20 Best Window Companies in Westminster, CO (2024 Reviews)

Are you looking to replace your windows? Our list of the top window installation companies can help you narrow down which one to choose.

We analyzed all the top-rated window companies in Westminster and selected the best 20 based on:

  • Customer reviews
  • Window installation expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated May 20, 2024

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

The EcoWatch Reviews team is all about finding solutions for eco-conscious homeowners in Westminster. During the winter months, the last thing you want is your heat to leak out of your drafty windows.

Installing efficient windows on your house can help you save money each month on your power bills — and you can help the environment as well.

So if you’re building a new home, renovating or changing out old windows in Westminster, this is the best place to get started.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house
Buy One Window, Get One 40% OFF
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Buy 2 Windows, Get 2 Free
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best Window Installation & Replacement Companies in Westminster

The EcoWatch Reviews team examined dozens of installers in Westminster to find the best window installation companies for our readers. We assessed the providers based on energy-efficient offerings, price, local experience, coverage area, customer service and more.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Quality of service will depend on your area

Window World has windows expertise in Westminster. Window World has been in the window installation business for around 27 years. The provider has a lot of glowing reviews from customers online.

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 Windows

Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World’s offerings are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.

How much does Window World cost in Westminster?

Window World does not display prices on its website, but it's known for offering some of the most affordable window installations around. You can ask for a free quote on its website for more information about pricing.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen has the best availability in Westminster. Andersen has been in the window installation business for around 27 years. The provider has a lot of glowing reviews from customers online.

You may want to consider choosing Andersen if you're looking for 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 Windows

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. Not all of Andersen’s offerings are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.

How much does Renewal by Andersen cost in Westminster?

Andersen does not display 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. You can ask for a free quote on its website for more information about pricing.

We strive to be unbiased and transparent by listing pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.

More Window Companies in Westminster

Renewal by Andersen Window Replacement

Denver, CO
4.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Bay Windows
  • Service icon Vinyl Frames
  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: http://renewalbyandersendenver.com/
Address: 1401 W Bayaud Ave #7, Denver, CO 80223
Phone: (720) 263-7039

Champion Replacement Windows of Denver

Denver, CO
4.4
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Double-Hung
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Glass Doors

Website: https://www.championwindow.com/Denver/
Address: 10035 E 40th Ave Suite 400, Denver, CO 80238
Phone: (303) 800-2129

Champion Replacement Windows of Ft. Collins

Loveland, CO
4.5
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Double-Hung
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Glass Doors

Website: https://www.championwindow.com/Ft-Collins/
Address: 5850 Byrd Dr, Loveland, CO 80538
Phone: (970) 744-2604

Power Home Remodeling

Centennial, CO
4.4
★★★★★
  • Pros icon Good Customer Service

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation

Website: https://powerhrg.com/
Address: 7304 S Joliet St #100, Centennial, CO 80112
Phone: (303) 357-2484

Window World of Denver

Denver, CO
4.5
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Triple Pane Glass
  • Service icon Bay Windows

Website: https://www.windowworldcolorado.com/
Address: 480 E 76th Ave Bldg 5E, Denver, CO 80229
Phone: (303) 574-9594

DaBella

Denver, CO
4.5
★★★★★
  • Pros icon Timely Service
  • Pros icon Good Customer Service

Services Offered

  • Service icon Vinyl Frames
  • Service icon Glass Doors
  • Service icon Double-Hung
  • Service icon Window Replacement/Installation

Website: https://dabella.us/location/colorado/
Address: 6600 E Hampden Ave, Denver, CO 80224
Phone: (720) 619-8704

Window Nation

Aurora, CO
3.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Bay Windows
  • Service icon Custom Window Designs
  • Service icon Window Replacement/Installation
  • Service icon Double-Hung
  • Service icon Energy-Efficient Options
  • Service icon Glass Doors

Website: https://www.windownation.com/denver-window-replacement/
Address: 2450 Airport Blvd, Aurora, CO 80011
Phone: (720) 409-0170

Colorado Glass and Mirror LLC

Denver, CO
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Mirrors
  • Service icon Window Repair
  • Service icon Glass Showers
  • Service icon Window Replacement/Installation
  • Service icon Custom Glass

Website: https://mycoloradoglass.com/
Address: 1400 W 70th Ave, Denver, CO 80221
Phone: (303) 477-0082

Acorn Glass

Wheat Ridge, CO
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Window Repair
  • Service icon Glass Showers
  • Service icon Mirrors

Website: https://www.acornglasswheatridge.com/
Address: 9005 W 44th Ave, Wheat Ridge, CO 80033
Phone: (303) 420-0223

DMD Window & Door

Wheat Ridge, CO
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Custom Window Designs
  • Service icon Wood Frames
  • Service icon Glass Doors
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames

Website: https://www.dmdbuilders.com/
Address: 4251 Kipling St #190, Wheat Ridge, CO 80033
Phone: (303) 757-2721

Gravina's Window Center of Littleton

Denver, CO
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Wood Frames
  • Service icon Double-Hung
  • Service icon Energy-Efficient Options
  • Service icon Custom Glass
  • Service icon Fiberglass Frames
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: https://windowsdenver.com/
Address: 1500 W 38th Ave, Denver, CO 80211
Phone: (303) 562-1586

BlueBird Windows & Doors

Lafayette, CO
4.9
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Energy-Efficient Options

Website: https://www.gobluebirdco.com/
Address: 1200 Diamond Cir Unit J, Lafayette, CO 80026
Phone: (303) 810-2888

Glass Doctor of Wheat Ridge

Wheat Ridge, CO
4.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Window Repair
  • Service icon Custom Glass
  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Glass Repair
  • Service icon Mirrors

Website: https://glassdoctor.com/wheat-ridge
Address: 10790 W 50th Ave Ste 800, Wheat Ridge, CO 80033
Phone: (303) 792-8225

United Windows & Siding

Wheat Ridge, CO
4.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Vinyl Frames
  • Service icon Double-Hung
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Energy-Efficient Options

Website: https://www.unitedwindowsandsiding.com/
Address: 12090 Ridge Rd Unit B, Wheat Ridge, CO 80033
Phone: (720) 535-4767

Rise Renovation

Denver, CO
4.9
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Bay Windows

Website: http://www.riserenovation.com/
Address: 1700 Lincoln St floor 17, Denver, CO 80203
Phone: (720) 295-7451

Colorado Classic Exteriors: Windows, Doors, Pergolas

Arvada, CO
4.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: http://coloradoclassicexteriors.com/
Address: 7985 Vance Dr #202, Arvada, CO 80003
Phone: (720) 457-5536

A&M WINDOW SERVICE

Northglenn, CO
4.7
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Glass Repair
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Window Repair
  • Service icon Mirrors

Website: http://amwindow.com/
Address: 405 W 115th Ave Unit 2, Northglenn, CO 80234
Phone: (303) 450-2200

True View Windows & Glass

Westminster, CO
4.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Repair
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Mirrors
  • Service icon Glass Showers
  • Service icon Tempered Glass

Website: https://www.trueviewglass.com/
Address: 3200 W 71st Ave #20, Westminster, CO 80030
Phone: (720) 431-8783

Discount Windows & Siding, INC

Denver, CO
4.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Vinyl Frames
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: https://www.discountwindows.com/
Address: 4321 N Broadway #9, Denver, CO 80216
Phone: (303) 295-7283

Performance Windows

Broomfield, CO
4.6
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation

Website: https://www.goperformancewindows.com/
Address: 590 Burbank St, Broomfield, CO 80020
Phone: (720) 440-2168
Westminster Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Westminster, CO using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

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 Westminster Saves You Money

By upgrading to energy-efficient windows, you can take advantage of several benefits, including:

  • 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, leaky or maybe even damaged in some way. Updating your windows could help raise the value of your home if you decide to sell.
  • Save money on electricity bills: Installing energy-efficient windows lowers your energy bills by about 12% because you need less energy.
  • Protect your valuables from fading: When you switch to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will be protected from fading due to their ability to filter out damaging UV rays.
  • Decrease your carbon footprint: You can reduce your indirect greenhouse gas emissions by about 12% after you install Energy Star certified windows. In Westminster, that’s about 460 pounds per year on average.

Estimated Cost of Window Replacement in Westminster

Let’s take a look at the cost of installing new windows and the kinds of services offered by installers.

How Much Do New Windows Cost?

The average cost to install a single window is about $600 but can range from $200 to $1,200. How much it will cost varies based on several factors, like type, material, number of windows, the location of your home, size and more.

It’s also worth keeping in mind that energy-efficient windows will usually cost more initially, but Energy Star predicts that upgrading the windows on your Westminster home translates to an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. How much you’ll save by switching to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

We recommend requesting free quotes from several window companies to find the right windows and the company 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.

Full-frame installations are necessary when you want a new style or your window has a lot of rot. With this service, your installers will replace the full window, including the frame, sill and trim. A pocket installation involves replacing a window without removing the complete frame, which tends to be less expensive than a full-frame installation.

Your window installation company can advise you on the best type for your project. In Westminster, the choice will mostly be based on the efficiency of your home and the age of your existing frames.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house
Buy One Window, Get One 40% OFF
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Buy 2 Windows, Get 2 Free
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

How We Choose the Best Window Installers in Westminster

EcoWatch is different from most reviewers because we examine these companies through a sustainability lens. We have reviewed the best window replacement companies in Westminster mainly based on their energy efficient offerings, as it’s the most sustainable option and the best one for homeowners. Energy-efficient windows can lower 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 Westminster, we gave more points to companies that provide services to the city. There are other reputable providers that didn’t make our list because of the low odds that they would serve the average homeowner in Westminster.

Work Quality

We’re willing to bet that you’re looking for professionals who do a great job installing windows. We’ve vetted each company included on this list to ensure its contractors are well-qualified and that the company has received plenty of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed trends in recent online reviews to determine the companies with the most consistent customer satisfaction. Customer satisfaction might be the most important factor, as it reflects the quality of services across most other categories, including quality of parts, quality of installation, professionalism, warranty, cost and more.

Cost

Cheaper windows certainly don’t mean better windows, but we know many of our readers would like to keep costs as low as 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 hefty investment, so you’ll want to make sure that investment is well protected. Window installation companies that provide lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have been in the industry for a while. Window installation companies that have more experience will 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 replace windows in a home?

The national average cost of installing a window is about $600 but can range between $200 and $1,200, depending on several factors. The price is often dependent on the size of the window, the type and material of the window and the location of your property. Also, remember that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.

What are the most common types of replacement windows?

The most common types of windows for homes are bay windows, awning windows, slider windows, picture windows, double-hung and single-hung windows, casement windows and transom windows.

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 skills, we don’t recommend trying it.

When is the best time of year to replace windows?

Replacement windows can be installed during any season, but warmer weather is typically better. Regardless of when you install them, the contractors will take steps to make sure that too much hot or cold air doesn’t get into your home, so the temperature outside doesn’t necessarily matter that much. What’s most important is that the weather should be dry.