20 Best Window Companies in Fort Collins, CO (2024 Reviews)

When the time comes to upgrade your windows, our list of the top window installation companies can help you find the right provider for you.

We analyzed all the top-rated window companies in Fort Collins 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 February 01, 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 guide on the best window replacement companies in Fort Collins may not seem like the most riveting article on the EcoWatch site, but trust us, windows impact your life more than you might think. When it’s the middle of winter, your old and leaky windows could be making your home more difficult to heat and more uncomfortable for you.

That’s also bad for the environment, as the extra energy used by drafty windows increases your carbon footprint.

We’ve put together this list of the best installation companies to help you in your research, so you can not only take advantage of brand-new windows, but also save money on your electricity bills.

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 Fort Collins

The EcoWatch team assessed many window installation companies in Fort Collins to find the top ones for our readers. We assessed the installers based on energy-efficient offerings, coverage area, price, local experience, customer service 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 has windows expertise in Fort Collins. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This provider has 27 years of experience in the windows business, and it has proved to be one of the most respected companies in Fort Collins. The company has many glowing reviews from customers online.

Window World may be the company for you if you're looking for one 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 and has 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 mention that you want energy-efficient windows to your Window World representative when inquiring about services.

How much does Window World cost in Fort Collins?

Prices are not available on Window World’s website because the cost of window replacement differs based on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. If you’d like to know for sure, you can inquire about a quote on the company’s website.

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 has the best availability in Fort Collins. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This provider has 27 years of experience in the windows business, and it has proved to be one of the most respected companies in Fort Collins. The company has many glowing reviews from customers online.

Andersen may be the company for you if you're looking for one 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 and has 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 mention that you want energy-efficient windows to your Andersen representative when inquiring about services.

How much does Renewal by Andersen cost in Fort Collins?

Prices are not available on Andersen’s website because 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. If you’d like to know for sure, you can inquire about a quote on the company’s website.

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 Manufactures products in-house
  • Pros icon Wide variety of products and services
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Limited service area
  • Pros icon Some installations carried out by third-party contractors
  • Pros icon Quality of service will depend on your area

Universal Windows Direct has the best warranty in Fort Collins. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This provider has 20 years of experience in the windows business, and it has proved to be one of the most respected companies in Fort Collins. The company has many glowing reviews from customers online.

Universal may be the company for you if you're looking for one 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 has 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 mention that you want energy-efficient windows to your Universal representative when inquiring about services.

How much does Universal Windows Direct cost in Fort Collins?

Prices are not available on Universal’s website because the cost of window replacement differs based on how many and what type(s) of windows you need. However, 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 to know for sure, you can inquire about a quote on the company’s website.

We aim to stay unbiased and transparent by describing pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.

More Window Companies in Fort Collins

Renewal by Andersen Window Replacement

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

Services Offered

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

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

Champion Replacement Windows of Ft. Collins

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

Services Offered

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

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

Champion Replacement Windows of Denver

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

Services Offered

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

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

Window World of Denver

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

Services Offered

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

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

DaBella

Cheyenne, WY
4.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Timely Service

Services Offered

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

Website: https://dabella.us/location/cheyenne/
Address: 4000 Airport Pkwy W, Cheyenne, WY 82001
Phone: (307) 284-2091

Window Nation

Aurora, CO
3.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

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

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

AllGuard Windows and Doors Fort Collins

Fort Collins, CO
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Double-Hung
  • Service icon Glass Doors
  • Service icon Wood Frames
  • Service icon Metal Frames
  • Service icon Fiberglass Frames
  • Service icon Vinyl Frames
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation

Website: https://allguardwindows.com/
Address: 456 S Link Ln, Fort Collins, CO 80524
Phone: (970) 481-5907

Glass Doctor of Fort Collins

Fort Collins, CO
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

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

Website: https://glassdoctor.com/fort-collins
Address: 2901 S College Ave, Fort Collins, CO 80525
Phone: (970) 223-9963

Nex-Gen Windows & Doors

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

Services Offered

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

Website: https://nexgenwindowsanddoors.com/
Address: 3600 Mitchell Dr Unit 50C, Fort Collins, CO 80525
Phone: (970) 593-1500

Ram Glass

Fort Collins, CO
4.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

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

Website: https://www.ramglass.com/
Address: 6132 S College Ave, Fort Collins, CO 80525
Phone: (970) 207-1914

The Glass Guru

Loveland, CO
4.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Tempered Glass
  • Service icon Energy-Efficient Options
  • Service icon Metal Frames
  • Service icon Wood Frames
  • Service icon Glass Doors
  • Service icon Custom Glass
  • Service icon Triple Pane Glass
  • Service icon Glass Repair
  • Service icon Mirrors
  • Service icon Screen Repair
  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames
  • Service icon Storm/Impact Windows
  • Service icon Glass Showers
  • Service icon Skylights
  • Service icon Window Repair
  • Service icon Fiberglass Frames

Website: https://www.theglassguru.com/fort-collins-co/
Address: 6712 N Franklin Ave, Loveland, CO 80538
Phone: (970) 294-7856

Black's Glass

Fort Collins, CO
4.6
★★★★★
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Window Repair
  • Service icon Storm/Impact Windows
  • Service icon Glass Showers
  • Service icon Glass Doors
  • Service icon Mirrors
  • Service icon Window Replacement/Installation

Website: http://www.blacksglass.com/
Address: 360 Jefferson St, Fort Collins, CO 80524
Phone: (970) 484-1505

Loveland Window Cleaning Services

Loveland, CO
5
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

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

Website: http://www.lovelandwindowcleaningservices.com/
Address: 1083 Winona Dr, Loveland, CO 80537
Phone: (970) 541-3787

3 Bidz Windows

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

Services Offered

  • Service icon Glass Doors
  • Service icon Wood Frames
  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames

Website: http://www.3bidzwindows.com/
Address: 1633 Foxtrail Dr, Loveland, CO 80538
Phone: (970) 219-6940

Window & Siding Outlet

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

Services Offered

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

Website: https://windowsidingoutlet.com/
Address: 3167 E Eisenhower Blvd C, Loveland, CO 80538
Phone: (970) 233-2263

Bellwether Windows, Siding, & Doors

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

Services Offered

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

Website: https://bellwetherhomes.com/
Address: 4030 Capstone Ct, Fort Collins, CO 80525
Phone: (970) 818-3050

Builders Supply

Fort Collins, CO
3.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Skylights
  • Service icon Wood Frames
  • Service icon Window Replacement/Installation

Website: https://www.windowbsi.com/
Address: 801 Smithfield Dr, Fort Collins, CO 80524
Phone: (970) 482-1320

All American Glass and Screen Company

Loveland, CO
3.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Glass Showers
  • Service icon Storm/Impact Windows
  • Service icon Glass Doors
  • Service icon Glass Repair
  • Service icon Energy-Efficient Options
  • Service icon Mirrors
  • Service icon Window Repair
  • Service icon Window Replacement/Installation
  • Service icon Double-Hung
  • Service icon Screen Repair

Website: http://www.wefixwindowsandscreens.com/
Address: 2956 Ginnala Dr b1, Loveland, CO 80538
Phone: (970) 699-2104

Anything Glass

Fort Collins, CO
2.9
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

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

Website: https://anythingglass.co/
Address: 209 E Skyway Dr Unit A, Fort Collins, CO 80525
Phone: (970) 568-2593

Endeavor Exteriors - Fort Collins

Loveland, CO
2.8
★★★★★
  • 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: https://www.endeavorexteriors.com/
Address: 5110 Granite St D, Loveland, CO 80538
Phone: (720) 571-4844
Fort Collins Window Cost Calculator

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

Energy-efficient windows can provide benefits in more than one way. Here are some reasons you may want to take the plunge and make the switch:

  • Protect your valuables from fading: When you switch to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will fade less because of their ability to filter out harmful UV rays.
  • Protect your investment: The older your home is, the more likely it is that switching to energy-efficient windows will benefit you. Older homes tend to have windows that are outdated, drafty or potentially even damaged in some way. Upgrading your windows could help increase the value of your home if you decide to sell.
  • Save on electricity bills: Once 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 house.
  • Reduce your carbon footprint: Decreasing how much energy you use also lowers your carbon emissions. You could reduce it by about 460 pounds.

Estimated Cost of Window Replacement in Fort Collins

Each window installation company offers various services and has varying costs depending on a few factors.

How Much Do New Windows Cost?

Although the average cost to replace a single window is around $600, it can range from $200 to $1,200. But costs differ considerably based on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also provide door replacements, which will make your project cost more.

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 a year when replacing single-pane windows and between $27 and $197 a year when installing double-pane, clear glass windows. Your savings will vary depending on your local climate, energy rates and individual home characteristics.

We recommend requesting free quotes from multiple window installers to find the one that works best for you.

What Services do Window Installers Offer?

Generally, there are two types of window replacement services companies provide: full-frame and pocket installations.

Full-frame installations are usually done when you want to change the style of your windows or your window has a lot of deterioration. With this service, your professionals will replace the full window, including the frame, trim and sill. A pocket installation entails replacing a window within the existing frame. So, instead of removing the whole window and rebuilding it, the window installer will just put the replacement window (also called a retrofit or insert window) into the frame.

If you’re unsure which window installation service you need, your installer can advise you. In general, the choice depends on factors such as the age and condition of the home, the type of building material, budget and time restrictions.

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 Fort Collins

The EcoWatch Reviews team differs from most reviewers, as we look at these companies through a sustainability lens. Along with energy efficiency, we evaluated several window installers in Fort Collins and assigned rankings based on the following methodology:

Service Area

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

Work Quality

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

Customer Reviews

Customer feedback is another super important review factor. If the majority of customers don’t have nice feedback about their experience with a certain company, you won’t see it featured on EcoWatch.

Cost

This one is a give-and-take: similar to other services, cheap window installers won’t always provide the most quality service. Still, we want to make sure we’re highlighting companies that offer a range of price and financing options so they’re accessible to most homeowners.

Warranty

Protecting your investment in new windows is important to many homeowners. That’s why window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

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

Fort Collins, CO Window Replacement FAQs

What is the typical cost to install new windows in a home?

The typical cost of replacing a single window can range from $450 to $650. There are several factors that influence how much it costs, which include the materials used in designing the windows, your property’s location, local labor costs, how energy-efficient the windows are, the number of windows and styles and sizes of windows.

What kind of window is the best for energy efficiency?

A window’s energy efficiency is influenced by several factors, such as the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are usually the most energy-efficient and are certified by the U.S. Department of Energy.

When should I use a window installation company?

Unless you’re handy and have the time needed to replace your own windows, we recommend hiring a professional installer. The process of installing windows is complex and can take anywhere from four to six hours for a single window. Although it’s tempting to try to save money by doing it yourself, hiring a professional is a faster, more efficient and safer option.

What time of year should I replace my windows?

Replacement windows can be installed at any time, but warmer weather is typically better. No matter when you install them, the contractors will take steps to make sure that too much hot or cold air doesn’t get into your house, so the temperature outside doesn’t necessarily matter that much. Most importantly, the weather should be dry.

Should I replace all my windows at once?

If you’re upgrading your windows because of energy-efficiency, replacing all your windows at the same time is the only way to see a noticeable difference. However, if you have just a few windows that are broken or drafty, you can replace just those.