24 Best Window Replacement Companies in Westminster, CO (2023 Reviews)
Window Companies Near Me
If you're looking to get new windows, our guide to the best window installation companies can help.
We analyzed all the top window installers in Westminster and selected the top 24 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 guide on the top window replacement companies in Westminster may not seem like the most captivating article on the EcoWatch site, but trust us, windows impact your life more than you might think. If your house has traditional, outdated windows, your HVAC system could be working extra hard to heat or cool your house. This means higher electric bills.
That's also bad news for the environment, as the additional energy used by leaky windows increases your carbon footprint.
Efficient windows are of particular importance in Westminster, where the temperature varies throughout the year. According to Energy Star, switching to energy-efficient windows can save the average homeowner up to $448 per year.
Best Affordability
Window World
- Low prices relative to competitors
- Lifetime warranty
- Large serice area
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Manufactures products in-house
- Member of US Green Building Council
- Award-winning company
- No lifetime warranty
Best Warranty
Universal Windows Direct
- Wide variety of products and services
- Manufactures products in-house
- Lifetime warranty
- Some installations carried out by third-party contractors
Best Window Replacement Companies in Westminster
The EcoWatch Reviews team assessed many window providers across Westminster to narrow our list down to the top ones. We assessed the providers on energy-efficient offerings, price, coverage area, customer service, local experience and more.

Window World
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Low prices relative to competitors
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Lifetime warranty
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Large serice area
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Quality of service will depend on your area
Window World provides windows expertise in Westminster. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the windows industry, and it has established itself as one of the most respected companies in Westminster. Its reputation is backed by several positive reviews on customer review websites.
You may want to consider choosing Window World if you're looking for 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 WindowsThere are a wide variety of window types available from Window World, some of which are Energy Star products. 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 Westminster?Pricing information is not available on Window World's website because the cost of window replacement varies greatly depending on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. If you'd like more accurate information, you can receive a quote on the company's website.

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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Award-winning company
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No lifetime warranty
Renewal by Andersen has the best availability in Westminster. Andersen has been in the window installation business for about 27 years. Many 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 WindowsThere are a wide variety of window types available from Renewal by Andersen, some of which are Energy Star products. 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 Westminster?Andersen does not outline prices 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. If you'd like more accurate information, you can inquire about a quote on the company's website.

Universal Windows Direct
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Wide variety of products and services
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Manufactures products in-house
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Lifetime warranty
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Some installations carried out by third-party contractors
Universal Windows Direct provides the best warranty in Westminster. This window installation company has been in business since 2002 and currently provides services to 27 states nationwide.
It has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct is an Energy Star partner offering 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 mention that you want energy-efficient windows to your Universal representative when inquiring about services.
How much does Universal Windows Direct cost in Westminster?Universal doesn't have any cost information available 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. Requesting a free quote on its website is the best way to get more accurate pricing information.
Please note that the companies in this section are national, which means the quality of the service may depend on your local crew. We have tried to remain unbiased and transparent by listing pros and cons for every company.
More Window Replacement Companies in Westminster
Window World of Denver
Denver, CO-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Energy-Efficient Options
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Glass Showers
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Stained Glass
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Residential Windows
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Aluminum Window Frames
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Fast Delivery
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Commercial Windows
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Double-Hung
The Glass Guru
Arvada, CO-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Full-Service Installations
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Stained Glass
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Residential Windows
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Aluminum Window Frames
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Tempered Glass
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Double-Hung
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Commercial Windows
Five Seasons Windows and Doors
Denver, CO-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Energy-Efficient Options
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Glass Showers
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Stained Glass
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Residential Windows
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Double-Hung
Slade Glass Co.
Boulder, 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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Energy-Efficient Options
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Fast Delivery
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Commercial Windows
True View Windows & Glass
Westminster, CO-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Energy-Efficient Options
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Double-Hung
Colorado Window Source
Denver, CO-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Energy-Efficient Options
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Commercial Windows
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Double-Hung
United Windows & Siding
Wheat Ridge, 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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Residential Windows
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Fast Delivery
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
GCS Glass & Mirror
Aurora, 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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Glass Showers
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Tempered Glass
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Commercial Windows
Window Replacement Denver
Denver, 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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Residential Windows
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Fast Delivery
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
BlueBird Windows & Doors
Lafayette, CO-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Double-Hung
Lakewood Glass and Windows
Lakewood, CO-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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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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Fast Delivery
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Tempered Glass
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Double-Hung
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Commercial Windows
Mountain View Window & Door
Denver, CO-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Custom Window Designs
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Stained Glass
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Residential Windows
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Fast Delivery
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Commercial Windows
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Double-Hung
Reflection Windows & Doors
Denver, CO-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Glass Showers
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Custom Window Designs
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Full-Service Installations
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Residential Windows
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Commercial Windows
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Double-Hung
Clearwater Exteriors
Denver, CO-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Energy-Efficient Options
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Double-Hung
K&H Home Solutions
Arvada, 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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Energy-Efficient Options
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Double-Hung
Glass Doctor of Wheat Ridge
Wheat Ridge, CO-
Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Energy-Efficient Options
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Glass Showers
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Commercial Windows
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Double-Hung
KV Windows Inc.
Westminster, CO-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Commercial Windows
Smart Windows
Louisville, 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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Energy-Efficient Options
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Tempered Glass
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Double-Hung
Compass Glass Co.
Denver, 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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Glass Showers
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Commercial Windows
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Double-Hung
Louisville Glass Inc.
Louisville, 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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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
Window Replacement & Installation Co.
Denver, 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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Residential Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
Commercial Storefront Glass Denver
1555 Larimer St, CO-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Full-Service Installations
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Residential Windows
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Custom Window Designs
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Commercial Windows
Pioneer Home Solutions
Denver, CO-
Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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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
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Aluminum Window Frames
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Commercial Windows
DMD Window & Door
Wheat Ridge, 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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Energy-Efficient Options
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Double-Hung
How Installing Energy-Efficient Windows in Westminster Saves You Money
Upgrading to energy-efficient windows can help improve the comfort of your home and help you save on energy bills. Here are more details about how switching out your windows could benefit you:
- Save money on energy bills: Because energy-efficient windows lower the amount of energy needed to heat or cool your home, they can help you save around $448 annually on your energy bills in Westminster.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out damaging UV rays, reducing fading of your furniture, carpet and other valuables.
- Decrease your carbon footprint: By using less energy once you switch to Energy Star certified windows, you'll also be lowering your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its real estate value, particularly if you have an older home.
Estimated Cost of Window Replacement in Westminster
Each window installer offers varying services and has different costs depending on a few factors.
How Much Do New Windows Cost?
Generally, Westminster homeowners can anticipate their replacement window installations to range from $250 to $1,200. The most common installations sit at about $600. This is because of the fact that the cost of window installations are based on several 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.
Bear in mind that energy-efficient windows may have a higher price, but Energy Star predicts the upgrade will save you between $101 and $583 per year when replacing single-pane windows and between $27 and $197 per year when replacing double-pane, clear glass windows. These savings vary depending on your local climate, energy rates and individual home characteristics.
How much your window installation costs will also vary depending on the kind of window material you choose for the frames. Wood windows are usually the most expensive, though it depends if they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are more efficient.
What Services do Window Installers Offer?
In general, there are two kinds of window replacement services companies offer: full-frame and pocket installations.
A full-frame installation is a replacement of the full window. It involves taking out the old window, the windowsill, and the exterior and interior trim. It can also involve extra materials, including insulation and drip edges, which raise the total 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. A pocket installation involves replacing a window without removing the whole frame, which is usually less expensive than a full-frame installation.
If you're hiring a reputable window installation company, your company can recommend the best type for your project. In Westminster, the decision will mostly be based on the efficiency of your home and the age of your existing frames.
Best Affordability
Window World
- Low prices relative to competitors
- Lifetime warranty
- Large serice area
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Manufactures products in-house
- Member of US Green Building Council
- Award-winning company
- No lifetime warranty
Best Warranty
Universal Windows Direct
- Wide variety of products and services
- Manufactures products in-house
- Lifetime warranty
- Some installations carried out by third-party contractors
How We Choose the Best Window Installers in Westminster
The EcoWatch Reviews team differs from most reviewers since we evaluate these companies through a sustainability lens. We have reviewed the best window installers in Westminster primarily based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows can cut your electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
This one is self-explanatory, but we've chosen to highlight window installers that serve Westminster so you can find the right window installation company near you.
Work Quality
When choosing new windows, the quality and breadth of services often plays just as important of a role in overall efficiency and performance as the brand you opt for. We do give window installers higher marks if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
Customer feedback is another very important review factor. If most customers don't have nice feedback 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 try to keep costs as low as possible. When analyzing providers' prices, we gave higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed, windows are a serious investment, so you'll want to be certain that investment is well protected. Window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have a proven 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.
Westminster, CO Window Replacement FAQs
What is the average cost to install windows?
The typical cost to install one window ranges between $450 and $650. There are many factors that influence the cost, which include the materials used in designing the windows, your property's location, the number of windows, local labor costs, styles and sizes of windows and how energy-efficient the windows are.
What kind of window is the best for energy efficiency?
Generally, double-pane windows will be more efficient than single-pane windows and windows that do not open will be more efficient than windows that do. To be sure you'll have the most energy-efficient windows, look for models that have the blue Energy Star certification — that means they're certified energy-efficient by the U.S. Department of Energy.
Can I install my own windows?
While it is possible to install your own windows, doing so requires a lot of time and experience with home improvement projects. Hiring a professional can help guarantee that the installation is done properly and that you can avoid spending the time and effort of doing it yourself.
How long does it usually 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 need to have a lot of windows installed.
How often do you need to replace your windows?
Windows generally last 20 to 30 years, but anytime you notice damage on your windows, it's a good idea to have them checked by an expert to see if they need any repairs or replacements.