20 Best Window Companies in Littleton, CO (2023 Reviews)

If you're looking to get new windows, our list of the top window installation companies can help.

We analyzed all the top-rated window companies in Littleton 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 September 15, 2023

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 Littleton. Potential leaks or drafts from your windows can make your AC or heater work extra hard in the summer or winter.

That's also bad news for the environment, as the additional energy used by old windows increases your carbon footprint.

Unlike other sites, EcoWatch ranks window replacement companies on energy efficiency while also considering cost, customer satisfaction and service area.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Littleton

The EcoWatch team evaluated many window providers in Littleton to find the top ones for our readers. The installers we've mentioned in this article passed our review standards for energy-efficient offerings as well as local expertise, customer service, price and beyond.

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 Littleton. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window business for around 27 years.

It has established itself as a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

There 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 Littleton?

Pricing details are not available on Window World’s website, as the cost of window replacement depends 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. The best way to get more accurate information is to ask for a free quote from the company.

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 offers the best availability in Littleton. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of experience in the window replacement business. Its reputation is backed by several positive reviews on customer 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 Windows

Renewal by Andersen caters to eco-conscious consumers by providing 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 Littleton?

Pricing details are not available on Andersen’s website since the cost of window installment differs based on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can inquire about a free quote on its website for more information about pricing.

Universal Windows Direct logo
FAST QUOTE
as little as 30 seconds
Best Warranty

Universal Windows Direct

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 2002
Pros:
  • Pros icon Makes charitable contributions
  • Pros icon Manufactures products in-house
  • Pros icon Wide variety of products and services
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Limited service area
  • Pros icon Some installations carried out by third-party contractors
  • Pros icon Quality of service will depend on your area

Universal Windows Direct offers the best warranty in Littleton. This company has been in business since 2002 and currently services 27 states nationwide. Its reputation is backed by many positive reviews on customer review websites.

It has an industry-leading warranty covering products, parts and workmanship for life.

Energy Efficiency of Universal Windows Direct Windows

There are a wide range 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 Littleton?

Universal does not mention 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. If you’d like more accurate information, you can inquire about a quote on the company’s website.

Please note that the companies in this section are national, which means the quality of customer service may vary depending on your local team. We have tried to remain unbiased and transparent by including both pros and cons for every provider.

More Window Companies in Littleton

Renewal by Andersen Window Replacement

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

Services Offered

  • Service icon Full-Service Installations
  • Service icon Sliding Glass
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Bay Windows
  • Service icon Window Replacement

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

Champion Replacement Windows of Denver

Denver, CO
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Double-Hung
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Sliding Glass
  • Service icon Bay Windows

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

Window World of Denver

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

Services Offered

  • Service icon Bay Windows
  • Service icon Stained Glass
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Energy-Efficient Options
  • Service icon Glass Showers
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Aluminum Window Frames
  • Service icon Fast Delivery
  • Service icon Commercial Windows

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

Champion Replacement Windows of Colorado Springs

Colorado Springs, CO
4.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Sliding Glass

Website: https://www.championwindow.com/Colorado-Springs/
Address: 4610 N Chestnut St, Colorado Springs, CO 80907
Phone: (719) 344-2661

Champion Replacement Windows of Ft. Collins

Loveland, CO
4.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Window Replacement

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

Window Nation

Aurora, CO
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Stained Glass
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement

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

Five Seasons Windows and Doors

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

Services Offered

  • Service icon Double-Hung
  • Service icon Stained Glass
  • Service icon Bay Windows
  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Commercial Windows

Website: https://fiveseasonswindows.com/
Address: 1040 S Gaylord St Ste. 60, Denver, CO 80209
Phone: (720) 465-6728

Bellwether Windows, Siding, & Doors

Englewood, CO
4.4
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Free assessment

Services Offered

  • Service icon Aluminum Window Frames
  • Service icon Fast Delivery
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Commercial Windows
  • Service icon Custom Window Designs
  • Service icon Window Replacement

Website: https://bellwetherhomes.com/
Address: 1555 W Thomas Ave, Englewood, CO 80110
Phone: (303) 323-8578

JDI Windows

Littleton, CO
4.4
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Bay Windows
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Double-Hung
  • Service icon Window Repair
  • Service icon Custom Window Designs
  • Service icon Fast Delivery
  • Service icon Commercial Windows

Website: https://jdiwindows.com/
Address: 5204 S Prescott St, Littleton, CO 80120
Phone: (720) 427-4477

Gravina's Window Center of Littleton

Littleton, CO
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement
  • Service icon Double-Hung
  • Service icon Fast Delivery
  • Service icon Bay Windows
  • Service icon Custom Window Designs
  • Service icon Sliding Glass
  • Service icon Stained Glass
  • Service icon Residential Windows

Website: https://www.windowsforyourhome.com/
Address: 209 W Littleton Blvd, Littleton, CO 80120
Phone: (303) 794-0490

GS Exterior Experts

Littleton, CO
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Fast Delivery
  • Service icon Window Replacement
  • Service icon Commercial Windows
  • Service icon Residential Windows

Website: https://gsexteriorexperts.com/
Address: 9083 W Peakview Dr #2, Littleton, CO 80123
Phone: (720) 683-6288

See The Light Windows

Littleton, CO
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Glass Showers
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Commercial Windows
  • Service icon Window Repair
  • Service icon Sliding Glass
  • Service icon Bay Windows
  • Service icon Fast Delivery
  • Service icon Double-Hung
  • Service icon Energy-Efficient Options

Website: https://seethelightwindows.com/
Address: 10658 W Centennial Rd #300, Littleton, CO 80127
Phone: (720) 598-6500

Lakewood Glass and Windows

Lakewood, CO
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Double-Hung
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Tempered Glass
  • Service icon Fast Delivery
  • Service icon Commercial Windows

Website: http://www.lakewood.glass/
Address: 1198 S Pierce St unit a, Lakewood, CO 80232
Phone: (303) 995-8262

5280 Exteriors

Centennial, CO
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Glass Showers
  • Service icon Residential Windows
  • Service icon Custom Window Designs

Website: https://www.5280exteriors.com/
Address: 7000 S Yosemite St Ste 285, Centennial, CO 80112
Phone: (720) 707-6963

Reflection Windows & Doors

Denver, CO
4.3
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Commercial Windows
  • Service icon Window Repair
  • Service icon Window Replacement
  • Service icon Full-Service Installations
  • Service icon Glass Showers
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Double-Hung

Website: http://www.reflectionwindows.com/
Address: 900 S Jason St, Denver, CO 80223
Phone: (303) 426-4474

Dreamstyle Remodeling

Denver, CO
4.3
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Bay Windows
  • Service icon Full-Service Installations
  • Service icon Double-Hung
  • Service icon Fast Delivery
  • Service icon Glass Showers
  • Service icon Custom Window Designs

Website: https://www.dreamstyleremodeling.com/locations/denver/
Address: 637 Osage St, Denver, CO 80204
Phone: (303) 676-8172

Paramount Siding & Windows

Littleton, CO
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Sliding Glass
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Bay Windows
  • Service icon Window Replacement
  • Service icon Custom Window Designs

Website: https://www.paramountsidingandwindows.com/
Address: 6637 S Broadway, Littleton, CO 80121
Phone: (720) 650-6840

Colorado Window Source

Denver, CO
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Educational Website

Services Offered

  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Double-Hung
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Window Replacement
  • Service icon Glass Showers
  • Service icon Energy-Efficient Options

Website: https://www.coloradowindowsource.com/
Address: 1309B W Alameda Ave, Denver, CO 80223
Phone: (720) 727-6031

CMC Windows and Doors

Centennial, CO
4.3
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Full-Service Installations
  • Service icon Residential Windows
  • Service icon Stained Glass
  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Double-Hung

Website: https://www.cmcwindows.com/locations/colorado/centennial/
Address: 6950 S Tucson Way Ste O, Centennial, CO 80112
Phone: (720) 573-2230

HRTI

Greenwood Village, CO
4.2
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Full-Service Installations
  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Double-Hung

Website: https://hrti.com/
Address: 5375 Landmark Pl Ste 103, Greenwood Village, CO 80111
Phone: (303) 984-6159
Littleton Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Littleton, 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 Littleton Saves You Money

Switching to energy-efficient windows can help improve the comfort of your home and help you save on energy bills. Here are more ways switching out your windows could benefit you:

  • Save on energy bills: The Department of Energy estimates that heat gained or lost via windows accounts for about 25-30% of energy use in your home. Switching to energy-efficient windows can help reduce that number, which helps you save some money on your bills.
  • More efficient energy use in your home: Because the summers can get quite hot in Littleton, homeowners usually depend on their air conditioner during that time. Energy-efficient windows decrease how much cool air is lost through your windows, which makes it easier to keep your home cool.
  • Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its value, particularly if your home is on the older side.
  • Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only provide better insulation for your home, but also filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.

Estimated Cost of Window Replacement in Littleton

Each window installer provides various services and has varying costs based on a few factors.

How Much Do New Windows Cost?

Even though the average of replacing a single window is around $600, it can range anywhere from $200 to $1,200. How much it will cost depends on several factors, like type, the location of your home, size, number of windows, material and more.

It's also worth noting that energy-efficient windows will cost more upfront, but Energy Star estimates that upgrading the windows on your Littleton home can mean an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 per year for double-pane windows. How much you'll save by switching to energy-efficient windows depends on your local climate, energy rates and other factors unique to your home.

We recommend getting free quotes from several window installation companies to find the one that works best for your budget.

What Services do Window Installers Offer?

When it comes to window replacements, there are typically two kinds that your installer will offer: full-frame and pocket installations.

A full-frame installation replaces the complete window, including the sill, frame, trim and the window panes. Because this type of installation requires more time, it will cost more than a pocket installation. Pocket installations are simpler and won't cost as much, as they involve merely replacing the window within its existing frame. But if the frame has any damage, you should opt for a full-frame installation instead.

If you're unsure which type of window installation service you should get, your installer should be able to help you out. In general, the decision is influenced by factors such as the age and condition of the home, the type of building material, budget and time restrictions.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

How We Choose the Best Window Installers in Littleton

EcoWatch reviews are different from most reviews, as we evaluate these companies through a sustainability lens. We have reviewed the best window replacement companies in Littleton mainly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to cut your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

Because this is a guide for Littleton, we only included companies that cover the city. There are certainly reputable providers that didn't make the cut because of the low odds that they would serve the average homeowner in Littleton.

Work Quality

We're willing to bet that you're not looking for a company to do a shoddy job installing windows. We've vetted each company in our guide to ensure its technicians are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.

Customer Reviews

Customer feedback is another super important review factor. If most customers don't have positive feedback about their service from 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 try to keep costs low when possible. When analyzing the prices of providers, we awarded higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.

Warranty

Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have a good track record in the industry. Window installers that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.

Littleton, CO Window Replacement FAQs

How much does window installation cost?

The average cost of replacing a window ranges from $450 to $650. There are many factors that affect how much it costs, which include the materials used in designing the windows, local labor costs, styles and sizes of windows, how energy-efficient the windows are, the number of windows and your property's location.

Which type of window should I get?

Generally, double-pane windows will be more efficient than single-pane windows and windows that don't open will be more efficient than windows that do. To be sure you'll have the most energy-efficient windows, look for models with the blue Energy Star certification — this means they're certified energy-efficient by the U.S. Department of Energy.

When do I need to use a window installation company?

You should use a window installation company whenever you need new windows. Installing windows is a involved process that can be difficult to do on your own, so it's best left to the professionals.

When is the best time of year to replace windows?

While you can install windows any time of year, warmer weather is often better for installing replacement windows. Additionally, the weather should be dry, since rain can make the installation harder.

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