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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!
Customers consistently praised the professionalism, friendliness, and knowledge of the staff, particularly highlighting sales representative Kevin Groce and installer Cody.
Installation Quality
The installation teams received high marks for their efficiency, cleanliness, and quality of work, with many customers expressing satisfaction with the final results.
Communication
Customers appreciated the clear communication throughout the process, from initial consultations to installation timelines.
Value for Money
Many reviews noted that Window World offered competitive pricing and good value compared to other companies.
Overall Satisfaction
The majority of customers expressed high levels of satisfaction with their experiences, recommending Window World for future projects.
JV
Joe De Veaux
Jan 5, 2026
1.0
We ordered windows from Window World on July 6, 2025 after an in-home meeting with their rep, Greg, attended by myself and my builder. We specifically asked for the lead time for our exact order, which included custom sizes and bronze exterior / white interior factory finish. We were clearly told that the expected turnaround time was 6–8 weeks from the time of order. Based on this information, we proceeded with the purchase and structured the remainder of our construction timeline accordingly.
Based on the stated lead time, our windows should have arrived by the first week September 2025 at the latest.
At approximately six weeks post-order, I attempted to follow up for a status update. Multiple voicemails were left over several days without response. About a week later, I was informed that Greg had been on vacation and that the windows were now expected to arrive in another 2–3 weeks, which still aligned reasonably with the original estimate.
However, after that point, the communication deteriorated significantly. At 9 weeks post-order, we were told “hopefully next week.” This same message continued for another 5 weeks, despite repeated follow-ups.
On November 3, I left another voicemail. Greg returned my call on Nov 5 and stated the following (paraphrased):
“Normally standard white windows are 6–8 weeks. Once you get them painted or colored, they have to ship them to another plant to get painted, and it takes longer—usually about 10–12 weeks.”
This explanation was never disclosed at the time of sale, despite us asking specifically about lead times for our chosen configuration. Had this information been provided upfront, we would have made a different purchasing decision or adjusted our construction schedule accordingly.
Ultimately, the windows were not delivered until November 9 — approximately 16 weeks after the order was placed, more than double the original quoted timeframe (and beyond the timeline even IF they had given the 10-12 weeks
in the first place)
Key Issues:
1. Misrepresentation of lead times when directly asked about this specific order configuration.
2. Failure to return calls and provide timely, honest updates.
3. Repeated assurances that delivery was imminent when it clearly was not.
4. A significant domino effect on our construction schedule, including delays to drywall and finishing work.
5. Substantial financial impact, including:
• Delayed move-in from Christmas to March/April
• Additional months of rent while simultaneously paying a mortgage
• Thousands of dollars in avoidable costs caused by inaccurate and misleading information
I fully understand that delays can occur in construction and manufacturing. What is unacceptable is intentional or negligent misrepresentation, compounded by poor communication once the sale was secured.
Had Window World been honest about realistic lead times—or transparent once delays became evident—we could have planned accordingly and significantly reduced the financial and logistical damage.
This experience reflects a breakdown in honesty and accountability. I am documenting this not only to seek acknowledgment and resolution, but also so that future customers are not placed in the same position.
RN
Rebecca Nicley
Dec 31, 2025
5.0
Guys did a great job replacing window. They were friendly and courteous. I am pleased with the installation. Window was replaced by Logan, Matt and Kaiden. Thanks to the guys for great service.
JB
january beeler
Dec 17, 2025
5.0
I could not be happier. Everyone I've delt with has been nice and informative. If I ever have to have anything else done I will be asking for Logan personally. He was so quick, knowledgeable and kind. Thank you Window World!
TD
Tom DeSimio
Dec 7, 2025
5.0
Kevin Groce is a pleasure to work with. Polite, knowledgeable and professional.
JW
Janene Walker
Dec 1, 2025
5.0
Jonathan and Kaiden did excellent work. They did everything in a very professional manner, and they are also very personable. I highly recommend Window World and these wonderful young men.
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.
What does "Any Size, Installed" mean in relation to your windows?
"Any Size" means any size replacement Double-Hung window the manufacturer can build, between 15"x26" and 48"x78". "Installed" means removing your old basic Double-Hung wooden window and installing the new Window World replacement using existing wooden stops.
What payment methods and financing options are available?
We accept cash, check, and offer financing options subject to approved credit. Please contact us for current promotions and detailed financing information.
Are your replacement windows installed from the inside or outside?
Most replacement windows are installed from the outside. In some situations, installation from the inside is necessary. Your installation expert will assess and explain the best method for your home on installation day.
Do you install replacement windows year-round, and will I lose a lot of heat or cooling during installation?
Yes, we install windows year-round. Installations usually take one day, and crews work to minimize heat or cooling loss. Energy savings from new windows will offset any minor temporary energy costs during installation.
How should I prepare my house for window replacement?
Remove curtains, blinds, and other window treatments. Security sensors should be disabled by your security company. Clear a path to the windows by moving objects, and remove nearby wall decorations to prevent damage during installation.
How long does it take to get and install my replacement windows?
All windows are custom-built, so manufacturing times vary. Installation time depends on window type and removal type, averaging about 30 minutes per window. Trim and cleanup require extra time, with most jobs completed in a single day.
What warranty comes with my new windows?
Our 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. Contact us or visit our warranties page for details.
What happens to my old windows after installation?
We remove and properly dispose of your old windows after installing your replacements. If you want to keep your old windows or storm windows, please inform the installation crew upon their arrival.
What do I do if I encounter a problem with my new windows?
Many common issues are easily fixed and don’t necessarily mean there’s a window problem. You’re always welcome to contact us for assistance if you have concerns.
What nearby places can I visit before or after visiting Window World of Knoxville?
Nearby you can visit Jennifer’s Discovery Toys for unique gifts, stop by Scooter’s Coffee for a refreshment, or explore Lowe’s Home Improvement for additional home project needs, making your visit convenient and enjoyable.