29 Best Window Replacement Companies in Portland, CT (Mar 2023)
Window Companies Near Me
Are you thinking of replacing your windows? Our list of the top window installation companies can help you narrow down which one to pick.
We analyzed all the top window installers in Portland and selected the top 29 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated March 14, 2023
Why you can trust EcoWatch
A guide on the best window installation companies in Portland may not seem like the most interesting article on EcoWatch, but trust us, windows impact your life more than you might think. Potential leaks or drafts from your windows can make your AC or heater work extra hard in the summer or winter.
Installing efficient windows on your property can help you save money every month on your power bills — and you can help the environment as well.
Because windows have such a great impact on your home, choosing the right company for you is a big decision to make. That's why the EcoWatch team has made this list of the top window replacement companies, so you can make an informed decision more easily.
Best Affordability
Window World
- Lifetime warranty
- Great industry reputation
- Large serice area
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Award-winning company
- Manufactures products in-house
- Member of US Green Building Council
- No lifetime warranty
Best for Residential Windows
Window Nation
- Custom designs
- Manufactures products in-house
- Award-winning company
- Installation not covered by warranty
Best Window Replacement Companies in Portland
The EcoWatch Reviews team examined dozens of installers in Portland to find the best ones for our readers. The installers we've reviewed in this article scored best in our categories: energy-efficient offerings, availability, price, customer service and more.

Window World
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Lifetime warranty
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Great industry reputation
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Large serice area
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Quality of service will depend on your area
Window World provides windows expertise in Portland. Window World has been in the window installation industry for around 27 years.
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 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 offerings are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.
How much does Window World cost in Portland?Window World doesn't have any prices listed on its website, but it's known for offering some of the most affordable window installations around. For more accurate information on the cost, you can inquire about a quote from the company.

Renewal by Andersen
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Award-winning company
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Manufactures products in-house
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Member of US Green Building Council
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No lifetime warranty
Renewal by Andersen offers the best availability in Portland. This company has 27 years of experience in the windows industry, and it has become one of the most reputable companies in Portland. Its reputation is backed by all the positive reviews on customer review websites.
You may want to consider opting for Andersen 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.
Energy Efficiency of Renewal by Andersen WindowsA 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. Not all of Andersen's offerings are Energy Star certified, so make sure you mention that you want Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Portland?Andersen doesn't have any prices 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. Requesting a free quote on its website is the best way to know for sure.

Window Nation
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Custom designs
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Manufactures products in-house
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Award-winning company
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Installation not covered by warranty
Window Nation is a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has around 16 years of experience in the window installation industry. Its reputation is backed by many positive reviews from customers online.
It gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsWindow Nation is an Energy Star partner and has 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 Window Nation representative when inquiring about services.
How much does Window Nation cost in Portland?Window Nation does not outline prices on its 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. The best way to know for sure is to receive a free quote from the company.

Aeroseal Windows
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Many years of experience
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Great industry reputation
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Low number of customer complaints
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Manufactures products in-house
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Custom Designs
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No lifetime warranty
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Not ideal for residential installations
Aeroseal Windows has the best window installation for businesses in Portland. It's an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. This provider has 23 years of experience in the windows business, and it has become one of the most reputable companies in the business. Hundreds of positive reviews from customers online back the provider's reputation.
It has established itself as a company that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for Energy Star windows when inquiring. 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 Portland?Prices aren't listed on Aeroseal's website, but it provides high-quality windows at a competitive price point. For more accurate information on pricing, you can inquire about a quote from the company.
We strive to stay unbiased and transparent by describing pros and cons for every company we review. Additionally, our rankings are not influenced by any partnerships.
More Window Replacement Companies in Portland
Renewal by Andersen - Branford
Branford, CT-
No-fee Quotes
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Dependable Service
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Good Customer Service
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Educational Website
Services Offered
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Residential Windows
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Custom Windows
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Business 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
Renewal by Andersen - Southern New England
Windsor Locks, CT-
Good Customer Service
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Dependable Service
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Arrives on Time
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No-fee Quotes
Services Offered
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Residential Windows
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Custom Windows
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Business Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay & Bow Windows
Nu-Face Home Improvements
Plantsville, CT-
Free Quotes
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Award-Winning
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Reliable Appointment Windows
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Price Transparency
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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Reliable Appointment Windows
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Free Quotes
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Good Customer Service
Services Offered
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Glass Showers
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Energy-Efficient Options
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay Windows
Eastern Glass & Shower Door
Milford, CT-
No-fee Quotes
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No-Hassle Pricing
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Good Customer Service
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Helps Educate Customers
Services Offered
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Doors
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Full-Service Installations
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Custom Windows
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Tempered Glass
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Residential Windows
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Commercial Windows
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Aluminum Window Frames
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Sliding Glass
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Glass Showers
Mainville Windows & Doors
Newington, CT-
No-Hassle Pricing
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No-fee Quotes
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Good Customer Service
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Reliable Appointment Windows
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
United Glass & Mirror Co
Bozrah, CT-
Helps Educate Customers
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Excellent Customer Service
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Award-Winning
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Price Transparency
Services Offered
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Residential Windows
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Architectural Glass
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Glass Showers
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Heavy Glass
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Tempered Glass
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Doors
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Custom Window Designs
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Business Windows
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Sliding Glass
Window World of Hartford
Manchester, CT-
Timely Service
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Consistent Workmanship
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Locally Recognized for Quality
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Good Customer Service
Services Offered
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Custom Window Designs
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Fast Delivery
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Sliding Glass
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Double-Hung
V. Nanfito Roofing & Siding
Meriden, CT-
Award-Winning
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Free Quotes
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Educational Website
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Timely Service
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 Windows
Mr. Handyman of Norwich, New London and Glastonbury
Norwich, CT-
No-fee Quotes
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Excellent Customer Service
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Price Transparency
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Helps Educate Customers
Services Offered
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Custom Windows
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Residential Windows
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Business Windows
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Double-Hung
Mr. Handyman of Guilford, North and East Haven
East Haven, CT-
Arrives on Time
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Good Customer Service
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No-Hassle Pricing
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Consistent Workmanship
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-
Helps Educate Customers
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Excellent Customer Service
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No-fee Quotes
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No-Hassle Pricing
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 Windows
Peter L Brown
Granby, CT-
Timely Service
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Price Transparency
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Helps Educate Customers
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Free Quotes
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-
Educational Website
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No-Hassle Pricing
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Free Quotes
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Good Customer Service
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-
Good Customer Service
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No-Hassle Pricing
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Helps Educate Customers
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Free Quotes
Services Offered
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Architectural Glass
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Energy-Efficient Options
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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
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Bay Windows
Clinton Glass
Clinton, CT-
Good Customer Service
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Educational Website
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Award-Winning
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Free Quotes
Services Offered
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Residential Windows
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Glass Showers
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Fast Delivery
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Custom Window Designs
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Business Windows
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Sliding Glass
Plymouth Glass & Mirror, Inc.
Thomaston, CT-
Helps Educate Customers
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Good Customer Service
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Locally Recognized for Quality
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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-
Locally Recognized for Quality
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Consistent Workmanship
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No-fee Quotes
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Excellent Customer Service
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
Thomas Garbati Builders, LLC
Waterford, CT-
Helps Educate Customers
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Excellent Customer Service
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Free Quotes
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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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Double-Hung
Renewal by Andersen Windows Connecticut
Cromwell, CT-
Consistent Workmanship
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Free Quotes
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Good Customer Service
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Price Transparency
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 & Bow Windows
Wallingford Glass
Wallingford, CT-
Price Transparency
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Consistent Workmanship
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Good Customer Service
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Free 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 Windows
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Business Windows
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Double-Hung
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Stained Glass
Ring's End
Madison, CT-
No-fee Quotes
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Price Transparency
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Educational Website
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Excellent Customer Service
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Windows
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Business Windows
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Aluminum Window Frames
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Architectural Glass
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Fast Delivery
Ring's End
Branford, CT-
Excellent Customer Service
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No-fee Quotes
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Educational Website
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Price Transparency
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Windows
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Commercial Windows
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Aluminum Window Frames
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Architectural Glass
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Fast Delivery
Cussons Sash
Glastonbury, CT-
No-Hassle Pricing
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Reliable Service
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Good Customer Service
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Educational Website
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
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Sliding Glass
Fiderio & Sons
Meriden, CT-
Reliable Service
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No-fee Quotes
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Timely Service
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Excellent Customer Service
Services Offered
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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
Major Home Improvements LLC - Roofing
Springfield, MA-
Reliable Service
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Helps Educate Customers
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Excellent Customer Service
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Price Transparency
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-
Free Quotes
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No-Hassle Pricing
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Dependable Service
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Educational Website
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-
Excellent Customer Service
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Arrives on Time
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Helps Educate Customers
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Free Quotes
Services Offered
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Custom Window Designs
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Aluminum Window Frames
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Sliding Glass
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Double-Hung
Window Nation
Wallingford, CT-
Excellent Customer Service
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Educational Website
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Price Transparency
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Dependable Service
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
How Installing Energy-Efficient Windows in Portland Saves You Money
Upgrading to energy-efficient windows can improve the comfort of your home and help you save on power bills. Here are more ways upgrading your windows could help you:
- Protect your investment: When your home is on the older side, your windows could also be outdated or leaky. Keeping your windows up to date is an important part of maintaining your property and its real estate value.
- Protect your valuables from fading: When you switch to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will be protected from fading because of their ability to filter out damaging UV rays.
- Decrease your carbon footprint: Because energy-efficient windows improve the insulation in your house, you can cut your carbon footprint by about 12%, according to Energy Star.
- Save on energy bills: The Department of Energy estimates that heat gained or lost via windows accounts for around 25-30% of residential energy use. Upgrading to energy-efficient windows can help decrease that number, which helps you save more on your bills.
Estimated Cost of Window Replacement in Portland
When looking into window installation, each company offers different services and prices. Let's take a look at some average costs and services.
How Much Do New Windows Cost?
According to our research, the national average cost of replacing a single window is about $600. However, window replacement costs can range from $200 to $1,200 per window. How much it will cost depends on several factors, such as number of windows, the location of your home, type, size, material and more.
It's also worth noting that energy-efficient windows will usually cost more initially, but Energy Star estimates that switching out the windows on your Portland home translates to an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. How much you'll save by upgrading to energy-efficient windows depends on your local climate, energy rates and other factors unique to your home.
Costs will also vary depending on the material you choose for your window frames. Aluminum frames cost the least. They're sturdy, light and maintenance-free, but provide poor insulation. Vinyl frames are somewhat expensive and provide good insulation. Composite frames made using wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They're also aesthetically pleasing and provide decent insulation for your home.
What Services do Window Installers Offer?
In general, there are two kinds of window replacement services companies provide: full-frame and pocket installations.
A full-frame installation is a total window replacement. It involves taking out the old window, the windowsill, and the exterior and interior trim. It can also involve other materials, including insulation and drip edges, which raise the total cost of the project. Also worth noting: it's not uncommon for homeowners to have to touch up the paint around the window after a full-frame installation. Pocket installations (or retrofits) involve installing a new window within its existing frame, which makes pocket installations more simple and affordable. But, if the frame has any damage or rot, you should opt for a full-frame installation instead.
If you're not sure which kind of window installation service you should get, your installer should be able to help you out. Generally, the choice is influenced by factors such as the age and condition of the home, the type of building material, budget and time restrictions.
Best Affordability
Window World
- Lifetime warranty
- Great industry reputation
- Large serice area
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Award-winning company
- Manufactures products in-house
- Member of US Green Building Council
- No lifetime warranty
Best for Residential Windows
Window Nation
- Custom designs
- Manufactures products in-house
- Award-winning company
- Installation not covered by warranty
How We Choose the Best Window Installers in Portland
The EcoWatch Reviews team differs from other reviewers because we look at these companies through a sustainability lens. We've evaluated the top window replacement companies in Portland mostly based on their energy efficient offerings, as it's what's best for the environment and for you as a homeowner. Energy Star certified windows can lower energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
Since this is a guide for Portland, we only included companies that cover the city. There are certainly reputable providers that didn't make our list because of the low odds that they would serve the average homeowner in Portland.
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 company included in our guide to make sure its technicians are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.
Customer Reviews
Customer feedback is another super important review factor. If the majority of customers don't have nice things to say about their service from a certain company, you won't see it featured on EcoWatch.
Cost
Cheaper windows don't necessarily mean better windows, but we know many of our readers try to keep costs low when possible. When analyzing the prices of providers, we awarded higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed, windows are a sizable investment, so you'll want to make sure 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 Portland's climate, homeowners will want to mitigate water damage, low efficiency and rot. We factored in local experience to reflect the ability of Portland window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Portland, CT Window Replacement FAQs
What is the typical cost to replace windows in a home?
The national average cost to install a window is about $600 but can range from $200 to $1,200, depending on a few different factors. The price is usually dependent on the location of your property, the size of the window and the type and material 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.
What are the kinds of windows?
There are various types of windows you can get for your house, including slider windows, double-hung and single-hung windows, bay windows, picture windows, casement windows, awning windows and transom windows.
When should I use a window installation company?
Unless you have home repair skills and have the time to replace your own windows, we recommend hiring a professional. The process of installing windows is quite involved and can take anywhere from four to six hours for one window. Although it's tempting to try to save some money by doing it yourself, hiring a company is a faster, more efficient and much safer alternative.
How long does window installation usually take?
Each window takes about 30 minutes to install depending on the kind of window. However, the window installation can take two days or more if you need to have a lot of windows installed.
When is it time to replace your windows?
Windows have an average lifespan of about 20 to 30 years. If your windows are older than that, then they should probably be replaced. Apart from that, if your windows have any damage on them, or they have become difficult to operate, they may need to be replaced.