Experience Window World's unrivaled ENERGY STAR replacement windows, doors, vinyl siding, shutters and more. Contact us to schedule your free in-home or virtual quote today!
Location
Certified by Window World of Wausau • Mar 01, 2026
Certified by Window World of Wausau • Mar 01, 2026
Reviews
3.7
43 reviews
5 stars
25
4 stars
3
3 stars
3
2 stars
3
1 star
9
MA
Marsha Adams
Feb 27, 2026
5.0
Very good customer service from start to finish.
MS
Mr. Harper's Guide Service
Feb 25, 2026
5.0
We had three windows that had broken parts. The repairers, Ted and James, were on time and worked efficiently. The windows worked smoothly when they were done 25 minutes later. They were courteous and friendly.
We are thankful and happy that Window World is following through on their lifetime guarantee. This makes us feel even better about the choice we made for our replacement windows.
Thank you, Window World.
Chuck Manske
Clintonville
MR
Mary Rice
Feb 24, 2026
5.0
I love my new windows! Window World of Wausau gave me exactly what I wanted. The installers were efficient, pleasant, accurate and greatly improved my home. I replaced my living room window with a beautiful bay window. It adds so much light to the room and they did an excellent job! I highly recommend Window World of Wausau.
CK
Chris K
Feb 20, 2026
2.0
We had windows put in last spring. There not as good as I hoped. We have a draft around them, always a chill in the house. Don't know if they put insulation or not. BRRR Didn't have that with my old windows, I wish I had my old windows. They replaced 6 windows.😒ðŸ˜
TP
Troy Postler
Jan 14, 2026
1.0
Do not buy from window world. They said 4 to 6 weeks to get the window. It showed up 4 months later, with caulk on the inside of the window and I can't get them to replace it. Said they were going to replace it made a appointment and they never showed. So now iam stuck with a picture window full of caulk.
Frequently Asked Questions About Window World of Wausau
What types of payment methods and financing do you offer?
We offer a variety of payment methods and financing options (subject to approved credit) depending on promotional period. Please contact us for more information regarding available options.
Will the replacement windows be installed from the inside or outside?
The majority of our replacement windows are installed from the outside. In some situations it may be necessary to install from the inside. On the day of installation, your installation expert will assess your unique situation and explain the process that will best suit your home.
Do you install replacement windows year-round? If so, will I lose a lot of heat/cooling at the time of installation?
Window World installs replacement windows year-round. An average installation will take only one day. Our crews install one window at a time and are trained to do what they can to minimize heating/cooling loss. The energy savings from your new windows will recover any incremental energy costs incurred during their installation many times over during their lifetime.
How can I prepare my house for my replacement windows?
Please take down curtains, blinds, or any other window treatments. Security sensors should also be removed and turned off by your security company. Please provide our installation expert with a clear path to the window(s) being replaced by moving anything that may be in the way. It is also advisable to remove all wall decorations from the walls close to the windows as they may fall during removal or installation.
How long will it take to get my replacement windows? How much time should I allow for the installation?
Since every window ordered is custom-built to fit your home and design choices, manufacturing times vary. Once delivered, the type of window being installed and the type being removed help determine the amount of time needed to complete the job. On average, each window takes about 30 minutes. Trim work and cleanup will require additional time to complete. An average job will take a single day.
What type of warranty is available for my windows?
All windows and patio doors we sell come with a manufacturer’s lifetime limited warranty and a repair labor guarantee, good for as long as you own your home! Contact us or see our warranties page for more details.
What happens to my old windows?
After installing your new replacement windows we remove all old windows from your property and dispose of them properly. If you wish to keep your old windows or storm windows, please notify the installation crew as soon as it arrives for your installation.
What do I do if there is a problem with the windows?
Most of the issues encountered by our customers are easily corrected and don't necessarily mean that there is a problem with your window. You are always welcome to contact us for help.
What payment methods and financing options are available at Window World of Wausau?
Window World of Wausau accepts American Express, Cash, Check, Discover, Mastercard, Visa, and offers financing options subject to approved credit and promotional periods. Contact them for current details.
Are replacement windows installed from the inside or outside?
Most replacement windows are installed from the outside, though some may require inside installation. The installation expert will assess and explain the best process on installation day.
Is window installation available year-round, and will I lose heat or cooling during installation?
Yes, installation is available year-round. Installations typically take one day with one window replaced at a time to minimize heating or cooling loss.
How can I prepare my home for window installation?
Remove curtains, blinds, and window treatments. Disable security sensors with your security company. Clear a path to the windows and remove nearby wall decorations to prevent damage.
How long does it take to receive and install my replacement windows?
Custom-built windows vary in manufacturing time. Installation averages about 30 minutes per window, with additional time for trim and cleanup, usually completed within a day.
What warranty coverage comes with windows and doors?
All windows and patio doors come with a manufacturer’s lifetime limited warranty plus a repair labor guarantee valid as long as you own your home.
What happens to my old windows after installation?
Old windows are removed and properly disposed of unless you notify the installation crew beforehand that you wish to keep them.
What should I do if I encounter a problem with my windows?
Most issues are easily corrected. Contact Window World of Wausau for assistance if you experience any problems with your windows.
What are the business hours for Window World of Wausau?
Window World of Wausau is open Monday through Thursday from 8:30 AM to 5:00 PM, Friday from 8:30 AM to 3:00 PM, and closed on weekends.
What nearby places can I visit when visiting Window World of Wausau at 399 River Drive?
Nearby you can visit the Farmers Market of Wausau for fresh produce, the Serenity Salon And Spa for relaxation, or the Wausau Two Hearts Dog Park if you have a dog. These spots provide convenient activities before or after your appointment.
How can the proximity of USPS locations help me when visiting Window World of Wausau?
With the US Post Office, United States Postal Service, and USPS Collection Point nearby, you can easily handle mailing and shipping needs on the same trip as your visit to Window World.
Are there any nearby businesses that offer complementary services to Window World of Wausau?
Yes, Crescent Electric Supply Company offers building supplies nearby which could be convenient for home improvement projects, and 3D Collectibles is a local gift and hobby shop you might enjoy visiting.
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