20 Best Window Companies in Oconomowoc, WI (2025 Reviews)
Thinking about improving your home’s energy efficiency? The best window replacement companies can help.
We analyzed all the top-rated window companies in Oconomowoc and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
Please enter a valid 5-digit zip code!
Why you can trust EcoWatch
A review of the top window installation companies in Oconomowoc may not seem like the most captivating article on EcoWatch, but trust us, windows impact your life more than you might think. If your windows are made of traditional materials, or are outdated or damaged, you could be sending 25-30% of your house’s heat or cool air out of them.
That’s not great for your wallet or the environment, but one of the top window installation companies can help you with that.
Efficient windows are particularly important in Oconomowoc, where winters are long and cold. According to Energy Star, switching to energy-efficient windows can save the average homeowner up to $483 per year.
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 Oconomowoc
The EcoWatch team researched dozens of window companies in Oconomowoc to find the top ones for our readers. The companies mentioned in this article scored best in our categories: 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 has windows expertise in Oconomowoc. This window installation company has been in business since 1995 and currently provides services to 200 locations nationwide. The provider has hundreds of glowing reviews from customers on online review websites.
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 is an Energy Star partner offering a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Window World representative when inquiring about services.
How much does Window World cost in Oconomowoc?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 request 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 has the best availability in Oconomowoc. This window installation company has been in business since 1995 and currently provides services to nearly every state except Mississippi and West Virginia. The provider has hundreds of glowing reviews from customers on online review websites.
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 is an Energy Star partner offering a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Oconomowoc?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 request a free quote on its website for more information about the cost.
Please note that the following companies are national, which means the quality of customer service may vary depending on your local crew. We have tried to be unbiased and transparent by including both pros and cons for every provider.
More Window Companies in Oconomowoc
Renewal by Andersen
Madison, WIPrice Transparency
Free assessment
Educational Website
Good Customer Service
Services Offered
Window Replacement/Installation
Custom Window Designs
Skylights
Double-Hung
Bay Windows
Glass Doors
Champion Replacement Windows of Milwaukee
New Berlin, WIFree assessment
Good Customer Service
Price Transparency
Services Offered
Double-Hung
Bay Windows
Window Replacement/Installation
Glass Doors
Champion Replacement Windows of Madison
Madison, WITransparent pricing and no hidden fees
Limited lifetime warranty
Good Customer Service
All products made or sourced in the USA
Free assessment
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Double-Hung
Bay Windows
Home Window Repair & Replacement
Germantown, WIGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Glass Doors
Energy-Efficient Options
Metal Frames
Window Replacement/Installation
Double-Hung
Storm/Impact Windows
Tempered Glass
Glass Repair
Window Repair
Wood Frames
Screen Repair
Vinyl Frames
Window Repair & Glass Replacement Company
Oak Creek, WIGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Metal Frames
Window Replacement/Installation
Glass Doors
Wood Frames
Tempered Glass
Vinyl Frames
Storm/Impact Windows
Glass Repair
Window Repair
Screen Repair
Energy-Efficient Options
Double-Hung
Exceptional Exteriors LLC
Stoughton, WIFree assessment
Good Customer Service
Educational Website
Price Transparency
Services Offered
Window Replacement/Installation
Glass Doors
Total Glass And Paint
Hartford, WIEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Glass Repair
Screen Repair
Window Repair
Mirrors
Energy-Efficient Options
Glass Showers
Zenith Roofing and Construction
Waukesha, WIGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Skylights
Window Replacement/Installation
Absolute Quality Glass
New Berlin, WIPrice Transparency
Free assessment
Services Offered
Window Replacement/Installation
HomeSealed Exteriors, LLC
New Berlin, WIFree in-home consultations
Lifetime workmanship warranty
Free assessment
Educational Website
Online billing and payments
Price Transparency
Good Customer Service
Services Offered
Energy-Efficient Options
Double-Hung
Glass Doors
Bay Windows
Window Replacement/Installation
Four Leaf Roofing & Windows
New Berlin, WIPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Bay Windows
RNB Design Group LLC
Germantown, WIPrice Transparency
Timely Service
Free assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Glass Doors
Bay Windows
Double-Hung
Window Repair
Glass Showers
Argo Glass & Windows - Home Window Repair & Glass Replacement
Milwaukee, WIFree assessment
Good Customer Service
Educational Website
Price Transparency
Services Offered
Vinyl Frames
Tempered Glass
Storm/Impact Windows
Metal Frames
Window Replacement/Installation
Window Repair
Screen Repair
Wood Frames
Double-Hung
Glass Repair
Glass Doors
Energy-Efficient Options
Absolute Restorations
Milwaukee, WIFree assessment
Good Customer Service
Educational Website
Price Transparency
Services Offered
Window Replacement/Installation
Brighter Concepts Ltd - Solatube, RediLights, Indow Windows
Milwaukee, WIFree assessment
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Skylights
Storm/Impact Windows
Window Depot USA of Milwaukee
St Francis, WIPrice Transparency
Good Customer Service
Free assessment
Educational Website
Timely Service
Services Offered
Vinyl Frames
Double-Hung
Bay Windows
Triple Pane Glass
Glass Doors
Window Replacement/Installation
Glass Showers
Energy-Efficient Options
EZegress Windows
Lake Geneva, WIFree assessment
Timely Service
Price Transparency
Good Customer Service
Services Offered
Double-Hung
Window Replacement/Installation
Wisco Roofing and Windows
Janesville, WIEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
Infinity Exteriors
Madison, WIPrice Transparency
3D home visualizer
Educational Website
Free assessment
Good Customer Service
Free in-home consultations and estimates
Lifetime workmanship warranty
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Bay Windows
Wood Frames
LDS Renovations
Grayslake, ILPrice Transparency
Free assessment
Educational Website
Good Customer Service
Services Offered
Window Repair
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Oconomowoc, 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 Oconomowoc Saves You Money
By upgrading to energy-efficient windows, you and your family can enjoy 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 tend to 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.
- Decrease your carbon footprint: In Oconomowoc, you can cut your indirect greenhouse gas emissions by about 497 pounds per year after you upgrade to energy-efficient windows.
- 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 due to their ability to filter out damaging UV rays.
- Save money on electricity bills: Since energy-efficient windows reduce how much energy you need to heat or cool your home, the switch can help you save around $483 annually on your energy bills in Oconomowoc.
Estimated Cost of Window Replacement in Oconomowoc
Windows come in different shapes and sizes, so costs and services will differ greatly. Here are the typical costs and the primary services that you’ll find from window installers.
How Much Do New Windows Cost?
The national average cost to install one window is about $600 but can range anywhere from $200 to $1,200. This is due to the fact that window installations depend on several factors specific to your home, including the size, material and number of windows you need to install, as well as where your property is located.
With windows, efficiency is one of the most important factors for many homeowners. Windows with higher efficiency may cost more off the bat, but by increasing the efficiency of your home — especially during the winter — they can give you decades of energy savings. According to Energy Star, buying certified energy-efficient windows can save Oconomowoc homeowners $483+ per year after replacing single-pane windows.
We advise requesting free quotes from several window companies to find the right windows and the company that works best for your budget.
What Services do Window Installers Offer?
The first thing to ask yourself when planning to replace your windows is: Do you need a full-frame installation or a pocket installation?
Full-frame installations involve replacing the entire window — the sill, frame, trim and all. These are typically done when you want to change the style of your window or when it has significant rot or deterioration. Full-frame installations are more time-consuming and will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window within its existing frame. Pocket installations are on the simpler end and won’t carry as large a bill, but you can’t do this type of installment if you have any pre-existing rot or water damage.
If you’re hiring a reputable window installation company, your company will be able to recommend the best type for your project. In Oconomowoc, the choice will mostly be influenced by how much damage there is currently and the age of your existing frames.
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 Oconomowoc
The EcoWatch Reviews team is different from other reviewers since we look at these companies through a sustainability lens. We’ve evaluated the top window installers in Oconomowoc 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 can reduce your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve Oconomowoc so you can find the best window installation company near you.
Work Quality
When choosing new windows, the quality and range of services often plays just as important of a role in overall efficiency and performance as the brand of window you choose. We do give window installers more points if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent online reviews to find the companies with the most consistent customer satisfaction. Customer satisfaction may be the most important factor, as it reflects the quality of services across nearly every category, including warranty, professionalism, quality of installation, cost, quality of parts and more.
Cost
This one is a give-and-take: as with most services, cheap window installation companies won’t always provide the highest quality service. On the other hand, we want to ensure we’re highlighting companies that provide a wide range 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 with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have been in the industry for quite some time. Window installers that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Oconomowoc, WI Window Replacement FAQs
How much should window installation cost?
The typical cost of replacing a single window ranges between $450 and $650. There are several factors that influence how much it costs, including how energy-efficient the windows are, styles and sizes of windows, the materials used in designing the windows, the number of windows, your property’s location and local labor costs.
Which kind of window should I get?
A window’s energy efficiency is affected by several factors, such as the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are typically the most energy-efficient since they are certified by the U.S. Department of Energy.
Can you replace your own windows?
If you’re handy and have experience with installing a replacement window, you may be able to install your own windows. But if you don’t have the time or know-how, we recommend getting a professional to do it for you.
Should I replace my windows all at the same time?
If your windows are greater than 20 years old, you probably need to replace all of them. By that point, they are usually less efficient, draftier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less time.