29 Best Window Replacement Companies in New London, NH (2023 Reviews)
Window Companies Near Me
Looking to upgrade your windows? We've got all the information you need in this list of the best window installation companies.
We analyzed all the top window installers in New London and selected the top 29 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 May 04, 2023
Why you can trust EcoWatch
Whether you're doing home renovations or have old windows, windows play a important role in conserving your home's energy. Drafty, leaky windows could lead to spending more on power bills during the winter or summer months.
Thankfully, helping you save money with more efficient windows also helps our goals of reducing energy usage for the environment.
Unlike other sites, EcoWatch ranks window replacement companies based on energy efficiency while also considering cost, customer satisfaction and service area.
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Manufactures products in-house
- Award-winning company
- No lifetime warranty
Best Affordability
Window World
- EnergyStar Partner
- Low prices relative to competitors
- Lifetime warranty
- Quality of service will depend on your area
Best Warranty
Universal Windows Direct
- Makes charitable contributions
- Lifetime warranty
- Manufactures products in-house
- Quality of service will depend on your area
Best Window Replacement Companies in New London
The EcoWatch team researched dozens of installers across the country to find the top window replacement companies for our readers. The providers in this article scored the best in our review categories, such as energy-efficient offerings, availability, price, local expertise, customer service and more.

Renewal by Andersen
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Member of US Green Building Council
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Manufactures products in-house
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Award-winning company
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No lifetime warranty
Renewal by Andersen provides the best availability in New London. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window business for around 27 years. Many positive reviews from customers online back the company's reputation.
It 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 appeals to eco-conscious consumers by providing 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 New London?Though pricing information is not available on Andersen's website, 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 to know for sure, you can ask for a quote on the company's website.

Window World
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EnergyStar Partner
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Low prices relative to competitors
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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 window installation company has been in business since 1995 and currently serves 200 locations nationwide.
You may want to consider opting for Window World if you're interested in a company 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 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 New London?Window World doesn't have any prices available on its website, but it's known for offering some of the most affordable window installations around. You can request a free quote on its website for more information about the cost.

Universal Windows Direct
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Makes charitable contributions
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Lifetime warranty
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Manufactures products in-house
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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 20 years of experience in the windows industry, and it has proved to be one of the most reputable companies in New London. Hundreds of positive reviews from customers online back the company'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 WindowsThe 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. Not all of Universal's windows are Energy Star certified, so make sure you mention that you'd like Energy Star windows when inquiring.
How much does Universal Windows Direct cost in New London?Prices aren't displayed 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. The best way to know for sure is to request a free 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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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 provides the best window installation for businesses in New London. 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 operating since 1999 and currently serves 13 states and Washington D.C. Many positive reviews on customer review websites back the company's reputation.
It installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows is an Energy Star partner offering a variety of energy-efficient windows. Note that not all of the company's windows are Energy Star certified, so be sure to ask your Aeroseal representative when inquiring about services.
How much does Aeroseal Windows cost in New London?Aeroseal does not mention prices on its website, but it provides high-quality windows at a competitive price point. The best way to get more accurate pricing information is to get a free quote from the company.
We've recommended companies with good reputations, but keep in mind some national companies have independently owned locations in New London, so the quality of service may depend on your local crew. We have tried to be unbiased and transparent by describing pros and cons for every company we reviewed.
More Window Replacement Companies in New London
Nashua Glass
Nashua, NH-
Price Transparency
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Free assessment
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Award-Winning
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Good Customer Service
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Educational Website
Services Offered
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Custom Window Designs
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Tempered Glass
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Double-Hung
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Commercial Windows
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Glass Showers
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Fast Delivery
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Sliding Glass
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Residential Windows
Clear Choice Home Improvements
Manchester, NH-
Free assessment
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Good Customer Service
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Timely Service
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Price Transparency
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Award-Winning
Services Offered
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Sliding Glass
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Fast Delivery
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Glass Showers
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Double-Hung
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Residential Windows
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Bay Windows
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Commercial Windows
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Custom Window Designs
Marquis Roofing
Manchester, NH-
Award-Winning
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Good Customer Service
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Timely Service
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Educational Website
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Free assessment
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Price Transparency
Services Offered
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Residential Windows
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Custom Window Designs
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Double-Hung
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Fast Delivery
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Commercial Windows
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Stained Glass
Window World of New Hampshire
Manchester, NH-
Free assessment
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Price Transparency
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Award-Winning
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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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Sliding Glass
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Custom Window Designs
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Fast Delivery
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Bay Windows
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Double-Hung
M&M Skylights
Brentwood, NH-
Free assessment
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Price Transparency
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Good Customer Service
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Timely Service
Services Offered
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Double-Hung
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Energy-Efficient Options
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Glass Showers
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Fast Delivery
Mr. Handyman of Lowell, Andover and Haverhill
Tyngsborough, MA-
Educational Website
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Price Transparency
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Free assessment
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Timely Service
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Good Customer Service
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Award-Winning
Services Offered
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Glass Showers
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Double-Hung
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Commercial Windows
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Residential Windows
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Custom Window Designs
Red Dog's Roofing LLC
Fitchburg, MA-
Free assessment
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Educational Website
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Good Customer Service
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Price Transparency
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Award-Winning
Services Offered
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Stained Glass
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Commercial Windows
Dependable J M R Siding
Manchester, NH-
Price Transparency
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Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Double-Hung
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Residential Windows
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Commercial Windows
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Custom Window Designs
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Fast Delivery
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Sliding Glass
Portland Glass of Hooksett/Manchester
Hooksett, NH-
Price Transparency
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Timely Service
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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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Glass Showers
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Commercial Windows
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Custom Window Designs
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Residential Windows
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Double-Hung
Portland Glass of Springvale & Sanford
Springvale, ME-
Price Transparency
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Educational Website
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Good Customer Service
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Free assessment
Services Offered
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Commercial Windows
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Fast Delivery
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Double-Hung
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Custom Window Designs
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Glass Showers
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Residential Windows
Minuteman Floors
Manchester, NH-
Free assessment
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Timely Service
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Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Custom Window Designs
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Sliding Glass
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Residential Windows
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Glass Showers
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Commercial Windows
Home Services at The Home Depot
Somersworth, NH-
Educational Website
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Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Commercial Windows
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Bay Windows
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Aluminum Window Frames
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Glass Showers
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Custom Window Designs
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Residential Windows
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Stained Glass
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Fast Delivery
Home Services at The Home Depot
Tilton, NH-
Price Transparency
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Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Glass Showers
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Commercial Windows
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Double-Hung
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Fast Delivery
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Stained Glass
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Residential Windows
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Custom Window Designs
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Bay Windows
Universal Windows Direct of Manchester
Manchester, NH-
Price Transparency
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Educational Website
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Award-Winning
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Good Customer Service
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Free assessment
Services Offered
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Residential Windows
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Energy-Efficient Options
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Sliding Glass
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Commercial Windows
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Custom Window Designs
Home Services at The Home Depot
West Lebanon, 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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Double-Hung
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Commercial Windows
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Residential Windows
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Stained Glass
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Glass Showers
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Fast Delivery
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Bay Windows
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Custom Window Designs
Home Services at The Home Depot
Claremont, NH-
Educational Website
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Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Stained Glass
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Glass Showers
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Aluminum Window Frames
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Fast Delivery
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Commercial Windows
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Residential Windows
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Bay Windows
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Custom Window Designs
Pane Free Glass
Manchester, NH-
Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
Services Offered
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Full-Service Installations
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Fast Delivery
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Custom Window Designs
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Sliding Glass
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Residential Windows
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Commercial Windows
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Glass Showers
Corporate Office for Pella of Boston
Haverhill, MA-
Price Transparency
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Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Bay Windows
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Custom Window Designs
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Energy-Efficient Options
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Commercial Windows
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Sliding Glass
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Double-Hung
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Residential Windows
Pro Entry Installs LLC
Salem, NH-
Price Transparency
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Timely Service
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Award-Winning
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Good Customer Service
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Educational Website
Services Offered
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Bay Windows
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Custom Window Designs
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Double-Hung
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Residential Windows
Portland Glass of Nashua
Nashua, NH-
Free assessment
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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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Custom Window Designs
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Glass Showers
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Double-Hung
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Commercial Windows
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Residential Windows
Traynor Glass Co. Inc
Hampstead, NH-
Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Residential Windows
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Sliding Glass
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Glass Showers
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Commercial Windows
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Full-Service Installations
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Custom Window Designs
Portland Glass of Dover
Dover, NH-
Free assessment
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Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Custom Window Designs
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Glass Showers
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Residential Windows
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Double-Hung
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Commercial Windows
Portland Glass of North Conway
North Conway, NH-
Price Transparency
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Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Double-Hung
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Residential Windows
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Custom Window Designs
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Glass Showers
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Commercial Windows
Refined Home Services
Atkinson, NH-
Timely Service
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Price Transparency
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Free assessment
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Good Customer Service
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Educational Website
Services Offered
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Custom Window Designs
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Glass Showers
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Commercial Windows
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Residential Windows
Portland Glass of West Lebanon
West Lebanon, NH-
Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Glass Showers
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Residential Windows
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Commercial Windows
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Custom Window Designs
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Double-Hung
Pella Windows & Doors of Bedford
Bedford, NH-
Educational Website
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Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Sliding Glass
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Bay Windows
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Double-Hung
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Custom Window Designs
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Residential Windows
Portland Glass of Rutland
Rutland, VT-
Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Double-Hung
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Custom Window Designs
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Glass Showers
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Residential Windows
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Commercial Windows
Home Services at The Home Depot
Londonderry, NH-
Free assessment
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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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Aluminum Window Frames
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Fast Delivery
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Custom Window Designs
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Glass Showers
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Commercial Windows
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Bay Windows
Seacoast Replacement Windows
Atkinson, NH-
Free assessment
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Price Transparency
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Educational Website
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Good Customer Service
Services Offered
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Bay Windows
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Custom Window Designs
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Energy-Efficient Options
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Residential Windows
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Double-Hung
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Stained Glass
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Sliding Glass
How Installing Energy-Efficient Windows in New London Saves You Money
There are several perks of upgrading to energy-efficient windows. A few reasons you may want to consider making the switch include the following:
- Protect your valuables: Many energy-efficient 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 electricity bills: The Department of Energy estimates that heat gained or lost through windows accounts for about 25-30% of energy use in your home. Installing energy-efficient windows can help lower that number, which helps you save more on your bills.
- Decrease your carbon footprint: Because 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: When your home is on the older side, your windows could also be outdated or damaged. Keeping your windows up to date is an important part of maintaining your property and its value.
Estimated Cost of Window Replacement in New London
Windows come in varying shapes and sizes, so costs and services will differ greatly. Here are the average costs and the primary services that you'll find from window installation companies.
How Much Do New Windows Cost?
According to our research, the average cost of installing a single window is around $600. However, window installation costs can range from $200 to $1,200 per window. How much it will cost you is based on several factors, such as size, type, material, number of windows, the location of your home and more.
It's important to note that windows with the best efficiency may cost more initially but can save you hundreds of dollars by decreasing your energy bills. Investing in Energy Star certified windows can save New London homeowners $477+ a year when replacing single-pane windows.
We recommend getting free quotes from multiple window installers to find the one that works best for your budget.
What Services do Window Installers Offer?
In general, there are two kinds of window installation services you can get: full-frame and pocket installations.
A full-frame installation is a total window replacement. It involves taking out the old window, the windowsill, and the exterior and interior trim. It can also involve extra materials, such as insulation and drip edges, which raise the overall cost of the project. Also worth noting: it's not uncommon for homeowners to have to touch up the paint surrounding the window after a full-frame installation. Pocket installations (also known as retrofits) are when you replace a window within its existing frame. Pocket installations are on the simpler end and will be less expensive, but you can't do this kind of installment if you have any pre-existing rot or water damage.
If you're still debating which type of installation to get, you can ask your installer and get their recommendation. The decision mostly depends on the age of your window frames and if there's any damage.
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Manufactures products in-house
- Award-winning company
- No lifetime warranty
Best Affordability
Window World
- EnergyStar Partner
- Low prices relative to competitors
- Lifetime warranty
- Quality of service will depend on your area
Best Warranty
Universal Windows Direct
- Makes charitable contributions
- Lifetime warranty
- Manufactures products in-house
- Quality of service will depend on your area
How We Choose the Best Window Installers in New London
EcoWatch reviews are different from most reviews because we examine these companies through a sustainability lens. We have evaluated the top window installation companies in New London mostly based on energy efficiency, as it's what's best for the environment and for you as a homeowner. Energy-efficient windows have been shown to reduce your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
Since this is a guide for New London, we only included companies that cover the city. There are certainly reputable providers that didn't make the cut because of the low odds that they would serve the average homeowner in New London.
Work Quality
When installing new windows, the quality and breadth of services can often play just as important of a role in overall efficiency and performance as the brand of window you get. We do give window installers higher marks if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent online reviews to determine the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction might be the most important factor, as it indicates the quality of services across nearly every category, including quality of parts, warranty, quality of installation, professionalism, cost and more.
Cost
This one is a give-and-take: similar to most services, cheap window installers are not going to provide the most quality service. On the other hand, we want to make sure we're highlighting companies that offer a variety of price and financing options so they're accessible to most homeowners.
Warranty
As discussed previously, windows are a considerable 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
Because of New London's climate, homeowners need to be wary of rot, low efficiency and water damage. We factored in local experience to reflect the ability of New London window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
New London, NH Window Replacement FAQs
How much should a window install cost?
The national average cost to install a window is about $600 but can range from $200 to $1,200, based on several factors. The price is generally influenced by the size of the window, the location of your property and the type and material of the window. Also, remember that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
What are the types of windows?
The most common kinds of windows for homes include: slider windows, double-hung and single-hung windows, awning windows, transom windows, bay windows, casement windows and picture windows.
What do window installers do?
Window installation professionals travel to your property to remove your old windows and replace them with new ones. Some providers install products distributed by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation.
What time of year should I replace my windows?
Replacement windows can be installed during any season, but warmer weather is typically better. Regardless of when you install them, the contractors will take steps to ensure that too much hot or cold air doesn't get into your home, so the temperature outside isn't necessarily a big factor. What's most important is that the weather should be dry.
When is it time to replace your 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 need to be replaced.