Window Replacement & Installation
Upgrade Your View. Boost Comfort. Improve Efficiency.
At NISI Home Improvement, we specialize in window replacement that transforms the way your home looks and performs. From outdated windows that leak energy to broken frames and fogged glass, we replace your windows with high-quality, energy-efficient options that offer beauty, security, and long-term value.
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🔄 Window Replacement: The Smart Upgrade
Old or damaged windows don’t just affect appearance — they drive up your energy bills and reduce comfort. We help homeowners replace drafty, outdated windows with modern, durable, and stylish solutions.
Benefits of Window Replacement:
Lower heating & cooling costs year-round
Better insulation and noise reduction
Enhanced natural light and visibility
Smoother operation and easier maintenance
Increased home resale value
🛠️ Window Installation Services
Building a new space or adding windows to a remodel? Our expert team offers precision installation with clean, professional results — every time.
We take care of everything, including:
Accurate measurement and custom sizing for a perfect fit
Careful removal of old windows or cutting new openings
Full insulation and weatherproof sealing to eliminate drafts
Trim, flashing, and exterior finish for a polished, seamless look
Post-installation inspection and cleanup — your home stays spotless
🛡️ Why Choose NISI Home Improvement?
Licensed & insured installation specialists
Energy Star-rated windows from top manufacturers
Accurate, upfront pricing — no surprises
Fast project completion with full cleanup
Local company with 5-star service reputation
📞 Let’s Get Your Home Sealed, Styled & Energy-Smart
Don’t let outdated windows hold your home back. Contact us today for a free in-home consultation and window replacement estimate.
📞 CALL: (516) 860 52 89
📍 Proudly Serving: Nassau & Suffolk County
