28 Best Window Replacement Companies in East Merrimack, NH (Mar 2023)
Window Companies Near Me
If you're looking to upgrade to new windows, our list of the best window installation companies can help.
We analyzed all the top window installers in East Merrimack and selected the top 28 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated March 14, 2023
Why you can trust EcoWatch
Although eco-friendly energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your house's energy efficiency can also have a big impact on home energy conservation. If your house has old or damaged windows, your AC or heater could be working overtime to heat or cool your house. This means spending more on energy bills.
Thankfully, saving you money with upgraded windows also aligns with our goals of reducing energy usage for the environment.
Efficient windows are especially important in East Merrimack, where winters are long and cold. According to Energy Star, switching to energy-efficient windows can save the average homeowner up to $463 per year.
Best Overall
Renewal by Andersen
- Award-winning company
- Manufactures products in-house
- Great industry reputation
- More expensive than competition
Best Affordability
Window World
- Great industry reputation
- EnergyStar Partner
- Low prices relative to competitors
- Quality of service will depend on your area
Best for Businesses
Aeroseal Windows
- Many years of experience
- Great industry reputation
- Custom Designs
- Not ideal for residential installations
Best Window Replacement Companies in East Merrimack
The EcoWatch Reviews team researched dozens of providers that serve the East Merrimack area to find the top window installation companies by our standards. The installers mentioned in this article scored the best in our review categories, such as energy-efficient offerings, customer service, local expertise, availability, price and more.

Renewal by Andersen
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Award-winning company
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Manufactures products in-house
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Great industry reputation
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More expensive than competition
Renewal by Andersen has the best availability in East Merrimack. Andersen has been in the window business for around 27 years. Many positive reviews on customer review websites back the provider's reputation.
If you're looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, this may be the perfect provider for you.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to mention that you want high-quality Energy Star windows when inquiring. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.
How much does Renewal by Andersen cost in East Merrimack?Prices are not available on Andersen's website since the cost of window replacement depends on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. If you'd like more accurate pricing information, you can ask for a quote on the company's website.

Window World
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Great industry reputation
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EnergyStar Partner
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Low prices relative to competitors
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Quality of service will depend on your area
Window World offers windows expertise in East Merrimack. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window business for around 27 years. The provider has many glowing reviews from customers online.
It is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsThere are a wide variety of window types available from Window World, some of which are Energy Star products. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in East Merrimack?Prices are not available on Window World's website because the cost of window replacement depends on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. For more detailed information on pricing, you can inquire about a quote from the company.

Aeroseal Windows
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Many years of experience
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Great industry reputation
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Custom Designs
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Not ideal for residential installations
Aeroseal Windows offers the best window installation for businesses in East Merrimack. It's an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. Aeroseal has over 23 years of experience in the industry, and it currently serves 13 states and Washington D.C.
It has established itself as a company that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows' commitment to sustainability shows in its energy-efficient window offerings. The company claims it helps businesses save on energy expenses and reduce their carbon footprints with energy-efficient windows, as well as practices like Low-E glass coating, weatherstripping and more.
How much does Aeroseal Windows cost in East Merrimack?While pricing information is not readily available on Aeroseal's website, it provides high-quality windows at a competitive price point. Receiving a free quote on its website is the best way to get more accurate pricing information.

Universal Windows Direct
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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Quality of service will depend on your area
Universal Windows Direct offers the best warranty in East Merrimack. Universal has about 20 years of experience in the window installation business. Hundreds of positive reviews on customer review websites back the provider's reputation.
Universal may be the company for you if you're looking for one that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct offers some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to mention that you want Energy Star windows when inquiring. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.
How much does Universal Windows Direct cost in East Merrimack?Universal does not detail prices on its website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. Requesting a free quote on its website is the best way to know for sure.
We aim to stay unbiased and transparent by listing pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.
More Window Replacement Companies in East Merrimack
Merrimack Valley Glass & Mirror
Newburyport, MA-
Price Transparency
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Timely Service
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Excellent Customer Service
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No-fee Quotes
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Windows
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Stained Glass
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Residential Windows
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Business Windows
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Sliding Glass
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Aluminum Window Frames
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Glass Showers
NEWPRO
Woburn, MA-
Excellent Customer Service
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Award-Winning
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Helps Educate Customers
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No-fee Quotes
Services Offered
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Glass Showers
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Energy-Efficient Options
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Custom Window Designs
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Double-Hung
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Sliding Glass
Nashua Glass
Nashua, NH-
Excellent Customer Service
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Educational Website
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Price Transparency
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Locally Recognized for Quality
Services Offered
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Residential Windows
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Architectural Glass
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Tempered Glass
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Doors
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Custom Windows
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Commercial Windows
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Double-Hung
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Sliding Glass
The Window Source NH
Seabrook, NH-
Consistent Workmanship
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No-Hassle Pricing
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Excellent Customer Service
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Educational Website
Services Offered
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Architectural Glass
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Fast Delivery
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Energy-Efficient Options
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Custom Window Designs
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Double-Hung
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Sliding Glass
Window World of Boston
Woburn, MA-
Good Customer Service
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Arrives on Time
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Locally Recognized for Quality
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No-fee Quotes
Services Offered
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Sliding Glass
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Custom Windows
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Energy-Efficient Options
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Double-Hung
Timberlane Glass and Mirror
Plaistow, NH-
No-fee Quotes
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Price Transparency
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Helps Educate Customers
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Reliable Service
Services Offered
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Full-Service Installations
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Custom Window Designs
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Residential Windows
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Sliding Glass
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Business Windows
Rite Window
Woburn, MA-
Free Quotes
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Locally Recognized for Quality
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No-Hassle Pricing
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Good Customer Service
Services Offered
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Custom Window Designs
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Glass Showers
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Energy-Efficient Options
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Double-Hung
Pro Entry Installs LLC
Salem, NH-
Good Customer Service
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Price Transparency
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Locally Recognized for Quality
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Reliable Service
Services Offered
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Custom Windows
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Residential Windows
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Double-Hung
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Bay & Bow Windows
Window World of New Hampshire
Manchester, NH-
Charitable Giving
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Reliable Service
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No-fee Quotes
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Price Transparency
Services Offered
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Custom Windows
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Architectural Glass
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Sliding Glass
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Double-Hung
Guaranteed Aluminum & Vinyl Inc
Lowell, MA-
Good Customer Service
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Price Transparency
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Reliable Service
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No-fee Quotes
Services Offered
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Residential Windows
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Custom Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
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Sliding Glass
Demers Plate Glass Co
Haverhill, MA-
Helps Educate Customers
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No-Hassle Pricing
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Free Quotes
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Excellent Customer Service
Services Offered
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Residential Windows
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Architectural Glass
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Doors
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Custom Windows
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Aluminum Window Frames
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Commercial Windows
Pella Windows & Doors of Woburn
Woburn, MA-
Charitable Giving
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Good Customer Service
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Educational Website
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Award-Winning
Services Offered
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Custom Windows
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Sliding Glass
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Double-Hung
Clear Choice Home Improvements
Manchester, NH-
Reliable Appointment Windows
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Free Quotes
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Reliable Service
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Award-Winning
Services Offered
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Custom Window Designs
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Sliding Glass
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Double-Hung
Advanced Glass & Mirror
Westminster, MA-
No-fee Quotes
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Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Residential Windows
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Architectural Glass
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Glass Showers
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Custom Window Designs
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Commercial Windows
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Sliding Glass
Central Glass Co
Westminster, MA-
Helps Educate Customers
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No-fee Quotes
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Price Transparency
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Good Customer Service
Services Offered
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Residential Windows
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Architectural Glass
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Glass Showers
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Custom Window Designs
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Business Windows
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Sliding Glass
Red Dog's Roofing LLC
Fitchburg, MA-
Excellent Customer Service
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No-Hassle Pricing
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Free Quotes
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Reliable Service
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
Milford Windows & Siding
Milford, NH-
Educational Website
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Consistent Workmanship
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No-fee Quotes
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Price Transparency
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
Queen City Glass & Mirror
Manchester, NH-
Price Transparency
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Good Customer Service
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Consistent Workmanship
Services Offered
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Residential Windows
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Glass Showers
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Custom Windows
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Aluminum Window Frames
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Full-Service Installations
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Business Windows
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Sliding Glass
Pane Free Glass
Manchester, NH-
No-Hassle Pricing
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Good Customer Service
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No-fee Quotes
Services Offered
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Residential Windows
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Glass Showers
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Custom Windows
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Full-Service Installations
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Business Windows
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Double-Hung
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Sliding Glass
Blind Gallery New England
Stratham, NH-
Good Customer Service
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Reliable Service
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No-fee Quotes
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Educational Website
Services Offered
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Custom Windows
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Aluminum Window Frames
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Energy-Efficient Options
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Sliding Glass
Alton Bay Blinds of New England
Hampton, NH-
Educational Website
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Award-Winning
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Free Quotes
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Good Customer Service
Services Offered
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Custom Window Designs
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Sliding Glass
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Commercial Windows
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Double-Hung
Concord Lumber & Building Center
Littleton, MA-
Excellent Customer Service
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Free Quotes
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Educational Website
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No-Hassle Pricing
Services Offered
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Custom Window Designs
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Fast Delivery
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Residential Windows
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Business Windows
Atlantic Window Warehouse
Newburyport, MA-
Helps Educate Customers
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No-Hassle Pricing
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Reliable Appointment Windows
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Good Customer Service
Services Offered
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Custom Window Designs
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Residential Windows
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Sliding Glass
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Double-Hung
City Mirror & Glass Co
Lowell, MA-
Price Transparency
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Free Quotes
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Excellent Customer Service
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Educational Website
Services Offered
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Glass Showers
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Residential Windows
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Custom Window Designs
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Commercial Windows
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Sliding Glass
Methuen Glass 2
Methuen, MA-
Free Quotes
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No-Hassle Pricing
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Excellent Customer Service
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Educational Website
Services Offered
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Glass Showers
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Residential Windows
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Custom Windows
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Business Windows
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Sliding Glass
Pella Windows & Doors of Bedford
Bedford, NH-
No-fee Quotes
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Educational Website
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Excellent Customer Service
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No-Hassle Pricing
Services Offered
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Architectural Glass
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Custom Windows
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Business Windows
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Double-Hung
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Sliding Glass
Newell and Crathern
Loudon, NH-
No-fee Quotes
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Helps Educate Customers
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No-Hassle Pricing
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Good Customer Service
Services Offered
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Residential Windows
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Energy-Efficient Options
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Custom Windows
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Commercial Windows
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Double-Hung
Window Choices Inc
Wakefield, MA-
No-Hassle Pricing
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Free Quotes
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Excellent Customer Service
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Educational Website
Services Offered
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Residential Windows
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Energy-Efficient Options
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Commercial Windows
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Double-Hung
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Sliding Glass
How Installing Energy-Efficient Windows in East Merrimack Saves You Money
Energy-efficient windows can benefit you in several ways. Here are some reasons you may want to make the switch:
- Protect your investment: The older your home is, the more likely it is that getting new windows will benefit you. Older homes tend to have windows that are outdated, leaky or maybe even damaged in some way. Updating your windows could help raise the value of your property if you decide to sell.
- Reduce your carbon footprint: By using less energy after you upgrade to Energy Star certified windows, you'll also be lowering your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only insulate your home better, but also filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
- Save on power bills: The Department of Energy estimates that heat gained or lost via windows accounts for about 25-30% of residential energy use. Switching to energy-efficient windows can help lower that amount, which helps you save $463 a year on your bills.
Estimated Cost of Window Replacement in East Merrimack
Each window installation company offers various services and has varying prices depending on several factors.
How Much Do New Windows Cost?
The national average cost to install one window is about $600 but can range from $200 to $1,200. Costs will differ significantly depending on the current condition of your home, the number of windows you need, the quality of your products and your location. Many window companies also offer door installations and other add-ons like shutters, baths, coating and more. These extra services will increase overall project costs.
Bear in mind that energy-efficient windows may cost more upfront, but Energy Star predicts the upgrade will save you between $101 and $583 a year when you install single-pane windows and between $27 and $197 a year when you install double-pane, clear glass windows. These savings vary based on your local climate, energy rates and individual home characteristics.
Getting free quotes from several installers is the best way to figure out which one will work best for your budget.
What Services do Window Installers Offer?
In general, there are two kinds of window replacement services you can get: full-frame and pocket installations.
Full-frame installations entail replacing the complete window, including the frame, trim and sill. You most likely need a full-frame installation when you want a new style or your window has noticeable rot or deterioration. Full-frame installations are more involved and will raise the total cost. A pocket installation means replacing a window without taking out the entire frame, which is usually less expensive than a full-frame installation.
If you're hiring a reputable window installation company, your company can recommend the best type for your project. In East Merrimack, the decision will mostly be based on the efficiency of your home and the age and condition of your existing frames.
Best Overall
Renewal by Andersen
- Award-winning company
- Manufactures products in-house
- Great industry reputation
- More expensive than competition
Best Affordability
Window World
- Great industry reputation
- EnergyStar Partner
- Low prices relative to competitors
- Quality of service will depend on your area
Best for Businesses
Aeroseal Windows
- Many years of experience
- Great industry reputation
- Custom Designs
- Not ideal for residential installations
How We Choose the Best Window Installers in East Merrimack
EcoWatch reviews differ from most reviews because we evaluate these companies through a sustainability lens. We've decided to evaluate the top window installers in East Merrimack primarily based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows have been shown to cut your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
This one is self-explanatory, but we've chosen to highlight window installers that serve East Merrimack so you can find the right window installation company near you.
Work Quality
When choosing new windows, the quality and range of services can often play just as important of a role in overall efficiency and performance as the type of window you choose. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If most customers don't have nice things to say about their experience with a certain window installation company, you won't see it featured on EcoWatch.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers want to keep costs low when possible. When analyzing providers' prices, we awarded higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed previously, windows are a hefty investment, so you'll want to be certain that investment is protected. Window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have been in the industry for quite some time. Window installers that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
East Merrimack, NH Window Replacement FAQs
What is the typical cost to install windows?
The typical cost of replacing one window can range between $450 and $650. There are several factors that influence how much it costs, which include styles and sizes of windows, how energy-efficient the windows are, local labor costs, the number of windows, the materials used in designing the windows and your property's location.
What kind of window is the best for energy efficiency?
Generally, double-pane windows will be more efficient than single-pane windows and windows that don't open are more efficient than windows that do. To be sure you're getting the most energy-efficient windows, look for models that have the blue Energy Star certification — that means they're certified energy-efficient by the U.S. Department of Energy.
Can I install my own windows?
If you're handy and have experience with similar home improvement projects, you may be able to install your own windows. However, if you don't have the time or skills, we recommend hiring a professional.
How long does it usually take to install windows?
Because a window takes about 30 minutes to install, about 16 windows can be installed during an 8-hour work day.
How often do you need to replace windows?
Windows have an average lifespan of about 20 to 30 years. If your windows are older than that, then they probably need to be replaced. Other than that, if your windows have damage anywhere on them, or they have become difficult to open or close, they may be in need of replacement.