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!
Wonderful experience! Love my window! Kevin gave us quote arrived 6-8 weeks later!The installation was great they cleaned up after themselves left no mess! Lifetime warranty! Another copy from Knoxville told us all three windows had to be replaced due to warranty that was untrue! The price was very reasonable! I would recommend Window World to everyone!
RS
Rochelle Stanley
Oct 13, 2025
5.0
We had some windows replaced by Window World a few years ago and have been happy with them. Today we met with Kevin Groce to have more replaced. We’re happy with the price, quality, and service of Window World. Kevin made the process of ordering more windows easy and we enjoyed talking to him.
HB
Holly B
Oct 13, 2025
5.0
This is the first time we committed ourselves to getting more than one bid on having our old leaky French doors replaced with sliding glass. I'm sure glad we did. Window World had the best price and the salesperson was very knowledgeable about the product. Both the upstairs and downstairs doors were installed the same day (a nice surprise)! The doors have really opened up the view to our back yard and they slide so easily they almost open and close by themselves. The financing made it easy to afford so we didn't have to go through another winter with doors that were cold and wouldn't stay shut. I will not miss the arguments about who didn't shut the door all the way either. You have first dibs if and when we replace our siding, which is another story....
WK
Wall Kevin
Oct 11, 2025
5.0
I had a great experience with Logan! His communication was great with me coordinating the appointment and thoroughly inspecting all my windows, as well as demonstrating his excellent skills caring about the product performing and reviewing the maintenance of it, the install of window and measurement for replacements! Thank you Logan.
AC
Andrew Clark
Oct 4, 2025
1.0
Had them come out to quote me some windows and doors. Decided to move forward with the door first which was $4,000 and do the windows in about 6 months. Was told to text my credit card number to my representative which I thought was a terrible idea but I did it anyway. Called the store 9 days later to check on progress and was told they never received the go ahead from my representative. This place is the definition of a crooked fly by night company. Please save yourself the hassle I went through and call a company that does not make you text them sensitive financial information.
Frequently Asked Questions About Window World of Knoxville
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.
I'm overwhelmed by all the industry jargon. What do these words mean?
At Window World, it's our goal for each and every one of our customers to feel comfortable throughout their home improvement experience. We try to always explain any construction concepts in terms everyone will know when we're in the home, but we also like to make definitions available in advance. If there are any concepts you'd like to read up on as you research your options, feel free to download our Industry Terms document.