20 Best Window Companies in Granby, MA (2023 Reviews)
Are you thinking of replacing your windows? Our guide to the best window installation companies can help you choose the right one for you.
We analyzed all the top-rated window companies in Granby and selected the best 20 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 doing home renovations or have windows that need repairs, windows play a vital role in conserving energy in your home. If you have traditional, outdated windows, your HVAC system could be working overtime to heat or cool your house. This means spending more on electric bills.
That's also bad news for the environment, as the additional energy used by drafty windows increases your carbon footprint.
We've put together this guide on the best installation companies to help you in your research, so you can not only take advantage of brand new windows, but also save money on your electricity bills.
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 Granby
The EcoWatch team researched several window installation companies across Granby to narrow our list down to the best ones. The providers in this article scored best in our review categories, such as energy-efficient offerings, availability, price, local expertise, customer service 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 offers windows expertise in Granby. It's 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. The provider has a lot of glowing reviews from customers online.
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 WindowsWindow World carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to mention that you want high-quality 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 Granby?Window World doesn’t have any cost information displayed on its website, but it's known for offering some of the most affordable window installations around. If you’d like to know for sure, you can inquire about a quote on the company’s website.

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 offers the best availability in Granby. It's 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. The provider has a lot of glowing reviews from customers online.
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 WindowsRenewal by Andersen carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to mention that you want high-quality 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 Granby?Andersen doesn’t have any cost information displayed on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. If you’d like to know for sure, you can inquire about a quote on the company’s website.

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 offers the best window installation for businesses in Granby. 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 windows industry, and it currently serves 13 states and Washington D.C. Its reputation is backed by several positive reviews on customer review websites.
You may want to consider choosing Aeroseal if you're looking for a company that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows’s commitment to sustainability shows in its energy-efficient window offerings. 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 Granby?Prices are not available on Aeroseal’s website because the cost of window replacement varies greatly depending on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. Getting a free quote on its website is the best way to get more accurate information.

Window Nation
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Award-winning company
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Manufactures products in-house
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Custom designs
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Wide variety of products and services
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Installation not covered by warranty
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Limited service area
Window Nation offers the best residential windows in Granby. Window Nation has been in the window installation industry for about 16 years.
If you’re looking for a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms, this may be the right provider for you.
Energy Efficiency of Window Nation WindowsThere are a wide variety of window types available from Window Nation, some of which are Energy Star products. Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation.
How much does Window Nation cost in Granby?Pricing details are not available on Window Nation’s website since the cost of window installment differs based on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. If you’d like more accurate information, you can ask for a quote on the company’s website.
We try to stay unbiased and transparent by describing pros and cons for each company we review. Additionally, our rankings are not influenced by any partnerships.
More Window Companies in Granby
Renewal by Andersen - Southern New England
Windsor Locks, CT-
Educational Website
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Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Stained Glass
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Sliding Glass
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Window Replacement
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Residential Windows
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Double-Hung
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Custom Window Designs
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Glass Showers
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Commercial Windows
Window World of Western Massachusetts
Belchertown, MA-
Free assessment
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Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Window Replacement
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Fast Delivery
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Double-Hung
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Residential Windows
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Sliding Glass
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Aluminum Window Frames
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Custom Window Designs
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Bay Windows
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Energy-Efficient Options
Window Nation
Wallingford, CT-
Good Customer Service
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Free assessment
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Price Transparency
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Educational Website
Services Offered
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Double-Hung
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Custom Window Designs
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Sliding Glass
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Energy-Efficient Options
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Stained Glass
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Window Replacement
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Bay Windows
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Residential Windows
Pella Windows & Doors of West Springfield
West Springfield, MA-
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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Window Replacement
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Residential Windows
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Custom Window Designs
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Sliding Glass
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Bay Windows
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Double-Hung
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Commercial Windows
Kubala Home Improvement
Ludlow, MA-
Price Transparency
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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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Window Replacement
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Double-Hung
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Commercial Windows
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Sliding Glass
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Residential Windows
Yankee Glass
Chicopee, MA-
Good Customer Service
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Timely Service
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Price Transparency
Services Offered
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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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Full-Service Installations
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Custom Window Designs
American Installations
South Hadley, MA-
Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Sliding Glass
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Fast Delivery
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Custom Window Designs
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Glass Showers
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Window Replacement
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Residential Windows
Home Services at The Home Depot
Wilbraham, MA-
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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Stained Glass
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Glass Showers
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Window Replacement
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Custom Window Designs
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Commercial Windows
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Residential Windows
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Fast Delivery
BuildEx Construction Inc
West Springfield, MA-
Timely Service
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Price Transparency
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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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Commercial Windows
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Window Replacement
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Residential Windows
Finyl Vinyl - Siding - Windows - Roofing
Chicopee, MA-
Educational Website
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Price Transparency
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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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Bay Windows
Marvin
Enfield, CT-
Educational Website
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Good Customer Service
Services Offered
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Residential Windows
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Commercial Windows
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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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Window Replacement
United Home Experts of Hartford County
Enfield, CT-
Educational Website
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Price Transparency
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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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Window Replacement
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Commercial Windows
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Residential Windows
Long Home Products
Windsor, CT-
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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Bay Windows
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Window Replacement
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Residential Windows
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Double-Hung
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Glass Showers
Pella Window & Door
Greenfield, 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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Double-Hung
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Sliding Glass
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Stained Glass
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Fast Delivery
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Residential Windows
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Window Replacement
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Commercial Windows
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Custom Window Designs
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Glass Showers
Harris Home Improvement
Granby, CT-
Educational Website
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Timely Service
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Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Residential Windows
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Glass Showers
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Double-Hung
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Fast Delivery
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Custom Window Designs
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Window Replacement
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Commercial Windows
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Window Repair
Greenfield Glass Co Inc
Greenfield, MA-
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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Window Replacement
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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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Residential Windows
Big Dawg Home Improvements
South Windsor, CT-
Timely Service
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Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Window Replacement
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Aluminum Window Frames
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Fast Delivery
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Bay Windows
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Custom Window Designs
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Residential Windows
Mercury Excelum Inc
East Windsor, CT-
Good Customer Service
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Educational Website
Services Offered
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Window Replacement
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Residential Windows
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Fast Delivery
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Custom Window Designs
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Energy-Efficient Options
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Commercial Windows
A-1 Windows & Doors LLC
Simsbury, CT-
Good Customer Service
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Price Transparency
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Free assessment
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Timely Service
Services Offered
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Residential Windows
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Commercial Windows
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Custom Window Designs
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Window Repair
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Window Replacement
Innerglass Window Systems
Herman Dr, CT-
Price Transparency
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Free assessment
Services Offered
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Tempered Glass
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Custom Window Designs
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Energy-Efficient Options
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Window Replacement
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Residential Windows
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Commercial Windows
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Stained Glass
Calculate how much you can expect to pay for window installation and replacement in Granby, MA 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 Granby Saves You Money
There are several benefits of switching to energy-efficient windows. A few reasons you may want to consider making the switch include the following:
- Protect your investment: Upgrading your windows is an important part of maintaining your property and its real estate value, especially if you have an older home.
- More efficient energy use in your household: In Granby where the summers can get pretty warm, energy-efficient windows lower the amount of cool air that is lost through your windows, which makes it easier to keep your home cool.
- Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only provide better insulation for your home, but also filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
- Save on electricity bills: According to the Department of Energy, heat gained or lost through windows accounts for around 25-30% of residential energy use. Installing energy-efficient models can help reduce that amount, therefore saving you about 12% more on your bills.
Estimated Cost of Window Replacement in Granby
Each window installation company offers various services and has varying prices depending on a few factors.
How Much Do New Windows Cost?
Generally, Granby homeowners can expect their window replacements to range from $250 to $1,200. The most common installations sit at around $600. This is because of the fact that window installations depend on a variety of factors specific to your home, including the size, material and number of windows you need to replace, as well as the location of your property.
It's important to keep in mind that windows with higher efficiency may cost more initially but can save you hundreds of dollars by lowering your energy bills. Investing in certified energy-efficient windows can save Granby homeowners $475+ a year when replacing single-pane windows.
The cost of your window installation will also vary based on the kind of window material you choose for the frames. Wood windows are usually the most expensive, but it depends if they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are more efficient.
What Services do Window Installers Offer?
There are typically two types of window installation services: full-frame and pocket installations.
A full-frame installation replaces the complete window, including the windowsill, frame, trim and the window panes. As this type of installation requires more time, it will be more expensive than a pocket installation. Pocket installations (also known as retrofits) are when you replace a window within its existing frame. Pocket installations are simpler and won't cost as much, but you can't do this type 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 talk to your installer and get their recommendation. The decision mostly depends on the age of your window frames and if there's any damage.
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 Granby
EcoWatch is different from other reviewers since we assess these companies through a sustainability lens. Along with energy efficiency, we evaluated each installer and assigned rankings using the following methodology:
Service Area
Since this is a guide for Granby, we only included companies that provide services to the city. There are certainly reputable providers that didn't make our list because they wouldn't be able to serve homeowners in Granby.
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 contractors are well-qualified and that the company has gotten lots of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed patterns in recent online reviews to determine the companies with the most 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 most other categories, including cost, quality of parts, warranty, quality of installation, professionalism and more.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers try to keep costs as low as possible. When analyzing 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 significant investment, so you'll want to be certain that investment is well protected. Window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to Granby's climate, homeowners need to be wary of water damage, rot and low efficiency. We factored in local experience to reflect the ability of Granby window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Granby, MA Window Replacement FAQs
What is the average cost to replace windows?
The national average cost to replace a single window is about $600 but can range from $200 to $1,200, based on several factors. The price is often dependent on the type and material of the window, the size of the window and the location of your property. Also, bear in mind that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills.
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 are more efficient than windows that do. If you want to be sure you'll have the most energy-efficient windows, look for models that have the blue Energy Star certification — that means they're certified energy-efficient by the U.S. Department of Energy.
What services do window replacement companies provide?
Window installation professionals go to your house to remove your old windows and replace them with new ones. Some providers install products sold by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation is done.
How long does window installation take?
Each window takes around 30 minutes to install depending on the kind of window. However, the window installation can take two days or more if you have a lot of windows that need to be installed.