27 Best Window Replacement Companies in Johnstown, CO (2023 Reviews)
Window Companies Near Me
If you're thinking about getting new windows, our list of the top window installation companies can help.
We analyzed all the top window installers in Johnstown and selected the top 27 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated May 04, 2023
Why you can trust EcoWatch
A review of the top window installation companies in Johnstown may not seem like the most riveting article on EcoWatch, but trust us, windows have more of an impact on your life than you might think. During the winter months, the last thing you want is your heat to leak out of your outdated, drafty windows.
Replacement windows improve your home's insulation, not only making you and your family more comfortable during extreme temperatures, but also saving you some money and helping the environment.
So if you're constructing a new home, renovating or changing out old windows in Johnstown, this is the best place to get started.
Best Overall
Renewal by Andersen
- Manufactures products in-house
- Member of US Green Building Council
- Great industry reputation
- No lifetime warranty
Best Affordability
Window World
- Large serice area
- Great industry reputation
- Lifetime warranty
- Quality of service will depend on your area
Best Warranty
Universal Windows Direct
- Wide variety of products and services
- Makes charitable contributions
- Lifetime warranty
- Quality of service will depend on your area
Best Window Replacement Companies in Johnstown
The EcoWatch team assessed many window installation companies across Johnstown to narrow our list down to the best ones. We assessed the installers based on their energy-efficient offerings, local experience, customer service, coverage area, price and more.

Renewal by Andersen
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Manufactures products in-house
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Member of US Green Building Council
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Great industry reputation
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No lifetime warranty
Renewal by Andersen offers the best availability in Johnstown. This window installation company has been in business since 1995 and currently serves nearly every state except Mississippi and West Virginia. The provider has plenty of positive reviews from customers on online review websites.
It has established itself as a company 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 windows are Energy Star certified, so be sure to mention that you're interested in Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Johnstown?Andersen doesn't have any pricing information listed on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Requesting a free quote on its website is the best way to get more accurate pricing information.

Window World
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Large serice area
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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 provider has 27 years of experience in the window installation industry, and it has proved to be one of the best companies in Johnstown. Many positive reviews from customers online back the company's reputation.
You may want to consider choosing Window World if you're looking for a installer 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 caters to eco-conscious consumers by providing 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 Johnstown?Prices aren't listed on Window World's website, but it's known for offering some of the most affordable window installations around. If you'd like to know for sure, you can ask for a quote on the company's website.

Universal Windows Direct
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Wide variety of products and services
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Makes charitable contributions
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Lifetime warranty
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Quality of service will depend on your area
Universal Windows Direct has the best warranty in Johnstown. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has been in the window business for about 20 years. Its reputation is backed by all the positive reviews on customer 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 WindowsThere are a wide variety of window types available from Universal Windows Direct, some of which are Energy Star products. 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 Johnstown?While pricing is not 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 ask for a free quote from the company.
We have tried to be unbiased and transparent by mentioning pros and cons for every installer. Additionally, any partnerships do not influence our reviews.
More Window Replacement Companies in Johnstown
The Glass Guru
Loveland, CO-
Price Transparency
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Educational Website
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Award-Winning
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Free assessment
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Good Customer Service
Services Offered
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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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Glass Showers
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Full-Service Installations
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Aluminum Window Frames
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Residential Windows
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Tempered Glass
Bellwether Windows, Siding, & Doors
Fort Collins, CO-
Award-Winning
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Educational Website
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Price Transparency
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Timely Service
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Free assessment
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Good Customer Service
Services Offered
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Aluminum Window Frames
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Commercial Windows
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Custom Window Designs
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Glass Showers
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Fast Delivery
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Residential Windows
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Double-Hung
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Stained Glass
Budget Blinds of Fort Collins
Fort Collins, CO-
Good Customer Service
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Free assessment
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Price Transparency
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Educational Website
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Timely Service
Services Offered
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Aluminum Window Frames
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Residential Windows
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Fast Delivery
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Energy-Efficient Options
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Glass Showers
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Custom Window Designs
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Commercial Windows
Slade Glass Co.
Boulder, 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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Aluminum Window Frames
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Custom Window Designs
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Glass Showers
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Sliding Glass
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Fast Delivery
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Commercial Windows
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Energy-Efficient Options
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Residential Windows
The Glass Guru
Greeley, CO-
Good Customer Service
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Free assessment
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Price Transparency
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Award-Winning
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Educational Website
Services Offered
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Full-Service Installations
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Commercial Windows
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Residential Windows
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Double-Hung
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Custom Window Designs
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Tempered Glass
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Aluminum Window Frames
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Sliding Glass
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Stained Glass
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Glass Showers
Slade Glass Co.
Longmont, CO-
Educational Website
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Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Glass Showers
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Fast Delivery
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Energy-Efficient Options
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
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Custom Window Designs
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Sliding Glass
Ankmar Garage Door
Loveland, CO-
Good Customer Service
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Award-Winning
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Free assessment
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Price Transparency
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Timely Service
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Educational Website
Services Offered
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Double-Hung
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Commercial Windows
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Custom Window Designs
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Full-Service Installations
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Residential Windows
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Fast Delivery
Ameritech Windows
Boulder, CO-
Price Transparency
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Award-Winning
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Timely Service
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Good Customer Service
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Educational Website
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Free assessment
Services Offered
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Commercial Windows
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Bay Windows
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Double-Hung
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Energy-Efficient Options
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Residential Windows
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Custom Window Designs
Rocky Mountain Glass & Shower LLC
Ault, CO-
Educational Website
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Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Tempered Glass
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Custom Window Designs
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Double-Hung
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Energy-Efficient Options
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Commercial Windows
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Residential Windows
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Glass Showers
Budget Blinds of Longmont and Surrounding Areas
Berthoud, CO-
Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Glass Showers
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Residential Windows
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Commercial Windows
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Fast Delivery
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Aluminum Window Frames
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Custom Window Designs
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Energy-Efficient Options
Soderburg Roofing & Contracting
Greeley, CO-
Award-Winning
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Price Transparency
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Good Customer Service
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Educational Website
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Free assessment
Services Offered
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Commercial Windows
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Residential Windows
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Custom Window Designs
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Double-Hung
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Fast Delivery
BlueBird Windows & Doors
Lafayette, CO-
Educational Website
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Free assessment
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Good Customer Service
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Award-Winning
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Price Transparency
Services Offered
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Sliding Glass
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Commercial Windows
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Custom Window Designs
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Residential Windows
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Double-Hung
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Bay Windows
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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Double-Hung
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Glass Showers
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Custom Window Designs
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Commercial Windows
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Residential Windows
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Sliding Glass
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Full-Service Installations
Black's Glass
Fort Collins, CO-
Good Customer Service
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Timely Service
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Educational Website
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Price Transparency
Services Offered
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Sliding Glass
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Fast Delivery
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Commercial Windows
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Double-Hung
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Glass Showers
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Residential Windows
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Custom Window Designs
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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Custom Window Designs
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Commercial Windows
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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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Energy-Efficient Options
Hillcrest Glass
Longmont, CO-
Price Transparency
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Good Customer Service
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Educational Website
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Free assessment
Services Offered
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Glass Showers
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Custom Window Designs
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Residential Windows
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Full-Service Installations
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Double-Hung
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Sliding Glass
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Commercial Windows
AllGuard Windows and Doors Fort Collins
Fort Collins, CO-
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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Fast Delivery
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Aluminum Window Frames
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Residential Windows
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
Anything Glass
Fort Collins, CO-
Price Transparency
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Free assessment
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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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Glass Showers
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Full-Service Installations
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Double-Hung
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Commercial Windows
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Custom Window Designs
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Residential Windows
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Sliding Glass
Nex-Gen Windows & Doors
Fort Collins, CO-
Free assessment
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Educational Website
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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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Fast Delivery
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Custom Window Designs
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Energy-Efficient Options
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Double-Hung
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Residential Windows
Home Services at The Home Depot
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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Residential Windows
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Fast Delivery
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Commercial Windows
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Sliding Glass
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Bay Windows
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Stained Glass
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Glass Showers
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Custom Window Designs
All American Glass and Screen Company
Loveland, 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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Sliding Glass
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Custom Window Designs
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Fast Delivery
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Commercial Windows
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Double-Hung
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Glass Showers
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Residential Windows
Smart Windows
Louisville, 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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Tempered Glass
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Energy-Efficient Options
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Residential Windows
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Bay Windows
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Custom Window Designs
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Sliding Glass
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Double-Hung
T Bare Roofing
Greeley, CO-
Good Customer Service
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Free assessment
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Educational Website
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Timely 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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Residential Windows
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Custom Window Designs
Flatirons Tint and Clear Bra
Boulder, 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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Custom Window Designs
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Residential Windows
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Double-Hung
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Fast Delivery
Louisville Glass Inc.
Louisville, 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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Custom Window Designs
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Double-Hung
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Aluminum Window Frames
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Commercial Windows
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Residential Windows
Roof Source LLC - Colorado
Mead, CO-
Free assessment
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Price Transparency
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Good Customer Service
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Timely Service
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Educational Website
Services Offered
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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
Glass Doctor of Fort Collins
Fort Collins, CO-
Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Energy-Efficient Options
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Double-Hung
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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
How Installing Energy-Efficient Windows in Johnstown Saves You Money
By upgrading to energy-efficient windows, you can benefit in several ways, such as:
- Protect your valuables from fading: When you switch to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will be protected from fading because of their ability to filter out damaging UV rays.
- Save money on energy bills: According to the Department of Energy, heat gained or lost through windows accounts for about 25-30% of residential energy use. Switching to energy-efficient models can help decrease how much you have to pay, therefore saving you about 12% more on your bills.
- Reduce your carbon footprint: You can reduce your carbon footprint by about 12% once you install Energy Star certified windows. In Johnstown, that's about 460 pounds per year on average.
- Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes usually have windows that are outdated, drafty or potentially even damaged in some way. Upgrading your windows could help increase the value of your property if you decide to sell.
Estimated Cost of Window Replacement in Johnstown
When considering window installation, each company offers different services and costs. Let's go over some average costs and services.
How Much Do New Windows Cost?
The average cost to install a single window is about $600 but can range anywhere from $200 to $1,200. These estimates are based on the specifics of your installation, such as size, material, the location of your home, number of windows, type and more.
Whether or not you opt for energy-efficient windows is another factor that will affect the cost. These will typically cost more than other windows, but on the other hand, you can save about $438 a year on your energy bills in Johnstown.
Asking for free quotes from several providers is the best way to figure out which one is right for you.
What Services do Window Installers Offer?
In general, there are two types of window replacement services you can get: full-frame and pocket installations.
Full-frame installations are necessary when you want to change the style of your windows or your window has significant deterioration. With this service, your installers will replace the complete window, including the trim, sill and frame. Pocket installations (or retrofits) entail installing a new window within its existing frame, which makes pocket installations less labor-intensive and costly. However, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.
If you're still debating which kind of installation you should get, you can ask your installer and get their recommendation. The decision mostly is influenced by the age of your window frames and if there's any damage present.
Best Overall
Renewal by Andersen
- Manufactures products in-house
- Member of US Green Building Council
- Great industry reputation
- No lifetime warranty
Best Affordability
Window World
- Large serice area
- Great industry reputation
- Lifetime warranty
- Quality of service will depend on your area
Best Warranty
Universal Windows Direct
- Wide variety of products and services
- Makes charitable contributions
- Lifetime warranty
- Quality of service will depend on your area
How We Choose the Best Window Installers in Johnstown
The EcoWatch Reviews team is different from other reviewers because we examine these companies through a sustainability lens. We have assessed the top window installers in Johnstown primarily based on their energy efficient offerings, as it's what's best for the environment and for you as a homeowner. Energy-efficient windows can cut your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
Because this is a guide for Johnstown, we paid more attention to companies that cover the city. There are certainly other reputable providers that didn't make our list because of the low odds that they would serve the average homeowner in Johnstown.
Work Quality
When selecting new windows, the quality and breadth of services often plays just as important of a role in insulation and performance as the brand you opt for. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent online reviews to find the companies with the most consistent customer satisfaction. Customer satisfaction may be the factor we place the most value on, as it indicates the quality of services across nearly every category, including quality of parts, warranty, professionalism, quality of installation, cost and more.
Cost
Cheaper windows don't necessarily mean better windows, but we know many of our readers try to keep costs low when possible. When analyzing the prices of providers, we awarded higher scores 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 be certain that investment is protected. 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 been in the industry for a while. Window installers that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.
Johnstown, CO Window Replacement FAQs
How much does a window install cost?
The national average cost to replace one window is around $600 but can range between $200 and $1,200, based on a variety of factors. The price is typically dependent on the size of the window, the location of your property and the type and material of the window. Also, bear in mind that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.
What kind of window is the best for energy efficiency?
A window's energy efficiency depends on a variety of factors, including the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are usually the most energy-efficient and are certified by the U.S. Department of Energy.
Can you install your own windows?
If you're handy and have experience with installing a replacement window, it's possible to install your own windows. But if you don't have the time or experience, we don't recommend trying it.
How long does it take to install windows?
Each window takes around 30 minutes to install depending on the kind of window. However, the window installation can take two days or more if you have a lot of windows that have to be installed.
Should I replace my windows all 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. Replacing your windows all at once will involve less paperwork and less stress.