20 Best Window Companies in Amherst, NH (2025 Reviews)
If you’re looking to get new windows, our guide to the best window installation companies can help.
We analyzed all the top-rated window companies in Amherst 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!
Why you can trust EcoWatch
Although eco-friendly energy sources like wind and solar are important when it comes to reducing your carbon footprint, improving your home’s efficiency can also have a large impact on home energy conservation. If you have outdated, drafty windows, your AC or heating system could be working overtime to heat or cool your home. This means higher energy bills.
Replacement windows improve your home’s insulation, not only making you more comfortable during extreme temperatures, but also saving you money and helping the environment.
So if you’re building a new home, renovating or updating your windows in Amherst, this is the best place to get started.
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 Amherst
The EcoWatch Reviews team examined several installers in Amherst to find the top ones for our readers. We assessed the installers based on energy-efficient offerings, customer service, price, local experience, 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 has windows expertise in Amherst. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has around 27 years of experience in the window replacement sector.
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 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 Amherst?While prices are not readily available on Window World’s website, it's known for offering some of the most affordable window installations around. For more detailed information on pricing, you can receive a quote from the company.

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 has the best availability in Amherst. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of experience in the window replacement sector.
Andersen may be the company for you if you're looking for 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 WindowsThere are a wide variety 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 Amherst?While prices are not readily 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. For more detailed information on pricing, you can receive a quote from the company.

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 has the best window installation for businesses in Amherst. It's an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. Aeroseal has around 23 years of experience in the window replacement sector.
Aeroseal may be the company for you if you're looking for one that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsThere are a wide variety 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 Amherst?While prices are not readily available on Aeroseal’s website, it provides high-quality windows at a competitive price point. For more detailed information on pricing, you can receive a quote from the company.
We aim to stay unbiased and transparent by listing pros and cons for each company we review. Additionally, our rankings are not affected by any partnerships.
More Window Companies in Amherst
Renewal by Andersen of Boston
Northborough, MAEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Double-Hung
Skylights
Bay Windows
Glass Doors
Window Replacement/Installation
Power Home Remodeling
Marlborough, MAGood Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
DaBella
Salem, NHTimely Service
Good Customer Service
Services Offered
Window Replacement/Installation
Double-Hung
Glass Doors
Vinyl Frames
Window Nation
Norwood, MAEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Energy-Efficient Options
Double-Hung
Glass Doors
Vinyl Frames
Bay Windows
Window Replacement/Installation
Custom Window Designs
Affordable Vinyl Windows & Siding Inc
Auburn, NHGood Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Vinyl Frames
Pro Entry Installs LLC
Salem, NHGood Customer Service
Educational Website
Timely Service
Price Transparency
Services Offered
Glass Doors
Double-Hung
Window Replacement/Installation
Bay Windows
Manny's Roofing
Pelham, NHEducational Website
Free assessment
Good Customer Service
Price Transparency
Timely Service
Services Offered
Window Replacement/Installation
Skylights
Roof Windows
Geno the Handyman
Stoneham, MATimely Service
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Repair
H & J Homes Solutions LLC
Shrewsbury, MAEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
First Choice Construction, LLC
Beverly, MAGood Customer Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Rogers Insulation Specialists
Framingham, MAFree assessment
Timely Service
Good Customer Service
Price Transparency
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Triple Pane Glass
Great Bay Roofing & Exteriors
Rochester, NHFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Bay Windows
Skylights
Window Replacement/Installation
Mighty Dog Roofing Metro West Boston
Needham, MAGood Customer Service
Free assessment
Price Transparency
Timely Service
Services Offered
Window Repair
Skylights
Window Replacement/Installation
Closet & Storage Systems
Auburn, MAEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Mirrors
Glass Showers
Lighthouse Contracting Group, LLC
Gilford, NHPrice Transparency
Educational Website
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Dependable J M R Siding
Manchester, NHFree assessment
Services Offered
Vinyl Frames
Window Replacement/Installation
Energy-Efficient Options
Dracut Window & Door
Dracut, MAFree assessment
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Country Glass
Hudson, MAFree assessment
Price Transparency
Services Offered
Energy-Efficient Options
Mirrors
Custom Glass
Glass Showers
Window Replacement/Installation
Cheshire Glass Company
Keene, NHFree assessment
Educational Website
Price Transparency
Services Offered
Window Replacement/Installation
Custom Glass
Window Repair
Glass Showers
Glass Doors
Glass Routes Co
Madbury, NHPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Custom Glass
Glass Showers
Vinyl Frames
Window Replacement/Installation
Mirrors
Calculate how much you can expect to pay for window installation and replacement in Amherst, 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 Amherst Saves You Money
When you switch to energy-efficient windows, you may see a few benefits, such as:
- Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.
- Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes usually have windows that are outdated, drafty or maybe even damaged in some way. Upgrading your windows could help raise the value of your home if you decide to sell.
- Save on electricity bills: According to the Department of Energy, heat gained or lost through windows makes up around 25-30% of residential energy use. Switching to energy-efficient models can help decrease how much you have to pay, therefore saving you about 12% more on your bills.
- Decrease your carbon footprint: By using less energy after upgrading to energy-efficient windows, you’ll also be reducing your carbon dioxide emissions by about 12%, according to Energy Star.
Estimated Cost of Window Replacement in Amherst
Each window installation company provides various services and has different price points depending on a few factors.
How Much Do New Windows Cost?
Typically, homeowners in Amherst can anticipate that most window installations will cost between $250 and $1,200, with the most common installations sitting at around $600. How much it will cost varies based on several factors, like number of windows, type, material, size, the location of your home and more.
With windows, efficiency is one of the most important factors for most homeowners. High efficiency windows may cost more off the bat, but by increasing the efficiency of your home — especially during the winter — they can provide many years of energy savings. According to Energy Star, buying certified energy-efficient windows can save Amherst homeowners $463+ each year after replacing single-pane windows.
We recommend requesting free quotes from multiple window installation companies to find the one that works best for your budget.
What Services do Window Installers Offer?
The first step when planning a replacement is to clarify whether you need a full-frame or pocket installation.
Full-frame installations entail replacing the total window, including the frame, trim and sill. You most likely need a full-frame installation when you want a new style or your window has significant deterioration. Because these installations are more involved, they will raise the overall cost. Pocket installations are on the simpler end and won’t carry as large a bill because they involve simply replacing the window within its existing frame. But if the frame has any damage, you should opt for a full-frame installation instead.
Your window installation company will be able to recommend the best type for your project. In Amherst, the decision will mostly depend on the efficiency of your home and how old your existing frames are.
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 Amherst
In our hunt to make your home improvements easier and more eco-friendly in Amherst, the EcoWatch Reviews team examined dozens of companies before deciding on these. Along with energy efficiency, we assessed each installer and ranked them using the following methodology:
Service Area
This one is self-explanatory, but we’ve chosen to highlight window installers that serve the Amherst area so you can find the best window installation company near you.
Work Quality
We’re certain that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each installer on this list to make sure its contractors are well-qualified and that the company has received a lot of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed patterns in recent customer feedback to determine the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction may be the factor we place the most value on, as it reflects the quality of services across nearly every category, including warranty, quality of installation, quality of parts, cost, professionalism and more.
Cost
Cheaper windows don’t necessarily mean better windows, but we know many of our readers try to keep costs as low as possible. When analyzing providers’ prices, we awarded higher points to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
Protecting your investment in new windows is important. For that reason, window installation companies that provide 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 proven track record in the industry. Window installation companies that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Amherst, NH Window Replacement FAQs
How much should a window install cost?
The national average cost of replacing a window is around $600 but can range between $200 and $1,200, depending on a variety of factors. The price is typically dependent on the type and material of the window, the location of your property and the size of the window. Also, remember that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
Which type of window should I get?
Generally, double-pane windows will be more efficient than single-pane windows and windows that do not open are more efficient than windows that do. To be sure you’ll have the most energy-efficient windows, look for models with the blue Energy Star certification — that means they’re certified energy-efficient by the U.S. Department of Energy.
When do I need to use a window installation company?
You should hire a window installation company whenever you need to replace your windows. Installing windows is a complicated process that can take a lot of time, so it’s best left to the professionals.
When is it time to replace your windows?
Windows generally have a lifespan of around 20 to 30 years, but anytime you see damage on your windows, it’s a good time to have them looked at by an expert to determine if they are in need of a repair or replacement.
How long does window installation usually take?
Because the average installation time of a window is 30 minutes, about 16 windows can be installed during an 8-hour work day.