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

Looking to replace your home's windows? We’ve got all the information you need in this list of the top window installation companies.

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 June 24, 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 helping Littleton homeowners make their homes more eco-friendly. The Department of Energy estimates that heat or cool air lost through outdated or drafty windows could represent nearly 30% of residential energy climate use. In Littleton, where the electricity bills are an average of $35 per month, that’s almost $$125 per year wasted.

That’s also bad news for the environment because the extra energy used by drafty windows increases your carbon footprint.

We’ve made a list of the best installation companies to help you in your search, so you can not only benefit from brand-new windows, but also save money on your electricity bills.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Save 35% + $100 off per window!
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 Littleton

The EcoWatch Reviews team evaluated dozens of window companies in Littleton to find the top ones for our readers. We assessed the providers on energy-efficient offerings, customer service, local experience, coverage area, price 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 is the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window industry for around 27 years.

It is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

Window 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 Littleton?

Prices are not available on Window World’s website since the cost of window replacement varies greatly based 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. Getting a free quote on its website is the best way to get more accurate information.

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 is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window industry for around 27 years.

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 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?

Prices are not available on Andersen’s website since the cost of window replacement varies greatly 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. Getting a free quote on its website is the best way to get more accurate information.

We try to stay unbiased and transparent by mentioning pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.

More Window Companies in Littleton

Renewal by Andersen Window Replacement

Denver, CO
4.8
★★★★★
  • Pros icon Comprehensive 20-year warranty
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Also offers door installation and replacement
  • Pros icon Educational Website
  • Pros icon Hassle-free window replacement

Services Offered

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

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 ENERGY STAR® certified
  • Pros icon Price you're quoted is the price you pay
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Products made in the USA

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Double-Hung
  • 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 Colorado Springs

Colorado Springs, CO
4.5
★★★★★
  • Pros icon Free assessment
  • Pros icon Price you're quoted is the price you pay
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Products made in the USA
  • Pros icon ENERGY STAR® certified

Services Offered

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

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
4.6
★★★★★
  • Pros icon ENERGY STAR® certified
  • Pros icon Free assessment
  • Pros icon Price you're quoted is the price you pay
  • Pros icon Price Transparency
  • Pros icon Products made in the USA
  • Pros icon Good Customer Service

Services Offered

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

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 Safety-enhanced windows
  • Pros icon Heat-reflective and leak-resistant technology
  • Pros icon Good Customer Service
  • Pros icon Lifetime labor warranty

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

DaBella

Denver, CO
4.5
★★★★★
  • Pros icon Triple-pane vinyl windows
  • Pros icon Customized to your home
  • Pros icon Wide range of styles
  • Pros icon Timely Service
  • Pros icon Good Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Glass Doors
  • Service icon Vinyl Frames
  • 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
4.1
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

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

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

Colorado Windows and Restoration

Highlands Ranch, CO
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

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

Website: http://www.coloradowr.com/
Address: 9609 S University Blvd #630414, Highlands Ranch, CO 80130
Phone: (303) 953-0691

Storm Exteriors

Centennial, CO
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.stormexteriors.com/
Address: 7853 E Arapahoe Ct #3100, Centennial, CO 80112
Phone: (720) 900-1316

Paramount Siding & Windows

Littleton, CO
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Fast and efficient installation
  • Pros icon Educational Website
  • Pros icon Flexible financing
  • Pros icon Free assessment
  • Pros icon Customized windows

Services Offered

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

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

EcoShield Exteriors

Littleton, CO
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

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

Website: https://ecoshieldexteriors.com/
Address: 1490 W Canal Ct STE 1000, Littleton, CO 80120
Phone: (720) 574-2070

JDI Windows

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

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Window Repair
  • Service icon Vinyl Frames

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

GS Exterior Experts

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

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames
  • Service icon Fiberglass Frames
  • Service icon Metal Frames
  • Service icon Storm/Impact Windows

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

Five Seasons Windows and Doors

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

Services Offered

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

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

CMC Windows and Doors

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

Services Offered

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

One Window AT A Time

Aurora, CO
4.9
★★★★★
  • Pros icon Timely Service
  • Pros icon Price Transparency

Services Offered

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

Website: https://onewindowatatime.com/
Address: 2851 S Parker Rd #1080, Aurora, CO 80014
Phone: (720) 524-7151

Bellwether Windows, Siding, & Doors

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

Services Offered

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

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

Alpha Glass and Window, LLC

Englewood, CO
4.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Free assessment

Services Offered

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

Website: https://alphaglassdenver.com/
Address: 1545 W Tufts Ave Ste H, Englewood, CO 80110
Phone: (720) 325-1747

DenCo European Windows & Doors

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

Services Offered

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

Website: http://www.europeantiltturnwindows.com/
Address: 4301 S Federal Blvd Unit 107, Englewood, CO 80110
Phone: (720) 919-3099

Window Doctor Of Colorado

Sheridan, CO
4.8
★★★★★
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.windowdoctorofcolorado.com/
Address: 4001 S Federal Blvd, Sheridan, CO 80110
Phone: (720) 295-0362
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

There are several benefits of upgrading to energy-efficient windows. Some reasons you may want to consider making the switch include the following:

  • Reduce your carbon footprint: Because energy-efficient windows improve the insulation in your house, you can cut your indirect greenhouse gas emissions by about 12%, according to Energy Star.
  • Protect your investment: If you have a relatively old home, your windows are most likely in need of replacement. Upgrading your windows can improve the insulation in your home and also help raise the value of your home if you decide to sell.
  • Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
  • Save money on power bills: Installing energy-efficient windows reduces your energy bills by about 12% since you use less energy.

Estimated Cost of Window Replacement in Littleton

Windows come in different styles, shapes and purposes, so costs and services will vary remarkably based on your project. Below, we detail the average cost and services that you’ll find from window replacement companies.

How Much Do New Windows Cost?

On average, homeowners in Littleton can expect that most window installations will range from $250 to $1,200, with the most common installations sitting at around $600. How much it will cost depends on several factors, including number of windows, size, type, the location of your home, material and more.

With windows, efficiency is one of the most important factors for most homeowners. Efficient windows may cost more initially, but by increasing the efficiency of your home — especially during the summer and winter — they can provide decades of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Littleton homeowners $443+ a year after replacing single-pane windows.

Getting free quotes from multiple providers is the best way to figure out which one is right for you.

What Services do Window Installers Offer?

The first step when considering an installation is to think about whether you want a full-frame or pocket installation.

A full-frame installation replaces the entire window, such as the sill, frame, trim and the window panes. As this type of installation requires more time, it will be more expensive than a pocket installation. Pocket installations (or retrofits) entail replacing a window within the 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.

Your window replacement company will be able to help you choose what’s best for your needs. In Littleton, the decision will mostly be based on the age of your home and if there’s any damage. Wood can decay if not maintained properly over the years, so it’s a good idea to have a professional check on your frames and window sills.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Save 35% + $100 off per window!
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 Littleton

In our hunt to find the most reliable, eco-friendly window installers in Littleton, the EcoWatch team chose the above companies as the best window installation companies in the city. We have evaluated the best window installers in Littleton primarily based on their energy efficient offerings, as it’s what’s best for the environment and for you as a homeowner. Energy Star certified windows can reduce your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

This one is pretty self-explanatory, but we’ve chosen to highlight window installers that serve Littleton so you can find a quality window installation company near you.

Work Quality

When installing new windows, the quality and range of services often plays just as important of a role in insulation and performance as the type of window you get. 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

Another self-explanatory yet super important review factor is customer feedback. If most customers don’t have good feedback about their service from a certain window installation company, you won’t see it featured on EcoWatch.

Cost

Cheaper windows certainly don’t 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

As discussed previously, windows are a hefty investment, so you’ll want to be certain that investment is protected. Window installation companies that offer 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 years of 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

What is the typical cost to install new windows in a home?

The national average cost to replace a window is about $600 but can range between $200 and $1,200, depending on a variety of factors. The price is generally influenced by the location of your property, the type and material of the window and the size of the window. Also, keep in mind that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.

Which type of window should I get?

A window’s energy efficiency is affected by a number of factors, including the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are usually the most energy-efficient and are certified by the U.S. Department of Energy.

Can I replace my own windows?

Although it is possible to install your own windows, doing so requires a lot of time and handiness. Hiring a professional can help ensure that the job is done properly and that you won’t have to spend the time and effort to do it yourself.

When is the best time of year to replace windows?

Replacement windows can be installed any time of the year, but warmer weather is typically better. Regardless of when you install them, the contractors will take steps to ensure that too much hot or cold air doesn’t get into the house, so the temperature outside isn’t necessarily a big factor. What’s more important than the temperature is that the weather should be dry.