20 Best Window Companies in DeForest, WI (2025 Reviews)
When you need to upgrade your windows, our reviews of the best window installation companies can help you find the right provider for you.
We analyzed all the top-rated window companies in DeForest 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 home renovations or have windows that need repairs, windows play a key role in conserving energy in your home. During the cold winter months, the last thing you want is your heat to leak out of your drafty windows.
Thankfully, saving you money with more efficient windows also aligns with our goals of conserving energy and the resources it takes to produce it.
Efficient windows are of particular importance in DeForest, where winters are long and cold. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $505 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 DeForest
The EcoWatch Reviews team examined dozens of window providers in DeForest to find the best ones for our readers. We assessed the providers on their energy-efficient offerings, coverage area, customer service, 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 is the largest window replacement company in the country, known for its vinyl windows and affordability. This window installation company has been operating since 1995 and currently serves 200 locations nationwide.
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, Window World may be the provider for you.
Energy Efficiency of Window World WindowsWindow World is an Energy Star partner offering 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 make 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 DeForest?Prices are not available on Window World’s website because the cost of window installment varies greatly based on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. If you’d like to know for sure, you can get 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. This window installation company has been operating since 1995 and currently serves nearly every state except Mississippi and West Virginia.
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, Andersen may be the provider for you.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen is an Energy Star partner offering 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 make 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 DeForest?Prices are not available on Andersen’s website because the cost of window installment varies greatly based on how many and what type(s) of windows you need. However, 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 get a quote on the company’s website.
We strive to be unbiased and transparent by describing pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.
More Window Companies in DeForest
Renewal by Andersen
Madison, WIEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
Glass Doors
Custom Window Designs
Skylights
Champion Replacement Windows of Madison
Madison, WILimited lifetime warranty
Good Customer Service
Transparent pricing and no hidden fees
All products made or sourced in the USA
Free assessment
Price Transparency
Services Offered
Double-Hung
Window Replacement/Installation
Glass Doors
Bay Windows
Exceptional Exteriors LLC
Stoughton, WIEducational Website
Free assessment
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Glass Doors
Home Window Repair & Replacement
Germantown, WIPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Glass Repair
Wood Frames
Metal Frames
Storm/Impact Windows
Tempered Glass
Double-Hung
Window Repair
Screen Repair
Glass Doors
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Infinity Exteriors
Madison, WI3D home visualizer
Good Customer Service
Lifetime workmanship warranty
Price Transparency
Educational Website
Free assessment
Free in-home consultations and estimates
Services Offered
Wood Frames
Window Replacement/Installation
Bay Windows
Energy-Efficient Options
Wisco Roofing and Windows
Janesville, WIEducational Website
Good Customer Service
Free assessment
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Total Glass And Paint
Hartford, WIGood Customer Service
Educational Website
Price Transparency
Free assessment
Services Offered
Mirrors
Screen Repair
Glass Repair
Energy-Efficient Options
Window Replacement/Installation
Window Repair
Glass Showers
Zenith Roofing and Construction
Waukesha, WIEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Skylights
Epic Painting & Exteriors
Madison, WIFull-service exterior remodeling
Educational Website
Online home visualizer
Price Transparency
Good Customer Service
Energy-efficient
Services Offered
Window Replacement/Installation
City Glass Company, Inc.
Janesville, WIEducational Website
Services Offered
Mirrors
Glass Doors
Window Replacement/Installation
Glass Showers
Pella Windows & Doors of Brookfield
Brookfield, WIGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Wood Frames
Double-Hung
Glass Doors
Custom Window Designs
Window Replacement/Installation
Nextech Glass
Waukesha, WIGood Customer Service
Services Offered
Window Replacement/Installation
A M Construction
West Bend, WIEducational Website
Free assessment
Timely Service
Services Offered
Window Replacement/Installation
Martin Glass Company
Madison, WIFree assessment
Services Offered
Window Replacement/Installation
Glass Showers
Tempered Glass
Glass Doors
Window Repair
Mirrors
Screen Repair
Storm/Impact Windows
Energy-Efficient Options
Steadfast Remodeling, Inc.
Mauston, WIGood Customer Service
Price Transparency
Educational Website
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Window World of Fond du Lac
Fond du Lac, WIGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Double-Hung
Glass Doors
Window Replacement/Installation
Bay Windows
Mad City Windows & Baths
Madison, WIPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Glass Showers
Bay Windows
Energy-Efficient Options
Double-Hung
Vinyl Frames
Pella Windows & Doors of Madison
Madison, WIEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Wood Frames
Custom Window Designs
Double-Hung
Glass Doors
Window Replacement/Installation
Brunke Glass & Window Co Inc
Madison, WIServices Offered
Energy-Efficient Options
Glass Showers
Screen Repair
Tempered Glass
Window Replacement/Installation
Mirrors
Hometown Glass & Improvement Inc
Beaver Dam, WIEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Glass Doors
Glass Showers
Glass Repair
Calculate how much you can expect to pay for window installation and replacement in DeForest, 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 DeForest Saves You Money
When you switch to energy-efficient windows, you may see several perks, such as:
- Protect your valuables from fading: When you upgrade to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will fade less due to their ability to filter out harmful UV rays.
- Save money on energy bills: Once you install energy-efficient windows, you can see a reduction in your bills by about 12% since you’ll use less energy to heat or cool your home.
- Decrease your carbon footprint: You can reduce your carbon footprint by about 12% when you install Energy Star certified windows. In DeForest, that’s about 715 pounds per year on average.
- Protect your investment: Upgrading your windows is an important part of maintaining your property and its real estate value, particularly if you have an older home.
Estimated Cost of Window Replacement in DeForest
Each window replacement company offers various services and has varying costs depending on a few factors.
How Much Do New Windows Cost?
The national average cost to install a single window is about $600 but can range from $200 to $1,200. These figures are based on the specifics of your installation, like type, size, material, the location of your home, number of windows and more.
It’s also worth noting that energy-efficient windows will typically cost more upfront, but Energy Star estimates that switching out the windows on your DeForest home translates to an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 per 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.
Costs will also vary depending on the material of your frame. Aluminum frames are the least expensive. They’re sturdy, light and maintenance-free, but provide poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made from wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They’re also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
In general, there are two kinds of window replacement services you can get: full-frame and pocket installations.
Full-frame installations entail replacing the total window, including the sill, trim and frame. You most likely need a full-frame installation when you want to change the style of your windows or your window has noticeable rot. Because these installations are more involved, they will raise the total cost. A pocket installation means replacing a window within the existing frame, which is generally less expensive than a full-frame installation.
If you’re not sure which type of window installation service you should get, your installer should be able to assist you. Generally, the decision is influenced by factors like the age and condition of the home, the type of building material, budget and time restrictions.
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 DeForest
In our search to find the most reliable, eco-friendly window installers in DeForest, EcoWatch assessed many companies before deciding on these. We’ve reviewed the top window installation companies in DeForest mainly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows can cut your electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
Since this is a guide for DeForest, we only included companies that serve the city. There are other reputable providers that didn’t make the list because they wouldn’t be able to serve homeowners in DeForest.
Work Quality
We’re certain that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each installer featured on this list to make sure its contractors are well-qualified and that the company has received tons of positive customer feedback to vouch for its service.
Customer Reviews
Another self-explanatory yet super important review factor is customer feedback. If most customers don’t have positive things to say about their service from a certain company, you won’t see it featured on EcoWatch.
Cost
Cheaper windows certainly don’t mean better windows, but we know many of our readers would like to keep costs low when possible. When analyzing the prices of providers, we gave higher points to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
As discussed previously, windows are a substantial investment, so you’ll want to be certain that investment is protected. Window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have been in the industry for a while. Window installers that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.
DeForest, WI Window Replacement FAQs
How much should a window install cost?
The typical cost to replace a single window ranges between $450 and $650. There are many factors that influence the price, such as the number of windows, your property’s location, styles and sizes of windows, how energy-efficient the windows are, local labor costs and the materials used in designing the windows.
What kind of window is the best for energy efficiency?
A window’s energy efficiency is influenced by several factors, including the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are typically the most energy-efficient and are certified by the U.S. Department of Energy.
Do you really have to use a window installation company?
You should hire a window installation company whenever you need to replace your windows. Installing windows is a complicated process that can be difficult to do on your own, so it’s best handled by the professionals.
How often should you replace windows?
Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, then they probably need to be replaced. Apart from that, if your windows have damage anywhere on them, or they have become difficult to open or close, they may need to be replaced.
Should I replace all my windows at once?
If your windows are more than 20 years old, it’s probably time to replace all of them. By that point, they are typically less efficient, leakier and/or more damaged than new windows. Doing your windows all at the same time will involve less paperwork and less time.