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(203) 350-8842
The Most Trusted Replacement Window & Door Company

America’s Most Trusted Name in Windows

Serving Norwalk, CT and the Surrounding Area

The Renewal by Andersen window company became the most trusted name in replacement windows through over 100 years of redefining the home improvement industry. Our exclusive combination of superior, energy efficient materials, a proven process, and certified master installation guarantee a hassle-free experience. Every time.

Plus, our windows and patio doors are made to last—backed by a limited lifetime warranty to prove it. Learn more about our full-service window replacement guarantee below, then contact Renewal by Andersen Norwalk, CT to get started today.

Our 4 Step Process

1. Consultation

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

2. Manufacturing

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

3. Installation

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

4. Customer Care

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

Optimal Energy Efficiency

Because all Renewal by Andersen windows are made with exclusive Fibrex® window frames and double pane glass, they’re optimally energy efficient for any climate.

You can customize your window features based on your area and home interior needs. Start by selecting one of four double pane window glasses, then decide which stationary or functional style best suits your lifestyle, home, and climate needs. Regardless of your choice, our windows are guaranteed to cut costs, and can save you up to 74% on home heating and cooling bills!

See how much you can save with a no-cost energy analysis during your Norwalk home consultation today

Professional Window Installation

Every Renewal by Andersen window and patio door project is guaranteed by Certified Master Installers. This guarantees that only window experts handle your new home improvement—no matter what!

For every type of project, your Renewal by Andersen team of installers are dedicated to total efficiency and quality assurance. You and your family will be enjoying your new window sooner than you think with:

  • Thorough preparation of the work area. Installers protect the work area with durable drop cloths and other precautions to protect your home’s floors and walls.
  • A detail-oriented process to install and test your window or door—as well as seal it off to the elements for total energy efficiency.
  • Total cleanup of the work area to leave it even cleaner than when they arrived.

Get started with Renewal by Andersen Norwalk, CT  today to discover the certified master installation difference.

Renewal by Andersen Fibrex® Frames vs. Vinyl
Fibrex® material is made with 40% recycled wood fiber to combine the most energy efficient qualities of both vinyl and wooden windows.
Windows can be molded to nearly any shape during the extrusion process, and maintain shape for years to come without bowing or bending.
You can also choose nearly any combination of interior and exterior colors. Color is completely saturated into Fibrex® frames to prevent chipping, so you can enjoy vibrant color for years to come.
Our windows are strong enough to hold large panes of glass with narrower frames, so you can experience a great view without risk of decomposition.
Renewal by Andersen windows are defined by unmatched energy efficiency. In any style, and in any climate, they’re guaranteed to reduce heating and cooling costs for your home.

Renewal by Andersen’s Fibrex® composite material is better than any old vinyl or wood window on the market, we can guarantee that. More than anything, while the seasons may change, we are committed to standing by our window replacement product, today, tomorrow, and well into the future. See why so many homeowners in Norwalk, CT love us by reading through our most recent window replacement reviews down below.


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.

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.

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.

We couldn't be happier with all aspects of the process (sales & installation). Everything went very smoothly and I was amazed at how clean my house was at the end. The windows are beautiful and I'm sure we'll see major savings in our heating bills this winter.

Jennifer A.

Excellent service. The install started on the date promised and completed within the indicated time frame. I was pleasantly surprised at how clean the installers left the job site. Everyone I dealt with was extremely professional. When it comes time to replace the French doors, I will be using Renewal by Anderson.

Roger F.

The people, product, and installation surpassed all my expectations. Home is noticeably quieter, cooler in the daytime, and each window has a beautiful view as compared to the old aluminum frame.

John H.

Serving Norwalk, CT and the Surrounding Area

Let us assist you with your next home improvement project! It is our goal to make every part of the window replacement process super easy for you from start to finish. All it takes is one phone call to get started improving the look and feel of your Norwalk area 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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