⭐ 4.8 ★ | 830+ Google Reviews • BBB A+ Rated | Serving 545+ Towns in MA, NH & ME — Check Your Town »
Stop Drafts Before Winter Hits: 50% Off Installation or 0% Financing Until 2027 + $250 Bonus When You Book Online!
"*" indicates required fields
Make your house the home of your dreams with Replacement Windows in Somersworth NH from Coastal Windows & Exteriors—the #1 woman-owned window company in New England. We deliver windows that exceed Energy Star 7.0 standards while stopping drafts with the industry’s best air infiltration rating of 0.1 CFM. Bring your dream home to life with energy-efficient upgrades and stunning indoor comfort.
Built for New England weather and backed by certified contractors with LEAD and Installation Masters credentials, our windows perform beautifully season after season. All popular window styles available! Contact us today to start your transformation.




Stop wasting money on heating and cooling bills with windows that exceed Energy Star 7.0 standards.
Every window is custom crafted to match your home’s unique style and character.
Never worry about painting or staining again with maintenance-free vinyl construction.
Vinyl window replacement delivers an 85% return on investment according to the latest Cost vs Value report.
Seal out cold air and keep your home comfortable while reducing energy waste by up to 25%.
Rest easy knowing your windows come with excellent protection for years of worry-free enjoyment.
Cold drafts creeping through your windows? High energy bills making you cringe? You deserve better than uncomfortable rooms and wasted dollars. Somersworth homeowners turn to Coastal Windows & Exteriors for solutions that actually work.
We’re the #1 woman-owned window company in Somersworth NH families rely on for beautiful and energy-saving windows. Our products exceed Energy Star 7.0 requirements and deliver the tightest seal in the business. Picture lower utility costs, warmer winters and cooler summers—all while boosting your home’s curb appeal.
From single window swaps to whole-home makeovers, our certified team brings skill and care to every job. Ready to transform your space? Reach out today for your free consultation and see what’s possible!
“We contacted Coastal Windows & Exteriors after researching for a company that was reliable and experienced. After reading the numerous reviews it was a no brainer to have them come to our home. Right from the beginning our specialist was outstanding and great to work with. He was on time, very informative, professional, personable and very knowledgeable. He showed us options, was very attentive to our needs and our budget, and showed us samples of the products. Based on our interaction, we decided we did not need to look any further. This is the company we want to work with.”




Need help with financing? We make the process simple and stress-free! Our quick application takes under 10 minutes and our friendly team guides you through each step. Choose from 0% Interest-Free Financing and payment plans designed to fit your budget. Your dream home shouldn’t have to wait—let’s make it happen together!
Somersworth homeowners enjoy access to every window style imaginable. Double hung windows bring timeless charm with smooth operation and classic good looks. Casement windows crank open wide for maximum airflow and modern appeal. Bay and bow windows add architectural interest while creating cozy nooks and bringing in abundant natural light.
Choosing quality windows transforms how your home feels and performs. Windows from Coastal Windows & Exteriors feature vinyl construction with foam-filled frames—delivering the tightest seal available at just 0.1 CFM.
Our windows feature warm edge spacer technology and inert gases between panes for optimal results. These features work together to stop heat transfer and prevent moisture buildup along glass edges. Acrylic-bonded or steel spacers add another layer of protection against condensation while boosting long-term durability and comfort.
Contact us today to learn how upgrading to triple pane windows could save you hundreds annually on energy costs!
Somersworth NH sits roughly 72 miles north of Boston MA along the scenic Salmon Falls River. This small city packs big character with a fascinating mill-town heritage dating back to 1729. The Great Falls on the Salmon Falls River powered textile mills that transformed this community into a thriving industrial center. Historic brick mill buildings still stand today—many beautifully converted into residential and commercial spaces that honor the city’s hardworking past.
The Summersworth Historical Museum preserves artifacts and stories from generations of families who built this community. Downtown showcases charming Victorian architecture, particularly in the historic district known as “The Hill” where restored homes reflect the prosperity of earlier times. Housing styles range from classic mill-worker tenements to elegant Victorian residences and newer contemporary developments. Today’s Somersworth blends its proud history with modern amenities—serving as a welcoming community for families who value small-town character with easy access to Portsmouth’s seacoast and the White Mountains.
Our window installation approach in Somersworth NH delivers results you’ll love:
Window replacement investment varies based on your specific needs:
Coastal Windows & Exteriors has earned impressive recognition for outstanding service and unwavering dedication to quality:
Our founder’s leadership earned national recognition for excellence in home improvement services.
We’re proud multi-year winners celebrated for exceptional exterior remodeling work throughout the region.
This honor reflects our commitment to community involvement and customer satisfaction.
Leading the industry with integrity, quality craftsmanship and innovative customer service.
Your family’s safety is our priority—we’re fully certified for environmentally responsible installations.
⚠️ Please check the box to confirm you understand your appointment is not yet finalized. A Coastal Windows & Exteriors representative will call shortly to verify your details and schedule. To secure your appointment, please answer or return the call.
Request a free No-Contact Estimate
Ready to see your dream home? Request a free no-contact estimate today or speak with one of our representatives.
Oops! We could not locate your form.
Request a free No-Contact Estimate
Ready to see your dream home? Request a free no-contact estimate today or speak with one of our representatives.
Request a free No-Contact Estimate
Oops! We could not locate your form.
Oops! We could not locate your form.
Request a free No-Contact Estimate
Oops! We could not locate your form.
"*" indicates required fields
Request a free No-Contact Estimate
Oops! We could not locate your form.
We use cookies to improve your experience on our site. By using our site, you consent to cookies.
Manage your cookie preferences below:
Essential cookies enable basic functions and are necessary for the proper function of the website.
CloudFlare provides web performance and security solutions, enhancing site speed and protecting against threats.
Service URL: developers.cloudflare.com
These cookies are needed for adding comments on this website.
Google Tag Manager simplifies the management of marketing tags on your website without code changes.
You can find more information about our Cookie Policy and Privacy Policy.