24 Best Window Replacement Companies in Harwinton, CT (2023 Reviews)
Window Companies Near Me
Looking to upgrade your windows? We've got you covered in this guide to the top window installation companies.
We analyzed all the top window installers in Harwinton and selected the top 24 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 March 14, 2023
Why you can trust EcoWatch
Whether you're doing home renovations or have damaged windows, windows play a vital role in conserving your home's electricity. Poor windows can cut your home's energy efficiency by up to 30%, according to the Department of Energy. In Harwinton, that's nearly $486 per year that you could save on your power bills after making the switch.
Thankfully, helping you save money with upgraded windows also aligns with our goals of conserving energy and the resources it takes to produce it.
So if you're constructing a new home, renovating or replacing your windows in Harwinton, you've found the best place to get started.
Best Overall
Renewal by Andersen
- Award-winning company
- Great industry reputation
- Member of US Green Building Council
- More expensive than competition
Best Affordability
Window World
- Great industry reputation
- EnergyStar Partner
- Lifetime warranty
- Quality of service will depend on your area
Best for Residential Windows
Window Nation
- Wide variety of products and services
- Custom designs
- Manufactures products in-house
- Installation not covered by warranty
Best Window Replacement Companies in Harwinton
The EcoWatch team assessed dozens of installers across the country to find the best window companies for our readers. The providers mentioned in this article passed our review standards for energy-efficient offerings as well as customer service, price, local expertise and beyond.

Renewal by Andersen
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Award-winning company
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Great industry reputation
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Member of US Green Building Council
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More expensive than competition
Renewal by Andersen has the best availability in Harwinton. Andersen has been in the window business for about 27 years. Hundreds of positive reviews from customers online back the provider's reputation.
If you're looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, this may be the company for you.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen carries some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for 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 Harwinton?Andersen does not display prices 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. The best way to get more accurate pricing information is to ask for a free quote from the company.

Window World
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Great industry reputation
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EnergyStar Partner
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Lifetime warranty
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Quality of service will depend on your area
Window World offers windows expertise in Harwinton. Window World has about 27 years of experience in the window installation industry. Its reputation is backed by many positive reviews on customer review websites.
If you're looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital, this may be the perfect provider for you.
Energy Efficiency of Window World WindowsIts high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World's windows are Energy Star certified, so make sure you mention that you'd like Energy Star windows when inquiring.
How much does Window World cost in Harwinton?Pricing details are not available on Window World's website, as the cost of window replacement depends on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. Receiving a free quote on its website is the best way to get more accurate pricing information.

Window Nation
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Wide variety of products and services
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Custom designs
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Manufactures products in-house
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Installation not covered by warranty
Window Nation has the best residential windows in Harwinton. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has about 16 years of experience in the windows industry, and it currently serves residents within 75 miles of its showrooms, which are in 13 states. Hundreds of positive reviews on customer review websites back the company's reputation.
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 perfect provider for you.
Energy Efficiency of Window Nation WindowsThere are a wide range 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 Harwinton?Prices aren't displayed on Window Nation's website, but 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 pricing information, you can receive 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 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 been in the window business for around 23 years.
If you're looking for a company that installs windows and doors at businesses across the Eastern U.S, this may be the provider for you.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows is an Energy Star partner and offers a variety of energy-efficient windows that are Energy Star certified. 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 Harwinton?Prices are not available on Aeroseal's website since the cost of window replacement differs based on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. Requesting a free quote on its website is the best way to get more accurate information.
We've recommended installers with shining reputations, but keep in mind these are national companies, so the quality of service may depend on your local crew. We have tried to remain unbiased and transparent by mentioning pros and cons for each company reviewed.
More Window Replacement Companies in Harwinton
TL Home Improvement LLC
Shelton, CT-
Locally Recognized for Quality
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Free Quotes
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Good Customer Service
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Arrives on Time
Services Offered
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Residential Windows
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Fast Delivery
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Double-Hung
Renewal by Andersen - Southern New England
Windsor Locks, CT-
Timely Service
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Good Customer Service
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Price Transparency
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Locally Recognized for Quality
Services Offered
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Residential Windows
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Custom Windows
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Commercial Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay Windows
Nu-Face Home Improvements
Plantsville, CT-
Excellent Customer Service
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Consistent Workmanship
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No-Hassle Pricing
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Locally Recognized for Quality
Services Offered
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Residential Windows
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Glass Showers
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Energy-Efficient Options
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Custom Window Designs
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Double-Hung
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Sliding Glass
Advanced Window Systems LLC
Cromwell, CT-
Educational Website
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Arrives on Time
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Excellent Customer Service
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Dependable Service
Services Offered
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Glass Showers
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Energy-Efficient Options
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Mainville Windows & Doors
Newington, CT-
Good Customer Service
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Educational Website
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Free Quotes
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Arrives on Time
Services Offered
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Residential Windows
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Custom Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
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Sliding Glass
Window World of Hartford
Manchester, CT-
Reliable Service
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Award-Winning
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Helps Educate Customers
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No-fee Quotes
Services Offered
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Custom Windows
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Fast Delivery
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Sliding Glass
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Double-Hung
V. Nanfito Roofing & Siding
Meriden, CT-
Educational Website
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Excellent Customer Service
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Reliable Appointment Windows
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Award-Winning
Services Offered
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Residential Windows
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Commercial Windows
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Full-Service Installations
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Custom Window Designs
Mr. Handyman of Guilford, North and East Haven
East Haven, CT-
No-Hassle Pricing
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Timely Service
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Educational Website
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Reliable Service
Services Offered
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Custom Window Designs
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Residential Windows
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Business Windows
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Double-Hung
Turner Home Improvement Contractors, LLC,
Glastonbury, CT-
No-fee Quotes
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Price Transparency
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Arrives on Time
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Educational Website
Services Offered
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Residential Windows
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Commercial Windows
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Full-Service Installations
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Custom Window Designs
Peter L Brown
Granby, CT-
Dependable Service
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Reliable Appointment Windows
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No-fee Quotes
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Educational Website
Services Offered
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Capitol Glass Co Inc
West Hartford, CT-
No-Hassle Pricing
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Helps Educate Customers
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Excellent Customer Service
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Free Quotes
Services Offered
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Residential Windows
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Architectural Glass
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Doors
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Custom Windows
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Aluminum Window Frames
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Full-Service Installations
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Business Windows
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Sliding Glass
Torrington Replacement Windows
Torrington, CT-
No-fee Quotes
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Excellent Customer Service
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Price Transparency
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Educational Website
Services Offered
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Architectural Glass
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Plymouth Glass & Mirror, Inc.
Thomaston, CT-
Good Customer Service
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Helps Educate Customers
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No-Hassle Pricing
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Free Quotes
Services Offered
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Glass Showers
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Residential Windows
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Architectural Glass
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Doors
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Custom Windows
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Business Windows
Villwell Builders, LLC
Waterbury, CT-
Good Customer Service
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Locally Recognized for Quality
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Free Quotes
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Dependable Service
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
Pella Windows & Doors of West Springfield
West Springfield, MA-
Free Quotes
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Price Transparency
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Good Customer Service
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Award-Winning
Services Offered
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Residential Windows
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Architectural Glass
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Custom Windows
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Commercial Windows
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Double-Hung
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Sliding Glass
Renewal by Andersen Windows Connecticut
Cromwell, CT-
Free Quotes
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Reliable Service
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Excellent Customer Service
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No-Hassle Pricing
Services Offered
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Double-Hung
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Sliding Glass
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Bay Windows
Wallingford Glass
Wallingford, CT-
Price Transparency
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Reliable Service
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Good Customer Service
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No-fee Quotes
Services Offered
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Residential Windows
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Tempered Glass
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Doors
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Custom Window Designs
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Commercial Windows
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Double-Hung
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Stained Glass
Cussons Sash
Glastonbury, CT-
No-Hassle Pricing
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Free Quotes
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Gives to charity
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Educational Website
Services Offered
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Custom Windows
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Residential Windows
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Business Windows
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Sliding Glass
Fiderio & Sons
Meriden, CT-
Excellent Customer Service
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Free Quotes
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No-Hassle Pricing
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Educational Website
Services Offered
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Custom Windows
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Aluminum Window Frames
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Full-Service Installations
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Double-Hung
Major Home Improvements LLC - Roofing
Springfield, MA-
Consistent Workmanship
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No-fee Quotes
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Excellent Customer Service
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Timely Service
Services Offered
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Double-Hung
Vovk Home Improvement Siding~Roof~Windows
Feeding Hills, MA-
Timely Service
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Free Quotes
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Dependable Service
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Helps Educate Customers
Services Offered
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
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Double-Hung
J C Tonnotti Window Co
Southington, CT-
Reliable Appointment Windows
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Reliable Service
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No-Hassle Pricing
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Free Quotes
Services Offered
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Custom Windows
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Aluminum Window Frames
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Sliding Glass
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Double-Hung
Window Nation
Wallingford, CT-
Locally Recognized for Quality
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Good Customer Service
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Free Quotes
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Educational Website
Services Offered
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Sliding Glass
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Custom Windows
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Energy-Efficient Options
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Double-Hung
Pella Windows & Doors of Monroe
Monroe, CT-
Free Quotes
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Price Transparency
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Good Customer Service
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Award-Winning
Services Offered
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Residential Windows
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Custom Window Designs
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Business Windows
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Double-Hung
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Sliding Glass
How Installing Energy-Efficient Windows in Harwinton Saves You Money
By switching to energy-efficient windows, you and your family can benefit in several ways, such as:
- Save on energy bills: The Department of Energy estimates that heat gained or lost through windows accounts for about 25-30% of household energy use. Switching to energy-efficient windows can help lower that number, which helps you save more on your bills.
- Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes tend to have windows that are outdated, leaky or potentially even damaged in some way. Upgrading your windows could help raise the value of your property if you decide to sell.
- Reduce your carbon footprint: By using less energy once switching to Energy Star certified windows, you'll also be lowering your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only provide better insulation for your home, but also filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
Estimated Cost of Window Replacement in Harwinton
Windows come in different shapes and sizes, so costs and services will vary tremendously. Here are the average costs and the primary services that you can find from window installation companies.
How Much Do New Windows Cost?
According to our research, the national average cost of replacing a single window is about $600. However, window installation costs can range from $200 to $1,200 a window. This is because window installations are based on several 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.
Whether or not you want to install energy-efficient windows is another factor that will determine the cost. These will almost always cost more than other windows, but on the other hand, you can save about $486 a year on your energy bills in Harwinton.
Another factor that affects the overall cost is the material of the frame you select. Aluminum frames are generally the least expensive and are sturdy and relatively maintenance-free, but they provide poor insulation. On the other hand, wood frames are the most expensive, as they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.
What Services do Window Installers Offer?
There are typically two types of window installation services: full-frame and pocket installations.
Full-frame installations require replacing the whole window — the sill, frame, trim and all. These are most common when you want a new style for your windows or when it has significant damage. Full-frame installations require more time and labor and will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window while leaving the existing frame. Pocket installations are on the simpler end and won't carry as large a bill, but you can't do this type of installment if you have any pre-existing rot or water damage.
If you're unsure which type of window installation service you need, your installer should be able to advise you. In general, the choice is based on factors like the age and condition of the home, the type of building material, budget and time restrictions.
Best Overall
Renewal by Andersen
- Award-winning company
- Great industry reputation
- Member of US Green Building Council
- More expensive than competition
Best Affordability
Window World
- Great industry reputation
- EnergyStar Partner
- Lifetime warranty
- Quality of service will depend on your area
Best for Residential Windows
Window Nation
- Wide variety of products and services
- Custom designs
- Manufactures products in-house
- Installation not covered by warranty
How We Choose the Best Window Installers in Harwinton
EcoWatch differs from other reviewers, as we're examining these companies through a sustainability lens. Along with energy efficiency, we evaluated several window installers in Harwinton and ranked them based on the following methodology:
Service Area
This one is pretty self-explanatory, but we've chosen to highlight window installers that serve the Harwinton area so you can find the right window installation company near you.
Work Quality
When choosing new windows, the quality and variety of services often plays just as important of a role in insulation and performance as the type of window you choose. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
Customer feedback is another very important review factor. If the majority of customers don't have nice things to say about their experience with a certain window installation company, you won't see it featured on EcoWatch.
Cost
This one is a give-and-take: similar to most services, cheap window installers may not provide the highest quality service. On the other hand, we want to ensure we're highlighting companies that provide a variety of price and financing options so they're accessible to most homeowners.
Warranty
Protecting your investment in new windows is important to many homeowners. That's why window installation companies with lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Due to Harwinton's climate, homeowners need to be wary of low efficiency, water damage and rot. We factored in local experience to reflect the ability of Harwinton window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Harwinton, CT Window Replacement FAQs
What is the average cost to replace windows in a home?
The national average cost of replacing one window is about $600 but can range from $200 to $1,200, depending on several factors. The price is typically dependent on the location of your property, the size of the window and the type and material of the window. Also, keep in mind that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
What are the most common kinds of replacement windows?
There are several different types of windows you can get for your home, including transom windows, casement windows, bay windows, awning windows, double-hung and single-hung windows, slider windows and picture windows.
What services do window replacement companies provide?
Window installers go to your property to remove your old windows and replace them with new ones. Some companies install products made by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation.
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 be a two-day job — or more — if you need to have a lot of windows installed.
How often do you need to replace your windows?
Windows typically have a lifespan of about 20 to 30 years, but anytime you notice 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.