20 Best Window Companies in Sussex, WI (2025 Reviews)
Are you thinking of upgrading your windows? Our list of the best window installation companies can help you narrow down which one to choose.
We analyzed all the top-rated window companies in Sussex and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
Whether you're doing renovations or have damaged windows, windows play a key role in conserving your home's energy. According to the Department of Energy, heat or cool air lost through old or damaged windows could account for 25-30% of residential energy climate control use.
Fortunately, saving you money with upgraded windows also helps our goals of conserving energy and the resources it takes to produce it.
We’ve made a list of the top installation companies to help you in your search, so you can not only enjoy brand-new windows, but also save money on your electricity bills.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best Window Installation & Replacement Companies in Sussex
The EcoWatch team assessed many window companies in Sussex to find the top ones for our readers. We assessed the installers on their energy-efficient offerings, price, coverage area, customer service, local experience 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 offers windows expertise in Sussex. Window World has around 27 years of experience in the window installation business. Hundreds of positive reviews from customers online back the company's reputation.
If you’re looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital, this may be the provider for you.
Energy Efficiency of Window World WindowsWindow World’s commitment to sustainability can be seen in its energy-efficient window offerings. 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 Sussex?Although prices are not readily available on Window World’s website, it's known for offering some of the most affordable window installations around. The best way to know for sure is to request a free quote from the company.

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 offers the best availability in Sussex. Andersen has around 27 years of experience in the window installation business. Hundreds of positive reviews from customers online back the company's reputation.
If you’re looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, this may be the provider for you.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen’s commitment to sustainability can be seen in its energy-efficient window offerings. 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 Sussex?Although prices are not readily available on Andersen’s website, 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 know for sure is to request a free quote from the company.
We’ve recommended providers with shining reputations, but bear in mind that these are national companies, so the quality of service may differ depending on your local crew. We have tried to stay unbiased and transparent by listing pros and cons for each company reviewed.
More Window Companies in Sussex
Renewal by Andersen of Milwaukee Waukesha Showroom
Waukesha, WIFree assessment
Good Customer Service
Educational Website
Services Offered
Bay Windows
Energy-Efficient Options
Skylights
Double-Hung
Window Replacement/Installation
Glass Doors
Custom Window Designs
Champion Replacement Windows of Milwaukee
New Berlin, WIFree assessment
Price Transparency
Good Customer Service
Services Offered
Glass Doors
Double-Hung
Bay Windows
Window Replacement/Installation
Champion Replacement Windows of Madison
Madison, WIGood Customer Service
Free assessment
All products made or sourced in the USA
Transparent pricing and no hidden fees
Price Transparency
Limited lifetime warranty
Services Offered
Bay Windows
Double-Hung
Window Replacement/Installation
Glass Doors
Home Window Repair & Replacement
Germantown, WIEducational Website
Free assessment
Price Transparency
Good Customer Service
Services Offered
Storm/Impact Windows
Window Replacement/Installation
Energy-Efficient Options
Window Repair
Wood Frames
Glass Repair
Tempered Glass
Vinyl Frames
Glass Doors
Double-Hung
Metal Frames
Screen Repair
Window Repair & Glass Replacement Company
Oak Creek, WIEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Screen Repair
Wood Frames
Tempered Glass
Metal Frames
Double-Hung
Storm/Impact Windows
Vinyl Frames
Window Replacement/Installation
Energy-Efficient Options
Window Repair
Glass Repair
Glass Doors
Exceptional Exteriors LLC
Stoughton, WIFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Glass Doors
RNB Design Group LLC
Germantown, WIEducational Website
Good Customer Service
Free assessment
Price Transparency
Timely Service
Services Offered
Glass Doors
Double-Hung
Window Replacement/Installation
Glass Showers
Energy-Efficient Options
Window Repair
Bay Windows
Zenith Roofing and Construction
Waukesha, WIFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Skylights
Window Replacement/Installation
Argo Glass & Windows - Home Window Repair & Glass Replacement
Milwaukee, WIEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Glass Repair
Metal Frames
Window Repair
Storm/Impact Windows
Vinyl Frames
Double-Hung
Wood Frames
Window Replacement/Installation
Energy-Efficient Options
Tempered Glass
Screen Repair
Glass Doors
Absolute Quality Glass
New Berlin, WIPrice Transparency
Free assessment
Services Offered
Window Replacement/Installation
HomeSealed Exteriors, LLC
New Berlin, WILifetime workmanship warranty
Free assessment
Free in-home consultations
Online billing and payments
Price Transparency
Educational Website
Good Customer Service
Services Offered
Glass Doors
Bay Windows
Energy-Efficient Options
Double-Hung
Window Replacement/Installation
Four Leaf Roofing & Windows
New Berlin, WIPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Bay Windows
Total Glass And Paint
Hartford, WIFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Window Repair
Screen Repair
Glass Repair
Energy-Efficient Options
Glass Showers
Window Replacement/Installation
Mirrors
Absolute Restorations
Milwaukee, WIGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Brighter Concepts Ltd - Solatube, RediLights, Indow Windows
Milwaukee, WIFree assessment
Educational Website
Price Transparency
Services Offered
Skylights
Storm/Impact Windows
Window Replacement/Installation
Window Depot USA of Milwaukee
St Francis, WIEducational Website
Price Transparency
Good Customer Service
Timely Service
Free assessment
Services Offered
Energy-Efficient Options
Glass Doors
Vinyl Frames
Triple Pane Glass
Double-Hung
Window Replacement/Installation
Glass Showers
Bay Windows
EZegress Windows
Lake Geneva, WIPrice Transparency
Timely Service
Free assessment
Good Customer Service
Services Offered
Double-Hung
Window Replacement/Installation
Wisco Roofing and Windows
Janesville, WIEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
LDS Renovations
Grayslake, ILPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Window Repair
Infinity Exteriors
Madison, WIEducational Website
Lifetime workmanship warranty
Price Transparency
Free assessment
3D home visualizer
Free in-home consultations and estimates
Good Customer Service
Services Offered
Wood Frames
Energy-Efficient Options
Window Replacement/Installation
Bay Windows
Calculate how much you can expect to pay for window installation and replacement in Sussex, WI 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 Sussex Saves You Money
By switching to energy-efficient windows, you can take advantage of several benefits, including:
- Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes usually have windows that are outdated, leaky or potentially even damaged in some way. Upgrading your windows could help raise the value of your property if you decide to sell.
- Decrease your carbon footprint: You can reduce your indirect greenhouse gas emissions by about 12% after you install Energy Star certified windows. In Sussex, that’s about 497 pounds per year on average.
- Save money 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. Switching to energy-efficient windows can help decrease that number, which helps you save some money on your bills.
- Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which filter out harmful UV rays, reducing fading of your furniture, carpet and other valuables.
Estimated Cost of Window Replacement in Sussex
Windows come in various shapes and sizes, so costs and services will differ remarkably. Here are the average costs and services that you’ll find from the average window installation company.
How Much Do New Windows Cost?
The average cost to install one window is about $600 but can range anywhere from $200 to $1,200. Costs will differ significantly depending on your location, the number of windows you need, the current condition of your home and the quality of your products. A lot of window companies also offer door installations and other add-ons like coating, shutters, baths and more. Additional services will increase overall project costs.
With windows, efficiency is one of the most important factors for many homeowners. High efficiency windows may cost more initially, but by increasing the efficiency of your home — especially during the winter — they can give you many years of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Sussex homeowners $483+ each year after replacing single-pane windows.
Another factor that affects the total cost is the material you choose for your frame. Aluminum frames are typically the least pricey and are sturdy and light, but they provide poor insulation. On the other hand, wood frames are the most expensive because they are aesthetically pleasing and offer decent insulation. Fiberglass and vinyl frames provide good insulation 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 are necessary when you want to change the style of your windows or your window has significant deterioration. With this service, your installers will replace the whole window, including the frame, sill and trim. A pocket installation involves replacing a window within the existing frame. This means instead of tearing out the whole unit and rebuilding it, the window installer will just put the replacement window (also called a retrofit or insert window) into the frame.
Your window replacement company should be able to help you choose what’s best for your needs. In Sussex, the decision will mostly be based on the age of your windows and if there’s any moisture damage. Wood can decay if not maintained properly over the years, so it’s good to have a professional assess your frames and window sills.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
How We Choose the Best Window Installers in Sussex
The EcoWatch Reviews team is different from other reviewers because we examine these companies through a sustainability lens. We’ve reviewed the top window installation companies in Sussex mainly 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 have been shown to reduce your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:
Service Area
This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve Sussex so you can find the best window installation company near you.
Work Quality
When picking new windows, the quality and breadth of services often plays just as important of a role in overall efficiency and performance as the brand you choose. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
Customer feedback is another very important review factor. If most customers don’t have positive things to say 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 want to keep costs low when possible. When analyzing providers’ prices, we gave higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
Protecting your investment in new windows is important. For that reason, 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 years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Sussex, WI Window Replacement FAQs
How much does window installation cost?
The national average cost of installing one window is about $600 but can range from $200 to $1,200, based on a variety of factors. The price is often dependent on the location of your property, the type and material of the window and the size of the window. Also, remember that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
What type of window is the best for energy efficiency?
Generally, double-pane windows are more efficient than single-pane windows and windows that do not open are more efficient than windows that do. If you want to be sure you’ll have the most energy-efficient windows, look for models with the blue Energy Star certification — that means they’re certified energy-efficient by the U.S. Department of Energy.
When should I use a window installation company?
You should hire a window installation professional whenever you want to replace your windows. Installing windows is a involved process that can be difficult to do on your own, so it’s best left to the professionals.
Should I replace my windows all at once?
If you want to get more efficient windows and save money on your energy bills, replacing all of your windows at once is the only way to gain that benefit. On the other hand, if you have just one or two windows that are broken or drafty, you can replace just those.