🪟 The Window Source Replacement Window Company in New Castle, NH Double Hung Windows Installed

Nestled along the New Hampshire coast, New Castle is known for its historic homes, ocean views, and timeless New England beauty. At The Window Source of New Hampshire, we take pride in helping homeowners preserve that character while improving comfort and efficiency through expertly installed double-hung replacement windows.

Blending Classic Style with Modern Performance

New Castle’s unique charm deserves windows that enhance its beauty, not change it. Our double-hung windows are designed to complement both traditional and modern homes — maintaining the classic look while adding today’s energy-saving technology.

Each window features insulated glass, precision weatherstripping, and durable vinyl frames that stand up to coastal conditions. The sashes tilt inward for easy cleaning and glide smoothly for ventilation, making them as functional as they are elegant. Whether your home overlooks the harbor or sits near Great Island Common, you’ll appreciate windows that handle salt air, humidity, and temperature swings with ease.

Experienced Local Installation

Because we’re based just down the coast in Seabrook, NH, our team understands what it takes to install windows that last in seaside environments. Every project begins with custom measurements and ends with a flawless, weather-tight fit. Our installers are courteous, detail-oriented professionals who treat your home with the respect it deserves. And with a lifetime warranty on both product and installation, you’ll enjoy peace of mind for years to come.

Preserving New Castle’s Coastal Heritage

We’re proud to serve New Castle and the greater Seacoast region, including Portsmouth, Rye, and North Hampton. From historic restorations to modern upgrades, our goal is to deliver replacement windows that improve your home’s comfort and energy efficiency — without sacrificing its coastal charm.

Schedule Your Free Estimate

If you’re ready to update your home with double-hung replacement windows that complement New Castle’s character and protect against the elements, contact The Window Source of New Hampshire today. Schedule your free, no-pressure estimate and discover why Seacoast homeowners trust our local team for craftsmanship, service, and value that endure.