3 Best Window Companies in Gillette, WY (2024 Reviews)
If you’re thinking of getting new windows, our list of the top window installation companies can help.
We analyzed all the top-rated window companies in Gillette and selected the best 3 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
Although green energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your home’s energy efficiency can also have a large impact on home energy conservation. According to the Department of Energy, heat gained or lost through traditional, outdated windows could represent 25-30% of heating and cooling costs.
Replacement windows improve the insulation in your home, not only making you and your family more comfortable during the summer and winter, but also saving you money and helping the environment.
We’ve put together a guide on the best installation companies to help you in your research, so you can not only enjoy brand-new windows, but also save money on your energy bills.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in Gillette
The EcoWatch Reviews team assessed dozens of providers that serve the Gillette area to find the top window installation companies by our standards. We assessed the companies based on their energy-efficient offerings, customer service, coverage area, local experience, price and more.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World provides windows expertise in Gillette. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the window installation industry, and it has established itself as one of the best companies in Gillette.
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 WindowsThere are a wide variety of window types that Window World offers, some of which are Energy Star products. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Gillette?Window World doesn’t have any cost information available on its website, but it's known for offering some of the most affordable window installations around. If you’d like to know for sure, you can receive a quote on the company’s website.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
More expensive than competition
Renewal by Andersen provides the best availability in Gillette. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has 27 years of experience in the window installation industry, and it has established itself as one of the best companies in Gillette.
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 WindowsThere are a wide variety of window types that Renewal by Andersen offers, some of which are Energy Star products. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.
How much does Renewal by Andersen cost in Gillette?Andersen doesn’t have any cost information available on its website, but 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 receive a quote on the company’s website.
We’ve recommended companies with shining reputations, but note that these are national companies, so the quality of service may vary depending on your local crew. We have tried to stay unbiased and transparent by describing pros and cons for each company we reviewed.
More Window Companies in Gillette
Wyoming Building Supply
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Skylights
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Pella Windows & Doors of Sheridan
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Good Customer Service
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Educational Website
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Glass Doors
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Home Services at The Home Depot
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Calculate how much you can expect to pay for window installation and replacement in Gillette, WY using our customized window cost calculator.
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 Gillette Saves You Money
Upgrading to energy-efficient windows can improve the comfort of your home and help you save on energy bills. Here are more ways switching out your windows could help you:
- Save on power bills: Switching to energy-efficient windows lowers your energy bills by about 12% since you use less energy.
- Protect your valuables from fading: When you switch to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will be protected from fading due to their ability to filter out damaging UV rays.
- Reduce your carbon footprint: In Gillette, you can cut your indirect greenhouse gas emissions by about 1147 pounds per year when you upgrade to energy-efficient windows.
- Protect your investment: When your home is on the older side, your windows could also be outdated or leaky. Upgrading your windows is an important part of maintaining your property and its real estate value.
Estimated Cost of Window Replacement in Gillette
Each window replacement company offers varying services and has different costs based on several factors.
How Much Do New Windows Cost?
Generally, Gillette homeowners can expect their window replacements to range from $250 to $1,200. The average cost is at about $600. This is due to the fact that the cost of window installations are based on a variety of factors specific to your home, such as the size, material and number of windows you need to install, as well as where your property is located.
Keep in mind that energy-efficient windows may have a higher price, but Energy Star estimates the upgrade will save you between $101 and $583 per year when you replace single-pane windows and between $27 and $197 a year when you install double-pane, clear glass windows. Your exact savings will vary depending on your local climate, energy rates and individual home characteristics.
Another factor that affects the overall cost is the material of the frame you select. Aluminum frames are typically the least expensive and are sturdy and light, but they offer poor insulation. On the other hand, wood frames cost the most, as they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.
What Services do Window Installers Offer?
There are generally two kinds of window installation services: full-frame and pocket installations.
Full-frame installations involve replacing the full window, including the frame, sill and trim. You most likely need a full-frame installation when you want a new style or your window has significant rot or deterioration. Because these installations are more involved, they will raise the overall cost. Pocket installations are on the simpler end and won’t cost as much because they entail merely replacing the window within its existing frame. But if the frame has any damage or rot, you should opt for a full-frame installation instead.
If you’re still debating which kind of installation you should get, you can ask your installer and get their recommendation. The choice mostly depends on the age of your window frames and if there’s any damage present.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
How We Choose the Best Window Installers in Gillette
The EcoWatch Reviews team is different from most reviewers because we look at these companies through a sustainability lens. Along with energy efficiency, we evaluated each installer and assigned rankings using the following methodology:
Service Area
Because this is a guide for Gillette, we paid more attention to companies that cover the city. There are certainly reputable providers that didn’t make our list because they wouldn’t be able to serve homeowners in Gillette.
Work Quality
We’re willing to bet that you’re looking for professionals who do a great job installing windows. We’ve vetted each company in our guide to make sure its technicians are well-qualified and that the company has received plenty 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 positive feedback about their experience with a certain window installation company, it won’t be featured on EcoWatch.
Cost
This one is a give-and-take: as with other services, cheap window installers may not provide the highest quality service. On the other hand, we want to ensure we’re highlighting companies that provide a spectrum of price and financing options so they’re accessible to most homeowners.
Warranty
Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to Gillette’s climate, homeowners need to be wary of low efficiency, water damage and rot. We factored in local experience to reflect the ability of Gillette window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Gillette, WY Window Replacement FAQs
What is the average cost to install new windows?
The typical cost to install a window can range between $450 and $650. There are many factors that affect the price, which include local labor costs, the materials used in designing the windows, your property’s location, how energy-efficient the windows are, the number of windows and styles and sizes of windows.
What are the kinds of windows?
The most common kinds of windows for homes include: slider windows, casement windows, bay windows, double-hung and single-hung windows, picture windows, awning windows and transom windows.
Can you replace your own windows?
Even though you can install your own windows, doing so is time-consuming and requires a lot of experience with home improvement projects. Using a window installation company can help ensure that the job is done properly and that you can avoid spending the time and effort of doing it yourself.
When is the best time of year to replace windows?
Replacement windows can be installed at any time, but warmer weather is typically better. Regardless of when you install them, the contractors will take steps to ensure that too much hot or cold air doesn’t get into the home, so the temperature outside isn’t necessarily a big factor. What’s more important than the temperature is that the weather should be dry.
Should I replace all my windows at once?
If your windows are more than 20 years old, you most likely need to replace all of them. By that point, they are typically less efficient, draftier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less stress.