About NSE Windows

NSE Windows is a window and door company that specializes in providing high-quality solutions for residential and commercial projects. They are recognized for their expertise in complex window units, such as multi-slide and bi-fold doors. NSE Windows prides itself on being a reliable partner, fostering strong relationships with clients and other professionals involved in construction projects. Their commitment to excellence is reflected in their certifications, including NFRC, BBB, Marvin Windows Customer Service Award, Best of Houzz Service Award, and Guild Quality Membership. Customers praise NSE Windows for their professional, honest, and efficient service, from initial consultation to installation. Clients appreciate the knowledgeable staff who patiently guide them through the selection process and ensure a smooth installation experience.

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Reviews for NSE Windows

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Jun 2025
Very helpful and knowledgeable staff
May 2025
In the stressful world of home improvement (especially on Long Island where every contractor's eyes light up with dollar signs) it's a relief so find a truly honest and professional company. Eric Clemente is amazing, he listens attentively, and generously shares his many years of expertise and tasteful design wisdom. Measurements are laser accurate, and you will be provided with a detailed architectural "blueprints" of every window in your project. Marvin windows are top of line, as well as NSE's custom windows built to any spec of your design, including those epic floor to ceiling windows you find in most modern villain lairs. And probably most importantly, pricing is very fair, you'll be pleasantly surprised. I highly recommend NSE, you won't be disappointed.
May 2025
We had the pleasure of working with NSE to install 13 new windows and a new door in our home. Although it was a huge undertaking the sales process with Eric was quick, easy and thorough and the ordering and installation followed in the same regard. We felt comfortable the entire time. Eric listened to our wants and needs and constructed an affordable option using the quality products we wanted! We then had Mike and his team install the windows during a 3 day process- always communicating, friendly and professional. They went above and beyond and any concerns we had were always taken care of immediately. They were all exceptional to work with. We would recommend NSE for any home window installation! They were all great to work with and superior in their craft! Kevin & Kelly