20 Best Window Companies in East Merrimack, NH (2023 Reviews)
Thinking about upgrading your home's windows? We've got you covered in this list of the top window installation companies.
We analyzed all the top-rated window companies in East Merrimack and selected the best 20 based on:
-
Customer reviews
-
Window installation expertise
-
Popularity with home-owners like you
Please enter a valid 5-digit zip code!

Updated September 15, 2023
Why you can trust EcoWatch
The EcoWatch team is all about finding solutions for eco-conscious homeowners in East Merrimack. Potential leaks or drafts from your windows can make your AC or heater work extra hard in the summer or winter.
Luckily, saving you money with efficient windows also aligns with our goals of conserving energy and the resources it takes to make it.
Efficient windows are especially important in East Merrimack, where winters are long and cold. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $463 per year.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in East Merrimack
The EcoWatch team evaluated dozens of window installation companies across East Merrimack to narrow our list down to the top ones. We assessed the companies on energy-efficient offerings, local experience, customer service, price, coverage area and more.

Window World
-
EnergyStar Partner
-
Large serice area
-
Low prices relative to competitors
-
Great industry reputation
-
Lifetime warranty
-
Quality of service will depend on your area
Window World provides windows expertise in East Merrimack. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has been operating since 1995 and currently services 200 locations nationwide. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
Window World may be the company for you if you want one that 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 WindowsWindow World’s commitment to sustainability can be seen in its energy-efficient window offerings. 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?Window World doesn’t have any cost information displayed on its website, but it's known for offering some of the most affordable window installations around. You can inquire about a free quote on its website for more information about the cost.

Renewal by Andersen
-
Great industry reputation
-
Award-winning company
-
Member of US Green Building Council
-
Manufactures products in-house
-
No lifetime warranty
-
More expensive than competition
Renewal by Andersen provides the best availability in East Merrimack. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has been operating since 1995 and currently services nearly every state except Mississippi and West Virginia. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
Andersen may be the company for you if you want one that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen’s commitment to sustainability can be seen in its energy-efficient window offerings. 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?Andersen doesn’t have any cost information displayed on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can inquire about a free quote on its website for more information about the cost.

Aeroseal Windows
-
Many years of experience
-
Great industry reputation
-
Low number of customer complaints
-
Manufactures products in-house
-
Custom Designs
-
No lifetime warranty
-
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. This window installation company has been in business since 1999 and currently serves 13 states and Washington D.C.
Aeroseal may be the company for you if you want one that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsThere are a wide range of window types available from Aeroseal Windows, some of which are Energy Star products. 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?Though prices are not available on Aeroseal’s website, it provides high-quality windows at a competitive price point. For more detailed information on pricing, you can inquire about a quote from the company.

Universal Windows Direct
-
Makes charitable contributions
-
Manufactures products in-house
-
Wide variety of products and services
-
Lifetime warranty
-
Limited service area
-
Some installations carried out by third-party contractors
-
Quality of service will depend on your area
Universal Windows Direct provides the best warranty in East Merrimack. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This company has been operating since 2002 and currently services 27 states nationwide. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
Universal may be the company for you if you want one that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct’s commitment to sustainability can be seen in its energy-efficient window offerings. 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 doesn’t have any cost information displayed 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. You can inquire about a free quote on its website for more information about the cost.
We try to stay unbiased and transparent by mentioning pros and cons for every company we review. Additionally, our rankings are not influenced by any partnerships.
More Window Companies in East Merrimack
Renewal by Andersen of Boston
Northborough, MA-
Price Transparency
-
Educational Website
-
Free assessment
-
Good Customer Service
Services Offered
-
Bay Windows
-
Double-Hung
-
Glass Showers
-
Custom Window Designs
-
Sliding Glass
-
Commercial Windows
-
Residential Windows
-
Fast Delivery
-
Stained Glass
-
Window Replacement
Window World of New Hampshire
Manchester, NH-
Good Customer Service
-
Free assessment
-
Educational Website
-
Timely Service
-
Price Transparency
Services Offered
-
Bay Windows
-
Fast Delivery
-
Residential Windows
-
Sliding Glass
-
Window Replacement
-
Double-Hung
-
Custom Window Designs
Universal Windows Direct of Manchester
Manchester, NH-
Price Transparency
-
Free assessment
-
Educational Website
-
Timely Service
-
Good Customer Service
Services Offered
-
Bay Windows
-
Residential Windows
-
Double-Hung
-
Window Replacement
-
Full-Service Installations
-
Sliding Glass
-
Custom Window Designs
-
Commercial Windows
Dependable J M R Siding
Manchester, NH-
Free assessment
-
Educational Website
-
Price Transparency
-
Good Customer Service
Services Offered
-
Residential Windows
-
Commercial Windows
-
Fast Delivery
-
Sliding Glass
-
Custom Window Designs
-
Window Replacement
-
Double-Hung
Pella Windows & Doors of Bedford
Bedford, NH-
Price Transparency
-
Free assessment
-
Good Customer Service
-
Educational Website
Services Offered
-
Double-Hung
-
Bay Windows
-
Residential Windows
-
Custom Window Designs
-
Window Replacement
-
Sliding Glass
Nashua Glass
Nashua, NH-
Free assessment
-
Good Customer Service
-
Price Transparency
Services Offered
-
Double-Hung
-
Glass Showers
-
Fast Delivery
-
Window Replacement
-
Tempered Glass
-
Commercial Windows
-
Custom Window Designs
-
Residential Windows
Fiori Construction LLC
Londonderry, NH-
Price Transparency
-
Free assessment
-
Educational Website
-
Good Customer Service
Services Offered
-
Residential Windows
-
Window Replacement
-
Commercial Windows
-
Custom Window Designs
Granite State Glass
Manchester, NH-
Educational Website
-
Good Customer Service
-
Price Transparency
Services Offered
-
Commercial Windows
-
Fast Delivery
-
Window Replacement
-
Residential Windows
-
Aluminum Window Frames
-
Custom Window Designs
-
Glass Showers
Clear Choice Home Improvements
Manchester, NH-
Price Transparency
-
Timely Service
-
Free assessment
-
Good Customer Service
Services Offered
-
Window Replacement
-
Double-Hung
-
Fast Delivery
-
Glass Showers
-
Bay Windows
-
Sliding Glass
-
Custom Window Designs
-
Residential Windows
-
Commercial Windows
PIC Home Pros
Londonderry, NH-
Educational Website
-
Free assessment
-
Good Customer Service
-
Price Transparency
Services Offered
-
Custom Window Designs
-
Residential Windows
-
Window Replacement
-
Glass Showers
-
Fast Delivery
Rejean's Custom Quality Siding LLC
Manchester, NH-
Price Transparency
-
Good Customer Service
-
Free assessment
Services Offered
-
Commercial Windows
-
Custom Window Designs
-
Window Replacement
-
Residential Windows
S R Windows & Doors Plus Inc
Amherst, NH-
Price Transparency
-
Good Customer Service
Services Offered
-
Sliding Glass
-
Residential Windows
-
Custom Window Designs
-
Window Replacement
-
Commercial Windows
Queen City Glass & Mirror
Manchester, NH-
Good Customer Service
-
Price Transparency
Services Offered
-
Window Replacement
-
Aluminum Window Frames
-
Glass Showers
-
Commercial Windows
-
Full-Service Installations
-
Residential Windows
-
Sliding Glass
-
Custom Window Designs
Morgan Exteriors
Hooksett, NH-
Good Customer Service
-
Educational Website
-
Free assessment
Services Offered
-
Double-Hung
-
Sliding Glass
-
Bay Windows
-
Custom Window Designs
-
Residential Windows
-
Window Replacement
C. Gosselin Siding & Windows
Manchester, NH-
Price Transparency
Services Offered
-
Sliding Glass
-
Window Repair
-
Window Replacement
-
Fast Delivery
-
Residential Windows
-
Custom Window Designs
A Plus Energy Services
Milford, NH-
Educational Website
-
Free assessment
-
Price Transparency
Services Offered
-
Commercial Windows
-
Custom Window Designs
-
Window Replacement
-
Residential Windows
DaBella
Salem, NH-
Price Transparency
-
Educational Website
-
Good Customer Service
-
Free assessment
Services Offered
-
Residential Windows
-
Bay Windows
-
Commercial Windows
-
Glass Showers
-
Double-Hung
-
Window Replacement
-
Custom Window Designs
Manny's Roofing
Pelham, NH-
Educational Website
-
Good Customer Service
-
Price Transparency
-
Free assessment
-
Timely Service
Services Offered
-
Residential Windows
-
Custom Window Designs
-
Window Replacement
-
Commercial Windows
Quantum Remodeling LLC
New Boston, NH-
Educational Website
-
Free assessment
-
Price Transparency
-
Good Customer Service
Services Offered
-
Custom Window Designs
-
Aluminum Window Frames
-
Glass Showers
-
Full-Service Installations
-
Residential Windows
-
Window Replacement
-
Fast Delivery
Dracut Window & Door
Dracut, MA-
Price Transparency
-
Free assessment
-
Educational Website
Services Offered
-
Custom Window Designs
-
Window Replacement
-
Energy-Efficient Options
-
Residential Windows
Calculate how much you can expect to pay for window installation and replacement in East Merrimack, NH using our customized window cost calculator.
Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.
How Installing Energy-Efficient Windows in East Merrimack Saves You Money
Upgrading to energy-efficient windows can improve the comfort of your home and help you save on electricity bills. Here are more ways switching out your windows could help you:
- Protect your valuables from fading: When you switch to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will be protected from fading because of their ability to filter out harmful UV rays.
- Save on power bills: The Department of Energy estimates that heat gained or lost through windows makes up about 25-30% of household energy use. Installing energy-efficient windows can help lower that amount, which helps you save some money on your bills.
- Protect your investment: When your home is on the older side, your windows could also be outdated or drafty. Keeping your windows up to date is an important part of maintaining your property and its real estate value.
- More efficient energy use in your home: Because the winters can get cold in East Merrimack, homeowners usually depend on their heater a lot. Energy-efficient windows reduce the amount of heat that is lost through your windows, making it easier to keep your house warm.
Estimated Cost of Window Replacement in East Merrimack
Each window replacement company offers varying services and has different costs based on a few factors.
How Much Do New Windows Cost?
Though the typical to replace a single window is about $600, it can range anywhere from $200 to $1,200. Costs will differ significantly depending on the quality of your products, the number of windows you need, the current condition of your home and your location. A lot of window companies also offer door installations and other add-ons like shutters, coating, baths and more. Additional services will increase your overall project costs.
It's also worth noting that energy-efficient windows will almost always cost more initially, but Energy Star estimates that upgrading the windows on your East Merrimack home can mean an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. How much you'll save by upgrading to energy-efficient windows depends on your local climate, energy rates and other factors unique to your home.
We advise getting free quotes from multiple window installation companies to find the one that works best for you.
What Services do Window Installers Offer?
There are typically two kinds of window installation services: full-frame and pocket installations.
Full-frame installations involve replacing the whole window — the sill, frame, trim and all. These are most common when you want to change the style of your window or when it has significant deterioration. Full-frame installations require more time and labor and will increase overall costs. Pocket installations (or retrofits) entail installing a new window within the existing frame, which makes pocket installations take less time and therefore cost less. However, if the frame has any damage or rot, you should opt for a full-frame installation instead.
If you're still debating which type of installation to get, you can ask your installer and get their recommendation. The choice mostly is influenced by how old the frames are and if there's any damage present.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
How We Choose the Best Window Installers in East Merrimack
In our search to find the most reliable, eco-friendly window installers in East Merrimack, EcoWatch examined many companies before deciding on these. Along with energy efficiency, we analyzed window companies all across the state and ranked them using the following methodology:
Service Area
This one is self-explanatory, but we've chosen to highlight window installation companies that serve the East Merrimack area so you can find the right window installation company near you.
Work Quality
We're willing to bet that you're looking for a company to do a great job installing windows. We've vetted each installer included in our guide to ensure its technicians are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don't have nice feedback about their service from 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 try to keep costs as low as possible. When analyzing providers' prices, we gave higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed previously, windows are a significant investment, so you'll want to make sure that investment is well protected. Window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have a good track record in the industry. Window installers that have more 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 average cost to install new windows?
The average cost of installing a window ranges between $450 and $650. There are several factors that affect the cost, including local labor costs, the materials used in designing the windows, the number of windows, how energy-efficient the windows are, styles and sizes of windows and your property's location.
What are the types of windows?
There are several different kinds of windows you can get for your home, such as awning windows, double-hung and single-hung windows, transom windows, casement windows, picture windows, bay windows and slider windows.
What do window installation companies do?
Window installation professionals go to your house to remove your old windows and replace them with new ones. Some providers install products distributed by other companies, whereas others install their own windows. The installer will also clean up after the installation.
Should I replace all my windows at once?
If you're upgrading your windows to save on your energy bills, replacing all of your windows together is the only way to gain that benefit. However, if you have only one or two windows that are broken or leaky, you can replace just those.