window and door investment, it’s essential to choose a superior product with the strength to last the test of time, and the durability to withstand even the most extreme temperature swings.
Replacement windows by Great Windows are guaranteed to withstand corrosion, cracking, blistering, and flaking.
At Great Windows, we understand that your home’s windows and doors should be as beautiful as they are functional.
Great Windows signature service promise is committed to giving you and each one of our fantastic customers the best experience possible.
With Great Windows, you receive a product backed by the superior reputation of Great Windows with the masterwork of experienced and passionate installers.
Great Windows provide your choice of energy efficient windows that are ENERGY STAR rated and certified to reduce cooling and heating costs.
We offer hassle-free services for all aspects of your window and door replacement and installation
From design to manufacturing, installation, and servicing your product, we take responsibility for the entire replacement process – giving you the single point of contact you need to streamline your home-improvement project experience.
It’s the kind of service you would expect from the Great Windows name, and it’s only available here, at Great Windows.