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BEST RATED DENVER, CO WINDOW COMPANIES

3 Best Window Companies in Denver, CO

Expert-recommended Top 3 Window Companies in Denver, Colorado. All of our window companies actually face a rigorous 50-Point Inspection, which includes customer reviews, history, complaints, ratings, satisfaction, trust, cost and general excellence. You deserve only the best!

Renewal By Andersen - Denver, CO Window Companies - Project Image
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9+ YEARS IN TBR
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RENEWAL BY ANDERSEN

(5.0 Score)
1401 West Bayaud Avenue, #7,
Denver, CO 80223
Directions

Since 2016

Specialty:

✓ Hinged French Patio Doors ✓ Installation and Replacement ✓ Sliding Windows ✓ Awning Windows ✓ Bay Windows ✓ Bow Windows ✓ Casement Windows ✓ Double-Hung Windows ✓ Gliding and Sliding Windows ✓ Picture Windows ✓ Specialty and Combination Windows ✓ Contemporary Glass ✓ Replacement Patio Door ✓ Entry Doors

"Renewal by Andersen has over 100 years of experience in the window replacement industry. Their factory-trained professional staff guides you through the entire cycle to make you feel relaxed and at ease of mind. The window company PROVIDES 48 different color combinations, including dual colors for interiors and exteriors, and 11 different hardware finishes. They specialize in hinged French doors, contemporary sliding doors, and traditional sliding patio doors. Every door offers robust security designed into the manufacturing process, as well as superior energy efficiency and durability. Their windows are designed and customized to suit the needs of their customers. The window company has a systematic approach to delivery, professional installation, and commitment to achieving homeowners' satisfaction. Renewal by Andersen in Denver offers a limited 20-year guarantee and free consultation.

2026 Update: Renewal by Andersen maintains the indoor temperatures, reducing heating and cooling while mitigating UV radiation."

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License #20101532849

Price:

Vinyl Windows
From: $500
To: $900

Discount:

40% Off - Buy One Window or Door, Get One Window or Door

$500 Off Select Entry Doors

Contact:

(720) 303-8859 (800) 320-4440

Mon-Thu: 6am - 9pm
Fri: 6am - 8pm
Sat & Sun: 7am - 8pm

TBR® Inspection Report:

Lifetime Home Remodeling - Denver, CO Window Companies - Service Team Image
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9+ YEARS IN TBR
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LIFETIME HOME REMODELING

(4.9 Score)
9525 East 40th Avenue Suite, Suite 160,
Denver, CO 80205 Directions

Since 2009

Specialty:

✓ Awning Windows ✓ Bay Windows ✓ Bow ✓ Casement ✓ Double Hung ✓ Single-Hung ✓ Specialty and Custom Windows ✓ Cedarmill Panel ✓ Wood ✓ Beaded Smooth Lap ✓ Installation ✓ Straight Edge Shake ✓ Vinyl ✓ Staggered Edge Shake ✓ Slider ✓ Bi-Fold ✓ Inswing French ✓ Sliding French ✓ Sliding ✓ Patio and Entry Door Replacement ✓ Roofing ✓ Siding ✓ Stucco Panel ✓ Smooth Batten Boards Slidings

"Lifetime Home Remodeling is a locally owned and operated company that promotes small companies and American suppliers. They have a team of skilled factory craftsmen and qualified support staff. They offer a lifetime warranty for all their windows and doors. The window company specializes in the installation of customized replacement windows. All windows sold by Lifetime Windows & Siding are Energy Star rated, backed by a lifetime service and labor guarantee, and offer a transferable warranty to the next homeowners. Lifetime is the number one dealer of Infinity by Marvin windows, and Marvin is the leading brand of fiberglass windows in the world. The company has over 10,000 happy customers. Lifetime offers double lifetime warranty protection. Free estimates are available here. You can schedule a consultation at any time.

2026 Update: Lifetime Home Remodeling installs only premium quality products. Peter Svedin is the Founder and CEO."

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License #20031096423

Price:

Windows: $5,000

Discount:

40% Off for your Entire Project

50% Off Windows & Doors for Buy One, Get One

25% Off for Bath & Siding

Contact:

(303) 536-8809 (303) 934-4508

Mon-Fri: 8am - 7pm
Sat & Sun: 10am - 6pm

TBR® Inspection Report:

Champion Replacement Windows of Denver - Denver, CO Window Companies - Project Image
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5+ YEARS IN TBR
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CHAMPION REPLACEMENT WINDOWS OF DENVER

(4.9 Score)
10035 East 40th Avenue, Suite 400,
Denver, CO 80238 Directions

Since 1953

Specialty:

✓ Double-Hung Windows ✓ Casement Windows ✓ Sliding ✓ Bay Windows ✓ Bow Windows ✓ Picture ✓ Garden ✓ Shaped ✓ Basement ✓ Hopper and Glass Block ✓ Patio Enclosures and Covers ✓ Screen Rooms ✓ Composite 365 and Premium Vinyl Siding ✓ Entry ✓ Storm ✓ Patio Doors ✓ Screen

"Champion Replacement Windows of Denver offers the highest quality, limited-lifetime windows and doors. The team has completed 16,200 projects. Their custom-built replacement windows are suitable for both residential and commercial properties. Their skilled employees carefully handcraft every product in their manufacturing facility and ensure the highest level of quality. They provide energy-efficient windows that reduce your electricity bills. Champion Replacement Windows of Denver products are installed by friendly, expert installation technicians who clean up thoroughly before leaving for a stress-free experience. They provide a limited lifetime warranty on windows, sunrooms, siding, and doors. Champion Windows offers a free in-home estimate, and financing options are available.

2026 Update: Champion Replacement Windows of Denver products are manufactured in the USA."

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License #20101508295

Price:

Vinyl Replacement Window:
From: $600
To: $4,200

Discount:

30% Off Sunrooms

30% Off Siding

25% Off Decorative Glass Entry Doors

$250 Off - Save an Additional $250 on Your Window Order

$1000 Off - Save $1,000 on Your New Sunroom

$300 Gift Cards - Refer Your Friends and Family and Receive a Gift Card Worth Up To $300

Contact:

(303) 800-2129 (855) 386-4544

Mon-Thu: 9am - 4pm Fri: 9am - 3pm Sat & Sun: Closed

TBR® Inspection Report:

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RENEWAL BY ANDERSEN REVIEWS

Everything from the quote to the install was amazing! Very friendly people, excellent craftsmanship. The quote process was very simple and very informative, Maurice Walton did an excellent job in giving us all the data we could ask for on the windows, and showed a great demonstration. We decided to go through the windows while he was still there and he saved us even more money because he was able to get all the measurements the same day and had a partner assist him to ensure they both took the correct measurements the first time for quality assurance. The installers were very professional, took great care not to damage anything and to protect items inside the house. They were kind and worked very quickly. They also paid close attention to detail when doing the finishing touches. They explained everything and showed us how to properly operate and maintain the doors and windows. I will definitely recommend them to anyone who needs windows or doors replaced. Thank you all.

My project was to replace two living room, one bedroom, and kitchen windows. Production and installation were promised by mid to late May. It’s April 10th and my windows are installed. They were very clear about the process and what to expect. They exceeded those expectations all along the way. The installation crew was professional, courteous, efficient, and just flat out nice. This isn’t cheap. This product and installation is without a doubt worth it.

Jason Love was absolutely the best contact/salesman ever! He guided us through this project and helped ease any kind of stress that we had! Renewal By Andersen is the best!! Will and his two Ukrainian boys were amazing. We enjoyed Ted the drywall guy. Renewal By Andersen helped us achieve our vision of opening up the outside and bringing such beauty inside thank you thank you thank you.

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LIFETIME HOME REMODELING REVIEWS

Fantastic company! I had three windows and a patio sliding glass door replaced. From Sales Rep Paul to Installers Tim and Daniel, I found the process and information and work to be exceptional! To me, the Marvin products are the best! I highly recommend Lifetime and will continue to use them to replace the rest of my windows around my house.

Stefan was the installer and did a phenomenal job, he paid attention to detail and cleanliness. I highly recommend him and Lifetime, I selected Luxstone by Kohler and couldn’t be happier, it’s beautiful and Core Tech flooring to complement my new shower and tub.

Working with Lifetime from start to finish was a positive experience. Their communication was excellent on every level. The installers of my James Hardie siding arrived promptly each day and worked diligently, no standing around. They were courteous and professional in their interaction with me. Clean up was thorough. The team amazingly completed the work in 4 days in very cold conditions. The siding looks tremendous! I recommend Lifetime Home Remodeling 100%.

CHAMPION REPLACEMENT WINDOWS OF DENVER REVIEWS

We are very pleased with the way our “new” sunroom turned out. From start to finish our experience was terrific. Ryan, the sales rep, was always available when we had questions. And Justin, the installer, was very detail oriented when building our room. Whenever we had a question, he always said “I got you.” and he did. Thank you Champion for creating our 3 season room. The winds were quite strong coming from the north which was the impetus for adding windows to this area. We are now able to get many more days in this space.

We had a fantastic experience with our Champion Windows salesman, Mike. From the start, he made us feel completely comfortable and confident in both the product and the services offered. It was clear that Mike truly had our best interests at heart, and that level of honesty and care made all the difference. We couldn’t be happier with our decision to go with Champion. Highly recommend!

Jorge and his crew were great! Friendly and professional! Did a wonderful job and we absolutely love our new windows! We immediately felt the difference in temperature in the house, especially in the bedroom above the garage. Highly recommend!

TBR® Inspection Score Report

RENEWAL BY ANDERSEN Total Inspection Points: 119/120
Reviews Accuracy of 8.2K: 9
Acknowledgments: 10
Business Hours: 10
Business Images: 10
Complete Info: 10
Contact Info: 10
Current Evaluation: 10
Exact Services: 10
Legitimate Ratings: 10
Location Proximity: 10
Pricing: 10
Website Source: 10

TBR® Inspection Score Report

LIFETIME HOME REMODELING Total Inspection Points: 118/120
Current Evaluation: 9
Reviews Accuracy of 1.7K: 9
Acknowledgments: 10
Business Hours: 10
Business Images: 10
Complete Info: 10
Contact Info: 10
Exact Services: 10
Legitimate Ratings: 10
Location Proximity: 10
Social Media: 10
Website Source: 10

TBR® Inspection Score Report

CHAMPION REPLACEMENT WINDOWS OF DENVER Total Inspection Points: 117/120
Pricing: 9
Reviews Accuracy of 3.0K: 9
Website Source: 9
Acknowledgments: 10
Business Hours: 10
Business Images: 10
Complete Info: 10
Contact Info: 10
Current Evaluation: 10
Exact Services: 10
Legitimate Ratings: 10
Location Proximity: 10