REPLACEMENT WINDOWS AND DOORS KITCHENER
Choose from a wide variety of energy efficient replacement windows to suit the unique requirements of your home. As one of the few window companies in Kitchener that utilizes Cardinal Glass, you can expect some of the best replacement windows in Kitchener in terms of energy efficiency and value.
Learn MoreSchedule your free in-home,
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REPLACEMENT WINDOWS AND DOORS KITCHENER
Choose from a wide variety of energy efficient replacement windows to suit the unique requirements of your home. As one of the few window companies in Kitchener that utilizes Cardinal Glass, you can expect some of the best replacement windows in Kitchener in terms of energy efficiency and value.
Schedule your free in-home,
no-obligation quote today!
"*" indicates required fields
Looking for replacement windows and doors for your home in Kitchener? Thermo-Bilt is where you are.
Having completed over 30,000 quality windows and doors replacements all over the GTA, including the Kitchener areas in the Waterloo region, we can proudly say that we’ve become experts in the field!
Our high-quality products rely exclusively on cardinal glass, one of the world’s best glass manufacturers. Our window installers are friendly and prepared to answer your questions, no matter what they may be, and are often able to complete projects in under 24 hours.
To demonstrate our dedication to customer satisfaction, all Thermo-Bilt windows and doors installations are backed by a lifetime warranty, meaning you never have to worry about your new windows and doors.
For the best blend of industry expertise and experience, make Thermo-Bilt the go-to for your Kitchener windows and doors replacements.
Over 20 Years of Experience Serving Ontario’s Windows and Doors Needs
Two decades-worth of taking care of Ontario’s windows and doors has taught us a lot and given us the edge Kitchener residents have been looking for. We know that our window installers are committed to the job and take it seriously; Our rigorous window installer training has taken years to develop. Want to see for yourself? To join our long list of happy customers start by getting a free quote today.
Looking for replacement windows and doors for your home in Kitchener? Thermo-Bilt is where you are.
Having completed over 30,000 quality windows and doors replacements all over the GTA, including the Kitchener areas in the Waterloo region, we can proudly say that we’ve become experts in the field!
Our high-quality products rely exclusively on cardinal glass, one of the world’s best glass manufacturers. Our window installers are friendly and prepared to answer your questions, no matter what they may be, and are often able to complete projects in under 24 hours.
To demonstrate our dedication to customer satisfaction, all Thermo-Bilt windows and doors installations are backed by a lifetime warranty, meaning you never have to worry about your new windows and doors.
For the best blend of industry expertise and experience, make Thermo-Bilt the go-to for your Kitchener windows and doors replacements.
Over 20 Years of Experience Serving Ontario’s Windows and Doors Needs
Two decades-worth of taking care of Ontario’s windows and doors has taught us a lot and given us the edge Kitchener residents have been looking for. We know that our window installers are committed to the job and take it seriously; Our rigorous window installer training has taken years to develop. Want to see for yourself? To join our long list of happy customers start by getting a free quote today.
See all Thermo-Bilt Windows in Kitchener

Double Hung Windows
Our double hung windows are an excellent choice for rooms that face decks, porches and walkways.

Casement Windows
Our casement windows are reliable, practical, energy efficient and designed to keep harsh weather out.

Bay Windows
Our bay windows are decorative that curves outwards from the wall, allowing you amazing views.

Single Hung Windows
Our single hung windows are easy to clean and take up no additional space when open.
Thermo-Bilt Reviews
See all Thermo-Bilt Doors in Kitchener

Steel Entry Doors
Our steel entry doors are rich with features that make them an excellent choice for your home.

Fiberglass Doors
Our fiberglass entry doors are a perfect compromise between aesthetics, durability, and safety for your home.

Sliding Patio Doors
Our sliding patio doors are an excellent way to save space in your cozy home.

Hinged Patio Doors
Our hinged patio doors swings outwards, opening up the inside of your house to your beautiful yard, garden, or patio.
Our Work
Our window company in Toronto has worked on thousands of homes. Take a look at the range of Toronto window installation jobs we’ve completed over the years.
FAQs
Are Energy Efficient Windows a Good Investment?
Of course! Not only are energy efficient windows great for the environment, they’re amazing for your bottom line too. Although Ontario no longer supports the GreenON program, energy efficient windows still offer a host of savings. When looking for glass replacement Kitchener, Thermo-Bilt’s windows and doors come standard with double-glazing, and some even have the option for triple-glazing; This level of insulation protects your home’s temperature from the great outdoors, meaning you won’t have to adjust your thermostat or air conditioning nearly as much. Compared to traditional windows, energy efficient windows have been proven to save Kitchener homeowners an average of 40% on their energy bills.
Savings aside, when you’re ready to list your Kitchener home, windows and doors replacement will be seen as a major plus by potential homebuyers. Real Estate agents will be happy to let them know that the energy savings from your new windows and doors will be passed on to them.
Why Choose Vinyl Windows in Kitchener?
Vinyl windows are a wonderful choice for your Kitchener home. Compared to other materials available on the market, they are significantly cheaper, but this isn’t the only reason to buy vinyl windows. First off, vinyl windows’ energy efficiency is hard to beat. Vinyl grips on to the glass and frame, forming an air tight seal that doesn’t allow air to flow in and out of the house, maintaining a comfortable climate. As a material, it also doesn’t allow for climate transfer, meaning that cold or warm air coming from outside will have no effect on the indoor temperature.
Aesthetically speaking, vinyl is a versatile material that is easy to paint and comes in an assortment of colours.
The Cardinal Glass Difference
Cardinal Glass, Thermo-Bilt’s only choice when it comes to glass manufacturers, is a highly innovative company that designs and manufactures the most advanced residential glass products in the industry. The Energy Star® compliance achieved is due to their highly efficient, industry-setting insulation properties. Cardinal Glass windows are effectively able to keep warm air from escaping your home in winter, while repelling harmful UV rays and heat in the summer – without producing any glare or tint. All Cardinal Glass products come coated with a special self-cleaning coating that uses the power of UV rays and rain water to make your windows maintenance-free.