20 Best Window Companies in Portland, CT (2023 Reviews)
Looking to improve your home's energy efficiency? The best window replacement companies can help.
We analyzed all the top-rated window companies in Portland and selected the best 20 based on:
-
Customer reviews
-
Window installation expertise
-
Popularity with home-owners like you
Please enter a valid 5-digit zip code!

Updated September 15, 2023
Why you can trust EcoWatch
Although environmentally friendly energy sources like wind and solar are important when it comes to reducing your carbon footprint, improving your house's efficiency can also have a big impact on home energy conservation. During the winter months, the last thing you want is your heat to leak out of your outdated, drafty windows.
Installing energy-efficient windows on your home can help you save money each month on your electricity bills — and you can help the environment as well.
So if you're building a new home, renovating or replacing your windows in Portland, you've found the best place to get started.
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 Portland
The EcoWatch team assessed many installers in Portland to find the top ones for our readers. The installers in this article passed our review standards for energy-efficient offerings as well as price, customer service, local expertise and beyond.

Window World
-
EnergyStar Partner
-
Large serice area
-
Low prices relative to competitors
-
Great industry reputation
-
Lifetime warranty
-
Quality of service will depend on your area
Window World is the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the windows industry, and it has proved to be one of the most reputable companies in Portland.
You may want to consider choosing Window World if you're looking for a installer 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’s commitment to sustainability can be seen in its energy-efficient window offerings. 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 Portland?Pricing information is not available on Window World’s website because 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. The best way to get more accurate information is to receive a free quote from the company.

Renewal by Andersen
-
Great industry reputation
-
Award-winning company
-
Member of US Green Building Council
-
Manufactures products in-house
-
No lifetime warranty
-
More expensive than competition
Renewal by Andersen provides the best availability in Portland. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window business for about 27 years. The company has many glowing reviews from customers on online review websites.
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 is an Energy Star partner offering 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 mention that you want energy-efficient windows to your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Portland?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. You can inquire about a free quote on its website for more information about the cost.

Aeroseal Windows
-
Many years of experience
-
Great industry reputation
-
Low number of customer complaints
-
Manufactures products in-house
-
Custom Designs
-
No lifetime warranty
-
Not ideal for residential installations
Aeroseal Windows offers the best window installation for businesses in Portland. This company has 23 years of experience in the windows industry, and it has become one of the most reputable companies in the business. Many positive reviews from customers online back the company'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 WindowsThe 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. Not all of Aeroseal’s windows are Energy Star certified, so be sure to mention that you’d like Energy Star windows when inquiring.
How much does Aeroseal Windows cost in Portland?Aeroseal doesn’t have any cost information displayed on its website, but it provides high-quality windows at a competitive price point. If you’d like more accurate pricing information, you can ask for a quote on the company’s website.

Window Nation
-
Award-winning company
-
Manufactures products in-house
-
Custom designs
-
Wide variety of products and services
-
Installation not covered by warranty
-
Limited service area
Window Nation provides the best residential windows in Portland. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has been in the window business for about 16 years. The company has many glowing reviews from customers on online review websites.
It has established itself as a company that 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 offering 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 mention that you want energy-efficient windows to your Window Nation representative when inquiring about services.
How much does Window Nation cost in Portland?Window Nation doesn’t have any cost information displayed 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. You can inquire about a free quote on its website for more information about the cost.
One thing to note is that the following companies are national, which means the quality of the service may vary depending on your local crew. We have tried to stay unbiased and transparent by mentioning both pros and cons for every provider.
More Window Companies in Portland
Renewal by Andersen - Southern New England
Windsor Locks, CT-
Good Customer Service
-
Free assessment
-
Educational Website
-
Price Transparency
Services Offered
-
Window Replacement
-
Double-Hung
-
Custom Window Designs
-
Stained Glass
-
Commercial Windows
-
Residential Windows
-
Sliding Glass
-
Glass Showers
Window World of Hartford
Manchester, CT-
Price Transparency
-
Good Customer Service
-
Free assessment
-
Timely Service
-
Educational Website
Services Offered
-
Window Replacement
-
Fast Delivery
-
Double-Hung
-
Window Repair
-
Custom Window Designs
-
Residential Windows
-
Commercial Windows
-
Sliding Glass
-
Bay Windows
Window Nation
Wallingford, CT-
Price Transparency
-
Free assessment
-
Good Customer Service
-
Educational Website
Services Offered
-
Bay Windows
-
Window Replacement
-
Energy-Efficient Options
-
Double-Hung
-
Residential Windows
-
Custom Window Designs
-
Stained Glass
-
Sliding Glass
Nu-Face Home Improvements
Berlin, CT-
Free assessment
-
Good Customer Service
-
Price Transparency
-
Educational Website
Services Offered
-
Energy-Efficient Options
-
Fast Delivery
-
Window Replacement
-
Double-Hung
-
Custom Window Designs
-
Residential Windows
-
Commercial Windows
-
Glass Showers
Yargueta Construction
Newington, CT-
Free assessment
-
Price Transparency
-
Timely Service
-
Educational Website
-
Good Customer Service
Services Offered
-
Full-Service Installations
-
Custom Window Designs
-
Double-Hung
-
Commercial Windows
-
Window Replacement
-
Glass Showers
-
Residential Windows
Turner Home Improvement Contractors, LLC
Glastonbury, CT-
Free assessment
-
Good Customer Service
-
Educational Website
-
Timely Service
-
Price Transparency
Services Offered
-
Fast Delivery
-
Window Replacement
-
Commercial Windows
-
Residential Windows
-
Double-Hung
-
Custom Window Designs
Mainville Windows & Doors
Newington, CT-
Price Transparency
-
Free assessment
Services Offered
-
Custom Window Designs
-
Sliding Glass
-
Aluminum Window Frames
-
Residential Windows
-
Bay Windows
-
Glass Showers
-
Window Replacement
-
Commercial Windows
Castle Windows
East Berlin, CT-
Good Customer Service
-
Educational Website
-
Price Transparency
-
Free assessment
Services Offered
-
Residential Windows
-
Custom Window Designs
-
Window Replacement
Cussons Sash
Glastonbury, CT-
Educational Website
-
Free assessment
-
Good Customer Service
Services Offered
-
Commercial Windows
-
Fast Delivery
-
Custom Window Designs
-
Window Replacement
-
Residential Windows
Energy Busters LTD
Hartford, CT-
Free assessment
-
Good Customer Service
-
Educational Website
Services Offered
-
Window Replacement
-
Energy-Efficient Options
-
Custom Window Designs
-
Residential Windows
Peoples Products - HR40 Windows
Newington, CT-
Price Transparency
-
Free assessment
-
Good Customer Service
-
Educational Website
Services Offered
-
Commercial Windows
-
Aluminum Window Frames
-
Window Replacement
-
Residential Windows
-
Custom Window Designs
-
Energy-Efficient Options
-
Fast Delivery
Window Restorations of Connecticut - formerly Bi-Glass of Connecticut
Berlin, CT-
Price Transparency
-
Timely Service
-
Good Customer Service
Services Offered
-
Window Replacement
-
Energy-Efficient Options
-
Residential Windows
Home Services at The Home Depot
Berlin, CT-
Price Transparency
-
Free assessment
-
Good Customer Service
-
Educational Website
Services Offered
-
Fast Delivery
-
Stained Glass
-
Commercial Windows
-
Glass Showers
-
Window Replacement
-
Residential Windows
-
Custom Window Designs
Finestra Windows & Installation
West Hartford, CT-
Price Transparency
-
Free assessment
-
Educational Website
Services Offered
-
Double-Hung
-
Window Replacement
-
Tempered Glass
-
Custom Window Designs
-
Residential Windows
-
Glass Showers
Hometech Sunrooms & Remodeling
Southington, CT-
Good Customer Service
-
Free assessment
-
Price Transparency
Services Offered
-
Full-Service Installations
-
Glass Showers
-
Custom Window Designs
-
Window Replacement
-
Fast Delivery
-
Residential Windows
Highland Window Company, LLC
West Hartford, CT-
Good Customer Service
-
Free assessment
Services Offered
-
Window Replacement
-
Residential Windows
-
Double-Hung
Bencar Building Systems LLC
Wallingford, CT-
Good Customer Service
Services Offered
-
Glass Showers
-
Window Replacement
-
Custom Window Designs
-
Residential Windows
J.C. Tonnotti Window Company
Southington, CT-
Good Customer Service
-
Educational Website
-
Timely Service
Services Offered
-
Custom Window Designs
-
Window Replacement
-
Commercial Windows
-
Residential Windows
-
Aluminum Window Frames
-
Energy-Efficient Options
Big Dawg Home Improvements
South Windsor, CT-
Price Transparency
-
Free assessment
-
Timely Service
-
Good Customer Service
Services Offered
-
Custom Window Designs
-
Aluminum Window Frames
-
Residential Windows
-
Window Replacement
-
Fast Delivery
-
Bay Windows
Manchester Millwork
Manchester, CT-
Good Customer Service
-
Educational Website
Services Offered
-
Custom Window Designs
-
Window Replacement
-
Residential Windows
-
Fast Delivery
Calculate how much you can expect to pay for window installation and replacement in Portland, CT 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 Portland Saves You Money
Upgrading to energy-efficient windows can improve the comfort of your home and help you save on energy bills. Here are more ways upgrading your windows could help you:
- Protect your valuables from fading: When you upgrade to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will be protected from fading because of their ability to filter out damaging UV rays.
- Save money on energy bills: Since energy-efficient windows lower the amount of energy used to heat or cool your home, they can help you save about $403 annually on your energy bills in Portland.
- Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its real estate value, especially if your home is on the older side.
- Better temperature control in your home: Energy-efficient windows can lower how hard your heating system needs to work to heat your home.
Estimated Cost of Window Replacement in Portland
Let's take a look at the cost of installing new windows and the types of services offered by installers.
How Much Do New Windows Cost?
Generally, homeowners in Portland can expect that most replacement window installations will range from $250 to $1,200, with the most common installations sitting at about $600. These figures are based on specific characteristics of your installation, like material, size, the location of your home, type, number of windows and more.
With windows, efficiency is one of the most important factors for many homeowners. High efficiency windows may cost more off the bat, but by increasing the efficiency of your home — especially during the summer and winter — they can provide many years of energy savings. According to Energy Star, buying certified energy-efficient windows can save Portland homeowners $403+ each year after replacing single-pane windows.
We recommend requesting free quotes from several window installers to find the one that works best for you.
What Services do Window Installers Offer?
Generally, there are two types of window installation services companies provide: full-frame and pocket installations.
Full-frame installations involve replacing the entire window — the sill, frame, trim and all. These are typically done when you want a new style for your windows or when it has significant damage. Full-frame installations are more time-consuming and will increase overall costs. A pocket installation involves installing a new window within the existing frame. This means instead of tearing out the whole unit and reinstalling it, the installer will just put the replacement window (also called a retrofit or insert window) into the frame.
If you're still trying to decide which kind of installation you should get, you can consult with your installer and get their recommendation. The decision mostly depends on the age of your window frames and if there's any damage present.
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 Portland
In our search to find the most reliable, eco-friendly window installers in Portland, EcoWatch examined many companies before landing on these. Along with energy efficiency, we analyzed several window installers in Portland and assigned rankings using the following methodology:
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 kind of window is the best for energy efficiency?
Generally, double-pane windows are more efficient than single-pane windows and windows that do not open are more efficient than windows that do. To be sure you're getting the most energy-efficient windows, look for models that have the blue Energy Star certification — they're certified energy-efficient by the U.S. Department of Energy.
What services do window installation companies do?
Window installation professionals go to your home to remove your old windows and replace them with new ones. Some companies install products manufactured by other companies, whereas others install their own windows. The installer will also clean up after the installation is complete.
What time of year is the best time to replace my windows?
Although you can install windows any time of year, warmer weather is generally better for replacing windows. Additionally, it shouldn't be raining, because rain can make the installation harder.