Replacement Windows and Doors in Thornhill

If you’ve been looking for windows and doors in Thornhill and feel frustrated by endless searching, Eco Choice Windows & Doors makes it simple. We provide energy-efficient replacement windows, durable exterior doors, and expert installation backed by over 23 years of experience. Call 855 273 3261 today to upgrade your home with Eco Choice Windows & Doors.

 
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Trusted Window & Door Installers in Thornhill

As one of the most trusted window replacement companies in Thornhill, Eco Choice is known for its outstanding service, qualified installation team, and ENERGY STAR® certified products. Our certified installers ensure each window or door is fitted with precision to maximize efficiency and longevity. You can also use our Window Cost Calculator to estimate the cost of window replacement for your home.

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Professional Windows and Doors Replacement and Installation Services in Thornhill

Take advantage of government rebates to make your home more energy efficient.

The Home Efficiency Rebate program can get you up to $5,000 in rebates to upgrade to high-performance ENERGY STAR certified windows to help fight climate change.

Save on energy costs and make your home more comfortable with energy-efficient, beautiful, high-performance windows and doors.

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Get Up To$5,000IN WINDOW REBATES

Home Efficiency Rebate

1-855-273-3261
Expert Window Replacement Services in Thornhill

Why Homeowners Choose Eco Choice

Homeowners trust Eco Choice Windows & Doors for quality products, expert installation, and lasting value. With over 23 years of experience, we provide energy-efficient windows, durable exterior doors, and professional service backed by clear pricing and reliable support.

23+ Years of Local Expertise

With over two decades of experience serving Thornhill and surrounding areas, we understand the unique building codes, architecture, and Canadian climate conditions. Our knowledge of the local area allows us to deliver efficient solutions that stand up to seasonal changes, including harsh winters.

ENERGY STAR Most Efficient-Rated Windows

Eco Choice specializes in ENERGY STAR Most Efficient-rated windows. These energy-efficient windows are designed with Low-e coated glass, triple glazing, and insulated frames to minimize heat loss and reduce utility costs. Thornhill homeowners benefit from increased comfort and consistent indoor temperatures year-round.

Made-in-Canada Products Built for Harsh Winters

Our products are manufactured in Canada, designed to handle the fluctuating Canadian weather. Whether you need fiberglass doors, vinyl window replacements, or casement windows, every unit is built to last with enhanced durability and thermal resistance.

Custom Entry & Patio Doors

We offer fully customizable entry door systems and patio doors in a wide range of styles and materials. Choose from modern or classic looks, add decorative glass options, and select from a variety of colours to match your home’s aesthetic while improving security and performance.

Award-Winning Service with Lifetime Warranty

Eco Choice’s professional installation is backed by an industry-leading lifetime warranty, ensuring long-term protection. Our customer satisfaction ratings reflect our dedication to excellence in both product and service. We are proud to be recognized as leaders in the industry with numerous service awards.

Flexible Financing & Government Incentives Available

Thornhill residents can take advantage of affordable prices through flexible financing plans and applicable government rebates for energy-saving home improvements. We help you explore every available incentive to reduce out-of-pocket costs.

Professional Window Replacement & Installation

Professional Window Replacement & Installation in Thornhill

Our window installation process is streamlined to minimize disruption and maximize efficiency. From your initial consultation to final walkthrough, our skilled professionals guide you through each step. We inspect your home’s requirements, recommend the best types of windows, and perform a precise installation using high-grade sealants and materials.

Our Collection of Stylish, Energy-Efficient Windows

Find your perfect fit with Eco Choice’s line of stylish, energy-efficient windows. Whether you prefer bay windows, vinyl replacements, or modern slider windows, all options are built for lasting performance and energy control.

Door Replacement & Expert Installation in Thornhill

Eco Choice offers reliable door replacement services in Thornhill with efficient scheduling, expert installation, and a wide variety of high-performance doors. Our installation team ensures every unit fits precisely, providing enhanced insulation, durability, and visual appeal. Whether upgrading your main entryway or installing new patio doors, we ensure a smooth process and superior finish from start to finish.

Trusted Door Replacement Services in Thornhill

Browse Our Stylish and Durable Door Solutions for Homes

Our focus is on energy efficiency and quality patio doors, garden doors, exterior doors, fiberglass doors, and other glass doors. Our glass doors are fabricated with the latest in technology and comply with strict Energy Star® specifications. Book a free consultation with our team today.

Benefits of Replacing Windows and Doors

Increased Home Value

New windows and doors significantly improve a home’s marketability. Eco Choice products are recognized for enhancing curb appeal and overall property value. Thornhill homeowners investing in custom windows or energy-efficient door systems often see substantial ROI when selling or refinancing.

Improved Energy Efficiency

Our energy-efficient windows and doors contribute to lower energy bills and improved indoor comfort. Upgrading from outdated single pane windows to Low-e coated windows with triple glazing reduces thermal loss during winter and overheating during summer, particularly beneficial in Thornhill’s variable climate.

Enhanced Home Security

Eco Choice’s products offer advanced locking systems, impact-resistant frames, and secure glass technologies to improve home security. Our professional installation ensures every unit is properly fitted to eliminate vulnerabilities. This is especially important for entryways and larger glass areas such as bow windows or slider windows.

What Our Clients Say

Sandra V

Had a great experience with everyone at eco choice. Friendly and professional. Love how my new windows and door look.

 

Matt

From the get-go Terry, the sales rep, was professional and easy to work with. He priced the job competitively with a superior energy star product. Then the install team took over and their workmanship was phenomenal. They took care of the floors, covered the furniture and cleaned up after themselves. Considering the amount of work that was completed in just 2 days the team amazed me with their detail oriented approach. Thanks Eco Choice - I likely will be calling you for my Doors next!

Victor Abel

I recently used Eco Choice Windows and Doors to replace all of my windows and it was a very smooth process! Recommending this company to anyone who has any windows and doors replacement needs.

 

Hope G

The overall use of flatsome is very VERY useful. It lacks very few, if any, things! I loved it and have created my first ever website Punsteronline.com! Best yet, flatsome gets free updates that are great! (and the support is amazing as well!:)

Yasir Tanoli

Their first impression had left me no choice but to call them back for the services.
Very professional approach.

Rosemary Akala

Great service. Had a complaint and they cane back immediately to fix the problem. They worked hard to ensure i was satisfied. Mu windows look great. I will recommend them anytime.

Jay B

I chose two different window companies to do various windows in my home as I liked certain features of each window type. As it turns out, Eco Choice was by far the better company from my experience. If you want a professional window and door company, this would be the one. No wonder they have won multiple awards. Thank you Alani and team.

Marc in Toronto

Dealing with EcoChoice was a pleasure. Joe was our sales rep and provided us with great product options which completely met our needs at a competitive price. Our installers were friendly and tidy. By all accounts, they did a terrific job as our doors work beautifully and look great! We would highly recommend using EcoChoice and plan to use them again for future projects.

Aileen Miziolek

I’ve had a great experience with ECOCHOICE Windows and Doors. They were professional from beginning to end! Isaac sold me exactly what I needed and Nikita installed everything perfectly! I was really impressed with their team. My windows look great and I can’t believe what a difference it’s made in my home! 5 stars for the whole team at ECOCHOICE - I highly recommend them!

Easy Payment Plans

 

No payments or Interest for 3,6 or 12 Months

Replace your windows or doors today and dont pay for 90 days (fees apply)

60 equal installment payments

Pay for replacement windows or doors in convenient monthly installments over five years (interest rates apply)

 

Low monthly payment plan

Have your windows and doors installed without breaking your budget by stretching your payments over longer periods (fees and/or interest rates apply).

 

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40% OFF Energy Saving Windows

FREE Upgrade to Triple Pane Glass

Finance Your Windows & Doors from $69/Month (oac)

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Eco Choice Windows & Doors

Installation Process: What to Expect

Our installation begins with a free consultation, followed by product selection and detailed measurement. Once your custom windows or doors are ready, our certified team completes the installation with minimal disruption. Each phase is handled by skilled professionals who ensure accuracy, cleanliness, and full compliance with building codes. We also dispose of old materials responsibly and provide a final inspection to ensure everything meets our outstanding service standards.

Our Service Locations

FAQs About Window & Door Replacement in Thornhill

The cost varies based on window type, material, and size. Use our calculator for an accurate estimate tailored to your home.

Yes. All our products are made in Canada and designed specifically to withstand extreme Canadian weather, including cold winters and humid summers.

Yes. We provide flexible financing options to help homeowners manage upgrades without financial strain.

Most installations are completed within a day. Custom projects or large-scale replacements may take slightly longer.

Absolutely. We offer a wide range of custom windows, finishes, and materials to suit every home style in Thornhill.

Yes. All our installations come with a lifetime warranty for long-term peace of mind.