20 Best Window Companies in Castle Rock, CO (2024 Reviews)

If you’re thinking about upgrading to new windows, our guide to the top window installation companies can help.

We analyzed all the top-rated window companies in Castle Rock 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 April 21, 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.

A guide on the top window replacement companies in Castle Rock may not seem like the most riveting article on EcoWatch, but trust us, windows have a more direct impact on your life than you might think. Potential leaks or drafts from your windows can make your home uncomfortable in the summer or winter.

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

Unlike other sites, EcoWatch ranks window installation companies based 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
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 Castle Rock

The EcoWatch team evaluated dozens of installers across the country to find the best window replacement companies for our readers. We assessed the companies based on their energy-efficient offerings, coverage area, customer service, local experience, 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 provides windows expertise in Castle Rock. 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 business, and it has proved to be one of the best companies in the business. Many positive reviews from customers online back the company's reputation.

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 Castle Rock?

Window World does not detail prices on its website, but it's known for offering some of the most affordable window installations around. For more accurate information on pricing, you can get a 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 provides the best availability in Castle Rock. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has 27 years of experience in the windows business, and it has proved to be one of the best companies in the business. Many positive reviews from customers online back the company's reputation.

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

There 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 Castle Rock?

Andersen does not detail 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. For more accurate information on pricing, you can get a quote from the company.

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 provides the best warranty in Castle Rock. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This company has 20 years of experience in the windows business, and it has proved to be one of the best companies in the business. Many positive reviews from customers online back the company's reputation.

It has established itself as a company that has an industry-leading warranty covering products, parts and workmanship for life.

Energy Efficiency of Universal Windows Direct Windows

There are a wide variety of window types available from Universal Windows Direct, some of which are Energy Star products. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.

How much does Universal Windows Direct cost in Castle Rock?

Universal does not detail 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. For more accurate information on pricing, you can get a quote from the company.

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

More Window Companies in Castle Rock

Renewal by Andersen Window Replacement

Denver, CO
4.8
★★★★★
  • 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
  • Service icon Bay Windows
  • Service icon Vinyl Frames
  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

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 Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

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

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 Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

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

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

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 Free assessment
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

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

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

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 Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

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

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

Home Design Exteriors

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

Services Offered

  • Service icon Window Replacement/Installation

Website: https://www.homedesignexteriors.com/
Address: 12210 S Eagle Hawk Trail, Parker, CO 80134
Phone: (303) 960-7217

Colorado Windows and Restoration

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

Services Offered

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

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

All-Star Construction Windows & Doors

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

Services Offered

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

Website: http://www.allstarconstruction.org/
Address: 515 Singing Hills Rd Unit 104, Parker, CO 80138
Phone: (303) 646-3018

High West Glass

Castle Rock, CO
3.3
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

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

Website: http://highwestglass.com/
Address: 1003 Halfmoon Dr, Castle Rock, CO 80104
Phone: (303) 704-0577

CMC Windows and Doors

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

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

Glass Doctor of Englewood, CO

Centennial, CO
4.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

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

Website: https://glassdoctor.com/englewood-co
Address: 15131 E Fremont Dr #103, Centennial, CO 80112
Phone: (720) 961-5408

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

Paramount Siding & Windows

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

Services Offered

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

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

Pella Windows & Doors of Greenwood Village

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

Services Offered

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

Website: https://www.pella.com/locations/co/greenwood-village/
Address: 8745 E Orchard Rd Suite 517, Greenwood Village, CO 80111
Phone: (303) 371-3750

Ken Caryl Glass, Inc.

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

Services Offered

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

Website: https://kcglassinc.com/
Address: 12450 N, 12450 Mead Way, Littleton, CO 80125
Phone: (303) 791-3122

Colorado Window & Siding Inc

Centennial, CO
4.6
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.coloradowindow.com/
Address: 31 E Panama Dr Ste H, Centennial, CO 80121
Phone: (303) 471-6960

Douglas Enterprises Inc

Lone Tree, CO
2.8
★★★★★
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Triple Pane Glass

Website: http://www.douglasenterprizes.com/
Address: 10471 Montecito Dr, Lone Tree, CO 80124
Phone: (303) 840-2715

United Windows Pro - Windows and glass repair

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

Services Offered

  • Service icon Triple Pane Glass
  • Service icon Glass Repair
  • Service icon Wood Frames
  • Service icon Tempered Glass
  • Service icon Window Repair
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Energy-Efficient Options

Website: https://www.unitedwindowspro.com/
Address: 4515 S Nepal Ct, Aurora, CO 80015
Phone: (720) 400-2929
Castle Rock Window Cost Calculator

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

Upgrading to energy-efficient windows can help improve the comfort of your home and help you save on power bills. Here's more information on how upgrading your windows could help you:

  • Protect your investment: When you have an older home, your windows could also be outdated or leaky. Keeping your windows up to date is an important part of maintaining your property and its value.
  • Reduce your carbon footprint: By using less energy after switching to energy-efficient windows, you’ll also be reducing your carbon dioxide emissions by about 12%, according to Energy Star.
  • Save on power bills: According to the Department of Energy, heat gained or lost through windows makes up about 25-30% of household energy use. Upgrading to energy-efficient models can help lower how much energy is used in your home, therefore saving you about 12% more on your bills.
  • Protect your valuables: The low-emissivity coatings on many energy-efficient windows help prevent your floors, carpets and furniture from fading by filtering out UV rays.

Estimated Cost of Window Replacement in Castle Rock

Let’s take a look at the cost of installing new windows and the types of services you may need for your home.

How Much Do New Windows Cost?

Typically, homeowners in Castle Rock can anticipate that most replacement window installations will cost between $250 and $1,200, with the average cost at around $600. This is due to the fact that window installations are based on several factors specific to your home, such as the size, material and number of windows you need to install, as well as the location of your property.

Bear in mind that energy-efficient windows may come at a higher price tag, but Energy Star estimates the upgrade will save you between $101 and $583 per year when replacing single-pane windows and between $27 and $197 a year when you replace double-pane, clear glass windows. Your exact savings will vary based on your local climate, energy rates and individual home characteristics.

How much your window installation costs will also vary based on the kind of material you choose for the frames. Wood windows are usually the most expensive, although it depends on whether they are solid 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?

Generally, there are two types of window installation services you can get: full-frame and pocket installations.

Full-frame installations require replacing the entire window — the sill, frame, trim and all. These are typically done when you want to change the style of your window or when it has a great amount of rot or deterioration. Full-frame installations are more involved and will increase overall costs. Pocket installations (or retrofits) involve installing a new window within the existing frame, which makes pocket installations less labor-intensive and costly. But, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.

If you’re still trying to decide which kind of installation to get, you can talk to your provider and get their recommendation. The decision mostly is influenced by how old the frames are and if there’s any damage present.

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 Castle Rock

In our hunt to make your home improvements easier and more eco-friendly in Castle Rock, the EcoWatch Reviews team assessed many companies before landing on these. We have assessed the best window installation companies in Castle Rock primarily based on energy efficiency, as it’s the most sustainable option and the best one for homeowners. Energy-efficient windows have been shown to reduce your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:

Service Area

This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve Castle Rock so you can find the best window installation company near you.

Work Quality

When it comes to new windows, the quality and range of services can often play just as important of a role in overall efficiency and performance as the brand of window you get. We do give window installers more points if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.

Customer Reviews

Customer feedback is another super important review factor. If the majority of customers don’t have nice things to say about their service from a certain window installation company, it won’t be featured on EcoWatch.

Cost

This one is a give-and-take: as with most services, cheap window companies won’t always provide the highest quality service. On the other hand, we want to make sure we’re highlighting companies that provide a variety of price and financing options so they’re accessible to most homeowners.

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

Because of Castle Rock’s climate, homeowners will want to mitigate rot, low efficiency and water damage. We factored in local experience to reflect the ability of Castle Rock window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.

Castle Rock, CO Window Replacement FAQs

What is the average cost to replace windows in a home?

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

What are the different kinds of windows?

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

Do you really need to use a window installation company?

You should use a window installation professional whenever you need to replace your windows. Installing windows is a involved process that can take a lot of time, so it’s best left to the professionals.

When is the best time of year to replace windows?

Although you can install windows any time of year, warmer weather is often better for replacing windows. In addition, the weather should be dry, because rain can make the installation more difficult.

Should I replace all my windows at the same time?

If your windows are greater than 20 years old, it’s most likely time to replace all of them. By that point, they are typically less efficient, leakier and/or more damaged than new windows. Doing your windows all at the same time will involve less paperwork and less time.