Frequently Asked Questions
There is only one reliable way to compare windows and that is by asking for the NFRC* rating for each window that you are considering. NFRC labels are independently certified and rate the whole window performance by U-Factor and Solar Heat Gain Coefficient (SHGC). The lower these ratings are the better the window will perform. The priority of U-Factor versus SHGC depends on your climate. You should ignore all the sales hype and choose the best NFRC ratings for your climate at the best cost.
Energy Star is a window certification program administered by the Federal Government to help you select energy efficient windows optimized for your climate. A window must meet minimum performance criteria to qualify. These criteria are based on NFRC whole window performance ratings and are different for each of four climate zones as follows:
Northern Zone (blue): U-Factor of .30 or less, SHGC any
North Central Zone (yellow): U-Factor of .32 or less, SHGC of .40 or less
South Central Zone (orange): U-Factor of .35 or less, SHGC of .30 or less
Southern Zone (red): U-Factor of .60 or less, SHGC of .27 or less
Yes, any window or patio door ordered with a LowE glass upgrade will qualify for the Energy Star guidelines for the climate zone where purchased. This guarantee always comes in writing on your contract specifications so you will be assured of ordering and receiving the best LowE glass that is optimized for your particular climate zone.
The Window Source provides you with extremely affordable prices on premium vinyl windows because of our large national buying power. Our easy purchasing process allows us to be extremely efficient and pass the savings along to you.
Yes, a window needs to be properly measured to fit the opening and allow adequate tolerance for pluming and squaring the new window. If the new window is not properly plumbed and squared it will not seal and operate properly no matter how good the quality of the new window.
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ExcellentBased on 166 reviews
Trustindex verifies that the original source of the review is Google.tammy smithFebruary 27, 2024Gabriel and his crew are wonderful. windows are beautiful and they cleaned everything before leaving. highly recommend.Trustindex verifies that the original source of the review is Google.Charlotte BonillaJanuary 22, 2024The windows are beautiful. The installation was quick and efficient, and they cleaned up all the mess. But the best part was when we got our first power bill after the installation. We were spending way too much money on power because we had little to no insulation (around $350 per month, more in the summer). I just received the August bill, and it was $120. I knew we'd save a little money. I just couldn't imagine how much. Thanks guys. We are thrilled with our new windows!Trustindex verifies that the original source of the review is Google.Travis KiralyDecember 1, 2023From start to finish, our experience with The Window Source Of The Carolinas was nothing short of exceptional. The entire process was incredibly smooth, thanks to their proficient installation experts and attentive customer service. We were pleasantly surprised by the competitive pricing, which was lower than our initial expectations. Without any hesitation, we highly recommend The Window Source Of The Carolinas for all your window and door needs. Our journey with The Window Source Of The Carolinas began with their knowledgeable and friendly staff, who patiently guided us through the selection process. They took the time to understand our needs, preferences, and budget, ensuring that we made an informed decision. Their expertise and attention to detail gave us confidence in our choices. When it came to installation day, the experience was stress-free and efficient. The installation team arrived promptly, well-equipped, and demonstrated exceptional skill and professionalism. Their precise workmanship and expertise were apparent throughout the process, as they flawlessly installed our new windows. Furthermore, they treated our home with the utmost care and respect, leaving no trace of debris behind. Throughout the entire project, The Window Source's customer service exceeded our expectations. They were readily available to answer any questions or concerns, providing timely and thorough responses. Their dedication to ensuring our satisfaction was evident at every stage of the process, making us feel valued and well taken care of as customers. Not only did The Window Source Of The Carolinas deliver on their promise of outstanding quality, but their pricing was also pleasantly affordable. We were pleasantly surprised to find such excellent value for our investment. The Window Source Of The Carolinas demonstrated that top-notch products and service can be accessible to all homeowners, no matter their budget. The Window Source Of The Carolinas was impeccable from start to finish. The combination of their talented installation experts, competitive pricing, and exceptional customer service left us in awe. We will be using them again in the near future and telling all our friends to reach out for their personal needs.Trustindex verifies that the original source of the review is Google.Teresa BradleyAugust 22, 2023Cannot say enough about The Window Source. Chasity was great from beginning to end. Gabriel and his crew were awesome! Great work, showed when they said, double checked everything before starting and left the area spotless. Would highly recommend them.Trustindex verifies that the original source of the review is Google.Steve TolsonAugust 17, 2023I contacted three window companies for estimates to replace my 17 windows and I am certainly glad that The Window Source of the Carolinas was one of them. My experience was top notch from my initial meeting with Greg, the owner, customer service and scheduling with Chastity and one of the best crews I have ever had the pleasure of working with. Gabriel and crew were polite, professional and quality focused. The finished installation is beautiful (completed in one business day), the cleanup was perfect and the overall experience made payment almost pain free. If you need quality windows, a fair cost, great customer service and an installation crew that will confirm you made the right choice, look no further. Great job all and thank you Gabriel! Steve and Lisa Rock Hill, SC.Trustindex verifies that the original source of the review is Google.ed garneauJuly 29, 2023They were AMAZING from calling and getting a quote, to the demo, kept me informed on the progress of my windows, came out the NEXT DAY when completed to install. Chasity was great thru the entire process, answered or replied back immediately. Day of install Gabriel and his crew were timely, professional and meticulous to EVERY detail… I can’t wait to refer EVERYONE I know wanting windows to this company… Thank you to ALL, for a job, EXCELLENTLY fine….. 10+* from me…..Trustindex verifies that the original source of the review is Google.SuperHappigirlMay 18, 2023They quoted 2 days but got it done in 1. They did an exceptional job and took care of things above and beyond to make sure it looked beautiful. The crew was wonderful, courteous, and fast. Would highly recommend!Trustindex verifies that the original source of the review is Google.Brian MinnotteMarch 20, 2023Bruce was absolutely fantastic with installing the 6 new windows. Even though there was more work needed than initially planned, he did not complain and worked so hard to get it done. Thanks for the new windows!!
