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The Most Trusted Replacement Window & Door Company

Renewal by Andersen
Replacement Windows and Doors in Danbury, CT

At Renewal by Andersen, we’re backed by over 100 years of industry experience. As a full-service window replacement company quality assurance, customer care, and a hassle-free experience are guaranteed at every step. Get started with a consultation for your Danbury area home when you contact us today!

Proudly Serving the Danbury, CT Area Including: Bethel, Brookfield, Redding & More

How Can We Help with Your Next Home Improvement Process?

A new window or patio door can completely redefine the look and feel of your home, but it’s hard to know when and how to get started.

That’s why Renewal by Andersen provides full-service, hassle-free window replacement and patio door installation services. Our process is built around your needs for a totally customized experience throughout. We start with an informative in-home consultation to determine which products are best for you, then help you choose from multiple design options at each step to create your ideal home improvement. Renewal by Andersen experts take it from there, delivering an installation that’s fast, accurate, and functional for your home. Guaranteed.

Learn more about our polices, practices, and services.

Our 4-Step Process




Our design consultants listen to your needs and create a plan to improve energy efficiency and enhance your home’s beauty.




Project Technicians ensure accuracy and answer any last minute questions before sending in the order for your fully customized windows.




Our Installers treat your home as if it were their own and clean up afterwards.


Customer Care

Customer Care

A robust limited warranty is backed by a commitment to making sure your windows function as expected.

Why Renewal by Andersen?

Renewal by Andersen replacement windows and patio doors are met with unmatched beauty, durability, and energy-efficiency which our customers love. With Renewal by Andersen’s Signature Service, you can count on us to do the job right with a respectful approach and professionalism you’d expect from an industry leader.

Your Danbury Renewal by Andersen team is dedicated to your ideal home improvement. That means listening to your needs and concerns at every step to deliver a superior, custom experience every time. Plus, our process includes a dedicated specialist for each step—so you can expect total consistency throughout the installation process.

We believe homeowners should be able to make a well-informed choice. That’s why our process begins with information. Your initial in-home consultation is complete with swatches, samples, research, an energy efficiency analysis and more—and all free of charge! Our design consultants lay out all your options with no obligation, and no hidden fees.

All window and door projects are performed by certified master installers. That means your installation is backed by the experience, skill, and quality assurance of expert craftsmen. Your installers are familiar with every type of window and patio door, too, so they can help you achieve the exact style and configuration you’re looking for. Learn more about our experts at every step of the process when you contact us to get started today.

It all starts with a comprehensive in-home consultation with your Renewal by Andersen design consultant. They’ll go over all your options—from design, to materials, to special financing—then let the project team take it from there. A project technician measures and prepares the work are for total accuracy, and sends your custom improvement to be manufactured.

Certified master installers take it from there for a totally hassle-free process. Because we own every step of the process, a Renewal by Andersen window or door is designed, ordered, and installed with consistency. Every time.

All windows are made with superior proprietary materials for lasting value. This includes Fibrex®, our composite window frame material made with 40% reclaimed wood fiber to combine the benefits of wooden and vinyl windows. That means your windows perform better, more efficiently, and much longer than other replacement windows—and they’re all custom-made in America to fit your home.

Can You Afford to Skip Out on Professional Installation?

A great window is only as good as the installer behind it. An incorrect installation can lead to…

  • Cracked joints
  • Loss of heated or cooled air
  • Exposure to the elements
  • Exposure to pests
  • Water infiltration, which can lead to serious damage to the windows and structure of your home

Be sure to call one of our window replacement experts at Renewal by Andersen to get the job done right the first time and avoid these costly mistakes.

20 Year Durability Study

We put our windows to the test by inspecting them after 20 years of regular use. These windows withstood variable climates, weather, and everyday wear and tear. Our team removed them from the home to find that even after two decades they were still in perfect working order! Plus, their Fibrex® frames didn’t chip, crack, bend or fade—inside or out! That’s why we back our windows with a 20-year durability guarantee.


The Renewal by Andersen limited warranty is one of the strongest you’ll find on any window or patio door, at any price. It includes 20 years on glass, 2 years on installation, and 10 years on frame and hardware. It’s non-prorated and fully transferable, should you sell your home. Ask your Renewal by Andersen sales consultant for complete written details.

Frequently Asked Questions About Our
Window Replacement Services in Danbury, CT

How much does it cost to replace windows in Danbury?

Each replacement window and door from Renewal by Andersen is custom built according to each customer’s specifications. The cost of custom windows and doors does vary while also factoring in the size of your project. Check out our monthly discounts or call our Danbury team today to discuss flexible financing. Homeowners can also explore our special offers <a href=”/special/” >here</a>.

Who replaces windows near me?

Explore all the installation services Renewal by Andersen in Danbury has to offer homeowners in the surrounding area. From design to installation, our team of experts will help you through every stage of your replacement project. Learn more about our service areas <a href=”/service-areas/”>here</a>.

How do I know if I need windows replaced?

Reasons may vary but often are determined by age or poor performance. If you’ve noticed that your windows are difficult to open, leaking, or fogging with condensation. Windows on homes in Danbury should be replaced every 15 to 20 years for optimal performance benefits.

What time of year should I replace my windows in Danbury?

While peak season is typically in spring and summer, our installation services are available all year long in Danbury. We’ve developed a streamlined process that ensures an efficient installation that minimizes your life interruption, even in the heart of the winter season.

Can I install Renewal by Andersen windows myself?

Homeowners in Danbury value the opportunity to customize their ideal replacement windows. Since the windows are custom designed, they are not eligible for self-installation. Renewal by Andersen offers a start-to-finish process that includes efficient installation and access to industry-leading experts.

How long does it take to replace windows in Danbury?

While each project’s timeline varies based on the size of the project, Renewal by Andersen has developed a tried-and-true installation process for Danbury homeowners that minimizes your life interruption as much as possible. Discuss your project’s specific timeline with our specialists during your free consultation.

What to expect during window replacement?

You can expect to receive Renewal by Andersen Signature Service which brings together the best people in the industry, a superior process, and an exclusive product. From design to installation, we are committed to providing efficient replacement service for each customer throughout the Danbury area.

Does Renewal by Andersen offer a warranty?

With an industry-leading warranty, Danbury homeowners can cover the glass, Fibrex® material, and labor costs, if your custom windows are damaged. Contact our customer care experts for more warranty information.
Visit for details.
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Patio Door Feature

In addition to replacement windows we also have a quality selection of patio doors to choose from. We offer traditional French style patio doors in both hinged and sliding options as well as more contemporary sliding glass patio doors. To accentuate the look and feel of your unique home and style we have a range of color options, glass, screens, hardware and accessories to choose from. Take a look at the selection of patio doors that Renewal by Andersen can install in your home below!

Learn More


I love my new windows, made a HUGE difference in the drafts, keeping wind noise out, and keeping heat in. I also choose a different style and the view is much nicer, easier to open and close

Tonya B.
Rating: 5

We are extremely pleased with our large dining room window. The old window was not efficient; letting cold air into the house in the winter as well letting heat from the furnace outside! The installer was very professional, efficient and cleaned everything up nicely. The entire experience from sales to installers through follow-up was a pleasure.

Seth Y.
Rating: 5

Replaced 12 "old" draft double hung windows with new double hung windows. Remarkable improvement in maintaining and constant comfortable temperature in the rooms. Great workmen and a great finished job.

Tangelia N.
Rating: 5

Unrivaled Style

In addition to long-term durability, Renewal by Andersen custom and specialty windows turn nearly every unique vision into a reality. Choose from 15 shape options and up to 51 color combinations to match your style or create something entirely new. Every shape of specialty window-including arched, triangular, and circular-can be further customized with style options at every step.

Custom grilles, hardware finishes, and interior and exterior colors are available for every type of window, too. Learn more about specialty windows and their multiple design options.

Proudly Serving Danbury, CT and the Surrounding Area

We would love to help you with your next home improvement project! Our goal is to make the entire window replacement process super easy for you from start to finish. All it takes is a single phone call to get started improving the look and feel of your home. Ready to schedule your free in-home replacement window consultation? Don’t hesitate to give us a call today and ask about our special offers!

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