Window Replacement Long Island
Nassau and Suffolk County homeowners trust us for expert window installation. Energy-efficient vinyl, casement, bay, and wood-clad windows — installed by licensed professionals with a warranty you can count on.
BBB Accredited A+
Since 2011
Our Services
Window Solutions for Every Long Island Home
From vinyl double-hungs for your Cape Cod to custom bay windows for your colonial, we install every major window type and brand.
Homes Completed
In Business
Google Rating
Active Install Crews
Our Work
See the Transformation
Drag the slider to compare before and after on a recent whole-house window replacement in Smithtown.
Before
AfterGallery
Window Installations Across Long Island
Every project is a custom fit. Browse recent installations across Nassau and Suffolk counties.
Customer Reviews
What Long Island Homeowners Say
4.9-star average across 604+ verified reviews on Google, Yelp, Angi, and BBB.
James and his crew replaced all 16 windows in our Levittown ranch in just two days. The difference in drafts is night and day. Our heating bill dropped by almost $200 a month last winter.
Karen M.
Levittown, NY
We got quotes from four companies for our bay window project. Window Company Long Island was the most transparent about pricing and the only one who showed up on time for the estimate.
Tom & Lisa R.
Massapequa, NY
Had 10 casement windows installed in our Huntington colonial. The crew was professional, cleaned up everything, and the windows look incredible. Already recommended them to two neighbors.
David P.
Huntington, NY
After the nor'easter damaged three of our windows, they came out the next day for an emergency assessment. New windows were installed within a week. Can't say enough good things.
Maria S.
Babylon, NY
We chose the Andersen 400 Series for our Garden City Tudor and they look absolutely perfect. The team understood the historic character of our home and matched everything beautifully.
Robert J.
Garden City, NY
Best home improvement decision we've made. The triple-pane windows they installed keep our house so quiet — you can't even hear the traffic on Hempstead Turnpike anymore.
Angela W.
East Meadow, NY
FAQ
Window Replacement Questions
Answers to the questions Long Island homeowners ask most about replacement windows, costs, and our process.
Free Estimate
Ready for New Windows?
Get a no-obligation quote from Long Island's trusted window replacement experts. Most estimates completed same day.
Call (516) 706-4822Homes Completed
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Years Experience