20 Best Window Companies in Killingly, CT (2023 Reviews)

If you're looking to upgrade to new windows, our list of the best window installation companies can help.

We analyzed all the top-rated window companies in Killingly and selected the best 20 based on:

  • Customer reviews
  • Window installation expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated September 15, 2023

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

A review of the best window installation companies in Killingly may not seem like the most captivating article on the EcoWatch site, but trust us, windows have a more direct impact on your life than you might realize. According to the Department of Energy, heat gained or lost through old or damaged windows could represent 25-30% of residential energy climate control costs.

That's also bad for the environment because the extra energy required by old windows increases your carbon footprint.

So if you're constructing a new home, renovating or changing out old windows in Killingly, you've found the best place to get started.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Killingly

The EcoWatch team assessed dozens of window companies in Killingly to find the top ones for our readers. The providers in this article passed our review standards for energy-efficient offerings as well as customer service, local expertise, price and beyond.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Quality of service will depend on your area

Window World offers windows expertise in Killingly. This provider has 27 years of experience in the window installation business, and it has established itself as one of the most respected companies in Killingly. Hundreds of positive reviews from customers online back the company's reputation.

You may want to consider opting for 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 Windows

Window World is an Energy Star partner and offers a variety of energy-efficient windows. 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 World representative when inquiring about services.

How much does Window World cost in Killingly?

Prices aren’t listed on Window World’s website, but 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 logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen provides the best availability in Killingly. This company has 27 years of experience in the windows industry, and it has become one of the most respected companies in Killingly.

It 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 Windows

Renewal by Andersen caters to eco-conscious consumers by providing energy-efficient window offerings. 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 Killingly?

Andersen does not detail 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. You can inquire about a free quote on its website for more information about pricing.

Aeroseal Windows logo
FAST QUOTE
as little as 30 seconds
Best for Businesses

Aeroseal Windows

★★★★★
BBB Rating: A+
Locations: Regional
Founded: 1999
Pros:
  • Pros icon Many years of experience
  • Pros icon Great industry reputation
  • Pros icon Low number of customer complaints
  • Pros icon Manufactures products in-house
  • Pros icon Custom Designs
Cons:
  • Pros icon No lifetime warranty
  • Pros icon 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 around 23 years of experience in the window replacement industry. Its reputation is backed by all the positive reviews on customer review websites.

It has established itself as a company that installs windows and doors at businesses across the Eastern U.S.

Energy Efficiency of Aeroseal Windows Windows

There are a wide variety of window types available from Aeroseal Windows, some of which are Energy Star products. 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 Killingly?

Prices aren’t available on Aeroseal’s website, but it provides high-quality windows at a competitive price point. You can ask for a free quote on its website for more information about the cost.

Window Nation logo
FAST QUOTE
as little as 30 seconds
Best for Residential Windows

Window Nation

★★★★★
BBB Rating: A
Locations: Regional
Founded: 2006
Pros:
  • Pros icon Award-winning company
  • Pros icon Manufactures products in-house
  • Pros icon Custom designs
  • Pros icon Wide variety of products and services
Cons:
  • Pros icon Installation not covered by warranty
  • Pros icon Limited service area

Window Nation offers the best residential windows in Killingly. This provider has 16 years of experience in the window installation business, and it has established itself as one of the most respected companies in Killingly. Hundreds of positive reviews from customers online back the company's reputation.

You may want to consider opting for Window Nation if you're looking for a installer that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.

Energy Efficiency of Window Nation Windows

Window Nation is an Energy Star partner and offers a variety of energy-efficient windows. 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 Killingly?

Prices aren’t listed 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. Getting a free quote on its website is the best way to get more accurate information.

We strive to remain unbiased and transparent by mentioning pros and cons for every installer. Additionally, any partnerships do not influence our rankings.

More Window Companies in Killingly

Renewal by Andersen of Rhode Island

Smithfield, RI
4.4
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Fast Delivery
  • Service icon Window Replacement
  • Service icon Bay Windows
  • Service icon Full-Service Installations
  • Service icon Residential Windows

Website: https://windowsrhodeisland.com/
Address: 10 Reservoir Rd, Smithfield, RI 02917
Phone: (401) 264-0052

Window World of Rhode Island

Warwick, RI
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Residential Windows
  • Service icon Window Replacement

Website: https://www.windowworldri.com/
Address: 380 Jefferson Blvd, Warwick, RI 02886
Phone: (401) 336-6815

Window Nation

Wallingford, CT
4.4
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Residential Windows
  • Service icon Stained Glass
  • Service icon Energy-Efficient Options
  • Service icon Sliding Glass

Website: https://www.windownation.com/hartford-ct-showroom/
Address: 1070 N Farms Rd Unit 1, Wallingford, CT 06492
Phone: (475) 253-0015

The Window Source RI

Smithfield, RI
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Sliding Glass
  • Service icon Double-Hung
  • Service icon Bay Windows

Website: http://www.windowsourceri.com/
Address: 127 Dean Ave, Smithfield, RI 02917
Phone: (401) 593-4210

QSPS Housing Solutions

Johnston, RI
4.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Showers
  • Service icon Double-Hung
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Window Replacement

Website: https://www.qspshousingsolutions.com/
Address: 1208 Atwood Ave, Johnston, RI 02919
Phone: (401) 230-9004

Krystal Glass & Door Co

Smithfield, RI
4.4
★★★★★
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Tempered Glass
  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Double-Hung
  • Service icon Fast Delivery
  • Service icon Commercial Windows
  • Service icon Aluminum Window Frames
  • Service icon Custom Window Designs
  • Service icon Glass Showers

Website: http://krystalglassri.com/
Address: 9 Rocky Hill Rd Unit B, Smithfield, RI 02917
Phone: (401) 231-1600

Rhode Island Remodeling

Cranston, RI
4.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Fast Delivery
  • Service icon Residential Windows

Website: http://riremodel.com/
Address: 130 Belvedere Dr, Cranston, RI 02920
Phone: (401) 487-3992

Pryde Remodeling

Southbridge, MA
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Fast Delivery
  • Service icon Residential Windows

Website: http://pryderemodeling.com/
Address: 19 Everett St B, Southbridge, MA 01550
Phone: (774) 221-6329

Home Services at The Home Depot

Coventry, RI
3.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Glass Showers
  • Service icon Fast Delivery
  • Service icon Stained Glass
  • Service icon Commercial Windows
  • Service icon Custom Window Designs
  • Service icon Window Replacement

Website: https://www.homedepot.com/l/Coventry/RI/Coventry/02816/4279/services
Address: 700 Centre of New England Blvd, Coventry, RI 02816
Phone: (401) 285-0601

Esler Companies

Smithfield, RI
3.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Residential Windows

Website: https://esler.com/
Address: 10 Reservoir Rd, Smithfield, RI 02917
Phone: (866) 442-3818

United Better Homes - Roofing, Solar & Windows

Central Falls, RI
4.4
★★★★★
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement
  • Service icon Full-Service Installations
  • Service icon Sliding Glass
  • Service icon Residential Windows
  • Service icon Bay Windows
  • Service icon Commercial Windows
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung

Website: https://www.unitedbetterhomes.com/
Address: 535 Pine St, Central Falls, RI 02863
Phone: (401) 274-0111

Creative Enclosures

Bozrah, CT
4.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Glass Showers
  • Service icon Residential Windows
  • Service icon Fast Delivery

Website: https://www.creativeenclosures.com/
Address: 56 Stockhouse Rd, Bozrah, CT 06334
Phone: (860) 886-7631

Christopher Home Improvement

Norwich, CT
4.2
★★★★★
  • Pros icon Timely Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Commercial Windows

Website: https://christopherimprovement.com/
Address: 16 A Winchester St, Norwich, CT 06360
Phone: (877) 334-4654

Rescom Exteriors, Inc

Auburn, MA
4.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Bay Windows
  • Service icon Glass Showers
  • Service icon Fast Delivery
  • Service icon Commercial Windows
  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Residential Windows

Website: https://www.iwantnewwindows.com/
Address: 714 Southbridge St, Auburn, MA 01501
Phone: (508) 832-5202

Custom Built Window Manufacturing

Warwick, RI
3.8
★★★★★
  • Pros icon Good Customer Service

Services Offered

  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Aluminum Window Frames
  • Service icon Glass Showers
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Window Replacement

Website: https://custombuiltri.com/
Address: 80 Meadow St, Warwick, RI 02886
Phone: (401) 738-3800

United Home Experts of New London County

Norwich, CT
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Commercial Windows
  • Service icon Custom Window Designs
  • Service icon Residential Windows

Website: https://unitedhomeexperts.com/norwich-ct-06360-siding-roofing-windows-doors/
Address: 66 Franklin St, Norwich, CT 06360
Phone: (607) 405-2048

Nescor

Cumberland, RI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Stained Glass
  • Service icon Window Replacement
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Residential Windows

Website: http://www.nescornow.com/
Address: 132 Mendon Rd unit 1, Cumberland, RI 02864
Phone: (888) 637-2671

Royal Thermal View Inc

MA, MA
3.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Window Replacement

Website: http://www.royalthermalview.com/
Address: Mendon, MA
Phone: (508) 473-3269

Columbia Glass Inc

Columbia, CT
3.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Tempered Glass
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Commercial Windows

Website: http://www.columbiaglassct.com/
Address: 127 CT-66, Columbia, CT 06237
Phone: (860) 228-8485

C. Langway and Sons Contractors

Millbury, MA
3.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Custom Window Designs

Website: http://clangwayandsons.com/
Address: 8 Farnsworth Ct, Millbury, MA 01527
Phone: (508) 254-5384
Killingly Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Killingly, CT using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

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 Killingly Saves You Money

There are quite a few benefits of switching to energy-efficient windows. A few reasons you may want to consider making the change are the following:

  • Better temperature control in your home: Energy-efficient windows can cut back on how hard your heating system needs to work to heat your home.
  • Protect your valuables: The low-emissivity coatings on many energy-efficient windows help prevent the fading of your floors, carpets and furniture by filtering out UV rays.
  • 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 real estate value.
  • Save money on electricity bills: Installing energy-efficient windows reduces your energy bills by about 12% since you use less energy.

Estimated Cost of Window Replacement in Killingly

Windows come in different purposes, shapes and styles, so costs and services will differ remarkably depending on your project. Below, we describe the typical cost and services that you'll find from window installation companies.

How Much Do New Windows Cost?

Even though the national average of replacing a single window is around $600, it can range anywhere from $200 to $1,200. These figures vary based on the specifics of your installation, including the location of your home, material, size, type, number of windows and more.

Keep in mind that energy-efficient windows may cost more, but Energy Star predicts the upgrade will save you between $101 and $583 per year when replacing single-pane windows and between $27 and $197 per year when replacing double-pane, clear glass windows. Your savings will vary depending on your local climate, energy rates and individual home characteristics.

The cost of your window installation will also vary depending on the type of material you choose for the frames. Wood windows are typically the most expensive, although it depends if they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be a bit more expensive than vinyl, but they are more efficient.

What Services do Window Installers Offer?

The first thing to ask yourself when planning to replace your windows is: Do you want a full-frame installation or a pocket installation?

Full-frame installations are necessary when you want a new style or your window has a lot of rot or deterioration. With this service, your installers will replace the complete window, including the frame, sill and trim. A pocket installation means replacing a window within the existing frame, which tends to be less expensive than a full-frame installation.

Your window installation company can help you figure out which type of installation you need.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

How We Choose the Best Window Installers in Killingly

In our hunt to make your home improvements easier and more eco-friendly in Killingly, the EcoWatch Reviews team examined many companies before landing on these. Along with energy efficiency, we analyzed several window installers in Killingly and assigned rankings using the following methodology:

Service Area

This one is self-explanatory, but we've chosen to highlight window installation companies that serve a wide variety of states and cities so you can find a quality window installation company near you.

Work Quality

When installing new windows, the quality and variety of services can often play just as important of a role in overall efficiency and performance as the type of window you get. We do give window installers higher marks if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.

Customer Reviews

We analyzed trends in recent customer feedback to determine the companies with the highest rates of customer satisfaction. Customer satisfaction might be the factor we place the most value on, as it reflects the quality of services across most other categories, including warranty, quality of parts, professionalism, quality of installation, cost and more.

Cost

Cheaper windows don't necessarily mean better windows, but we know many of our readers would like to keep costs as low as possible. When analyzing the prices of providers, we awarded higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.

Warranty

Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that give you lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Because of Killingly's climate, homeowners need to be wary of rot, low efficiency and water damage. We factored in local experience to reflect the ability of Killingly window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.

Killingly, CT Window Replacement FAQs

How much should window installation cost?

The national average cost of replacing a single window is around $600 but can range between $200 and $1,200, based on a variety of factors. The price is usually influenced by the type and material of the window, the location of your property and the size of the window. 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 are the different types of windows?

There are various kinds of windows you can get for your home, including casement windows, bay windows, awning windows, double-hung and single-hung windows, picture windows, transom windows and slider windows.

What do window installers do?

Window installers cover the entire process — from replacing your old windows with new ones to cleaning up after the installation. In addition, many companies offer window manufacturing, customization and repairs.

How long does it typically take to install windows?

Since the average installation time of a window is 30 minutes, around 16 windows can be installed during an 8-hour work day.

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