20 Best Window Companies in Frederick, CO (2024 Reviews)

If you’re looking to upgrade to new windows, our guide to the best window installation companies can help.

We analyzed all the top-rated window companies in Frederick 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 review of the top window replacement companies in Frederick may not seem like the most interesting article on EcoWatch, but trust us, windows have more of an impact on your life than you might realize. When it’s the middle of summer, your old and leaky windows could be making your home harder to cool and more uncomfortable for you.

That’s not great for your wallet or the environment, but one of the top window installation companies can help with that.

So if you’re constructing a new home, renovating or replacing your windows in Frederick, this is the best place to get started.

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 Frederick

The EcoWatch Reviews team examined dozens of installers in Frederick to find the best window installation companies for our readers. The installers we’ve included in this article scored best in our categories: energy-efficient offerings, customer service, price, availability 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 offers windows expertise in Frederick. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window business for about 27 years. The company has plenty of positive reviews from customers online.

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

Window World is an Energy Star partner offering 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 make sure to ask your Window World representative when inquiring about services.

How much does Window World cost in Frederick?

Prices aren’t mentioned on Window World’s website, but it's known for offering some of the most affordable window installations around. The best way to get more accurate information is to request a free 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 offers the best availability in Frederick. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window business for about 27 years. The company has plenty of positive reviews from customers online.

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

Renewal by Andersen is an Energy Star partner offering 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 make sure to ask your Andersen representative when inquiring about services.

How much does Renewal by Andersen cost in Frederick?

Prices aren’t mentioned on Andersen’s website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. The best way to get more accurate information is to request a free quote from the company.

We strive to stay unbiased and transparent by including pros and cons for each provider. Additionally, any partnerships do not affect our reviews.

More Window Companies in Frederick

Renewal by Andersen Window Replacement

Longmont, CO
4.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

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

Website: https://fortcollinswindow.com/
Address: 14330 Longs Peak Ct, Longmont, CO 80504
Phone: (970) 305-5060

Champion Replacement Windows of Denver

Denver, CO
4.4
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

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

Website: https://www.championwindow.com/Denver/
Address: 10035 E 40th Ave Suite 400, Denver, CO 80238
Phone: (303) 800-2129

Champion Replacement Windows of Ft. Collins

Loveland, CO
4.5
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

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

Website: https://www.championwindow.com/Ft-Collins/
Address: 5850 Byrd Dr, Loveland, CO 80538
Phone: (970) 744-2604

Power Home Remodeling

Centennial, CO
4.4
★★★★★
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options

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

Services Offered

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

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

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

Services Offered

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

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

WestPro | Roofing, Siding, Windows

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

Services Offered

  • Service icon Glass Doors
  • Service icon Skylights
  • Service icon Storm/Impact Windows
  • Service icon Window Replacement/Installation

Website: https://westproroofing.com/
Address: 1321 Sherman Dr, Longmont, CO 80501
Phone: (303) 834-9236

New Windows for America

Brighton, CO
4.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options

Website: https://windowsam.com/
Address: 33 N Main St, Brighton, CO 80601
Phone: (303) 920-0175

Slade Glass Co.

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

Services Offered

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

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

BlueBird Windows & Doors

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

Services Offered

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

Website: https://www.gobluebirdco.com/
Address: 1200 Diamond Cir Unit J, Lafayette, CO 80026
Phone: (303) 810-2888

Rocky Mountain Glass & Shower LLC

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

Services Offered

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

Website: http://www.rmglass.com/
Address: 13631 N 115th St, Longmont, CO 80504
Phone: (970) 347-9710

K&G Window Pros

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

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: https://kgwindowpros.com/
Address: 203 Telluride St Suite 850, Brighton, CO 80601
Phone: (720) 328-2786

A&M WINDOW SERVICE

Northglenn, CO
4.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

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

Website: http://amwindow.com/
Address: 405 W 115th Ave Unit 2, Northglenn, CO 80234
Phone: (303) 450-2200

Josh Brooks Construction and Renovation

Longmont, CO
4
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Skylights

Website: https://joshbrooksconstructionllc.com/
Address: 2204 18th Ave Suite 227, Longmont, CO 80503
Phone: (720) 435-4976

Performance Windows

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

Services Offered

  • Service icon Window Replacement/Installation

Website: https://www.goperformancewindows.com/
Address: 590 Burbank St, Broomfield, CO 80020
Phone: (720) 440-2168

On The Spot Window & Door Services

Thornton, CO
3.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

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

Website: http://onthespotwindows.com/
Address: 2967 E 151st Pl, Thornton, CO 80602
Phone: (303) 907-2046

Carlson Siding & Construction

Thornton, CO
3.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

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

Website: https://www.carlsonsiding.com/
Address: 13395 Olive St, Thornton, CO 80602
Phone: (720) 837-4725

1-833-MYFIXIT.com

Broomfield, CO
3.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.1-833-myfixit.com/
Address: 2205 W 136th Ave ste 106-357, Broomfield, CO 80023
Phone: (833) 693-4948

Glass Doctor Home + Business of Boulder

Boulder, CO
4.1
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

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

Website: https://glassdoctor.com/boulder-home-business
Address: 5649 Arapahoe Ave Unit N, Boulder, CO 80303
Phone: (303) 444-4527
Frederick Window Cost Calculator

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

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

  • Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.
  • Save on power bills: The Department of Energy estimates that heat gained or lost via windows makes up around 25-30% of energy use in your home. Installing energy-efficient windows can help decrease that number, which helps you save more on your bills.
  • Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its value, especially if you have an older home.
  • Decrease your carbon footprint: In Frederick, you can lower your indirect greenhouse gas emissions by about 460 pounds per year once you install energy-efficient windows.

Estimated Cost of Window Replacement in Frederick

Windows come in all shapes and sizes, so costs and services will differ greatly. Here are the typical costs and the primary services that you can find from window installation companies.

How Much Do New Windows Cost?

Generally, homeowners in Frederick can expect that most replacement window installations will range from $250 to $1,200, with the average cost at about $600. Costs will vary considerably based on the number of windows you need, the current condition of your home, the quality of your products and your location. A lot of window companies also offer replacement door installations and other add-ons like coating, shutters, baths and more. Additional services will increase your overall project costs.

Keep in mind that energy-efficient windows may have a higher price, but Energy Star predicts the upgrade will save you between $101 and $583 per year when installing single-pane windows and between $27 and $197 a year when replacing double-pane, clear glass windows. These savings vary depending on your local climate, energy rates and individual home characteristics.

Costs will also vary based on the material of your frame. Aluminum frames have the lowest price. They’re sturdy, light and maintenance-free, but provide poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made using wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They’re also aesthetically pleasing and offer decent insulation for your home.

What Services do Window Installers Offer?

The first step of a window replacement is to think about whether you need a full-frame or pocket installation.

Full-frame installations involve replacing the entire window — the sill, frame, trim and all. These are most common when you want a new style for your windows or when it has a great amount of deterioration. Full-frame installations are more comprehensive and will increase overall costs. A pocket installation entails replacing a window within the frame that’s already there. So, instead of removing the whole window and rebuilding it, the contractor will just put the replacement window (also called a retrofit or insert window) into the frame.

Your window installation company can help you decide which type of installation you need.

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 Frederick

In our hunt to find the most reliable, eco-friendly window installers in Frederick, the EcoWatch team chose the above companies as the top window installation companies in the city. We’ve decided to review the best window installers in Frederick primarily based on their energy efficient offerings, as it’s what’s best for the environment and for you as a homeowner. Energy Star certified windows can cut your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

Since this is a guide for Frederick, we gave more points to companies that cover the city. There are certainly reputable providers that didn’t make the list because they wouldn’t be able to serve homeowners in Frederick.

Work Quality

We’re certain that you’re looking for a company to do a great job installing windows. We’ve vetted each company included on this list to make sure its technicians are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.

Customer Reviews

Customer feedback is another very important review factor. If most customers don’t have nice feedback 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 try to keep costs low when possible. When analyzing providers’ prices, 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 to many homeowners. That’s why window installation companies with lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Last but not least, we like to see companies that have a good track record in the industry. Window installers that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.

Frederick, CO Window Replacement FAQs

What is the average cost to install new windows?

The national average cost to replace a window is about $600 but can range from $200 to $1,200, depending on several factors. The price is typically dependent on the location of your property, the size of the window and the type and material of the window. Also, bear in mind 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?

There are several different kinds of windows you can get for your house, such as double-hung and single-hung windows, picture windows, slider windows, bay windows, awning windows, transom windows and casement windows.

When should I use a window installation company?

You should use a window installation professional whenever you want to upgrade your windows. Installing windows is a complicated process that can take a lot of time, so it’s best handled by the professionals.

How do you know it’s time to replace your windows?

Windows generally last around 20 to 30 years, but anytime you see damage on your windows, it’s a good time to have them looked at by an expert to see if they need any repairs or replacements.

Should I replace my windows all at the same time?

If your windows are greater than 20 years old, it’s probably time to replace all of them. At that point, they are usually less efficient, draftier and/or more damaged than new windows. Doing your windows all at once will involve less paperwork and less time.