The Window Source of NH

Keep It Warm Inside Your Home

Invest in new windows and improve your heat efficiency. Double-Hung in White, Energy Star Certified, 100% Transferable Lifetime Warranty!

The Window Source of NH

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(888) 282-2912

779 Lafayette Rd Suite 1
Seabrook, NH 03874

Installing New Windows, Siding & More in

  • Seabrook
  • Smithtown
  • Weare Corner
  • Atlantic
  • Riverside
  • Amesbury
  • And More!


Entry Doors

Patio Doors


  • Picture Window Replacement and Installation
  • Awning Window Installation and Repair
  • Casement Window Installation and Repair
  • Double Hung Window Installation Estimates
  • Double Hung Window Repair and Installation
  • New, Heavy Duty Entry Door Replacement and Installation
  • Sliding Patio Door Repair and Installation
  • Whole House Siding Installation

Storm Doors

Sliding Patio Door


Picture Window


Entry Door


Double Hung Window

Awning Window

Casement Window

Double Hung Windows

Get Free Estimate

Professional Windows and Doors Installed in Seabrook, New Hampshire

Whether a home is brand new or getting older, there’s always a chance you’ll need replacement windows. When selecting the right window replacement company, the windows matter, but that isn’t the only thing to consider. The installation process matters just as much when it comes to aesthetics, protection, and windows that last. The Window Source of New England offers replacement and new home windows for anyone in Seabrook or beyond. Choose from many sizes, styles, and designs to ensure the final product looks fantastic on your home. We offer various energy-efficient windows to keep extreme temperatures outside and help you save on your energy bill.

Consider an Awning Window, Bay Window, Custom Window, or Casement Window

All of the windows installed by The Window Source of New England are designed for the climate and architecture of the area. We use techniques that ensure your home stays comfortable in any season. Our double-hung windows are a great example of easily maintained and used windows for the home. Our team will install and secure them to last. In addition, a warranty is provided on all our products and services. Looking for extra services like home siding replacement, patio door installation, or new entry doors for the front of the house? The Window Source of New England is here to help in all those situations. Choose items that match your exterior house colors for a cohesive look that everyone notices when walking by.

The Window Source of New England for Quality Windows and Doors in New Hampshire

For the top window replacement company in Seabrook, you can depend on The Window Source of New England. We’re trusted suppliers and installation experts of windows and doors. You can reach out to us today to learn more about our services or get a free estimate for the home improvement project of your choice.

Real, Local Reviews From Happy Customers


The Window Source of southern NH installed new casement windows in an addition on our existing home. Communication and scheduling was excellent, installer Craig is very professional. Windows look great and match the existing house which is 40 years old. Told the owner, Skip we will be calling him again to replace a couple old windows. A+ company and customer satisfaction!!


I bought 7 windows from Window Source. There was a slight problem with one of the windows. Skip, the owner, was quick in responding and took care of the problem right away. I was very happy with the installer, Leroy, he was professional, polite and cleaned up. When he left, he took the old windows and storm windows and left me with new insulated mess at all. I need a new front door and will certainly call Window Source. Thank you Skip, Leroy and Andrea.

Maggie Plasse

We reached out to the window source to install 9 new windows in our 1900 year old house. Gary who came out to give us a quote was easy to work with and very informative. He walked me through what the process would be and why we needed what we needed. We had two other companies give us quotes but we felt the quality and knowledge of the window source company was the best option for us. For installation it was such an easy process and the installers were very professional. They completed the project in two days and it looks amazing. They really did a great job and I’m very happy we decided to choose the window source.

Kyra Caron

I had 19 windows and a glass sliding door installed.
Incredible experience. Professional company, great quality products and the entire crew from sales to the installers were outstanding.
Highly recommend this company.

larry mcginness

I love my new windows. Everyone I dealt with from sales to installation was very nice. Installers were very neat, cleaned up after themselves and did a fantastic job. My husband was impressed with how hard they worked. I would highly recommend this company.

Amy Difeo

Window Source Q&A

Is it worth it to replace my windows?

Is it worth it to replace my windows?

Older windows are notorious for being leaky and inefficient. At The Window Source, we are constantly improving our technology to be more energy efficient. Installing new windows can realize up to an 80% return on investment when you sell your home. Coupled with the savings you’ll see on your energy bill, the cost of window replacement can often be quickly offset.

How do I know when to replace my windows?

How do I know when to replace my windows?

Anytime you notice damage on your windows, it is a good time to have them looked at by an expert. Damage can be caused by water, insects, and father time. Your old windows ar inefficient, unattractive, and can cause damage to your home, call our experts today!

How much will it cost to replace my windows?

How much will it cost to replace my windows?

The best way to determine the cost is to contract a professional and receive an in-home estimate. At The Window Source, our estimates are FREE to you.

What types of payment methods and financing do you offer?

What types of payment methods and financing do you offer?

We offer a variety of payment methods and financing options. Please contact us to hear our options.

What Warranty do you offer?

What Warranty do you offer?

Lifetime Warranty - All Window Source products come with a limited lifetime warranty. You will have peace of mind knowing that you will only make this investment in your home once. Ask your window consultant for details.