Expert Advice On Improving Your Home

10 Best Window Replacement Companies in Denver, CO

Get matched with a top local pro.
Join over 640 homeowners that have gotten a free quote in the past week.

Written By David Cusick

Last Updated February 2024

Whether you're tackling home renovation projects or are simply in need of a change, upgrading your windows is a great plan. Your windows play a crucial role in your home's value and its energy efficiency. Damaged or outdated windows can cost you in power bills — about an extra $290 a year in Denver. The Department of Energy estimates that 25–30% of your house’s heat or cool air could be lost through your windows. Picking the best company for you is a big decision. That's why we've put together this list of the top window installation companies in Denver.

Our Recommended Providers

Top Pick
4.9/5
  • Great quality
  • Free assesment
  • Timely Service
Best Customer Service
4.3/5
  • Great customer service
  • Transparent pricing
  • Award winning company
Most Customizable
4.0/5
  • Holds high customer ratings
  • Offers energy-efficient products
  • Provides a lifetime labor warranty

Top 10 Best Window Replacement Companies in Denver

Renewal by Andersen Window Replacement

Renewal by Andersen Window Replacement Logo

Our Rating

User Rating

Write a Review
1401 W Bayaud Ave #7, Denver, CO 80223 (720) 263-7039 renewalbyandersendenver.com

Good customer service

Educational website

Price transparency

Free assessment

Services Offered

Custom window designs
Vinyl frames
Double-hung
Bay windows
Energy-efficient options
Window replacement/installation
Glass doors

Champion Replacement Windows of Denver

Champion Replacement Windows of Denver Logo

Our Rating

User Rating

Write a Review
10035 E 40th Ave Suite 400, Denver, CO 80238 (303) 800-2129 championwindow.com

Price transparency

Free assessment

Good customer service

Services Offered

Window replacement/installation
Double-hung
Bay windows
Glass doors

Champion Replacement Windows of Ft. Collins

Champion Replacement Windows of Ft. Collins Logo

Our Rating

User Rating

Write a Review
5850 Byrd Dr, Loveland, CO 80538 (970) 744-2604 championwindow.com

Price transparency

Good customer service

Free assessment

Services Offered

Double-hung
Bay windows
Window replacement/installation
Glass doors

Champion Replacement Windows of Colorado Springs

Champion Replacement Windows of Colorado Springs Logo

Our Rating

User Rating

Write a Review
4610 N Chestnut St, Colorado Springs, CO 80907 (719) 344-2661 championwindow.com

Price transparency

Good customer service

Free assessment

Services Offered

Window replacement/installation
Glass doors
Bay windows
Double-hung

Power Home Remodeling

Power Home Remodeling Logo

Our Rating

User Rating

Write a Review
7304 S Joliet St #100, Centennial, CO 80112 (303) 357-2484 powerhrg.com

Good customer service

Services Offered

Energy-efficient options
Window replacement/installation

Window World of Denver

Window World of Denver Logo

Our Rating

User Rating

Write a Review
480 E 76th Ave Bldg 5E, Denver, CO 80229 (303) 574-9594 windowworldcolorado.com

Timely service

Educational website

Good customer service

Price transparency

Free assessment

Services Offered

Double-hung
Glass doors
Window replacement/installation
Custom window designs
Bay windows
Energy-efficient options
Triple pane glass

DaBella

DaBella Logo

Our Rating

User Rating

Write a Review
6600 E Hampden Ave, Denver, CO 80224 (720) 619-8704 dabella.us

Good customer service

Timely service

Services Offered

Window replacement/installation
Double-hung
Glass doors
Vinyl frames

Window Replacement Denver

Window Replacement Denver Logo

Our Rating

User Rating

Write a Review
1480 N Humboldt St, Denver, CO 80218 (720) 701-2202 windowreplacementdenver.com

Price transparency

Educational website

Free assessment

Good customer service

Services Offered

Vinyl frames
Window replacement/installation
Custom window designs
Glass doors
Double-hung

Bellwether Windows, Siding, & Doors

Bellwether Windows, Siding, & Doors Logo

Our Rating

User Rating

Write a Review
1555 W Thomas Ave, Englewood, CO 80110 (303) 323-8578 bellwetherhomes.com

Price transparency

Educational website

Free assessment

Timely service

Good customer service

Services Offered

Window replacement/installation
Glass doors
Energy-efficient options
Fiberglass frames
Vinyl frames

United Windows & Siding

United Windows & Siding Logo

Our Rating

User Rating

Write a Review
12090 Ridge Rd Unit B, Wheat Ridge, CO 80033 (720) 535-4767 unitedwindowsandsiding.com

Price transparency

Educational website

Good customer service

Free assessment

Services Offered

Bay windows
Window replacement/installation
Double-hung
Vinyl frames
Energy-efficient options
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on window replacement companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

How Much Does Window Installation Cost In Denver?

The cost of window installation or replacement will be influenced by several factors, including how difficult your windows are to access or install, the number and size of the windows, and the materials you choose. On average, homeowners in Denver should expect to spend about $280 per window*. Below are additional cost breakdowns. *Cost data based on sample pricing for window installation from multiple retailers and adjusted for local cost of living.

When To Replace Windows

Installing new energy-efficient windows can significantly enhance your home's appearance, value, insulation, noise reduction, and comfort. Some clear indicators it's time to invest in new windows include the following:

  • Fogging between window panes, condensation issues, or rotting window frames that allow moisture intrusion into the home.
  • Drafts and cold air leaking in through old, loose-fitting windows.
  • High energy bills and a chilly house from poor insulation around windows.
  • Windows that are difficult to open, close, or lock properly due to age and wear.
  • Outdated and inefficient window styles that take away from your house's curb appeal.

How To Choose a Window Company

For a successful window replacement, you need to hire an installation contractor with proven expertise. Below, we outline the most important criteria for picking a window installer.

Experience

Look for well-established local companies with a long track record of experience successfully installing all types of windows. These providers are more likely to understand Denver's climate and your requirements. Ask for references from recent clients to confirm the quality of a company's work.

Certifications

Choose companies that have certifications from major window brands, and that have Fenestration and Glazing Industry Alliance (formerly AAMA) certification. Certification means they've been properly trained in installation best practices. Make sure installers are staff rather than subcontractors, and confirm the technicians doing your job are certified.

Reputation

Take time to read online reviews, check the Better Business Bureau (BBB), and request local references. Review customer feedback to confirm that the company consistently delivers good workmanship and service. Steer clear of companies with complaints of shoddy or unfinished work.

Process

A reputable window installer will be able to provide a complete project plan, precise timelines, clear expectations, and an overview of all material and installation options. Avoid companies that provide unclear quotes or schedules. Look for consistent contact through the whole process to avoid surprises further into the project.

Warranties

Look into window installers that provide installation guarantees on labor and materials. This demonstrates confidence in their work. Seek out companies with unlimited lifetime warranties that can be transferred to new homeowners.

Materials

Ensure that a company works with durable, energy-efficient window brands that work with your budget. Look for enhanced UV protection, design flexibility, and good energy ratings. Confirm the window materials have their own manufacturer warranties as well.

Frequently Asked Questions About Window in Denver, CO

In Denver, the best time to install windows is when temperatures are mild, generally in the spring or fall. These conditions enable installers to do their work with less worry about the weather.

The best type of replacement windows for your Denver home depends on the year your home was built –the average house in Denver was built around 1974. If your home was built a while ago, you may want to consider efficient windows such as double-glazed windows, which are designed to keep your home cool in the summer and warm in the winter. Wood frames also have a timeless look that's great for older homes. For more modern homes, you might want to consider vinyl windows, which are durable, affordable and have a modern look.

The most expensive windows are double-hung windows. They are more intricate than single-hung windows, which makes them more costly. Single-hung windows are the least expensive on the market. Aluminum and vinyl are the most affordable frame options.

It depends on your specific needs and budget, but generally it's recommended to replace all your windows at once if they're not energy efficient. Replacing all your windows at once guarantees that you'll get the most out of your energy efficiency and can potentially save you money in the long run. This is important in Denver, where the average energy bills are roughly $968 a year.

After window installation, it's important to check for any air leaks and make sure the windows are properly sealed. You should also clean the windows regularly to prevent debris from accumulating and causing damage. Additionally, you should inspect the window sills and frames regularly to make sure that the seals are not deteriorating or cracking.

Yes, many window companies offer payment plans for their services. Different companies have different financing options, so you should shop around to find the best option for you. Depending on your income level, which is a median of $78,177 a year in Denver, you may be able to qualify for special payment plans.

Getting windows installed by a professional can provide a number of benefits. Professional installers can ensure that your windows are properly fitted, weatherproofed, and insulated, minimizing air leakage and maximizing energy efficiency. Professional installers are also well-equipped with the necessary tools and techniques to get the job done, which can save you time and money.

Other Denver, CO Home Services