20 Best Window Companies in Windsor, CO (2023 Reviews)
Are you thinking about upgrading your windows? Our guide to the top window installation companies can help you narrow down which one to pick.
We analyzed all the top-rated window companies in Windsor and selected the best 20 based on:
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Customer reviews
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Window installation expertise
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Popularity with home-owners like you
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Updated September 15, 2023
Why you can trust EcoWatch
A guide on the top window installation companies in Windsor may not seem like the most interesting article on the EcoWatch site, but trust us, windows impact your life more than you might think. Potential leaks or drafts from your windows can make your AC or heater work extra hard in the summer or winter.
Replacement windows improve the insulation in your home, not only making you and your family more comfortable during extreme temperatures, but also saving you money and helping the environment.
So if you're constructing a new home, renovating or changing out old windows in Windsor, this guide is the best place to get started.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in Windsor
The EcoWatch Reviews team researched several window companies in Windsor to find the top ones for our readers. The providers we've reviewed in this article scored best in our categories, including energy-efficient offerings, customer service, price, availability and more.

Window World
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EnergyStar Partner
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Lifetime warranty
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Quality of service will depend on your area
Window World is the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the window installation business, and it has become one of the most respected companies in Windsor.
It has established itself as a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsWindow World is an Energy Star partner with a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so be sure to ask your Window World representative when inquiring about services.
How much does Window World cost in Windsor?Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. The best way to know for sure is to request a free quote from the company.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Member of US Green Building Council
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Manufactures products in-house
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No lifetime warranty
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More expensive than competition
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This window installation company has been in business since 1995 and currently provides services to nearly every state except Mississippi and West Virginia. Hundreds of positive reviews on customer review websites back the company's reputation.
Andersen may be the company for you if you want one that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsA handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019. Not all of Andersen’s offerings are Energy Star certified, so make sure you mention that you want Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Windsor?Prices aren’t listed on Andersen’s website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can ask for a free quote on its website for more information about the cost.

Universal Windows Direct
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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Quality of service will depend on your area
Universal Windows Direct is a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has around 20 years of experience in the window installation sector. The company has a lot of glowing reviews from customers on online review websites.
It has established itself as a company that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct’s commitment to sustainability can be seen in its energy-efficient window offerings. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.
How much does Universal Windows Direct cost in Windsor?Even though prices are not readily available on Universal’s website, installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. The best way to know for sure is to request a free quote from the company.
Please note that the companies in this section are national, meaning the quality of customer service may vary depending on your local crew. We have tried to be unbiased and transparent by listing pros and cons for each provider.
More Window Companies in Windsor
Renewal by Andersen of Colorado Front Range
Longmont, CO-
Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Aluminum Window Frames
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Energy-Efficient Options
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Full-Service Installations
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Window Replacement
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Custom Window Designs
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Residential Windows
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Bay Windows
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Sliding Glass
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Double-Hung
Champion Replacement Windows of Ft. Collins
Loveland, CO-
Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Residential Windows
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Custom Window Designs
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Bay Windows
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Window Replacement
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Sliding Glass
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Double-Hung
Window World of Denver
Denver, CO-
Good Customer Service
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Educational Website
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Price Transparency
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Timely Service
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Free assessment
Services Offered
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Residential Windows
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Commercial Windows
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Window Replacement
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Sliding Glass
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Glass Showers
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Fast Delivery
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Aluminum Window Frames
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Custom Window Designs
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Stained Glass
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Double-Hung
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Bay Windows
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Energy-Efficient Options
Champion Replacement Windows of Denver
Denver, CO-
Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Sliding Glass
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Double-Hung
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Custom Window Designs
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Window Replacement
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Bay Windows
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Residential Windows
Window Nation
Aurora, CO-
Good Customer Service
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Educational Website
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Free assessment
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Price Transparency
Services Offered
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Double-Hung
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Custom Window Designs
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Window Replacement
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Residential Windows
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Stained Glass
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Sliding Glass
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Bay Windows
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Energy-Efficient Options
The Glass Guru
Loveland, CO-
Educational Website
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Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Window Replacement
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Custom Window Designs
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Stained Glass
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Glass Showers
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Sliding Glass
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Aluminum Window Frames
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Commercial Windows
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Tempered Glass
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Double-Hung
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Full-Service Installations
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Window Repair
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Residential Windows
Nex-Gen Windows & Doors
Fort Collins, CO-
Educational Website
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Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Double-Hung
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Sliding Glass
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Window Replacement
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Energy-Efficient Options
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Fast Delivery
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Custom Window Designs
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Residential Windows
Glass Doctor of Fort Collins
Fort Collins, CO-
Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Window Repair
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Sliding Glass
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Residential Windows
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Window Replacement
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Custom Window Designs
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Energy-Efficient Options
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Glass Showers
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Double-Hung
AllGuard Windows and Doors Fort Collins
Fort Collins, CO-
Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Fast Delivery
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Double-Hung
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Window Replacement
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Residential Windows
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Aluminum Window Frames
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Sliding Glass
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Energy-Efficient Options
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Custom Window Designs
Lomax Window & Door Co.
Fort Collins, CO-
Free assessment
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Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Double-Hung
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Residential Windows
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Aluminum Window Frames
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Sliding Glass
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Commercial Windows
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Energy-Efficient Options
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Window Replacement
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Custom Window Designs
Bellwether Windows, Siding, & Doors
Fort Collins, CO-
Timely Service
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Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Commercial Windows
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Fast Delivery
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Double-Hung
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Aluminum Window Frames
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Residential Windows
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Custom Window Designs
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Window Replacement
All American Glass and Screen Company
Loveland, CO-
Educational Website
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Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Fast Delivery
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Sliding Glass
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Glass Showers
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Window Repair
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Window Replacement
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Custom Window Designs
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Double-Hung
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Residential Windows
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Commercial Windows
Glass Doctor of Greeley
Greeley, CO-
Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Double-Hung
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Fast Delivery
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Glass Showers
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Commercial Windows
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Window Repair
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Custom Window Designs
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Residential Windows
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Window Replacement
3 Bidz Windows
Loveland, CO-
Educational Website
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Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Residential Windows
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Window Replacement
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Custom Window Designs
Window & Siding Outlet
Loveland, CO-
Educational Website
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Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Sliding Glass
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Window Replacement
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Custom Window Designs
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Residential Windows
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Commercial Windows
Wellspring Home Services
Fort Collins, CO-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Custom Window Designs
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Window Replacement
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Fast Delivery
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Residential Windows
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Glass Showers
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Double-Hung
Moffat Glass
Greeley, CO-
Educational Website
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Good Customer Service
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Timely Service
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Price Transparency
Services Offered
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Sliding Glass
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Residential Windows
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Custom Window Designs
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Double-Hung
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Window Replacement
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Full-Service Installations
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Glass Showers
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Commercial Windows
Home Services at The Home Depot
1100 Nickel Dr, CO-
Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
Services Offered
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Residential Windows
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Commercial Windows
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Window Replacement
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Custom Window Designs
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Glass Showers
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Fast Delivery
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Stained Glass
Greyrock Window & Door
Fort Collins, CO-
Free assessment
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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Window Replacement
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Custom Window Designs
Pro Glass & Paint LLP
Greeley, CO-
Educational Website
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Good Customer Service
Services Offered
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Window Replacement
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Commercial Windows
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Glass Showers
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Custom Window Designs
Calculate how much you can expect to pay for window installation and replacement in Windsor, CO using our customized window cost calculator.
Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.
How Installing Energy-Efficient Windows in Windsor Saves You Money
There are quite a few benefits of upgrading to energy-efficient windows. Some reasons you may want to consider making the change are the following:
- Save on power bills: After you switch to energy-efficient windows, you can see a reduction in your bills by about 12% since you'll require less energy to heat or cool your home.
- Better temperature control in your home: When you reside in a city like Windsor where the summers can be quite hot, you often need to rely on your air conditioner to keep your house cool. Energy-efficient windows can cut back on how much cool air is lost through your windows when cooling your home.
- Protect your investment: When your home is on the older side, your windows could also be outdated or damaged. Keeping your windows up to date is an important part of maintaining your property and its real estate value.
- Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
Estimated Cost of Window Replacement in Windsor
Windows come in various shapes, styles and purposes, so costs and services will differ remarkably based on several factors. Below, we describe the typical cost and services that you can get from window installers.
How Much Do New Windows Cost?
Generally, Windsor homeowners can anticipate their replacement window installations to range from $250 to $1,200. The average cost sits at approximately $600. Costs will vary considerably depending on your location, the current condition of your home, the quality of your products and the number of windows you need. A lot of window companies also offer replacement door installations and other add-ons like shutters, baths, coating and more. These extra services will increase your overall project costs.
It's important to keep in mind that windows with the best efficiency may cost more upfront but can save you hundreds of dollars by decreasing your energy bills. Investing in Energy Star certified windows can save Windsor homeowners $438+ a year when replacing single-pane windows.
Costs will also vary based on the material of your frame. Aluminum frames have the lowest price. They're sturdy, light and easy to maintain, but offer poor insulation. Vinyl frames are somewhat expensive and offer good insulation. Composite frames made with wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They're also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
There are generally two kinds of window replacement services: full-frame and pocket installations.
Full-frame installations involve replacing the complete window, including the trim, sill and frame. Full-frame installations are necessary when you want a new style or your window has significant rot. Full-frame installations are more involved and will increase overall costs. A pocket installation entails replacing a window without taking out the complete frame, which is usually less expensive than a full-frame installation.
Your window installation company should be able to help you choose which type of installation you need.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
How We Choose the Best Window Installers in Windsor
EcoWatch is different from other reviewers because we assess these companies through a sustainability lens. Along with energy efficiency, we reviewed each installer and ranked them based on the following methodology:
Service Area
This one is self-explanatory, but we've chosen to highlight window installation companies that serve Windsor so you can find the right window installation company near you.
Work Quality
When selecting new windows, the quality and range of services often plays just as important of a role in overall efficiency and performance as the brand of window you get. We do give window installers more points if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
Customer feedback is another super important review factor. If most customers don't have positive things to say about their experience with a certain window installation company, it won't be featured on EcoWatch.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers want to keep costs as low as possible. When analyzing the prices of providers, we awarded higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that give you lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a good track record in the industry. Window installation companies that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.
Windsor, CO Window Replacement FAQs
How much does window installation cost?
The national average cost of replacing a single window is about $600 but can range between $200 and $1,200, based on a variety of factors. The price is often influenced by the location of your property, the size of the window and the type and material of the window. Also, keep in mind that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills.
Which kind of window should I get?
A window's energy efficiency is affected by several factors, such as the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are often the most energy-efficient since they are certified by the U.S. Department of Energy.
What do window installation companies do?
Window installers travel to your home to remove your old windows and replace them with new ones. Some companies install products distributed by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation is finished.
Should I replace all my windows at the same time?
If your windows are greater than 20 years old, it's most likely time to replace all of them. At that point, they are usually less efficient, leakier and/or more damaged than new windows. Doing your windows all at the same time will involve less paperwork and less stress.