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Best Window Replacement Companies in Westminster, CO

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  1. Home
  2. Local Pros
  3. Window Replacement
  4. CO
  5. Westminster
Written By Max Peterson | Last Updated: February 05, 2024

Replacement windows can shield your home from water damage, increase its energy efficiency, and give it extra visual flair. Local installers recognize that homeowners would rather not pay a fortune for window replacement in Westminster. They work with affordable materials that don't compromise on durability.

Top Pick
  • Full-service installation
  • Large window selection
  • Nearly 30 years of experience
Best Financing
  • Full-service installation
  • In-house, U.S.-made products
  • More than 70 years of experience
Most Customizable
  • Full-service remodeling
  • 96% satisfaction rate
  • More than 30 years of experience

Top 10 Westminster Window Installation Companies

By working with one of these best companies for window replacement in Westminster, you'll reap the benefits of new windows in no time.

The This Old House Reviews Team assessed scores of window providers in and around Westminster. We took into account the following metrics to determine the best window replacement providers:

  • Customer reviews and recommendations
  • Energy-efficiency guarantees
  • Professional experience and licensure
  • Services and warranties
  • Product quality

Champion Replacement Windows of Denver Logo

Champion Replacement Windows of Denver

Based on 1,557 customer reviews.

Services Offered

Window Replacement/installation Double-Hung Glass Doors Bay Windows


  • Free assessment
  • Good customer service
  • Price transparency
10035 E 40th Ave Suite 400, Denver, CO 303-800-2129 championwindow.com
Champion Replacement Windows of Ft. Collins Logo

Champion Replacement Windows of Ft. Collins

Based on 777 customer reviews.

Services Offered

Window Replacement/installation Glass Doors Bay Windows Double-Hung


  • Price transparency
  • Free assessment
  • Good customer service
5850 Byrd Dr, Loveland, CO 970-744-2604 championwindow.com
Power Home Remodeling Logo

Power Home Remodeling

Based on 2,686 customer reviews.

Services Offered

Window Replacement/installation Energy-Efficient Options


  • Good customer service
7304 S Joliet St #100, Centennial, CO 303-357-2484 powerhrg.com
Window World of Denver Logo

Window World of Denver

Based on 342 customer reviews.

Services Offered

Triple Pane Glass Double-Hung Bay Windows Window Replacement/installation Energy-Efficient Options Glass Doors Custom Window Designs


  • Price transparency
  • Good customer service
  • Free assessment
480 E 76th Ave Bldg 5e, Denver, CO 303-574-9594 windowworldcolorado.com
DaBella Logo


Based on 844 customer reviews.

Services Offered

Window Replacement/installation Glass Doors Double-Hung Vinyl Frames


  • Timely service
  • Good customer service
6600 E Hampden Ave, Denver, CO 720-619-8704 dabella.us
True View Windows & Glass Logo

True View Windows & Glass

Based on 345 customer reviews.

Services Offered

Window Repair Tempered Glass Mirrors Window Replacement/installation Glass Showers Glass Doors


  • Good customer service
  • Price transparency
  • Timely service
3200 W 71st Ave #20, Westminster, CO 720-431-8783 trueviewglass.com
BlueBird Windows & Doors Logo

BlueBird Windows & Doors

Based on 294 customer reviews.

Services Offered

Glass Doors Window Replacement/installation Bay Windows Energy-Efficient Options Double-Hung


  • Free assessment
  • Educational website
  • Price transparency
1200 Diamond Cir Unit J, Lafayette, CO 303-810-2888 gobluebirdco.com
United Windows & Siding Logo

United Windows & Siding

Based on 52 customer reviews.

Services Offered

Bay Windows Energy-Efficient Options Window Replacement/installation Vinyl Frames Double-Hung


  • Educational website
  • Good customer service
  • Free assessment
12090 Ridge Rd Unit B, Wheat Ridge, CO 720-535-4767 unitedwindowsandsiding.com
Colorado Glass and Mirror LLC Logo

Colorado Glass and Mirror

Based on 171 customer reviews.

Services Offered

Glass Showers Custom Glass Window Replacement/installation Window Repair Mirrors


  • Good customer service
  • Free assessment
  • Price transparency
1400 W 70th Ave, Denver, CO 303-477-0082 mycoloradoglass.com

More Local Window Companies

Smart Windows

User Reviews: 4.6/5 

740 S Pierce Ave # 5
Louisville, CO 80027

Acorn Glass

User Reviews: 4.6/5 

9005 W 44th Ave
Wheat Ridge, CO 80033

DMD Window & Door

User Reviews: 4.6/5 

4251 Kipling St #190
Wheat Ridge, CO 80033

Gravina's Window Center of Littleton

User Reviews: 4.6/5 

1500 W 38th Ave
Denver, CO 80211

K&H Home Solutions

User Reviews: 4.6/5 

6870 W 52nd Ave #107
Arvada, CO 80002

KV Windows Inc.

User Reviews: 4.5/5 

3660 W 73rd Ave
Westminster, CO 80030

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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Facts about Westminster
Annual Energy Efficient Windows Savings: $448
Average Max Temp: 60°F
Average Min Temp: 40°F
Average Daily Sunlight: 61%
Average Annual Snowfall: 60.4"
Average Monthly Precipitation: 1.41"

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

How To Choose a Window Company in Westminster

Each window installer has varying offerings and approaches. To simplify the company search, keep these factors in mind:

Window Cost by Type

When it comes to window replacement, cost-effectiveness is paramount. Each window you purchase should offer unparalleled durability at a reasonable price point. Choosing cheap windows could actually raise your overall cost, due to their reduced lifespan and more intensive maintenance needs. The total cost of your window replacement will hinge on the particular sizes, styles, and materials you need. Transom windows are inexpensive with their simple size and straightforward form factor, while a sweeping, custom-size picture window will cost more. It's wise to consult a reliable installer to figure out your most suitable options.

To help you form a rough estimate, this table shows the typical cost of the most common residential window types.

Window Types Average Cost
Arched $231-$1418
Awning $334-$931
Bay $770-$5716
Custom $343-$952
Casement $266-$1545
Double-hung $124-$804
Egress $228-$570
Glass Block $45-$578
Picture $200-$1482
Single-hung $90-$1524
Skylight $114-$1376
Sliding $262-$1333
Storm $54-$376
Transom $279-$584

Window Material Cost

Materials also help determine a window's cost. You might choose a material based on your energy efficiency goals, your desired look, and the local climate. For example, wood windows can give your home an organic design without breaking the bank, but you'll have to invest more toward maintenance. Aluminum and composite windows cost more up-front, but they're incredibly durable against the elements, so you'll spend far less on maintenance.

Window Types Average Cost
Aluminum $54-$1524
Composite $550-$1236
Fiberglass $90-$770
Vinyl $185-$1715
Wood $275-$1545

Other Window Replacement Costs

Your total cost for window replacement will also include applicable warranty fees, permit application fees, and labor. Make sure to discuss each of these aspects with a sales representative before committing to a window company.

Experience and Training

Browse a company's website and chat with a representative to learn more about its product and service offerings, pricing, and warranties. Many companies also keep online portfolios that exhibit past projects.

Ensure that the company specializes in window replacement. The more specific training its staff has, and the longer it has been in business, the more likely it will provide high-quality workmanship.

Licensing and Credentials

Colorado's contractor licensing requirements are distinct compared to many states. There is no single regulatory body that licenses window companies, but they might still need licenses from the cities and counties in which they operate. Colorado Springs and Denver license window installers, treating them as either general contractors or building contractors. For other areas, contact your local authorities.

Types of Windows Offered

There are many replacement window types you can choose from, and it's important to find a company that specializes in the ones you want. Browse a company's website and reviews for any of these types:

  • Awning
  • Bay
  • Bow
  • Casement
  • Crank-out
  • Custom
  • Double- or single-hung
  • Egress
  • Garden
  • Jalousie
  • Picture
  • Sliding
  • Skylight
  • Specialty
  • Storm
  • Transom
  • Vent
Also, check the kind of window framing materials a company works with. Each material has different price points, life spans, and energy performance capabilities. Common materials include aluminum, vinyl, fiberglass, composite and wood.

Customer Feedback

Perhaps the best way to evaluate window companies for your job is to check what previous customers have said about them. You can find customer reviews on websites like the BBB, Google, Yelp, and Trustpilot. Speak with people you know who have used a company you're interested in, and ask a representative for a copy of its reference list.

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Frequently Asked Questions About Window Replacement in Westminster

Why should I hire a professional to install or replace my windows?

By hiring an expert, you don't need to worry about measurement missteps or not having the right tools. A window installation crew is well-equipped with the right tools and skills to do the job safely and accurately. You can also get fast, informed answers to your questions and personalized assistance to maximize your new windows' potential.

Are there tax incentives for installing energy-efficient windows?

Yes. No matter where you're located, you can claim a federal tax credit of up to $3,200 per year on up to 30% of your window replacement's cost. Additionally, most state and some local jurisdictions offer financial incentives of their own. We recommend checking with your local government for specific information about tax incentives available in your area.

What's different between a new construction window and a replacement window?

Replacement windows, also known as retrofit windows, are tailored for homes that already have existing windows. They fit into place in the existing window opening, without the need to remove or alter the surrounding materials or structure. New construction windows, on the other hand are created for installing in a newly built home or during a significant renovation project. These windows include a nailing fin, which is a thin strip of metal or vinyl that protrudes from the frame. It's used to attach the window directly to the framing of the house, providing a secure fit.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

More Window Resources

National Windows Company Ranking Methodology


Energy Star