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  • Window Replacement & Repair — Energy Efficiency, 
    Historic Match & Proper Flashing

    KRS Pros provides expert window installation and repair across NYC and the Tri-State area — specializing in energy-

    efficient, historic replication, and leak-proof installations.

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Full-Service Window Replacement & Repair in NYC & Tri-State

From frame repairs and glass installation to energy-efficient upgrades — we handle every detail with precision and care.

Energy-Efficient Windows

Upgrade to modern, insulated windows that reduce energy costs and improve indoor comfort—all while enhancing your home’s appearance.


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Custom Window Installation

From bay to picture windows, our experts install custom designs that perfectly match your home’s architecture and lighting needs.


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Glass & Frame Repairs

Cracked glass or damaged frames? Our repair specialists restore clarity, function, and security with precision and care.


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Window replacement for apartments, rowhouses & multi-family buildings

KRS Pros provides window replacement and repair services for residential properties across NYC and the Tri-State area. Our team installs ENERGY STAR-rated windows, double- and triple-glazed units, and custom historic-replication windows to preserve architectural character while improving thermal performance. Proper flashing, air-sealing, and waterproofing are installed to prevent leaks and drafts common in older buildings.


We handle unit replacement, frame repair, reglazing, sash repairs, and are experienced with window types including double-hung, casement, awning, hopper, and fixed units. For multi-family properties, we coordinate permits, safe installation hoisting, and interior protections to minimize disruption.

Complete Window Replacement & Repair Services

From precise measurements to flawless installation, our experts provide complete window replacement and repair solutions that meet NYC building codes and exceed quality expectations. Every project is completed with attention to energy efficiency, safety, and long-lasting performance.

Energy-efficient windows 
& ENERGY STAR options

Upgrade to double- or triple-pane insulated glass units with low-E coatings and argon gas fill. Reduce energy bills and improve comfort with certified ENERGY STAR windows.

Historic window replication 
& custom millwork

We fabricate or source exact-match profiles, muntins, and hardware to preserve landmark 

and historic district compliance while modernizing performance.

Flashing, waterproofing & air-sealing

Professional installation includes integrated flashing, sill pans, sealants, and backer rod to eliminate water infiltration and air leakage at the window perimeter.

Window maintenance, reglazing & emergency repairs

From broken glass replacement to sash cord repair, storm damage, or foggy insulated units — we offer fast, reliable repair services.


Recent Window Replacement & Repair Projects

Frequently Asked Questions

How long does window replacement take?

Individual windows often install in 1–3 hours; whole-building projects vary by size and access.

Do you handle DOB permits for windows?

We evaluate permit needs and file DOB applications when required.

Can you match historic window profiles?

Yes — we fabricate or source windows to match historic profiles and millwork.

Are your windows energy-efficient?

Yes — we offer ENERGY STAR-rated and insulated glazing options.

Do you repair drafts and water infiltration?

Yes — we install proper flashing, seals, and insulation to resolve drafts and leaks.

Do you offer warranty on windows?

Yes — manufacturer and workmanship warranties apply.

Ready for Better Windows?

Get a professional assessment and detailed estimate for your window replacement or repair project.

Request Free Estimate
Call Now