REPLACEMENT WINDOWS AND DOORS NEWMARKET
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 Newmarket that utilizes Cardinal Glass, you can expect some of the best replacement windows in Newmarket in terms of energy efficiency and value.
Learn MoreSchedule your free in-home,
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REPLACEMENT WINDOWS AND DOORS NEWMARKET
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 Newmarket that utilizes Cardinal Glass, you can expect some of the best replacement windows in Newmarket in terms of energy efficiency and value.
Schedule your free in-home,
no-obligation quote today!
"*" indicates required fields
Living in Newmarket? We’re proud to offer replacement windows and doors in your area.
What makes Thermo-Bilt’s replacement windows and doors different than other companies in Newmarket and Ontario? Our commitment to 100% customer satisfaction, backed by our lifetime manufacturer’s warranty, high-calibre products that are energy-efficient, and our custom windows and doors that come in many shapes and styles that are built to last. We’ve completed over 30,000 windows and doors replacements over the years and are not prepared to stop any time soon.
Check out our product lines below for your Newmarket windows and doors needs!
Thermo-Bilt has been a trusted name in replacement windows and doors for over 20-years.
Our expert team of Newmarket window installers are not only knowledgeable in professional fitting and installation, but is also customer service-oriented, always ready to answer questions and put worries to rest. In a pinch? Thermo-Bilt’s installation process can often be carried out over the course of a single day, meaning you won’t have to miss work, or rearrange your busy schedule worrying about your replacement windows and doors. After over two decades of dedicated door and window installation service, we’re proud to call ourselves one of the best windows and doors companies in Toronto, and across the GTA.
Living in Newmarket? We’re proud to offer replacement windows and doors in your area.
What makes Thermo-Bilt’s replacement windows and doors different than other companies in Newmarket and Ontario? Our commitment to 100% customer satisfaction, backed by our lifetime manufacturer’s warranty, high-calibre products that are energy-efficient, and our custom windows and doors that come in many shapes and styles that are built to last. We’ve completed over 30,000 windows and doors replacements over the years and are not prepared to stop any time soon.
Check out our product lines below for your Newmarket windows and doors needs!
Thermo-Bilt has been a trusted name in replacement windows and doors for over 20-years.
Our expert team of Newmarket window installers are not only knowledgeable in professional fitting and installation, but is also customer service-oriented, always ready to answer questions and put worries to rest. In a pinch? Thermo-Bilt’s installation process can often be carried out over the course of a single day, meaning you won’t have to miss work, or rearrange your busy schedule worrying about your replacement windows and doors. After over two decades of dedicated door and window installation service, we’re proud to call ourselves one of the best windows and doors companies in Toronto, and across the GTA.
See all Thermo-Bilt Windows in Newmarket

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 Newmarket

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?
Absolutely! Despite the fact that the Ontario government has ended the Ontario energy rebate program, GreenON, energy efficient windows still mean big savings for Newmarket homeowners. Designed in a way to prevent indoor air from escaping and outdoor air from entering, energy efficient replacement windows are the perfect tool for climate control in your home. Between their double- or triple- glazed windows, and thoroughly sealed frames, energy efficient windows are proven to make a big impact on your monthly energy bills and HVAC costs.
Aesthetics aside, energy efficient replacement windows and doors can add tremendous value to your property. When it comes time to sell, why not set your Newmarket home apart from the rest of the pack, with beautiful and efficient replacement windows and doors?
Why Choose Vinyl Windows in Newmarket?
Vinyl windows should be your go-to choice when selecting a material for your replacement windows. Why? First, vinyl windows are known to be more energy efficient than many other window types and materials. Their superior air tightness and firm seal, prevents airflow leakage, condensation, and drafty windows, which can all lead to costly consequences in the long run. Vinyl windows are also great for customizing. Choose from a number of colours, or add paint of your choice to white vinyl for a creative touch to your décor.
The Cardinal Glass Difference?
Cardinal Glass is Thermo-Bilt’s secret ingredient that goes in to all of our replacement windows and doors. On a mission to design and fabricate the most advanced residential glass products on the market, this innovative glass manufacturer does a lot to make sure that their products are superior to others. Between its superior insulation value, unique self-cleaning coating, and Energy Star certification, Cardinal Glass products always impress Newmarket homeowners.