28 Best Window Replacement Companies in Denver, CO (Jan 2023)
Window Companies Near Me

Looking to improve your home's energy efficiency? The best window replacement companies can help.

We analyzed all the top window installers in Denver and selected the top 28 based on:

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

By EcoWatch Local Advisors

Updated January 12, 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 Denver. Drafty windows could lead to having higher energy bills during the winter or summer months.

Installing energy-efficient windows on your property can help you save money every month on your power bills — and you can help the environment as well.

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

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Member of US Green Building Council
  • Award-winning company
  • Great industry reputation
  • More expensive than competition

Best Affordability

Window World

★★★★★
4.5

  • Low prices relative to competitors
  • EnergyStar Partner
  • Large serice area
  • Quality of service will depend on your area

Best Warranty

Universal Windows Direct

★★★★★
4

  • Makes charitable contributions
  • Wide variety of products and services
  • Manufactures products in-house
  • Limited service area

Best Window Replacement Companies in Denver

The EcoWatch team researched many window providers across Denver to narrow our list down to the best ones. We assessed the companies based on energy-efficient offerings, coverage area, price, customer service, local experience and more.

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 Member of US Green Building Council
  • Pros icon Award-winning company
  • Pros icon Great industry reputation
Cons:
  • Pros icon More expensive than competition

Renewal by Andersen has the best availability in Denver. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the window installation sector. Its reputation is backed by many positive reviews on customer review websites.

You may want to consider going with Andersen if you're interested in 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 carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. 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 Denver?

Prices are not available on Andersen's website since the cost of window replacement 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. For more accurate information on the cost, you can inquire about a quote from the company.

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

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Low prices relative to competitors
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
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. This company has 27 years of experience in the window installation business, and it has become one of the most reputable companies in the business.

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, this may be the perfect provider for you.

Energy Efficiency of Window World Windows

Window World is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company's windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Window World representative when inquiring about services.

How much does Window World cost in Denver?

Window World doesn't have any pricing information available 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.

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 Wide variety of products and services
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon Limited service area

Universal Windows Direct is a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This company has been in business since 2002 and currently services 27 states nationwide. The company has hundreds of positive reviews from customers online.

You may want to consider opting for Universal if you're looking for a installer that has an industry-leading warranty covering products, parts and workmanship for life.

Energy Efficiency of Universal Windows Direct Windows

Universal Windows Direct is an Energy Star partner and offers a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company's windows are Energy Star certified, so be sure to ask your Universal representative when inquiring about services.

How much does Universal Windows Direct cost in Denver?

Prices aren't available on Universal's 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 pricing information, you can receive a quote on the company's website.

We've recommended installers with good reputations, but keep in mind some national companies have independently owned locations in Denver, so the quality of service may vary depending on your local crew. We have tried to stay unbiased and transparent by listing pros and cons for every company we reviewed.

More Window Replacement Companies in Denver

Storm Guard of South Metro Denver

Parker, CO
5
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Locally Recognized for Quality
  • Pros icon Free Quotes

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Stained Glass

Website: https://www.stormguardrc.com/co/denver-south-metro/
Address: 10964 S Pikes Peak Dr, Parker, CO 80138
Phone: (720) 789-7608

The Glass Guru

Arvada, CO
5
★★★★★
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Dependable Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Tempered Glass
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.theglassguru.com/denver-west-co/
Address: 6618 Wadsworth Blvd, Arvada, CO 80003
Phone: (720) 782-5934

Storm Guard North Metro Denver

Brighton, CO
5
★★★★★
  • Pros icon Reliable Appointment Windows
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Stained Glass

Website: https://www.stormguardrc.com/co/denver-north-metro/
Address: 8495 County Rd 2, Brighton, CO 80603
Phone: (303) 223-5719

Window World of Denver

Denver, CO
4.3
★★★★★
  • Pros icon Educational Website
  • Pros icon Reliable Service
  • Pros icon Timely Service
  • Pros icon Free Quotes

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

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

Commercial Storefront Glass Denver

1555 Larimer St, CO
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Arrives on Time
  • Pros icon No-fee Quotes
  • Pros icon Locally Recognized for Quality

Services Offered

  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Double-Hung

Website: http://commercialstorefrontglassdenver.com/
Address: space CR711, 1555 Larimer St, Denver, CO 80202
Phone: (720) 543-7870

Northern Lights Exteriors

Fort Lupton, CO
4.3
★★★★★
  • Pros icon Award-Winning
  • Pros icon No-fee Quotes
  • Pros icon Educational Website
  • Pros icon Reliable Service

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Sliding Glass

Website: https://northernlightsexteriors.com/
Address: 11375 Co Rd 23, Fort Lupton, CO 80621
Phone: (303) 776-5263

True View Windows & Glass

Westminster, CO
4.2
★★★★★
  • Pros icon Dependable Service
  • Pros icon Free Quotes
  • Pros icon Excellent Customer Service
  • Pros icon Arrives on Time

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Glass Showers
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

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

CMC Proudly Offering Marvin Windows and Doors

Centennial, CO
4.1
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Dependable Service
  • Pros icon Free Quotes
  • Pros icon Good Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Aluminum Window Frames
  • Service icon Energy-Efficient Options

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

Binswanger Glass

Castle Rock, CO
4.1
★★★★★
  • Pros icon Reliable Service
  • Pros icon Timely Service
  • Pros icon Helps Educate Customers
  • Pros icon Excellent Customer Service

Services Offered

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

Website: https://www.binswangerglass.com/branch/castle-rock-co-1133-caprice-dr/
Address: 1133 Caprice Dr, Castle Rock, CO 80109
Phone: (303) 688-3945

Hillcrest Glass

Longmont, CO
4.1
★★★★★
  • Pros icon Educational Website
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes
  • Pros icon Reliable Service

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Heavy Glass
  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.hillcrest-glass.com/
Address: 504 4th Ave, Longmont, CO 80501
Phone: (303) 776-9511

Five Seasons Windows and Doors

Denver, CO
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Excellent Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon Timely Service

Services Offered

  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://fiveseasonswindows.com/
Address: 1040 S Gaylord St Ste. 60, Denver, CO 80209
Phone: (720) 740-1391

Alpen High Performance Products

Louisville, CO
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free Quotes
  • Pros icon Award-Winning

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Commercial Windows
  • Service icon Double-Hung

Website: http://thinkalpen.com/
Address: 335-A Centennial Pkwy, Louisville, CO 80027
Phone: (800) 882-4466

Colorado Rockies Windows and Doors

Golden, CO
3.9
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Arrives on Time
  • Pros icon Consistent Workmanship
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.coloradorockieswindowsanddoors.com/
Address: 941 Sleepy Hollow Rd, Golden, CO 80401
Phone: (720) 626-0900

Ameritech Windows

Boulder, CO
3.9
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Dependable Service
  • Pros icon Timely Service
  • Pros icon Locally Recognized for Quality

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: https://www.ameritechwindows.com/
Address: 1310 College Ave #400, Boulder, CO 80302
Phone: (303) 444-1998

GS Exterior Experts

Littleton, CO
3.9
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Business Windows
  • Service icon Double-Hung

Website: https://gsexteriorexperts.com/
Address: 8580 S Nelson Ct, Littleton, CO 80127
Phone: (720) 683-6288

United Windows Pro - Windows and glass repair

Aurora, CO
3.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Helps Educate Customers
  • Pros icon Reliable Service
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Tempered Glass
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

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

Ken Caryl Glass, Inc.

Mead Way, CO
3.8
★★★★★
  • Pros icon Arrives on Time
  • Pros icon No-Hassle Pricing
  • Pros icon Helps Educate Customers
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Doors
  • Service icon Custom Window Designs
  • Service icon Business Windows
  • Service icon Sliding Glass

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

303 WINDOWS

Denver, CO
3.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Dependable Service
  • Pros icon Free Quotes

Services Offered

  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.303windows.com/
Address: 2375 S Downing St, Denver, CO 80210
Phone: 303 WINDOWS

Sky Manor Roofing & Exteriors

Thornton, CO
3.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Reliable Appointment Windows
  • Pros icon No-Hassle Pricing
  • Pros icon Dependable Service

Services Offered

  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows

Website: http://www.skymanorroofing.com/
Address: 13591 High Cir, Thornton, CO 80241
Phone: (303) 876-0055

Reliable Glazing

Denver, CO
3.8
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon No-Hassle Pricing
  • Pros icon Timely Service
  • Pros icon Helps Educate Customers

Services Offered

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

Website: http://www.reliableglazing.com/
Address: 3085 S Rosemary St, Denver, CO 80231
Phone: (720) 981-4048

Mountain View Window & Door

Denver, CO
3.8
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon No-fee Quotes
  • Pros icon Consistent Workmanship
  • Pros icon Locally Recognized for Quality

Services Offered

  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Commercial Windows
  • Service icon Double-Hung

Website: http://www.mtnview.us/
Address: 815 S Jason St, Denver, CO 80223
Phone: (303) 649-2217

Colorado Classic Exteriors: Windows, Siding, Doors, Pergolas

Arvada, CO
3.7
★★★★★
  • Pros icon Dependable Service
  • Pros icon Excellent Customer Service
  • Pros icon Price Transparency
  • Pros icon Free Quotes

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Energy-Efficient Options

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

Lifetime Windows & Siding

Denver, CO
3.7
★★★★★
  • Pros icon Dependable Service
  • Pros icon Arrives on Time
  • Pros icon Excellent Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Windows
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: http://www.lifetimewindowscolorado.com/
Address: 2330 Broadway St Ste 110, Denver, CO 80205
Phone: (303) 536-8809

Slade Glass Co.

Longmont, CO
3.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Charitable Giving
  • Pros icon Free Quotes
  • Pros icon Educational Website

Services Offered

  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Sliding Glass

Website: http://www.sladeglass.com/
Address: 504 5th Ave, Longmont, CO 80501
Phone: (303) 776-3400

Absolute Glass & Windows LLC

Aurora, CO
3.7
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Consistent Workmanship

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Sliding Glass

Website: https://www.absoluteglassandwindows.com/
Address: 401 Laredo St C Unit C, Aurora, CO 80011
Phone: (303) 848-4094

Slade Glass Co.

Boulder, CO
3.7
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon Gives to charity
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Business Windows
  • Service icon Sliding Glass

Website: http://www.sladeglass.com/
Address: 1770 38th St, Boulder, CO 80301
Phone: (303) 442-3662

Alpha Glass and Window, LLC

Englewood, CO
3.7
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Locally Recognized for Quality
  • Pros icon Educational Website
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Custom Windows
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://alphaglassdenver.com/
Address: 1545 W Tufts Ave Ste H, Englewood, CO 80110
Phone: (720) 382-8524

Window Replacement Denver

Denver, CO
3.7
★★★★★
  • Pros icon Dependable Service
  • Pros icon No-fee Quotes
  • Pros icon Locally Recognized for Quality
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://windowreplacementdenver.com/
Address: 1480 Wolff St #116, Denver, CO 80204
Phone: (720) 701-2202

How Installing Energy-Efficient Windows in Denver Saves You Money

Switching to energy-efficient windows can help improve the comfort of your home and help you save on power bills. Here are more details about how upgrading your windows could help you:

  • Reduce your carbon footprint: Since energy-efficient windows improve the insulation in your home, you can reduce your carbon footprint by about 12%, according to Energy Star.
  • Protect your investment: When your home is on the older side, your windows could also be outdated or leaky. Upgrading your windows is an important part of maintaining your property and its value.
  • Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only insulate your home better, but also filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
  • Save on power bills: After you switch to energy-efficient windows, you can see a reduction in your bills by about 12% since you'll require less energy to heat or cool your home.

Estimated Cost of Window Replacement in Denver

Let's take a look at the cost of updating your windows and the kinds of services offered by installers.

How Much Do New Windows Cost?

According to our market research, the typical cost to replace a single window is about $600. However, window replacement costs can range from $200 to $1,200 a window. But costs will vary considerably based on the quality of your products, the number of windows you need, your location and the current condition of your home. A lot of window companies also offer replacement door installations and other add-ons like coating, baths, shutters and more. Additional services will increase your overall project costs.

It's also worth noting that energy-efficient windows will almost always cost more initially, but Energy Star predicts that upgrading the windows on your Denver home can mean an average energy savings of $236 to $319 a year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. The amount of money you'll save by switching to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

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

What Services do Window Installers Offer?

In regard to window installations, there are typically two kinds that your installer will offer: 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 a new style for your windows or when it has a great amount of damage. Full-frame installations require more time and labor and will increase overall costs. A pocket installation entails replacing a window within the old frame. So, instead of taking out the whole window and reinstalling it, the contractor will just slide the replacement window (also called a retrofit or insert window) into the frame.

Your window replacement company should be able to help you figure out what's best for your needs. In Denver, the decision will mostly be based on how old your home is and if there's any damage. Wood can decay if not maintained properly over the years, so it's good to have a professional examine your frames and window sills.

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Member of US Green Building Council
  • Award-winning company
  • Great industry reputation
  • More expensive than competition

Best Affordability

Window World

★★★★★
4.5

  • Low prices relative to competitors
  • EnergyStar Partner
  • Large serice area
  • Quality of service will depend on your area

Best Warranty

Universal Windows Direct

★★★★★
4

  • Makes charitable contributions
  • Wide variety of products and services
  • Manufactures products in-house
  • Limited service area

How We Choose the Best Window Installers in Denver

In our search to make your home improvements easier and more eco-friendly in Denver, the EcoWatch team assessed many companies before settling on these. We've reviewed the best window replacement companies in Denver mostly based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to lower electricity 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 the Denver area so you can find the best window installation company near you.

Work Quality

When choosing new windows, the quality and breadth of services can often play just as important of a role in insulation and performance as the type of window you get. We do give window installers more points if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.

Customer Reviews

Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don't have good things to say about their experience with a certain company, it won't be featured on EcoWatch.

Cost

Cheaper windows don't necessarily mean better windows, but we know many of our readers want to keep costs low when possible. When analyzing the prices of providers, we awarded higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.

Warranty

Protecting your investment in new windows is important. That's why window installation companies with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Because of Denver's climate, homeowners need to be wary of water damage, low efficiency and rot. We factored in local experience to reflect the ability of Denver window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.

Denver, CO Window Replacement FAQs

How much does a window install cost?

The average cost of replacing one window ranges between $450 and $650. There are several factors that influence how much it costs, including how energy-efficient the windows are, styles and sizes of windows, the materials used in designing the windows, the number of windows, your property's location and local labor costs.

Which kind of window is the best?

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

What services do window replacement companies provide?

Window installers travel to your home to remove your old windows and replace them with new ones. Some providers install products made by other companies, whereas others install their own windows. The installer will also clean up after the installation.

What time of year is a good time to replace my windows?

Replacement windows can be installed any time of the year, but warmer weather is typically better. No matter when you install them, the contractors will take steps to ensure that too much hot or cold air doesn't get into your house, so the temperature outside doesn't necessarily matter that much. What's most important is that the weather should be dry.

When is it time to replace your windows?

Windows typically have a lifespan of about 20 to 30 years, but anytime you see damage on your windows, it's a good time to have an expert take a look at them to see if they are in need of a repair or replacement.

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