20 Best Window Companies in Milliken, CO (2023 Reviews)
If you're thinking about getting new windows, our guide to the best window installation companies can help.
We analyzed all the top-rated window companies in Milliken 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 review of the top window installation companies in Milliken may not seem like the most interesting article on EcoWatch, but trust us, windows have a more direct impact on your life than you might think. If your windows are drafty or damaged, you could be sending 25-30% of your house's heat or cool air out of them.
That's bad for both your wallet and the environment, but one of the best window installation companies can help with that.
Unlike other review sites, EcoWatch ranks window companies based on energy efficiency while also balancing cost, customer satisfaction and service area.
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 Milliken
The EcoWatch Reviews team researched dozens of companies that serve the Milliken area to find the best window installation companies that fit our standards. The installers in this article scored best in our review categories, such as energy-efficient offerings, local expertise, price, availability, customer service 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 has windows expertise in Milliken. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This provider has 27 years of experience in the window installation industry, and it has become one of the best companies in Milliken. Hundreds of positive reviews from customers online back the provider's reputation.
It 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’s commitment to sustainability shows in its energy-efficient window offerings. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Milliken?Prices aren’t mentioned on Window World’s website, but it's known for offering some of the most affordable window installations around. The best way to know for sure is to receive 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 has the best availability in Milliken. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This provider has 27 years of experience in the window installation industry, and it has become one of the best companies in Milliken. Hundreds of positive reviews from customers online back the provider's reputation.
It 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 WindowsRenewal by Andersen’s commitment to sustainability shows in its energy-efficient window offerings. A 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.
How much does Renewal by Andersen cost in Milliken?Prices aren’t mentioned 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. The best way to know for sure is to receive a free quote from the company.

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 offers the best warranty in Milliken. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This provider has 20 years of experience in the windows business, and it has proved to be one of the best companies in the business. The provider has hundreds of glowing reviews from customers online.
Universal may be the company for you if you want one that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsThe 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. Not all of Universal’s offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.
How much does Universal Windows Direct cost in Milliken?Universal does not outline prices on its website, but 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. For more accurate information on the cost, you can get a quote from the company.
We've recommended installers with good reputations, but bear in mind that some national companies have independently owned locations in Milliken, so the quality of service may differ depending on your local crew. We have tried to be unbiased and transparent by including pros and cons for each company we reviewed.
More Window Companies in Milliken
Renewal by Andersen of Colorado Front Range
Longmont, CO-
Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Full-Service Installations
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Window Replacement
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Custom Window Designs
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Sliding Glass
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Double-Hung
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Aluminum Window Frames
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Bay Windows
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Residential Windows
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Energy-Efficient Options
Champion Replacement Windows of Ft. Collins
Loveland, CO-
Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Window Replacement
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Sliding Glass
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Bay Windows
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Double-Hung
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Custom Window Designs
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Residential Windows
Window World of Denver
Denver, CO-
Price Transparency
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Good Customer Service
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Educational Website
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Timely Service
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Free assessment
Services Offered
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Window Replacement
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Sliding Glass
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Stained Glass
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Custom Window Designs
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Commercial Windows
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Double-Hung
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Fast Delivery
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Energy-Efficient Options
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Aluminum Window Frames
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Residential Windows
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Glass Showers
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Bay Windows
Champion Replacement Windows of Denver
Denver, CO-
Price Transparency
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Free assessment
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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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Double-Hung
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Custom Window Designs
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Sliding Glass
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Bay Windows
Window Nation
Aurora, 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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Double-Hung
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Sliding Glass
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Bay Windows
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Custom Window Designs
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Stained Glass
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Residential Windows
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Energy-Efficient Options
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Window Replacement
Glass Doctor of Greeley
Greeley, CO-
Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Window Repair
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Window Replacement
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Fast Delivery
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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
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Glass Showers
3 Bidz Windows
Loveland, CO-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Window Replacement
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Residential Windows
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Custom Window Designs
Custom Exteriors
Berthoud, CO-
Price Transparency
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Free assessment
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Timely Service
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Good Customer Service
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Educational Website
Services Offered
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Window Replacement
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Commercial Windows
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Sliding Glass
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Custom Window Designs
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Fast Delivery
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Residential Windows
Pro Glass & Paint LLP
Greeley, CO-
Good Customer Service
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Educational Website
Services Offered
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Commercial Windows
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Custom Window Designs
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Glass Showers
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Window Replacement
Moffat Glass
Greeley, CO-
Price Transparency
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Timely Service
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Educational Website
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Good Customer Service
Services Offered
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Sliding Glass
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Custom Window Designs
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Double-Hung
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Commercial Windows
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Full-Service Installations
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Residential Windows
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Window Replacement
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Glass Showers
Window & Siding Outlet
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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Custom Window Designs
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Window Replacement
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Commercial Windows
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Residential Windows
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Sliding Glass
All American Glass and Screen Company
Loveland, CO-
Free assessment
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Price Transparency
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Educational Website
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Good Customer Service
Services Offered
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Fast Delivery
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Residential Windows
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Sliding Glass
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Custom Window Designs
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Glass Showers
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Window Repair
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Commercial Windows
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Double-Hung
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Window Replacement
Front Range Siding & Remodeling Co.
Berthoud, CO-
Price Transparency
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Educational Website
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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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Window Replacement
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Custom Window Designs
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Double-Hung
Home Services at The Home Depot
Longmont, CO-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Window Replacement
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Fast Delivery
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Stained Glass
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Residential Windows
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Commercial Windows
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Glass Showers
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Bay Windows
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Custom Window Designs
The Glass Guru
Loveland, CO-
Good Customer Service
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Free assessment
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Price Transparency
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Educational Website
Services Offered
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Double-Hung
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Sliding Glass
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Tempered Glass
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Residential Windows
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Window Repair
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Aluminum Window Frames
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Stained Glass
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Custom Window Designs
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Glass Showers
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Window Replacement
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Commercial Windows
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Full-Service Installations
Bellwether Windows, Siding, & Doors
Fort Collins, CO-
Educational Website
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Price Transparency
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Good Customer Service
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Timely Service
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Free assessment
Services Offered
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Aluminum Window Frames
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Residential Windows
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Commercial Windows
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Custom Window Designs
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Fast Delivery
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Double-Hung
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Window Replacement
Lomax Window & Door Co.
Fort Collins, 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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Commercial Windows
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Custom Window Designs
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Double-Hung
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Energy-Efficient Options
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Window Replacement
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Aluminum Window Frames
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Residential Windows
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Sliding Glass
Josh Brooks Construction and Renovation
Longmont, CO-
Price Transparency
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Timely Service
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Educational Website
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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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Stained Glass
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Double-Hung
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Aluminum Window Frames
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Window Replacement
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Glass Showers
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Fast Delivery
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Custom Window Designs
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Commercial Windows
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Energy-Efficient Options
WestPro | Roofing, Siding, Windows
Longmont, 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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Fast Delivery
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Commercial Windows
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Window Replacement
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Custom Window Designs
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Residential Windows
Nex-Gen Windows & Doors
Fort Collins, CO-
Free assessment
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Double-Hung
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Fast Delivery
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Custom Window Designs
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Sliding Glass
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Energy-Efficient Options
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Window Replacement
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Residential Windows
Calculate how much you can expect to pay for window installation and replacement in Milliken, 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 Milliken Saves You Money
By upgrading to energy-efficient windows, you can enjoy several benefits, such as:
- Save on energy bills: Because energy-efficient windows lower the amount of energy needed to heat or cool your home, the switch can help you save around $457 annually on your energy bills in Milliken.
- Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its real estate value, especially if you have an older home.
- Better temperature control in your home: Energy-efficient windows can reduce how much cool air is lost through your windows when cooling your home.
- Decrease your carbon footprint: Because energy-efficient windows improve the insulation in your home, you can lower your carbon footprint by about 12%, according to Energy Star.
Estimated Cost of Window Replacement in Milliken
Let's take a look at the cost of installing new windows and the types of services you may need for your home.
How Much Do New Windows Cost?
Though the average to replace one window is around $600, it can range anywhere from $200 to $1,200. This is because of the fact that window installations are based on a variety of factors specific to your home, including the size, material and number of windows you need to replace, as well as the location of your property.
It's also worth noting that energy-efficient windows will cost more upfront, but Energy Star predicts that upgrading the windows on your Milliken home translates to an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. The amount of money you'll save by installing energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.
We advise requesting free quotes from multiple window installation companies to find the one that works best for you.
What Services do Window Installers Offer?
There are generally two types of window installation services: full-frame and pocket installations.
A full-frame installation is a total window replacement. It involves taking out the old window, the windowsill, and the exterior and interior trim. It can also involve extra materials, like insulation and drip edges, which increase the overall cost of the project. It's also worth noting that it's not uncommon for homeowners to have to touch up the paint surrounding the window after a full-frame installation. Pocket installations are simpler and won't carry as large a bill because they entail simply replacing the window within its existing frame. But if the frame has any damage, you may need a full-frame installation instead.
Your window installation company will be able to help you figure out what's best for your needs. In Milliken, the decision will mostly be based on how old your windows are and if there's any damage. Wood can decay if not properly maintained over the years, so it's good to have a professional check your frames and window sills.
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 Milliken
The EcoWatch Reviews team differs from other reviewers because we're examining these companies through a sustainability lens. Along with energy efficiency, we evaluated window companies all across the state 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 a wide variety of states and cities so you can find the right window installation company near you.
Work Quality
We're certain that you're looking for professionals who do a great job installing windows. We've vetted each installer featured on this list to make sure its contractors are well-qualified and that the company has received lots of positive customer feedback to vouch for its service.
Customer Reviews
Customer feedback is another very important review factor. If most customers don't have nice things to say about their experience with a certain window installation company, it won't be featured on EcoWatch.
Cost
Cheaper windows don't necessarily mean better windows, but we know many of our readers want to keep costs low when possible. When analyzing providers' prices, we awarded higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed previously, windows are a considerable investment, so you'll want to make sure that investment is well protected. Window installation companies that offer 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.
Milliken, CO Window Replacement FAQs
How much does window installation cost?
The typical cost to replace a single window ranges between $450 and $650. There are many factors that influence how much it costs, which include local labor costs, your property's location, the materials used in designing the windows, styles and sizes of windows, how energy-efficient the windows are and the number of windows.
What type of window is the best for energy efficiency?
A window's energy efficiency depends on several factors, including the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are usually the most energy-efficient and are certified by the U.S. Department of Energy.
When do I have to use a window installation company?
Unless you have experience with home improvement projects and have the time to replace your own windows, we recommend hiring a professional installer. The process of installing windows is quite involved and can take anywhere from four to six hours for a single window. Although it's tempting to try to save money by doing it yourself, hiring a professional is a faster, more efficient and safer alternative.
How often do you need to replace your windows?
Windows generally have a lifespan of around 20 to 30 years, but anytime you see damage on your windows, it's a good idea to have them looked at by an expert to see if they are in need of a repair or replacement.
Should I replace my windows all at once?
If your windows are more than 20 years old, you probably need to replace all of them. At that point, they are usually less efficient, draftier and/or more damaged than new windows. Replacing your windows all at once will involve less paperwork and less time.