Window & Door Replacement in Stamford, CT

Address and hours

421 West Ave Building 1

Stamford, Connecticut 06910

203-406-0545

Showroom hours

  • Sunday: Closed
  • Monday: 9 AM-5 PM
  • Tuesday: 9 AM-5 PM
  • Wednesday: 9 AM-5 PM
  • Thursday: 9 AM-5 PM
  • Friday: 9 AM-5 PM
  • Saturday: 9 AM-4 PM
Two people shopping at a Renewal by Andersen showroom location

About us

Welcome to Renewal by Andersen. We would love to meet with you at our Stamford showroom!

We are proud to serve the window and door replacement and installation needs for Stamford and surrounding areas.

Whether you're renovating a colonial, restoring a mid-century, or refurbishing a Cape Cod, Renewal by Andersen's custom replacement windows are built to meet your home's unique design.

Every town, neighborhood, and home is unique. Installation of a replacement windows isn't simply a matter of putting a standard-size window into a hole in the wall. It's a matter of expertly fitting YOUR custom window into YOUR home.

We know window and door replacement-and we know this area. We can't wait to say hello to you in Stamford-stop by today!

4.8/5
4.8/5
1,073 reviews
5 star
971
4 star
38
3 star
11
2 star
12
1 star
41
0 star
0

Google
5.0/5
Jul 24, 2026
Google - RbA of Westchester, NY (534)
The team did a phenomenal job. I am very pleased and impressed with the work performed on my home.
RbA of Westchester, NY (534) replied on Jul 24, 2026:
Michael, we couldn't be happier! It's always rewarding to know that our team's hard work and dedication have made a difference. Thank you and welcome to the Renewal family :)
Google
5.0/5
Jul 24, 2026
Google - RbA of Westchester, NY (534)
I am so happy and impressed with my new windows from Renewal By Andersen I can't stop looking at them and telling all my friends and family. I had my front bay window replaced and my smaller bay window replaced in my son's bedroom. My husband and I had looked into replacing windows many years ago. But it was not the right time. I waited many years to make this investment. It was truly worth waiting for. My windows are 40 years old. I originally met with Ron Comizio My salesman. I can't say enough about the professionalism experience That this salesman has. The entire team and Ryan were very helpful from the beginning to the end. He showed me exactly how lopsided my front window was with a small ball that Slid down an incline and also showed me how the warm air now in the summertime and the cold air in the winter time has been coming in through the windows. He explained that is why we are so cold in the winter and so hot in the summer. He discussed and explained how these windows are newly made, and functional As required by New York State law now, to prevent hot air from coming in in the summertime and cold air in the winter time. We will save money on electricity and we will receive an energy star credit of about $200 give or take an approximate amount, at the end of the tax year. I am also impressed with the initial measurers, surveyors, Radek and his co- worker.. They were at my home for a good deal of time and looked at a comparable unit of one of my neighbors down the way as to get the documentation as to use that for supporting documentation in the event the Condominium board needed that to make their final approval decision. They were impeccable with their measurements and are / were a very Detail oriented. In this regard, Al the windows fit perfectly into my home and I can't say enough on how impressed I am with the expertise , Patience, knowledge, of all involved. Also, Brian Macdonald, the supervisor, was so very helpful during the entire process. He oversaw everything and responded to my emails and phone calls as well as the entire team as well. . Then we have Vincent and Angelika in Installation, and the post insulation department who were also very professional. experienced and knowledgable. Angelika was in touch with me via email and phone throughout the two days that the Installation team was at my home. Vincent contacted me immediately when them windows arrived in the warehouse. He scheduled a tentative installation date . I was very nervous with the purchase and process since as we all know , it is a very big investment. The team made it very easy and I was more relaxed having such a great team working for me.and my husband. Ron our salesman, even returned And was delighted to do so, ,to my home several weeks later, to show me the windows the actual windows that would be installed in my home . I was not able to see them in his vehicle the first time he arrived due to the fact that I could not walk because I had a bad leg due to a medical procedure . I also want to thank Mr Nick Police in the service department who guided me on how to get the serial numbers from my windows. He even helped me on FaceTime on an evening . Most of all I want to thank Mark and his team and the three other workers that worked hard for two days to install the windows. They did not stop working for two days, 8 hour plus days in hot weather conditions.. They wanted and needed to get the job done. They were professional, on time ,detail oriented. I am so impressed with their work. I cannot stop raving about it.. I have sent my Sales Man's card to hundreds of people that I know. I am encouraging all my adjoining townhouse neighbors to also put in new Windows. I am giving Renewal By Andersen, a five star PLUS rating and review. I would not trust any other window replacement company other than Renewal By Andersen.!!! B Please check out their website for all their services and products. "When you have tried all the rest ,now try the best" Signed , happily, a very thrilled Window replacement Customer!!
RbA of Westchester, NY (534) replied on Jul 24, 2026:
Jill, thanks for sharing your positive experience with us. Our team works hard to make your replacement project the best so we're thrilled to hear you enjoyed your experience. Should you need anything from us in the future, please let us know. We look forward to working with you again!
Google
5.0/5
Jul 23, 2026
Google - RbA of Westchester, NY (534)
Needed a glass repair done on our sliding glass door. The crew went above and beyond the scope of the job and the door is better than new. We are very happy with the service provided.
RbA of Westchester, NY (534) replied on Jul 24, 2026:
Daniel, It’s wonderful to hear that our techs went above and beyond to help you! Providing our customers with exceptional service is our top priority. Thank you for taking the time to share your positive experience.
Google
5.0/5
Jul 21, 2026
Google - RbA of Westchester, NY (534)
the whole process from Jeff the sales rep to Mark the tech who measured the exact replacement size needed and finally, Mark and his crew of installers the experience was 5 stars. professional, clean and efficient. I highly recommend them
RbA of Westchester, NY (534) replied on Jul 23, 2026:
Louise, we always appreciate hearing from homeowners after the project is complete. Thanks for trusting our team with your project! If you need anything from us down the road, we're here for you!
Google
5.0/5
Jul 20, 2026
Google - RbA of Westchester, NY (534)
Very happy with my new front entry door. Great material and neat workmanship. Large selection of colors.
RbA of Westchester, NY (534) replied on Jul 21, 2026:
Brigitte, thanks for taking the time to share your experience with us! We're happy to hear you're pleased with your project!
Google
5.0/5
Jul 16, 2026
Google - RbA of Westchester, NY (534)
RbA of Westchester, NY (534) replied on Jul 17, 2026:
Lynn, Woohoo! A 5-star rating - you made our day! Thanks so much :)
Google
5.0/5
Jul 15, 2026
Google - RbA of Westchester, NY (534)
RbA of Westchester, NY (534) replied on Jul 15, 2026:
Patrick, thank you so much for the 5-stars! We're thrilled you had a great experience with us!
Google
5.0/5
Jul 14, 2026
Google - RbA of Westchester, NY (534)
Amazing quality windows and great quality team of people all through the process
RbA of Westchester, NY (534) replied on Jul 15, 2026:
RJ, thanks so much for the review--and thank you for choosing Renewal by Andersen! We appreciate both very much.
Google
5.0/5
Jul 13, 2026
Google - RbA of Westchester, NY (534)
Highly recommended! With the 20 years warranty you will have peace of mind that your home improvement investment will be protected. Our original sliding door was so drafty (original doors since 1972) and when we purchased our townhome, this door replacement is at the top of our list. We did our research and ultimately went with Andersen. They will take care HOA approvals (if any) and the whole process from start to finish. I must say the sales pitch during the initial visit/ consult is a bit lengthy but they are only making sure you understand what you will be getting and signing up for. Overall, I’m so happy on how it looks now and installation did not take long.
RbA of Westchester, NY (534) replied on Jul 14, 2026:
CA R, thanks for taking the time to share your experience with us! We're happy to hear you're pleased with your project!
Google
5.0/5
Jul 13, 2026
Google - RbA of Westchester, NY (534)
RbA of Westchester, NY (534) replied on Jul 14, 2026:
Cindy, thank you so much for the 5-stars! We're thrilled you had a great experience with us!