20 Best Window Companies in Portage, WI (2025 Reviews)
If you’re thinking of getting new windows, our guide to the top window installation companies can help.
We analyzed all the top-rated window companies in Portage 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
A guide on the top window installation companies in Portage may not seem like the most interesting article on the EcoWatch site, but trust us, windows have a more direct impact on your life than you might think. Potential leaks or drafts from your windows can make your AC or heater work extra hard in the summer or winter.
Installing upgraded, efficient windows on your house can help you save money every month on your electric bills — and you can help the environment, too.
Because windows have such a large impact on your home, selecting the best company for you is a big choice to make. That’s why the EcoWatch team has put together this list of the top window installation companies, so you can more easily make an informed decision.
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 Portage
The EcoWatch team assessed several window installation companies in Portage to find the best ones for our readers. The companies we’ve included in this article scored best in our categories, including energy-efficient offerings, customer service, price, availability 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 Portage. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has about 27 years of experience in the windows industry, and it currently provides services to 200 locations nationwide. The provider has hundreds of glowing 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 WindowsWindow World has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want Energy Star windows when inquiring. 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 Portage?Window World does not detail prices on its website, but it's known for offering some of the most affordable window installations around. You can inquire about a free quote on its website for more information about the cost.

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 Portage. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the windows industry, and it currently provides services to nearly every state except Mississippi and West Virginia. The provider has hundreds of glowing 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 WindowsRenewal by Andersen has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want Energy Star windows when inquiring. 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 Portage?Andersen does not detail prices 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. You can inquire about a free quote on its website for more information about the cost.
We strive to remain unbiased and transparent by describing pros and cons for each provider. Additionally, any partnerships do not influence our reviews.
More Window Companies in Portage
Renewal by Andersen
Madison, WIFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Skylights
Double-Hung
Custom Window Designs
Bay Windows
Glass Doors
Window Replacement/Installation
Champion Replacement Windows of Madison
Madison, WILimited lifetime warranty
Free assessment
All products made or sourced in the USA
Transparent pricing and no hidden fees
Good Customer Service
Price Transparency
Services Offered
Double-Hung
Window Replacement/Installation
Bay Windows
Glass Doors
Exceptional Exteriors LLC
Stoughton, WIFree assessment
Educational Website
Good Customer Service
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Infinity Exteriors
Madison, WILifetime workmanship warranty
3D home visualizer
Free in-home consultations and estimates
Free assessment
Educational Website
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Wood Frames
Energy-Efficient Options
Bay Windows
Total Glass And Paint
Hartford, WIFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Screen Repair
Glass Showers
Window Repair
Glass Repair
Energy-Efficient Options
Window Replacement/Installation
Mirrors
Wisco Roofing and Windows
Janesville, WIEducational Website
Good Customer Service
Free assessment
Price Transparency
Services Offered
Energy-Efficient Options
Glass Doors
Window Replacement/Installation
Epic Painting & Exteriors
Madison, WIFull-service exterior remodeling
Good Customer Service
Price Transparency
Energy-efficient
Educational Website
Online home visualizer
Services Offered
Window Replacement/Installation
Duncan's Window & Door LLC
Oshkosh, WIPrice Transparency
Free assessment
Educational Website
Good Customer Service
Services Offered
Window Replacement/Installation
Martin Glass Company
Madison, WIFree assessment
Services Offered
Glass Doors
Tempered Glass
Storm/Impact Windows
Glass Showers
Window Repair
Mirrors
Screen Repair
Window Replacement/Installation
Energy-Efficient Options
Steadfast Remodeling, Inc.
Mauston, WIGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Glass Doors
Window Replacement/Installation
Window World of Fond du Lac
Fond du Lac, WIPrice Transparency
Educational Website
Good Customer Service
Free assessment
Services Offered
Double-Hung
Window Replacement/Installation
Bay Windows
Glass Doors
Pella Windows & Doors of Madison
Madison, WIFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Wood Frames
Glass Doors
Custom Window Designs
Double-Hung
Mad City Windows & Baths
Madison, WIGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Double-Hung
Bay Windows
Glass Showers
Window Replacement/Installation
Energy-Efficient Options
Vinyl Frames
Hometown Glass & Improvement Inc
Beaver Dam, WIEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Glass Doors
Glass Showers
Window Replacement/Installation
Glass Repair
Brunke Glass & Window Co Inc
Madison, WIServices Offered
Tempered Glass
Window Replacement/Installation
Glass Showers
Screen Repair
Energy-Efficient Options
Mirrors
AHT Wisconsin Windows
Madison, WIGood Customer Service
Price Transparency
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Bay Windows
Triple Pane Glass
Double-Hung
Vinyl Frames
Glass Doors
Zuern Building Products & Design Center
Watertown, WIEducational Website
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Marling Lumber and HomeWorks
Madison, WIGood Customer Service
Educational Website
Price Transparency
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Wisconsin Building Supply - Mauston
Mauston, WIGood Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Glass Doors
Bay Windows
LEI Home Enhancements of Madison
Madison, WIGood Customer Service
Educational Website
Free assessment
Services Offered
Wood Frames
Window Replacement/Installation
Glass Doors
Calculate how much you can expect to pay for window installation and replacement in Portage, 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 Portage Saves You Money
Energy-efficient windows can offer benefits in more than one way. Here are a few reasons you may want to take the plunge and make the switch:
- Protect your investment: The older your home is, the more likely it is that switching to energy-efficient windows will benefit you. Older homes usually have windows that are outdated, drafty or maybe even damaged in some way. Updating your windows could help increase the value of your home if you decide to sell.
- Protect your valuables: The low-emissivity coatings on many energy-efficient windows help prevent damage from the sun's UV rays to your floors, carpets and furniture.
- Decrease your carbon footprint: Decreasing how much energy you use also lowers your indirect greenhouse gas emissions. You could reduce it by 715 pounds per year on average.
- Save money on electricity bills: Since energy-efficient windows reduce the amount of energy used to heat or cool your home, the switch can help you save around $515 annually on your energy bills in Portage.
Estimated Cost of Window Replacement in Portage
Windows come in different shapes and sizes, so costs and services will differ tremendously. Here are the average costs and services that you’ll find from window installation companies.
How Much Do New Windows Cost?
Even though the national average cost to install one window is around $600, it can range from $200 to $1,200. This is because window installations depend on several factors specific to your home, like the size, material and number of windows you need to install, as well as where your property is located.
It’s also worth noting that energy-efficient windows will almost always cost more upfront, but Energy Star estimates that switching out the windows on your Portage home can mean an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. The amount of money you’ll save by switching to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.
We advise getting free quotes from multiple window companies to find the one that works best for your budget.
What Services do Window Installers Offer?
Generally, there are two kinds of window installation services companies provide: full-frame and pocket installations.
Full-frame installations involve replacing the full window — the sill, frame, trim and all. These are most common when you want to change the style of your window or when it has significant deterioration. Full-frame installations involve more time and labor and will increase overall costs. A pocket installation entails replacing a window without replacing the frame. This means instead of tearing out the whole window and rebuilding it, the contractor will just slide the replacement window (also called a retrofit or insert window) into the frame.
If you’re still trying to decide which type of installation you should get, you can ask your installer and get their advice. The decision mostly is influenced by 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
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 Portage
The EcoWatch Reviews team differs from other reviewers since we look at these companies through a sustainability lens. Along with energy efficiency, we reviewed several window installers in Portage and assigned rankings using the following methodology:
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 a quality window installation company near you.
Work Quality
When installing new windows, the quality and range of services often plays just as important of a role in insulation and performance as the brand you get. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed trends in recent online reviews to find the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction may be the most important factor, as it indicates the quality of services across nearly every category, including professionalism, quality of parts, warranty, cost, quality of installation and more.
Cost
This one is a give-and-take: as with other services, cheap window installers may not provide the most quality service. Still, we want to make sure we’re highlighting companies that provide a spectrum of price and financing options so they’re accessible to most homeowners.
Warranty
As discussed, windows are a substantial investment, so you’ll want to be certain that investment is protected. Window installation companies that provide lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to Portage’s climate, homeowners will want to mitigate rot, water damage and low efficiency. We factored in local experience to reflect the ability of Portage window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Portage, WI Window Replacement FAQs
How much should a window install cost?
The average cost of replacing a window ranges from $450 to $650. There are many factors that affect how much it costs, such as styles and sizes of windows, the materials used in designing the windows, local labor costs, your property’s location, how energy-efficient the windows are and the number of windows.
What are the types of windows?
The most common types of windows for homes include: slider windows, awning windows, casement windows, double-hung and single-hung windows, picture windows, bay windows and transom windows.
What services do window replacement companies do?
Window installers visit your home to remove your old windows and replace them with new ones. Some providers install products distributed by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation.
What time of year is a good time to replace my windows?
Though you can install windows any time of year, warmer weather is generally better for installing replacement windows. In addition, the weather should be dry, since rain can make the installation more difficult.