Work with New Hampshire’s Premiere Window and Door Installation Professionals

Seacoast Replacement Windows has the products and expertise you need for your window and door projects. Contact us today and see why we’re the right choice!

They were amazing. Polite, quiet, respectful. Did an awesome job and no mess made. I would highly recommend this company to anyone!

Amy M
Facebook Review

Mike and Jon did all the windows in my house and the process went very well. The windows are top quality and I notice a big difference in the wintertime.

Josh D
Yelp Review

What a great experience! Everything was thoroughly explained, the install was quick and clean and the owners were on-site the entire time.

Jay R
Yelp Review

These guys are great! At least one of the owners are on site every time, they work quickly and efficiently, they are very friendly, and their windows are fabulous! I highly recommend them to anyone.

Alysha C
Yelp Review

John and Mike did a fabulous job. Installation was quick and clean. The window is great! Quality – top. Prices are fair, and they do the work themselves.

Carrie N
Yelp Review

I can’t be more pleased with our windows. John and Mike are great with the concern that you are happy with the work. I would recommend Seacoast Replacement windows to anyone looking.

Matthew R
Yelp Review

Professional Window & Door Replacement & Installation

Seacoast Replacement Windows has the products and expertise service that you need for your replacement window and door projects. Contact Seacoast today and you’ll see that it’s the right choice for all of your window projects!

Located in Plaistow NH but covering all of southern New Hampshire and northeast Massachusetts, Seacoast Replacement Windows is owned and operated by Mike Lewis and John Sullivan. Combined they have over 20 years of experience selling and installing replacement windows. Mike and John are hands-on owners; they are the ones who visit customers’ homes to present their high quality replacement window products.

Ready for new Windows? Get a no-cost free estimate

Simply use our easy form or give us a call at 1-800-693-1307 to get your free estimate.

Your information is only used for project quotation purposes. Our team will never sell your data to a third party.

Explore the Variety of Windows and Doors We Install

Awning Window Replacement

Bay Window Replacement

Casement Window Installation

Double Hung Windows

Slider Window Installation

Basement Hopper Windows

Bow Window Replacement

Noise Reduction Windows

Services

Gallery

Service Areas

Learn why your neighbors trust our team

We’re proud of the work we do for Massachusetts residents and the reputation for quality we’ve built. See what people are saying:

Happy Customer Reviews from Verified Clients

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Proud Years in Business Serving NH Residents

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Different Window & Door Products Available

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Cities and Towns Proudly Served in New Hampshire

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Full-time Expert Employees on Our Team

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They were amazing. Polite, quiet, respectful. Did an awesome job and no mess made. I would highly recommend this company to anyone!

Amy M
Facebook Review

Mike and Jon did all the windows in my house and the process went very well. The windows are top quality and I notice a big difference in the wintertime.

Josh D
Yelp Review

What a great experience! Everything was thoroughly explained, the install was quick and clean and the owners were on-site the entire time.

Jay R
Yelp Review

Alysha C
Yelp Review

John and Mike did a fabulous job. Installation was quick and clean. The window is great! Quality – top. Prices are fair, and they do the work themselves.

Carrie N
Yelp Review

I can’t be more pleased with our windows. John and Mike are great with the concern that you are happy with the work. I would recommend Seacoast Replacement windows to anyone looking.

Matthew R
Yelp Review

Quality materials from the best brands.

At Seacoast Replacement Windows, we don’t skimp on quality when it comes to our work and our materials. Our window and door replacement company in Plaistow NH provides both homeowners and businesses with dozens of door and window options from Andersen Windows & Doors, Harvey Building Products, and Soft-Lite Windows. All orders are placed by our staff on your behalf and installed by our experts.