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10 best window replacement companies in Thornton, Colorado

HOMEFRONT

Updated Jun 22, 2024

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Companies in Thornton
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Swapping out older windows for newer, premium models offers several advantages, like maintaining comfortable indoor temperatures, easing the load on your HVAC and lowering monthly energy bills. According to the U.S. Department of Energy, around 25%–30% of residential heat and AC costs are from both warm and cold air transfer through inefficient windows. The best window replacement companies in Thornton can help you find windows that enhance both attractiveness and performance.

Upgrading to high-grade, energy-efficient windows begins with understanding what to research. First, we suggest opting for replacement windows with an Energy Star label. This certification verifies that the window meets the performance criteria defined by the National Fenestration Rating Council. The label also tells you the climate where the window will function best: a northern, north-central, south-central or southern region.

Our Top Pick
Provider logo
4.6
Our Rating
  • Offers lengthy window and labor warranty
  • Provides triple-pane windows
  • Sells specialty window shapes
GET ESTIMATE
Provider logo
4.2
Our Rating
  • Performs full-service installation
  • Sells enclosed patios and sunrooms
  • Holds many awards and certifications
Save 35% + $100 off per window!
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Provider logo
4.0
Our Rating
  • Holds high customer ratings
  • Offers energy-efficient products
  • Provides a lifetime labor warranty
Next-Day Appointments Available
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Find the best window replacement company for you in Thornton

The best window replacement companies in Thornton offer extensive product varieties, comprehensive warranty policies, competitive estimates and a proven history of high-quality work.

Since Thornton is located in a northern climate zone, you should look for a U-Factor of 0.2–0.26. This ensures the window is insulated enough to withstand harsh winters. The lower the U-factor, the better the window retains heat. You should also look for a Solar Heat Gain Coefficient (SHGC) of less than 0.17. The lower the SHGC, the better the window resists unwanted heat gain and the less you’ll spend on cooling in summer.

Featured Partner

Renewal by Andersen Window Replacement

5.0/5(5,048)
Today's Hours | 7AM–8PM
Top Rated
Popular
Offers Available

What customers say

Reviews for Renewal by Andersen note the team's professional installation, high-quality and energy-efficient windows and excellent customer service. However, some customers mention the high cost and occasional scheduling issues​.

Services offered

Bay WindowsCustom Window DesignsDouble-HungEnergy-Efficient OptionsGlass DoorsVinyl FramesWindow Replacement/Installation

Highlights

  • 14 years in business
  • Also offers door installation and replacement
  • Comprehensive 20-year warranty
  • Hassle-free window replacement

1401 W Bayaud Ave #7, Denver, CO 80223

(720) 263-7039

renewalbyandersendenver.com
Featured Partner

Champion Replacement Windows of Denver

4.8/5(1,751)
Today's Hours | Closed
Popular
Offers Available

What customers say

Reviews mention Champion Replacement Windows of Denver's professional installation, high-quality products and great service, but say there were some post-installation follow-up issues​.

Services offered

Bay WindowsDouble-HungGlass DoorsWindow Replacement/Installation

Highlights

  • 27 years in business
  • Price you're quoted is the price you pay
  • Energy star® certified
  • Products made in the usa

10035 E 40th Ave Suite 400, Denver, CO 80238

(303) 800-2129

www.championwindow.com/Denver
Featured Partner

Champion Replacement Windows of Ft. Collins

4.9/5(887)
Today's Hours | Closed
Top Rated
Popular
Offers Available

What customers say

Customers say Champion Replacement Windows of Ft. Collins provides quick, efficient installation and has great communication, but the team's follow-up service needs improvement.

Services offered

Bay WindowsDouble-HungGlass DoorsWindow Replacement/Installation

Highlights

  • 25 years in business
  • Energy star® certified
  • Price you're quoted is the price you pay
  • Products made in the usa

5850 Byrd Dr, Loveland, CO 80538

(970) 744-2604

www.championwindow.com/Ft-Collins
Featured Partner

Power Home Remodeling

4.8/5(3,046)
Today's Hours | Closed
Popular

What customers say

Customers like Power Home Remodeling's prompt professional service and great quality work but mention team members can use high-pressure sales tactics and run into scheduling issues​.

Services offered

Energy-Efficient OptionsWindow Replacement/Installation

Highlights

  • 7 years in business
  • Safety-enhanced windows
  • Lifetime labor warranty
  • Heat-reflective and leak-resistant technology

7304 S Joliet St #100, Centennial, CO 80112

(303) 357-2484

powerhrg.com
Featured Partner

DaBella

4.9/5(1,219)
Today's Hours | Closed
Popular
Offers Available

What customers say

Reviews say DaBella has friendly and knowledgeable staff, as well as professional service and quality installations. However, some note issues with delays in follow-up, as well as poor subcontractors​.

Services offered

Double-HungGlass DoorsVinyl FramesWindow Replacement/Installation

Highlights

  • 2 years in business
  • Triple-pane vinyl windows
  • Wide range of styles
  • Customized to your home

6600 E Hampden Ave, Denver, CO 80224

(720) 619-8704

dabella.us/location/colorado
USA Today

K&G Window Pros

5.0/5(374)
Today's Hours | 9AM–2PM
Top Rated
Popular

Services offered

Glass DoorsWindow Replacement/Installation

Highlights

  • Educational website
  • Free assessment
  • Price transparency
  • Good customer service

203 Telluride St Suite 850, Brighton, CO 80601

(720) 328-2786

kgwindowpros.com
USA Today

Colorado Glass and Mirror LLC

5.0/5(177)
Today's Hours | Closed
Top Rated
Popular

Services offered

Custom GlassGlass ShowersMirrorsWindow RepairWindow Replacement/Installation

Highlights

  • Good customer service
  • Free assessment
  • Price transparency

1400 W 70th Ave, Denver, CO 80221

(303) 477-0082

mycoloradoglass.com
USA Today

True View Windows & Glass

4.9/5(417)
Today's Hours | Closed
Top Rated
Popular
Offers Available

What customers say

Customers praise True View Windows and Glass for professional courteous service and quality installations but some highlight issues with timely communication and difficulty scheduling.

Services offered

Glass DoorsGlass ShowersMirrorsTempered GlassWindow RepairWindow Replacement/Installation

Highlights

  • 7 years in business
  • Fabricate, cut, and install
  • Wide variety of styles
  • No-pressure appointments

3200 W 71st Ave #20, Westminster, CO 80030

(720) 431-8783

www.trueviewglass.com

Window World of Denver

4.9/5(356)
Today's Hours | Closed
Popular

Services offered

Bay WindowsCustom Window DesignsDouble-HungEnergy-Efficient OptionsGlass DoorsTriple Pane GlassWindow Replacement/Installation

Highlights

  • Good customer service
  • Timely service
  • Free assessment
  • Price transparency
  • Educational website

480 E 76th Ave Bldg 5E, Denver, CO 80229

(303) 574-9594

www.windowworldcolorado.com

Colorado Classic Exteriors: Windows, Doors, Pergolas

4.8/5(216)
Today's Hours | Closed
Popular

Services offered

Glass DoorsWindow Replacement/Installation

Highlights

  • Good customer service
  • Educational website
  • Free assessment
  • Price transparency

7985 Vance Dr #202, Arvada, CO 80003

(720) 457-5536

coloradoclassicexteriors.com

More providers

Below are additional window replacement companies that didn’t make our top picks based on their distance, ratings or service offerings.

Mountainland Covers

4.8/5(309)
6430 E 50th Ave Unit B, Commerce City, CO 80022

BlueBird Windows & Doors

5.0/5(345)
1200 Diamond Cir Unit J, Lafayette, CO 80026

Performance Windows

4.7/5(186)
590 Burbank St, Broomfield, CO 80020

Lifetime Windows & Siding

4.9/5(1,116)
9525 E 40th Ave Unit 160A, Denver, CO 80238

What are signs that I need my windows replaced?

Your windows will often let you know when they need to be upgraded. Normal indicators that it's time for an update include the following:

  • Escalating energy bills
  • Poor operation, such as not opening or closing easily
  • Problematic noise pollution from outside
  • Condensation between glass panes (moisture on the exterior or interior of panes is normal)
  • Poor curb appeal due to age or weathering
  • Air leakage around windows
  • Damage, such as cracked glass or broken framing

You can opt to upgrade just one window if it's damaged or needs replacement for any other reason. However, if all the windows in your home are worn, inefficient or detract from curb appeal, doing a full upgrade is the way to go for maximum improvement.

Deciding not to upgrade your inefficient or damaged windows can cost you down the road. Problems like air infiltration can make your utility bills skyrocket and overburden your HVAC unit. Excess dampness can result in window decay and potentially mold in your house. Damaged windows might also pose a security risk if the damage could allow intruders to easily enter your home.

How much does it cost to replace windows in Thornton?

Window replacement costs are contingent upon a variety of factors, but expect to pay about $220 to $330 per window for materials in Thornton, according to RSMeans. Factors such as the complexity and size of the project will affect labor costs. An October 2023 survey of homeowners put the national average cost for a window installation project with up to five windows at $9,014 for aluminum-frame windows and $9,403 for wood-frame windows.

Window replacement cost factors

Several details can cause your total expense to fluctuate, such as window style, materials, glass type, installation fees, efficiency features, house age and window location. Larger, more intricate styles such as bay windows and bow windows will cost more, as do premium windows. You’ll pay more for higher end materials, such as fiberglass, composite and wood.

Window replacement cost by replacement type

The two main replacement types are pocket and full-frame installations. If it's only the glass sheet that needs fixing, you can save money by having a technician switch out only that part, rather than the whole unit. But for problems with the window frame itself, such as damaged pieces, drafts leaking in or moisture damage, a full-frame replacement is required.

Facts about Thornton

Low cost per window
$223
Thornton
$240
National Average
High cost per window
$334
Thornton
$360
National Average
Average Daily Sunlight
71%
Thornton
69%
National Average
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Best window replacement for you

Experts Ready to Help

How can I save money on Thornton window replacement?

Investing in window replacement has clear future benefits, but you'll still want to find the best deal possible. A couple of ways to get the most out of your budget include the following:

  • Choose standard colors and sizes: Opting for a special appearance can inflate the bill, but may not enhance the window's actual performance or capabilities.
  • Purchase in the off-season: Because you'll have to keep windows open for anywhere from a few hours to a few days during replacement, most updates are done when outdoor temperatures are mild. Agreeing to winter installation can encourage discounts from vendors trying to fill openings in their schedules.
  • Buy in bulk: Buying all new windows at one time is usually cheaper than separating purchases out slowly. Window manufacturers regularly provide discounts when you buy in bulk. Vendors also tend to increase prices each year, so purchasing all your windows at once can help you avoid those added costs.
  • Pay in cash or by check: It's common for companies to charge fees when you pay by credit card. A 3% card processing fee is pricey when you’re spending hundreds to thousands of dollars.
  • Compare estimates: Get quotes from various window companies to compare what they charge. Check each window type's quality against the price to find the most budget-friendly option.
  • Consider a different window style: If high-end models stand out to you visually, think about what you admire most about them and then explore reasonable alternatives. When optimizing natural light inside and catching views are your priorities, picture windows check the same boxes at friendlier pricing than bay windows.

Our methodology for selecting window replacement companies

The Homefront Local team employs a proprietary scoring algorithm that evaluates companies based on key factors you value, such as average customer review ratings and trustworthiness indicators. Our method for determining trust involves a comparative analysis of the number of reviews a company receives compared to its local competitors. This leads to companies that have earned more trust from your local community being awarded a higher score.

We review national window companies against our full methodology. We score window companies based on window options, energy-efficiency features, warranties, reputation and reviews, customer service and communication, and installation and other services.

Cost information in this article, unless otherwise noted, was calculated using RSMeans data from Gordian™. RSMeans is a construction cost database used by thousands of contractors to generate their project pricing.

Contact us at feedback@homefront.usatoday.com if you have questions or feedback on this article

Editorial note: The name “Homefront” refers to the alliance between USA TODAY and Home Solutions that publishes review, comparison, and informational articles designed to help USA TODAY readers make smarter purchasing and investment decisions about their home. Under the alliance, Homefront provides and publishes research and articles about home service and home improvement topics. Homefront has an affiliate disclosure policy. The opinions, analyses, reviews or recommendations expressed in this article are those of the Homefront editorial staff alone (see About Homefront). Homefront adheres to strict editorial integrity standards. The information is believed to be accurate as of the publish date, but always check the provider’s website for the most current information. Go back to top

Our editors may use AI as an input tool to tailor information in local markets. All content goes through a rigorous research and review process led by our team of writers and editors.

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