20 Best Window Companies in Clinton, CT (2025 Reviews)
Looking to improve your house’s look? The best window replacement companies can help.
We analyzed all the top-rated window companies in Clinton and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
Although renewable energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your house’s energy efficiency can also have a big impact on home energy conservation. Potential leaks or drafts can reduce your home’s energy efficiency by up to 30%, according to the Department of Energy. In Clinton, that’s about $403 per year that you could save on your power bills after making the switch.
Installing upgraded, efficient windows on your house can help you save money each month on your electric bills — and you can help the environment as well.
Unlike other sites, EcoWatch ranks window companies based on energy efficiency while also factoring in cost, customer satisfaction and service area.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in Clinton
The EcoWatch team researched several window providers across Clinton to narrow our list down to the best ones. The companies in this article scored the best in our review categories, such as energy-efficient offerings, availability, local expertise, customer service, price and more.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World offers windows expertise in Clinton. Window World has been in the window industry for around 27 years.
Window World may be the company for you if you're interested in one that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsWindow World carries some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want 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 Clinton?Prices are 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. Getting a free quote on its website is the best way to get more accurate information.

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 offers the best availability in Clinton. Andersen has been in the window industry for around 27 years.
Andersen may be the company for you if you're interested in one that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen carries some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want 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 Clinton?Prices are not available on Andersen’s website because the cost of window replacement depends on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Getting a free quote on its website is the best way to get more accurate information.

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 Clinton. Aeroseal has been in the window industry for around 23 years.
Aeroseal may be the company for you if you're interested in one that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows carries some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want 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 Clinton?Prices are not available on Aeroseal’s website because the cost of window replacement depends 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
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 offers the best residential windows in Clinton. Window Nation has been in the window industry for around 16 years.
Window Nation may be the company for you if you're interested in one 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 carries some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want Energy Star windows when inquiring. 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 Clinton?Prices are not available on Window Nation’s website because the cost of window replacement depends 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. Getting a free quote on its website is the best way to get more accurate information.
We’ve recommended installers with shining reputations, but note that some national companies have independently owned locations in Clinton, so the quality of service may vary depending on your local crew. We have tried to stay unbiased and transparent by including pros and cons for every company we reviewed.
More Window Companies in Clinton
Renewal by Andersen - Branford
Branford, CTEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Double-Hung
Skylights
Window Replacement/Installation
Bay Windows
Glass Doors
Power Home Remodeling
Trumbull, CTFree assessment
Timely Service
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Nation
Wallingford, CTFree assessment
Price Transparency
Educational Website
Services Offered
Custom Window Designs
Energy-Efficient Options
Bay Windows
Double-Hung
Window Replacement/Installation
Glass Doors
Calvary Remodeling
Mystic, CTPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Paramount Gallery
West Hartford, CTFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Glass Doors
Custom Window Designs
Window Replacement/Installation
Energy-Efficient Options
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Energy-Efficient Options
Vinyl Frames
Window Replacement/Installation
Double-Hung
Window Depot USA of Southern CT
Trumbull, CTFree assessment
Good Customer Service
Price Transparency
Timely Service
Educational Website
Services Offered
Glass Doors
Vinyl Frames
Double-Hung
Triple Pane Glass
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Big Dawg Home Improvements
South Windsor, CTTimely Service
Price Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Skylights
Window Repair
Energy-Efficient Options
ZN Construction
Canton, CTFree assessment
Timely Service
Price Transparency
Educational Website
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Flawless Glass & Mirror LLC
Holbrook, NYCustomized glass options
Free assessment
Good Customer Service
Educational Website
Price Transparency
Owner-operated small business
Free in-home consultation
Services Offered
Glass Showers
Mirrors
Window Replacement/Installation
Budget Blinds of Enfield and Hartford
Somers, CTEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Custom Window Designs
Window Replacement/Installation
United Home Experts
Norwalk, CTEducational Website
Free assessment
Price Transparency
Good Customer Service
Services Offered
Fiberglass Frames
Window Replacement/Installation
Kubala Home Improvement
Ludlow, MAPrice Transparency
Educational Website
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Greenwich Windows Replacement
Greenwich, CTGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Double-Hung
Bay Windows
Bencar Building Systems LLC
Wallingford, CTGood Customer Service
Services Offered
Window Replacement/Installation
Advanced Window Systems LLC
Cromwell, CTEducational Website
Free assessment
Price Transparency
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
Glass Showers
Double-Hung
Bay Windows
Nu-Face Home Improvements
Berlin, CTPrice Transparency
Good Customer Service
Timely Service
Educational Website
Free assessment
Services Offered
Glass Showers
Double-Hung
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Smithtown Window Replacement and Doors
Smithtown, NYEducational Website
Price Transparency
Family-owned and operated
Good Customer Service
Weekend availability
Energy-efficient windows and doors
Free assessment
Services Offered
Glass Showers
Storm/Impact Windows
Fiberglass Frames
Energy-Efficient Options
Glass Doors
Triple Pane Glass
Double-Hung
Custom Window Designs
Vinyl Frames
Metal Frames
Tempered Glass
Window Repair
Window Replacement/Installation
Bay Windows
Wood Frames
Mr. Handyman of Huntington and Smithtown
East Northport, NYGood Customer Service
Free assessment
Timely Service
Educational Website
Price Transparency
Services Offered
Window Replacement/Installation
Window Repair
Bay Windows
Homestead Window Treatments
Huntington Station, NYSaturday availability
Good Customer Service
Online appointment scheduling
Educational Website
Price Transparency
Free assessment
Family-owned and operated
Services Offered
Window Replacement/Installation
Custom Window Designs
Calculate how much you can expect to pay for window installation and replacement in Clinton, 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 Clinton Saves You Money
Upgrading to energy-efficient windows can help improve the comfort of your home and help you save on electricity bills. Here are more details about how upgrading your windows could help you:
- Protect your investment: When you have an older home, your windows could also be outdated or leaky. Upgrading your windows is an important part of maintaining your property and its 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 due to their ability to filter out damaging UV rays.
- Save on power bills: Switching to energy-efficient windows lowers your energy bills by about 12% since you need less energy.
- Reduce your carbon footprint: You can reduce your indirect greenhouse gas emissions by about 12% after you install Energy Star certified windows. In Clinton, that’s about 147 pounds per year on average.
Estimated Cost of Window Replacement in Clinton
Each window installation company offers various services and has varying prices depending on a few factors.
How Much Do New Windows Cost?
Although the typical cost to replace one window is about $600, it can range from $200 to $1,200. But costs will vary significantly depending on the quality of your products, the current condition of your home, the number of windows you need and your location. Many window companies also offer door installations and other add-ons like coating, baths, shutters and more. Additional services will increase overall project costs.
Keep in mind that energy-efficient windows may come at a higher price tag, but Energy Star predicts the upgrade will save you between $101 and $583 a year when replacing single-pane windows and between $27 and $197 a year when replacing double-pane, clear glass windows. Your savings will vary depending on your local climate, energy rates and individual home characteristics.
Asking for free quotes from several installers is the best way to find out which one will work best for your budget.
What Services do Window Installers Offer?
In general, there are two types of window replacement services you can get: full-frame and pocket installations.
Full-frame installations require replacing the entire window — the sill, frame, trim and all. These are most common when you want to change the style of your window or when it has a great amount of rot or deterioration. Full-frame installations are more involved and will increase overall costs. Pocket installations are on the simpler end and won’t cost as much, as they entail simply replacing the window within its existing frame. But if the frame has any damage or deterioration, you may need a full-frame installation instead.
Your window installation company should be able to help you understand what’s best for your needs. In Clinton, the decision will mostly depend on how old your windows are and if there’s any damage. Wood can decay if it’s not maintained properly over the years, so it’s a good idea to have a professional check your frames and window sills.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
How We Choose the Best Window Installers in Clinton
The EcoWatch Reviews team differs from most reviewers since we’re examining these companies through a sustainability lens. We’ve evaluated the best window installation companies in Clinton primarily based on energy efficiency, as it’s what’s best for the environment and for you as a homeowner. Energy-efficient windows can cut your electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
Because this is a guide for Clinton, we gave more points to companies that cover the city. There are certainly other reputable providers that didn’t make our list because of the low odds that they would serve the average homeowner in Clinton.
Work Quality
When picking new windows, the quality and range of services often plays just as important of a role in overall efficiency and performance as the brand you choose. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed trends in recent online reviews to find the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction might be the factor we place the most value on, as it reflects the quality of services across nearly every category, including quality of parts, cost, quality of installation, professionalism, warranty and more.
Cost
Cheaper windows certainly don’t 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 points to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
Protecting your investment in new windows is important. That’s why window installation companies with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to Clinton’s climate, homeowners need to be wary of low efficiency, rot and water damage. We factored in local experience to reflect the ability of Clinton window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Clinton, CT Window Replacement FAQs
How much should window installation cost?
The national average cost to replace one window is around $600 but can range between $200 and $1,200, based on a variety of factors. The price is typically influenced by the type and material of the window, the size of the window and the location of your property. Also, remember that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.
What kind of window is the most energy-efficient?
Generally, double-pane windows will be more efficient than single-pane windows and windows that don’t open will be more efficient than windows that do. To be sure you’ll have the most energy-efficient windows, look for models that have the blue Energy Star certification attached to them — they’re certified energy-efficient by the U.S. Department of Energy.
What do window installation companies do?
Window installation companies cover the entire process — from replacing old windows with brand-new ones to cleaning up after the installation. In addition, some companies offer window manufacturing, customization and repairs.
How do you know it’s time to replace your windows?
Windows generally have a lifespan of around 20 to 30 years, but anytime you see damage on your windows, it’s a good idea to have an expert take a look at them to see if they need any repairs or replacements.