20 Best Window Companies in Fort Collins, CO (2025 Reviews)

How Installing Energy-Efficient Windows in Fort Collins Saves You Money

There are quite a few perks of switching to energy-efficient windows. Some reasons you may want to consider making the switch include the following:

• 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 Older homes tend to have windows that are outdated, drafty or potentially even damaged in some way.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

Let’s take a look at the cost of installing new windows and the types of services offered by installers.

How Much Do New Windows Cost?

On average, Fort Collins homeowners can expect their window installations to range from $250 to $1,200. The most common installations sit at around $600. Costs will differ considerably based on the current condition of your home, the quality of your products, your location and the number of windows you need. Many window companies also offer replacement door installations and other add-ons like coating, baths, shutters and more. Additional services will increase your overall project costs.

With windows, efficiency is the most important factor for most homeowners. Windows with higher efficiency may cost more off the bat, but by increasing the efficiency of your home — particularly during the winter — they can give you decades of energy savings. According to Energy Star, buying certified energy-efficient windows can save Fort Collins homeowners $522+ each year after replacing single-pane windows.

We advise getting free quotes from multiple window installation companies to find the right windows and the company that works best for you.

What Services do Window Installers Offer?

In regard to window replacements, in general there are two kinds that your installer will offer: full-frame and pocket installations.

Full-frame installations entail replacing the total window, including the frame, sill and trim. Full-frame installations are necessary when you want a new style or your window has significant deterioration. Because these installations are more involved, they will increase the total cost. A pocket installation entails replacing a window within the old frame. So, instead of taking out the whole window and reinstalling it, the contractor will just slide the replacement window (also called a retrofit or insert window) into the frame.

Your window installation company will be able to advise you on the best type for your project. In Fort Collins, the decision will mostly be influenced by how much damage there is currently and the age and condition of your existing frames.

How We Choose the Best Window Installers in Fort Collins

In our hunt to find the most reliable, eco-friendly window installers in Fort Collins, the EcoWatch team landed on the above companies as the top window installation companies in the city. We have evaluated the best window installers in Fort Collins mostly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to reduce your electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve a wide variety of states and cities so you can find the right window installation company near you.

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 in our guide to ensure its contractors are well-qualified and that the company has received lots of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed trends in recent customer feedback to find the companies with the most customer satisfaction, weighted by sample size. Customer satisfaction might be the most important factor, as it indicates the quality of services across most other categories, including cost, warranty, professionalism, quality of parts, quality of installation and more.

Cost

This one is a give-and-take: as with most services, cheap window companies are not going to provide the most quality service. On the other hand, we want to ensure we’re highlighting companies that offer a variety of price and financing options so they’re accessible to most homeowners.

Warranty

As discussed previously, windows are a significant investment, so you’ll want to make sure that investment is protected. Window installation companies that give you lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

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