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. 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 5/11/19 and 5/31/19, with the appointment then occurring no later than 6/10/19. This 36 month financing is 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 36 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.

We were extremely happy with the installation crew. They were very professional and very clean. We couldn't be happier with the process and product.

We love our new window! It made our master bedroom much more comfortable in the summer months. We now have a stunning view of the mountains!

Very impressed with the whole process of the company. Did an awesome job. I do wish the windows were cheaper. But isn't this our wish for everything.

From the first meeting with our sales consultant through the installation the process was extremely pleasant. We love our new windows and would recommend Renewal by Anderson to our family and friends. Thank you

We are very happy, very satisfied... We will use your windows again when we do some more remodeling! We have had no issues.

They were prompt and efficient! The windows look great and we immediately could tell a difference within the rooms(temp wise).

Love my patio window and love that I have it tinted. My bedroom window is beautiful, love the tinted and the sliding window.

I absolutely love my new windows! Everyone I dealt with during the project was great! I would recommend Renewal by Andersen to anyone considering replacing their windows.

The installers did a great install, were very polite & complete & communicated with us through the day.

The new patio sliding door is both beautiful and functional. Your crew was able to install the door within the existing wood frame. The person you recommended for staining the wood was able to match the existing wood perfectly. Thank you!

Fantastic consultant. Great communications. Installation crew is second to none. Thanks!

Windows look great, and sales and installation was a breeze. Friendly and very professional installers worked overtime and got a three-day installation done in two ahead of a big snowstorm, and everything is perfect.

Installer had to leave twice. Once to get wood trim for windows and the other was to get concrete drill bits. Job was to install 3 48x48 basement windows

Everything went great despite a slightly more difficult installation than expected. Very expensive windows, but very happy.

Everything was done satisfactory and within a timely manner. I was really impressed with the quality and function of the windows.

Everyone from the initial sales associate, to the guy who came to measure, to the installation crew was great. I also love the windows. They are keeping the heat out much better than the old ones.

Great job! Exceeded our expectations in every way. The install was clean and the crew was great. Sooo, from the first contact with the sales advisor to the final clean up, you guys did an outstanding job. Thank you.

Your personnel and services are as high in quality as your product. In other words, they just can't be beat!

Top quality from start to completion. I was impressed with the speed, knowledge, friendliness and professionalism of the representatives and installers. Great product. Great service.

I have put Anderson window in my home in Ft. Collins and two vacation homes in Winter Park. They are so efficient and I feel I have gotten moneys worth.

We were fully satisfied with the installation, quality, and appearance of the three windows in our bedrooms.

Very pleased with the workmen that came to install the windows. They brought in tarps to keep my wood floors from being damaged. They also explained what they were doing and why it was being done. Thanks for the great experience.

My installers were AWESOME!! I don't think they could have been better - I am so very pleased with everything - from the sales person to the finished product. Thank you!

The window is very nice and the installation was excellent. The excellence comes at a premium price.

From your sales person to installer and painter, all were exceptional and very accomodating and helpful. Very professional. I would certainly use your company again.

Industry Partners

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

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