7 Best Window Companies in Berlin, NH (2023 Reviews)
If you're looking to upgrade to new windows, our guide to the top window installation companies can help.
We analyzed all the top-rated window companies in Berlin and selected the best 7 based on:
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Customer reviews
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Window installation expertise
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Popularity with home-owners like you
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Updated September 15, 2023
Why you can trust EcoWatch
Whether you're updating for aesthetics or have old windows, windows play a key role in conserving your home's energy. Drafty windows can make your AC or heater work extra hard in the summer or winter.
That's also bad news for the environment because the additional energy used by outdated windows increases your carbon footprint.
Because windows are so important for your home, selecting the best company for you is a big choice to make. That's why the EcoWatch team has put together this list of the top window installation companies, so you can make an informed decision more easily.
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 Berlin
The EcoWatch Reviews team evaluated dozens of window providers across Berlin to narrow our list down to the top ones. The companies in this article scored best in our review categories, which include energy-efficient offerings, customer service, availability, local expertise, price and more.

Window World
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EnergyStar Partner
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Lifetime warranty
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Quality of service will depend on your area
Window World is 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. The company has a lot of glowing reviews from customers online.
Window World may be the company for you if you're looking for 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 has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want Energy Star windows when inquiring. 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 Berlin?Prices aren’t mentioned on Window World’s 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 pricing.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Member of US Green Building Council
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Manufactures products in-house
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No lifetime warranty
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More expensive than competition
Renewal by Andersen has the best availability in Berlin. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the industry, and it currently serves nearly every state except Mississippi and West Virginia.
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 company 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 make sure you mention that you want 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 Berlin?Andersen doesn’t have any pricing 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 ask for a free quote on its website for more information about pricing.

Aeroseal Windows
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Many years of experience
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Great industry reputation
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Low number of customer complaints
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Manufactures products in-house
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Custom Designs
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No lifetime warranty
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Not ideal for residential installations
Aeroseal Windows is 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. Its reputation is backed by hundreds of positive reviews on customer review websites.
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 WindowsThe 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. Not all of Aeroseal’s windows are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.
How much does Aeroseal Windows cost in Berlin?Pricing details are not available on Aeroseal’s website, as the cost of window installment differs based on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. Requesting 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 is 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. The company has a lot of glowing reviews from customers online.
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 has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you 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 Berlin?Prices aren’t mentioned on Universal’s 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 pricing.
We try to be unbiased and transparent by describing pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.
More Window Companies in Berlin
Top Notch Custom Glass
Littleton, NH-
Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Tempered Glass
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Custom Window Designs
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Window Replacement
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Aluminum Window Frames
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Glass Showers
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Commercial Windows
Portland Glass of North Conway
North Conway, NH-
Price Transparency
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Good Customer Service
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Educational Website
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Free assessment
Services Offered
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Custom Window Designs
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Residential Windows
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Window Replacement
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Commercial Windows
Granite State Glass
Conway, NH-
Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Window Replacement
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Commercial Windows
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Residential Windows
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Fast Delivery
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Glass Showers
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Custom Window Designs
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Aluminum Window Frames
Portland Glass of South Paris
South Paris, ME-
Free assessment
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Educational Website
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Price Transparency
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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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Window Replacement
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Commercial Windows
Pella Windows & Doors of Meredith
Meredith, NH-
Price Transparency
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Good Customer Service
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Free assessment
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Educational Website
Services Offered
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Window Replacement
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Double-Hung
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Bay Windows
Granite State Glass
Plymouth, NH-
Price Transparency
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Educational Website
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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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Window Replacement
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Commercial Windows
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Residential Windows
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Aluminum Window Frames
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Fast Delivery
Granite State Glass
Wolfeboro, NH-
Price Transparency
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Educational Website
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Good Customer Service
Services Offered
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Residential Windows
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Fast Delivery
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Commercial Windows
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Window Replacement
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Glass Showers
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Custom Window Designs
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Aluminum Window Frames
Calculate how much you can expect to pay for window installation and replacement in Berlin, 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 Berlin Saves You Money
There are quite a few benefits of switching to energy-efficient windows. A few reasons you may want to consider making the switch are the following:
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only provide better insulation for your home, but also filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
- Reduce your carbon footprint: Since energy-efficient windows improve the insulation in your house, you can reduce your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its value, especially if your home is on the older side.
- Save money on power bills: Since energy-efficient windows reduce the amount of energy needed to heat or cool your home, the switch can help you save about $599 annually on your energy bills in Berlin.
Estimated Cost of Window Replacement in Berlin
When looking into window installation, each company provides varying services and costs. Let's take a look at some typical costs and services.
How Much Do New Windows Cost?
The average cost to install one window is about $600 but can range anywhere from $200 to $1,200. These figures vary based on the specifics of your installation, including number of windows, material, the location of your home, size, type and more.
It's also worth noting that energy-efficient windows will usually cost more initially, but Energy Star predicts that upgrading the windows on your Berlin home translates to an average energy savings of $236 to $319 a year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. How much you'll save by installing energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.
Something else that affects the overall cost is the material of the frame you select. Aluminum frames are usually the least pricey and are sturdy and light, but they provide poor insulation. On the other hand, wood frames cost the most because they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.
What Services do Window Installers Offer?
Generally, there are two types of window replacement services companies offer: full-frame and pocket installations.
A full-frame installation replaces the full window, including the sill, frame, trim and the window panes. Because this type of installation requires more time, it will cost more than a pocket installation. Pocket installations (or retrofits) entail replacing a window within its existing frame, which makes pocket installations more simple and affordable. However, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.
If you're not sure which window installation service you should get, your installer can assist you. Typically, the decision depends on factors such as the age and condition of the home, the type of building material, budget and time restrictions.
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 Berlin
EcoWatch reviews are different from other reviews because we examine these companies through a sustainability lens. We've assessed the best window replacement companies in Berlin primarily based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows can lower electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
This one is self-explanatory, but we've chosen to highlight window installers that serve Berlin so you can find the right window installation company near you.
Work Quality
We're willing to bet that you're looking for professionals who do a great job installing windows. We've vetted each company in our guide to make sure its technicians are well-qualified and that the company has received plenty of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed trends in recent online reviews to find the companies with the most consistent customer satisfaction. Customer satisfaction may be the most important factor, as it indicates the quality of services across most other categories, including warranty, quality of parts, professionalism, cost, quality of installation and more.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers would like to keep costs low when possible. When analyzing the prices of providers, we awarded higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed previously, windows are a substantial investment, so you'll want to make sure that investment is protected. Window installation companies with 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 a good track record in the industry. Window installation companies that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Berlin, NH Window Replacement FAQs
How much should a window install cost?
The average cost of installing a single window ranges between $450 and $650. There are a variety of factors that influence how much it costs, such as how energy-efficient the windows are, the materials used in designing the windows, the number of windows, your property's location, styles and sizes of windows and local labor costs.
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 will be more efficient than windows that do. To be sure you'll have the most energy-efficient windows, look for models that have the blue Energy Star certification attached to them — this means they're certified energy-efficient by the U.S. Department of Energy.
What do window installation companies do?
Window installers go to your home to remove your old windows and replace them with new ones. Some companies install products made by other companies, whereas others install their own windows. The installer will also clean up after the installation is finished.
How often should you 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 any damage on them, or they have become difficult to operate, they may be in need of replacement.
Should I replace my windows all at once?
If your windows are more than 20 years old, you most likely need to replace all of them. By that point, they are often less efficient, leakier and/or more damaged than new windows. Replacing your windows all at once will involve less paperwork and less stress.