.png)
About NSE Windows
NSE Windows is a Marvin Authorized Dealer and Marvin Certified Installing Retailer serving New York, with a strong focus on Long Island. We specialize in premium Marvin windows and doors, combining industry-leading products with expert installation and a service-first approach.
For homeowners across Long Island and the greater New York area, choosing the right window and door company is about more than just products — it’s about trust, craftsmanship, and long-term support. At NSE Windows, we deliver all three.
Marvin Window and Door Experts
As an authorized Marvin dealer, we provide access to the full line of Marvin windows and doors, including:
-
Marvin Elevate Collection
-
Marvin Essential Collection
-
Marvin Signature Collection
-
Custom Marvin window and door solutions
Our team understands the performance demands of New York homes — from coastal Long Island properties to suburban and urban renovations. We help homeowners select the right Marvin products for energy efficiency, durability, architectural style, and long-term value.
Marvin Certified Installing Retailer
NSE Windows is proud to be a Marvin Certified Installing Retailer (CIR). This distinction means:
-
Our installation teams are trained to Marvin’s exact standards
-
Installations meet manufacturer specifications
-
Your investment is protected with proper installation practices
-
We deliver a consistent, high-quality customer experience
Proper installation is critical to the performance and longevity of your windows and doors. Our certification ensures that your Marvin products perform exactly as designed.
Serving Long Island & New York
We proudly serve homeowners throughout:
-
Long Island (Nassau County & Suffolk County)
-
Brooklyn
-
Queens
-
Select areas of greater New York
Our deep roots in the Long Island market allow us to understand local building codes, architectural styles, coastal considerations, and homeowner expectations.
A Service-First Window & Door Company
At NSE Windows, service is not an afterthought — it’s our foundation.
From your first consultation through final installation and beyond, we focus on:
-
Clear communication
-
Detailed project planning
-
Respect for your home
-
Clean, professional installation
-
Ongoing post-installation support
We believe premium products deserve premium service. That’s why homeowners across Long Island and New York trust NSE Windows not only for Marvin windows and doors, but for a seamless, professional experience.
What our customers say about us...
5.0
Reviews
Teri S.
“I love my new bow window and NSE did an amazing job of installing it. The job was done quickly and meticulously. I was concerned that I would have to do some stucco work on the outside of the window but Mike and his team of professionals left everything exactly as it was before they pulled out the old window and installed the new. Thank you NSE!”
Cemil L.
“Glad I went with NSE for my Marvin windows. Eric my rep was very professional to work with. From start to finish it was a smooth transition. He took the time to make sure I made the right choices as if he were putting the windows in his own house. Windows came in when expected . I Couldn’t be more satisfied with the outcome. If you are looking for quality windows with great service go with NSE windows and ask for Eric.”
