Showed up thirty minutes early prepped, properly to not damage my property. They were professional while in my home. Completed their jobs with precision, and we're gone after installing eleven window... See more
Company replied
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See what reviewers are saying
There needs to be more standards (quality installations) between installation crews. One crew on the first day used a lot of caulk inside sealing the windows where as different crew the next day used... See more
Company replied
The windows and installers arrived on schedule. Tear out of old windows was done well, but with difficulty. "Hardest ones ever" New windows installed patiently and with detailed attention. Fill an... See more
Company replied
Wonderful experience. We replaced all 39 windows in our home that we bought just over a year ago. They were original to the house and 20 years old. Many wouldn’t close completely and were inefficient... See more
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Company details
- #2 of 4 best companies in Window Installation Service
- #6 of 7 best companies in Construction Company
- #4 of 6 best companies in Door Supplier
- #2 of 2 best companies in PVC Windows Supplier
- #3 of 3 best companies in Window Supplier
Why Window Nation is the best choice
Written by the company
- Energy Efficiency
- Tired of high utility bills? Replacing your old windows with our energy-efficient ones could lower your utility bills month after month. Our windows are made with top-quality insulated frames and seals, so you’ll get windows other companies can’t match. You’ll start saving money every month year-round.
- Expert Installation
- New windows are useless without proper installation. When you choose Window Nation, your new windows are expertly installed for a perfect fit and years of worry-free protection – and installed in 1 day. Our teams are local, so they understand what it takes to ensure your windows can handle the weather in your area.
- Styles and Colors
- Available styles and colors Whether you have standard-looking windows or a full-custom home, we can replace them. Each of our windows is expertly measured and custom-made for your home – even odd sizes. With over 1,500 styles and colors to choose, you’ll get the windows you want – even if you have an HOA or historic district.
- Lifetime Warranty
- Your current windows haven’t lasted – how can you be sure new ones will? At Window Nation, we stand behind our windows and doors with a lifetime warranty. That’s because we know we sell the best windows you can buy – and we’re confident they’ll perform and protect your home for decades.
Our Mission
Solve problems by installing solutions.
At Window Nation, we help homeowners reimagine their spaces with premium, energy-efficient windows built for beauty, comfort, and long-term performance. With over one million windows installed and more than 30 markets served nationwide, we’ve earned a reputation for expert craftsmanship and customer-first service. Our story began with a simple goal: to offer homeowners high-quality window solutions tailored to their unique needs. Today, that mission still drives us. We offer one of the largest selections of styles, colors, and materials, all customizable to fit your vision and your budget. Our Exterior Design Consultants work closely with every customer, ensuring a seamless experience from consultation to installation. Backed by industry-leading warranties and thousands of five-star reviews, Window Nation is proud to be a trusted partner for home improvement. We’re also committed to giving back, supporting the communities we serve through local partnerships and initiatives. Whether you’re upgrading for energy efficiency, curb appeal, or peace of mind, Window Nation delivers products you can trust and results you’ll love. Come discover why so many families continue to choose Window Nation, the company where quality, value, and service meet.
Contact info
1200 Woodruff Rd, Unit A-9, 29607, Greenville, SC, United States
- 864-991-3841
Window Nation
4.5
Excellent
35 reviews
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Window quality is very high and a good…
Window quality is very high and a good value. Installation was done with patience and professionalism. Installers were knowledgeable and experienced.
January 16, 2026
Reply from Window Nation - Greenville
We're happy to hear you find the window quality high and a good value. We appreciate that the installation was done with patience and professionalism by knowledgeable installers.
Installer showed up ON TIME ....Did an…
Installer showed up ON TIME ....Did an EXCELLENT Install and cleaned up afterwards !
December 17, 2025
Reply from Window Nation - Greenville
We're happy to hear that the installation was excellent and on time, and that our team cleaned up afterwards. Thank you for your positive feedback!
Installer was fantastic and…
Installer was fantastic and professional. Product meets our needs.
December 16, 2025
Reply from Window Nation - Greenville
We're happy to hear that the installer was professional, and the product meets your needs. Thank you for your positive feedback!
The crew sent to replace the windows…
The crew sent to replace the windows were fast and efficient . The windows are great. They were joy to have working here.
December 11, 2025
Reply from Window Nation - Greenville
We're happy to hear that the window replacement was fast and efficient and that you are pleased with the windows. We appreciate your positive feedback.
Great window,customer service,and the…
Great window,customer service,and the installer was awesome!! He worked by himself and was clean and very efficient!! I would recommend to anyone!!!
November 25, 2025
Reply from Window Nation - Greenville
We're happy to hear that you had such a wonderful experience with our window, customer service, and installer. We appreciate you recommending us!
Improvement with installers
Very respectful worker's from the sale man (was GREAT, got our price down as far as he could even calling his manager to lower), to the measuring guys (very friendly and interacted with us and our kids as if they was family but professional.), and the installers (great guys just need some improvement). When it come to installing our windows they forgot our big window and had to drive back 5 hours, so that put them behind and they had to come back another day (didn't call ahead to let us know they was coming the second day) and it was like they was rushing, they had to hurry to complete the windows because they had another job to go to and let my 16 year old daughter sign off (when she told them we was coming right back) they told her they couldn't wait they had another job to go to. They left broken glass everywhere and we have a pet and little kids..
November 9, 2025
Reply from Window Nation - Greenville
We appreciate your feedback. We're glad the salesperson and measuring team were great. We apologize the installation team forgot the large window, returned without notice, rushed the job, and left glass. We'll address this to improve our service and ensure safety.
Crew new windowsworked really hard..turned garden…
Crew worked really hard..turned garden window to a picture
November 11, 2025
Reply from Window Nation - Greenville
We're so happy our crew's hard work transformed your garden window! Thank you for sharing your positive experience with us.
The guys were very professional
The guys were very professional. Respectful of our home. Cleaned up very well afterwards
November 10, 2025
Reply from Window Nation - Greenville
We're happy to hear that our team acted professionally and respectfully in your home. We appreciate your positive feedback about our cleanup efforts.
Showed up thirty minutes early prepped
Showed up thirty minutes early prepped, properly to not damage my property. They were professional while in my home. Completed their jobs with precision, and we're gone after installing eleven windows in four hours.
November 4, 2025
Reply from Window Nation - Greenville
We're happy to hear that the team arrived early, prepared, and completed the window installation with precision and professionalism. Thank you for your positive feedback and for sharing your experience.
The installation crew done a great job…
The installation crew done a great job and very polite , neat and clean. This crew was professional from start to finish. Great job guys and thank you
October 31, 2025
Reply from Window Nation - Greenville
We're happy to hear that the installation crew did a great job! It's wonderful to know they were polite, neat, and professional throughout the entire process.
The sales guy said they would ask what…
The sales guy said they would ask what color to use on outside trim White or Cream. Install White and did not ask. Quantity of work good. windows looks good and window quality is good.
October 31, 2025
Reply from Window Nation - Greenville
We appreciate your feedback and are glad the window quality and work quantity met your expectations. We regret not confirming the trim color with you before installation.
Window replacement in 1976 mobile home
The windows and installers arrived on schedule. Tear out of old windows was done well, but with difficulty. "Hardest ones ever" New windows installed patiently and with detailed attention.
Fill and caulking done well.
Job cleanup outstanding.
August 18, 2025
Reply from Window Nation - Greenville
We're happy to hear our installers arrived on time and were meticulous with the new window installation. We appreciate you noting the detailed work and thorough cleanup! Thanks for your positive feedback.
Extremely professional installers
Extremely professional installers. They were efficient, knowledgeable in their job and done a good job.
October 24, 2025
Reply from Window Nation - Greenville
We're happy to hear that our installers were professional, efficient, and knowledgeable. Thank you for acknowledging their excellent work and your positive feedback.
I'm just very impressed with the…
I'm just very impressed with the honesty and respect of all of the people I've had the pleasure of dealing with about my windows.
October 14, 2025
Reply from Window Nation - Greenville
We're happy to hear that you had such a positive experience! It's wonderful to know that our team's honesty and respect made a great impression regarding your windows.
Everything that was promised was done
Everything that was promised was done. The installation was fast,clean and professional. I would recommend Window Nation.
October 20, 2025
Reply from Window Nation - Greenville
We're happy to hear that our team delivered on its promises with a fast, clean, and professional installation. Thank you for recommending us!
Great job they did forget one widow but…
Great job they did forget one widow but they were very good at making the installation quick and easy
October 13, 2025
Reply from Window Nation - Greenville
We appreciate your feedback and are glad the installation was quick and easy. We're sorry a window was missed and will address this.
1 White Crescent Lane, Simpsonville SC
Timely, professional service and good quality of work. Also, worked cooperatively to address any issues found.
October 10, 2025
Reply from Window Nation - Greenville
We're happy to hear that you received timely, professional service and good quality work. We appreciate your feedback about addressing any issues found. Thank you!
Great job installing my screens.
October 2, 2025
Reply from Window Nation - Greenville
Window Nation Wonderful! Thank you for the feedback on your screen installation.
Oscar and his crew
Oscar and his crew work an entirely full day, with rain in the morning Until darkness, they were able to replace 14 windows from start to finish, I’m very happy with the work they have done and with Window Nation to have a such professional and honest crew.
September 26, 2025
Reply from Window Nation - Greenville
We're happy to hear that the crew worked hard to replace your windows in one day. It's great to know that you're pleased with their work and appreciate their professionalism and honesty.
Great customer service
Great customer service. I had a few questions after the installation. They quickly contacted me to setup an appointment so that a technician could come out to show me how to operate the tilt in feature of the windows and identify a corrective action for the trim work that was not done to my satisfaction. They have worked hard to make sure that they have a happy customer and I appreciate that.
September 11, 2025
Reply from Window Nation - Greenville
We're happy to hear that our team provided great customer service and addressed your questions after the installation. We appreciate your feedback and are glad we could ensure your satisfaction. Thank you!
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