20 Best Window Companies in Londonderry, NH (2025 Reviews)
When it’s time to replace your windows, our guide to the best window installation companies can help you find the provider for you.
We analyzed all the top-rated window companies in Londonderry and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
The EcoWatch Reviews team is all about helping Londonderry homeowners make their homes more eco-friendly. The Department of Energy estimates that heat gained or lost through traditional or outdated windows could be responsible for about 30% of heating and cooling use. In Londonderry, where the electricity bills are an average of $35 per month, that’s almost $$124 per year wasted.
That’s bad for both your wallet and the environment, but one of the top window installation companies can help with that.
Unlike other sites, EcoWatch ranks window replacement companies on energy efficiency while also taking into consideration cost, customer satisfaction and service area.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in Londonderry
The EcoWatch Reviews team researched many window providers across Londonderry to narrow our list down to the top ones. The installers in this article passed our review standards for energy-efficient offerings as well as customer service, local expertise, price and beyond.

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 is the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has about 27 years of experience in the window installation sector.
It has established itself as 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 range 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 Londonderry?Prices aren’t displayed on Window World’s website, but it's known for offering some of the most affordable window installations around. If you’d like more accurate information, you can request a quote on the company’s website.

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 is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the window installation sector.
It has established itself as a company 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 WindowsThere are a wide range of window types available from Renewal by Andersen, some of which are Energy Star products. 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 Londonderry?Prices aren’t displayed on Andersen’s website, but 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 information, you can request a quote on the company’s website.

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 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. Aeroseal has about 23 years of experience in the window installation sector.
It has established itself as a company 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 Londonderry?Prices aren’t displayed on Aeroseal’s website, but it provides high-quality windows at a competitive price point. If you’d like more accurate information, you can request a quote on the company’s website.
We have tried to stay unbiased and transparent by mentioning pros and cons for each company. Additionally, any partnerships do not influence our rankings.
More Window Companies in Londonderry
Renewal by Andersen of Boston
Northborough, MAFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Bay Windows
Double-Hung
Glass Doors
Skylights
Power Home Remodeling
Marlborough, MAGood Customer Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
DaBella
Salem, NHGood Customer Service
Timely Service
Services Offered
Window Replacement/Installation
Vinyl Frames
Glass Doors
Double-Hung
Window Nation
Norwood, MAEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Custom Window Designs
Bay Windows
Energy-Efficient Options
Vinyl Frames
Window Replacement/Installation
Glass Doors
Double-Hung
Affordable Vinyl Windows & Siding Inc
Auburn, NHGood Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Vinyl Frames
Pro Entry Installs LLC
Salem, NHEducational Website
Good Customer Service
Price Transparency
Timely Service
Services Offered
Window Replacement/Installation
Glass Doors
Bay Windows
Double-Hung
Manny's Roofing
Pelham, NHGood Customer Service
Price Transparency
Educational Website
Timely Service
Free assessment
Services Offered
Roof Windows
Window Replacement/Installation
Skylights
Geno the Handyman
Stoneham, MATimely Service
Free assessment
Services Offered
Window Replacement/Installation
Window Repair
Energy-Efficient Options
First Choice Construction, LLC
Beverly, MAPrice Transparency
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Great Bay Roofing & Exteriors
Rochester, NHGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Skylights
Window Replacement/Installation
Bay Windows
Mighty Dog Roofing Metro West Boston
Needham, MAFree assessment
Price Transparency
Good Customer Service
Timely Service
Services Offered
Window Replacement/Installation
Skylights
Window Repair
Rogers Insulation Specialists
Framingham, MAFree assessment
Timely Service
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Triple Pane Glass
Energy-Efficient Options
H & J Homes Solutions LLC
Shrewsbury, MAPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Lighthouse Contracting Group, LLC
Gilford, NHPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Window Replacement/Installation
Closet & Storage Systems
Auburn, MAEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Glass Showers
Mirrors
Window Replacement/Installation
Dependable J M R Siding
Manchester, NHFree assessment
Services Offered
Energy-Efficient Options
Vinyl Frames
Window Replacement/Installation
Dracut Window & Door
Dracut, MAFree assessment
Price Transparency
Educational Website
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Glass Routes Co
Madbury, NHGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Custom Glass
Vinyl Frames
Window Replacement/Installation
Mirrors
Glass Showers
Dover Roofing LLC
Dover, NHGood Customer Service
Free assessment
Educational Website
Price Transparency
Services Offered
Skylights
Window Replacement/Installation
Country Glass
Hudson, MAPrice Transparency
Free assessment
Services Offered
Glass Showers
Mirrors
Custom Glass
Energy-Efficient Options
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Londonderry, 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 Londonderry Saves You Money
By upgrading to energy-efficient windows, you and your family can benefit in several ways, including:
- 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.
- Reduce your carbon footprint: Reducing the amount of energy you use also lowers your carbon emissions. You could reduce it by about 152 pounds.
- Protect your valuables: The low-emissivity coatings on many energy-efficient windows help reduce damage from the sun's UV rays to your floors, carpets and furniture.
- Save on energy bills: Because energy-efficient windows decrease how much energy you need to heat or cool your home, they can help you save around $435 annually on your energy bills in Londonderry.
Estimated Cost of Window Replacement in Londonderry
Let’s go over the cost of installing new windows and the kinds of services you may need for your home.
How Much Do New Windows Cost?
Although the typical cost to replace one window is around $600, it can range from $200 to $1,200. Costs will differ significantly based on your location, the quality of your products, the current condition of your home and the number of windows you need. Many window companies also offer door installations and other add-ons like shutters, coating, baths and more. These extra services will increase your overall project costs.
Whether or not you choose energy-efficient windows is another factor that will influence the cost. These will almost always cost more than other windows, but on the other hand, you can save about $435 a year on your energy bills in Londonderry.
Costs will also vary based on the material you choose for your window frames. Aluminum frames have the lowest price. They’re sturdy, light and maintenance-free, but offer poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made with wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They’re also aesthetically pleasing and provide decent insulation for your home.
What Services do Window Installers Offer?
The first thing to ask yourself when planning a window installation is: Should you get a full-frame installation or a pocket installation?
A full-frame installation replaces the complete window, including the sill, frame, trim and the window panes. Because this type of installation is more involved, it will be more expensive than a pocket installation. Pocket installations are on the simpler end and won’t cost as much, as they entail merely replacing the window within its existing frame. But if the frame has any damage or rot, you may need a full-frame installation instead.
Your window replacement company should be able to help you decide what’s best for your needs. In Londonderry, the decision will mostly be based on how old your home is and if there’s any moisture damage. Wood can decay if not properly maintained over the years, so it’s good to have a professional check your frames and window sills.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
How We Choose the Best Window Installers in Londonderry
EcoWatch differs from other reviewers, as we look at these companies through a sustainability lens. We have reviewed the best window installers in Londonderry mostly based on their energy efficient offerings, as it’s the most sustainable option and the best one for homeowners. Energy-efficient windows have been shown to lower energy 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 installation companies that serve Londonderry so you can find the right window installation company near you.
Work Quality
We’re willing to bet that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each installer included on this list to ensure its contractors are well-qualified and that the company has received a lot of positive customer feedback to vouch for its service.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If most customers don’t have nice feedback about their service from a certain company, you won’t see it featured on EcoWatch.
Cost
This one is a give-and-take: as with other services, cheap window installation companies may not provide the most quality service. Still, we want to ensure we’re highlighting companies that provide a spectrum of price and financing options so they’re accessible to most homeowners.
Warranty
As discussed previously, windows are a hefty investment, so you’ll want to make sure that investment is well protected. Window installation companies with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to Londonderry’s climate, homeowners need to be wary of water damage, rot and low efficiency. We factored in local experience to reflect the ability of Londonderry window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Londonderry, NH Window Replacement FAQs
How much does a window install cost?
The typical cost of replacing one window can range from $450 to $650. There are many factors that influence the price, such as local labor costs, styles and sizes of windows, the number of windows, your property’s location, the materials used in designing the windows and how energy-efficient the windows are.
Which type of window is the best?
Generally, double-pane windows are more efficient than single-pane windows and windows that do not open are more efficient than windows that do. If you want to be sure you’ll have the most energy-efficient windows, look for models with the blue Energy Star certification attached to them — that means they’re certified energy-efficient by the U.S. Department of Energy.
Can you install your own windows?
If you’re handy and know how to replace a window, you may be able to install your own windows. However, if you don’t have the time or experience, we recommend hiring a professional.
What time of year should I replace my windows?
Though you can install windows any time of year, warmer weather is often better for installing replacement windows. Additionally, it shouldn’t be raining, as rain can make the installation more difficult.
How long does window installation take?
Since a window takes about 30 minutes to install, around 16 windows can be installed during an 8-hour work day.