20 Best Window Companies in Mequon, WI (2025 Reviews)
When you need to replace your windows, our list of the best window installation companies can help you find the provider for you.
We analyzed all the top-rated window companies in Mequon 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
Although renewable energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your house’s efficiency can also have a big impact on home energy conservation. Poor windows can make your AC or heater work extra hard in the summer or winter.
Installing energy-efficient windows on your property can help you save money each month on your power bills — and you can help the environment, too.
Efficient windows are especially important in Mequon, where winters are long and cold. According to Energy Star, switching to energy-efficient windows can save the average homeowner up to $433 a 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 Mequon
The EcoWatch team examined dozens of providers that serve the Mequon area to find the best window installation companies by our standards. We assessed the installers on energy-efficient offerings, local experience, customer service, price, coverage area 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 is 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 window installation industry.
Window World may be the company for you if you want one 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 with a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so be sure to mention that you want energy-efficient windows to your Window World representative when inquiring about services.
How much does Window World cost in Mequon?Window World does not display prices on its website, but it's known for offering some of the most affordable window installations around. If you’d like more accurate information, you can inquire about 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 is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the window installation industry.
Andersen may be the company for you if you want one 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 with a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so be sure to mention that you want energy-efficient windows to your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Mequon?Andersen does not display 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. If you’d like more accurate information, you can inquire about a quote on the company’s website.
We have tried to be unbiased and transparent by listing pros and cons for each provider. Additionally, any partnerships do not affect our rankings.
More Window Companies in Mequon
Renewal by Andersen of Milwaukee Waukesha Showroom
Waukesha, WIFree assessment
Educational Website
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Custom Window Designs
Glass Doors
Bay Windows
Skylights
Double-Hung
Champion Replacement Windows of Milwaukee
New Berlin, WIGood Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Double-Hung
Glass Doors
Bay Windows
Home Window Repair & Replacement
Germantown, WIPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Glass Doors
Energy-Efficient Options
Storm/Impact Windows
Double-Hung
Screen Repair
Window Replacement/Installation
Vinyl Frames
Tempered Glass
Wood Frames
Metal Frames
Glass Repair
Window Repair
Window Repair & Glass Replacement Company
Oak Creek, WIPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Storm/Impact Windows
Double-Hung
Window Repair
Wood Frames
Tempered Glass
Screen Repair
Energy-Efficient Options
Vinyl Frames
Glass Repair
Glass Doors
Metal Frames
Window Replacement/Installation
RNB Design Group LLC
Germantown, WIEducational Website
Price Transparency
Timely Service
Good Customer Service
Free assessment
Services Offered
Window Repair
Glass Showers
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
Double-Hung
Argo Glass & Windows - Home Window Repair & Glass Replacement
Milwaukee, WIEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Metal Frames
Wood Frames
Screen Repair
Glass Repair
Window Repair
Window Replacement/Installation
Double-Hung
Storm/Impact Windows
Vinyl Frames
Tempered Glass
Energy-Efficient Options
Glass Doors
Brighter Concepts Ltd - Solatube, RediLights, Indow Windows
Milwaukee, WIFree assessment
Educational Website
Price Transparency
Services Offered
Storm/Impact Windows
Window Replacement/Installation
Skylights
Absolute Quality Glass
New Berlin, WIPrice Transparency
Free assessment
Services Offered
Window Replacement/Installation
Absolute Restorations
Milwaukee, WIGood Customer Service
Educational Website
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
HomeSealed Exteriors, LLC
New Berlin, WIPrice Transparency
Free assessment
Educational Website
Lifetime workmanship warranty
Online billing and payments
Good Customer Service
Free in-home consultations
Services Offered
Glass Doors
Bay Windows
Double-Hung
Energy-Efficient Options
Window Replacement/Installation
Four Leaf Roofing & Windows
New Berlin, WIPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Bay Windows
Zenith Roofing and Construction
Waukesha, WIFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Skylights
Window Depot USA of Milwaukee
St Francis, WIPrice Transparency
Educational Website
Good Customer Service
Timely Service
Free assessment
Services Offered
Vinyl Frames
Double-Hung
Energy-Efficient Options
Bay Windows
Triple Pane Glass
Window Replacement/Installation
Glass Doors
Glass Showers
Total Glass And Paint
Hartford, WIGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Energy-Efficient Options
Mirrors
Glass Repair
Glass Showers
Window Replacement/Installation
Window Repair
Screen Repair
EZegress Windows
Lake Geneva, WIGood Customer Service
Timely Service
Price Transparency
Free assessment
Services Offered
Double-Hung
Window Replacement/Installation
Next Level Windows Inc.
Gurnee, ILTimely Service
Price Transparency
Free assessment
Services Offered
Bay Windows
Glass Doors
Vinyl Frames
Window Replacement/Installation
Energy-Efficient Options
Double-Hung
LDS Renovations
Grayslake, ILFree assessment
Good Customer Service
Educational Website
Price Transparency
Services Offered
Window Repair
Window Replacement/Installation
Apex Energy Solutions - Window Replacement & Entry Doors
Brookfield, WIEducational Website
Good Customer Service
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Window Works
Brookfield, WIGood Customer Service
Free assessment
Price Transparency
Services Offered
Glass Doors
Custom Window Designs
Skylights
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Empire Home Remodeling
Milwaukee, WIFree assessment
Educational Website
Price Transparency
Services Offered
Glass Showers
Bay Windows
Double-Hung
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Calculate how much you can expect to pay for window installation and replacement in Mequon, 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 Mequon Saves You Money
Energy-efficient windows can provide benefits in several ways. Here are a few reasons you may want to think about making 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 potentially even damaged in some way. Updating your windows could help raise the value of your property if you decide to sell.
- Decrease your carbon footprint: Reducing how much energy you use also lowers your carbon emissions. You could reduce it by 497 pounds per year on average.
- Save on energy bills: Upgrading to energy-efficient windows lowers your energy bills by about 12% since you use less energy.
- Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
Estimated Cost of Window Replacement in Mequon
Let’s go over the cost of installing new windows and the types of services offered by 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. But costs vary remarkably based on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also offer door installations and replacements, which will add extra costs to your project.
It’s also worth noting that energy-efficient windows will usually cost more upfront, but Energy Star estimates that upgrading the windows on your Mequon home can mean an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. How much you’ll save by installing energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.
We recommend requesting free quotes from multiple window companies to find the one that works best for you.
What Services do Window Installers Offer?
The first question to ask yourself when planning to replace your windows is: Do you need a full-frame installation or a pocket installation?
Full-frame installations require replacing the full window — the sill, frame, trim and all. These are typically done when you want a new style for your windows or when it has a great amount of damage. Full-frame installations are more involved and will increase overall costs. Pocket installations are simpler and won’t cost as much, as they involve merely replacing the window within its existing frame. But if the frame has any damage or rot, you may have to get a full-frame installation instead.
Your window installer should be able to help you choose which type of installation you need.
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 Mequon
EcoWatch reviews are different from other reviews since we look at these companies through a sustainability lens. We have reviewed the best window installation companies in Mequon mainly based on their energy efficient offerings, as it’s what’s best for the environment and for you as a homeowner. Energy-efficient 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 installers that serve Mequon so you can find the right window installation company near you.
Work Quality
When it comes to new windows, the quality and breadth of services often plays just as important of a role in insulation and performance as the brand of window you opt for. 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 customer feedback to find the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction may be the factor we place the most value on, as it reflects the quality of services across most other categories, including professionalism, warranty, quality of parts, cost, quality of installation and more.
Cost
This one is a give-and-take: similar to other services, cheap window installers may not provide the most quality service. Still, we want to ensure we’re highlighting companies that offer a wide range 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
Because of Mequon’s climate, homeowners need to be wary of water damage, rot and low efficiency. We factored in local experience to reflect the ability of Mequon window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Mequon, WI Window Replacement FAQs
How much does window installation cost?
The national average cost to install a window is about $600 but can range between $200 and $1,200, depending on several factors. The price is usually influenced by the size of the window, the type and material of the window and the location of your property. Also, keep in mind that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills.
Which kind of window is the best?
A window’s energy efficiency is influenced by several factors, including the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are often the most energy-efficient and are certified by the U.S. Department of Energy.
When do I have to use a window installation company?
Unless you have experience with home improvement projects and have all the tools you need to replace your own windows, we recommend hiring a professional. The process of installing windows is complicated and can take anywhere from four to six hours for a single window. Although it’s tempting to try to save money by doing it yourself, hiring a professional is a faster, more efficient and safer alternative.
How long does it usually take to install windows?
Each window takes about 30 minutes to install based on the type of window. However, the window installation can take two days or more if you need to have a lot of windows installed.