Renewal by Andersen

Colorado's Trusted Replacement Window Supplier

Our Current Promotion

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Renewal by Andersen of Colorado is an independently owned and operated affiliate operating in CO and NM. Offer not available in all areas. Discount applied by retailer representative at time of contract execution and applies to purchase of 3 or more windows and/or entry or patio doors. 3% cash discount for payment in full by cash or check applied at time of sale. Cannot be combined with other offers. To qualify for discount offer, initial contact for a free Window and Door Diagnosis must be made and documented between 11/1/19 and 11/29/19 with the appointment then occurring no more than 10 days after the initial contact. No payments and deferred interest for 12 months available to well qualified buyers on approved credit only. Not all customers may qualify. Higher rates apply for customer with lower credit ratings. Financing not valid with other offers or prior purchases. No Finance Charges will be assessed if promo balance is paid in full in 12 months. Renewal by Andersen retailers are independently owned and operated retailers, and are neither brokers nor lenders. Any finance terms advertised are estimates only, and all financing is provided by third-party lenders unaffiliated with Renewal by Andersen retailers, under terms and conditions arranged directly between the customer and such lender, all subject to credit requirements. Renewal by Andersen retailers do not assist with, counsel or negotiate financing, other than providing customers an introduction to lenders interested in financing. Window Warmth, LLC d/b/a Renewal by Andersen of Colorado "Renewal by Andersen" and all other marks where denoted are marks of Andersen Corporation. ©2019 Andersen Corporation. All rights reserved. ©2019 Lead Surge LLC. All rights reserved. *Using U.S. and imported parts.

Replacement Windows

A lot of things can change in 20 years. Your windows shouldn't be one of them.

Double Hung

The traditional look with a wide range of design options.

View Double Hung Windows


Easy to open so you can let fresh air in and stay out of the weather.

View Awning Windows


Enjoy big views with expansive, uninterrupted glass.

View Casement Windows


Add architectural interest while maximizing room space

View Bay/Bow Windows


Great for letting in light from those hard to reach spaces

View Picture Windows


Ideal for maximizing a room's view and ventilation

View Sliding Windows


15 different shape options, including custom and combination options

View Specialty Windows

Replacement Patio Doors

Transform your space and bring the outdoors in.

Hinged French

Provide easy access to your home's exterior or patio

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Sliding French

Save space and maximize your view with sliding doors.

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Why Us?

Exclusive Products

Designed for energy efficiency, durability, beauty, and minimal maintenance, our windows are made from our patented Fibrex® material that stand the test of time.

Signature Service

Our certified master installers have experience working in homes of all shapes, sizes, and styles. We get the job done right and our installations are guaranteed for life.

Homeowner Warranty

A lot of things can change in 20 years. Your windows shouldn't be one of them. Our warranty is our promise to you and is backed by extensive testing.

What Our Customers Say

We take pride in expertly fitting YOUR custom window into YOUR home.

This completed all the windows in my house. The crew was awesome.The way he finished these windows makes the others look sad

Installers were great - windows seem great they haven't fallen off and so far no leaks. Thank you.

Love the windows. Salesman was very good and informative. Instillation people very friendly and helpful. Installation people very neat and countess of my home and furniture.

Great quality of products! Staff is very friendly and professional, and they always do a great job communicating with us. They also make sure that our needs and expectations are met! We are very satisfied with Renewal by Anderson's service!

We had some major issues during 1st install, but Renewal did an amazing job making sue everthing was corrected so my final feeling is very positive.

Everything has been great so far. Looking forward to getting the rest of the windows replaced.

Great service, great product, great people. Worth the price. We stupidly tried a cheaper company for a few of our windows. It's true that you get what you pay for. Thank you, Renew by Andersen.

The new windows and door have become much more reliable in temperature control. They are very attractive.

The new windows look GREAT! Really notice the difference with the first cool weather. The installation crew were very professional and courteous.

I can not express enough of all the young men who did the windows for us. Very, very neat, clean, very polite. Just wonderful men. I am happy we had a wise choice with your company I tell everyone about. Thank you all so very much!

Everything went very smooth, from the initial meeting to the install. Brian and Adam were very friendly and professional. Would recommend Renewal by Anderson to anyone.

Not only is it a great product, but every single person we interacted with from the beginning were terrific!!

we had some of our windows replaced and are already starting the process to do more of the remaining windows. We're happy with what has been done thus far.

The windows are fantastic ... I am slowly working to replace all the windows in my home. I wish they were not so expensive. But they are beautiful, efficient, and I really like the almost invisible screens. Thanks

The installers were an hour late because of problems on previous job. They did call and let me know that they would be late. I did have to call on the day before install to confirm which renewal rep was supposed to do.

Installers did an outstanding job, did not rush the installation and did it right. Very pleased

Anderson Windows gave us an estimate of the work that needed to be done and worked within the time frame and budget. It was nice to not have any surprises. We will ask them to come again to do further work in our house

The entire project was superbly handed from beginning to end. The windows are such a great up grade. Installation was flawless, great crew.

I was very impressed with Joe & Randy. The were so efficient and friendly. My 6 year old granddaughter told her dad they were so professional because they put red carpets over our floors so they didn't get dirty. They were super!

The only issue we didn't understand was the painting of the exterior of our home. The box wasn't initialed on our paperwork, and ultimately is proving difiicult to paint.

Great windows and slider. Great job fully guaranteed. How can you go wrong with Anderson. I am now just filling up my 50 characters.How's that ?

Everyone we talked to was friendly and professional. The work was done efficiently with very little time exposed to outside weather. We love this product and will get more when we need them. Thanks

Installation crew were great. Very proffional. Kept a clean and neat job site. They respected our home and property. The crew leader was excellent.

We love the windows, no need for drapes to hold in our out the weather. They replaced the moulding around the sliding glass door and it matches the rest of the house. We love them so glad to have before a Colorado Winter.

Great quality! We have noticed a difference immediately with the room temperature with record hot weather. Great experience all away around!

Industry Partners

Our commitment to our products, customers, and the environment is recognized throughout the industry.

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