Certified by Window World of Northwest Indiana • Mar 01, 2026
Window Installation ServiceWindow SupplierDoor SupplierSiding ContractorRemodeling ContractorWindow World
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!
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Certified by Window World of Northwest Indiana • Mar 01, 2026
Certified by Window World of Northwest Indiana • Mar 01, 2026
Reviews
4.5
45 reviews
5 stars
38
4 stars0
3 stars
3
2 stars
1
1 star
3
MC
Meghan Cummins
Oct 15, 2025
5.0
We had 19 windows replaced today. The professionalism was beyond amazing. They introduced themselves when they got here, told me the plan and got to it. They completed it in 1 day! Absolutely amazing. They cleaned up after and made sure everything was perfect. I cannot recommend Window World enough. From the start of getting a quote to the finished product. Highly highly recommend.
BP
Becky Pierce
Jun 20, 2025
5.0
Yesterday we had 4 windows and a sliding patio door installed. After introducing themselves, they spread drop cloths through the whole house which we were impressed with. Their workmanship is impeccable. They were very professional and very courteous. They explained the operation of the windows and door. They completely cleaned their work area. Before leaving, they asked if we had any questions. We would highly recommend Window World. You will not be disappointed. Thank you.
Larry & Becky Pierce
TT
Toni
Nov 15, 2020
3.0
I'm not sure yet. I still haven't received my Kitchen window I ordered.
JC
Judy Czerwinski
Feb 1, 2020
5.0
Matt and the crew were wonderful. We are very pleased with their work and clean up. Yes, I would recommend them. We thought the price was good.
Frequently Asked Questions About Window World of Northwest Indiana
What does "Any Size, Installed" mean?
The term "Any Size" refers to any size replacement Double-Hung window our manufacturer will construct. Currently this is a minimum width and height of 15" X 26" and a maximum of 48" X 78". "Installed" refers to the removal of a basic Double-Hung wooden window and installing your new Window World replacement window, using the existing wooden stops.
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 does "Any Size, Installed" mean for replacement windows?
"Any Size" means any size replacement Double-Hung window from 15" X 26" up to 48" X 78" can be constructed. "Installed" means removing the existing basic Double-Hung wooden window and installing the new replacement using existing wooden stops.
What payment methods and financing options does Window World of Northwest Indiana offer?
They offer cash, check, and financing options depending on the promotional period and subject to approved credit. Contact them for the most current options.
Are replacement windows installed from the inside or outside?
Most replacement windows are installed from the outside, but in some cases installation from the inside is necessary. The installation expert will assess and explain the process on the day of installation.
Can replacement windows be installed year-round? Will I lose heat or cooling during installation?
Yes, installation happens year-round. Typically, installation takes one day with minimal heat or cooling loss as crews install one window at a time, minimizing exposure. Energy savings will outweigh any temporary losses.
How should 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 take down nearby wall decorations to avoid damage during installation.
How long does it take to get and install replacement windows?
Manufacturing times vary as windows are custom-built. Installation typically takes about 30 minutes per window plus additional time for trim and cleanup. An average job usually completes in one day.
What warranty coverage comes with windows and doors?
All windows and patio doors come with a manufacturer's lifetime limited warranty and a repair labor guarantee valid as long as you own your home. Contact Window World for more details.
What happens to my old windows after installation?
Old windows are removed and properly disposed of. If you want to keep your old windows or storm windows, inform the installation crew upon arrival.
What should I do if I encounter a problem with my new windows?
Most issues are easily corrected and don't necessarily indicate a defect. You can always contact Window World of Northwest Indiana for assistance.
What nearby places can help me find or complement my visit to Window World of Northwest Indiana?
Nearby places include Neal Co, a window supplier useful for industry needs; The Grounds Guys of Valparaiso, a building supply store complementing home projects; and J & J's Pizza Shack, a great spot to enjoy a meal after your visit.
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