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Best Window Replacement Companies in Danbury, CT

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Written By Max Peterson|Last Updated: February 05, 2024

Replacement windows can defend your home from water damage, enhance its energy efficiency, and provide it with extra charm. If your windows are aging or damaged, it's probably time to install new ones. Hiring a professional window installer will help you get the most satisfactory results and help you prevent costly mistakes from trying to complete the job yourself the job yourself.

Top Pick
  • Full-service installation
  • Large window selection
  • Nearly 30 years of experience
Best Financing
  • Full-service installation
  • In-house, U.S.-made products
  • More than 70 years of experience
Most Customizable
  • Full-service remodeling
  • 96% satisfaction rate
  • More than 30 years of experience

Top 10 Danbury Window Installation Companies

We recommend working with one of these best companies for your window replacement in Danbury.

Danbury residents can trust the This Old House Reviews Team to provide timely, updated window installer recommendations. To determine the best installers, we emphasize these five traits:

  • Professional experience and licensure
  • Energy-efficiency guarantees
  • Product quality
  • Customer reviews and recommendations
  • Services and warranties
Window World of the Hudson Valley Logo

Window World of the Hudson Valley

Based on 44 customer reviews.

Services Offered

Vinyl FramesWindow Replacement/installationDouble-HungEnergy-Efficient OptionsBay WindowsGlass Doors


  • Free assessment
  • Price transparency
1315 Us-9 #201, Wappingers Falls, NY 845-595-8200 windowworldhudsonvalley.com
Glass Guys Logo

Glass Guys

Based on 16 customer reviews.

Services Offered

Glass ShowersMirrorsWindow Replacement/installationEnergy-Efficient Options


  • Price transparency
4 Danbury Rd, Ridgefield, CT 203-431-7022 glass-guys.com
Window Depot USA of Southern CT Logo

Window Depot USA of Southern CT

Based on 40 customer reviews.

Services Offered

Double-HungBay WindowsEnergy-Efficient OptionsWindow Replacement/installationGlass DoorsTriple Pane GlassVinyl Frames


  • Good customer service
  • Educational website
  • Price transparency
5726 Main St Ste 2a, Trumbull, CT 203-309-6027 windowdepotsouthernct.com
HPM Craftsmen Logo

HPM Craftsmen

Based on 71 customer reviews.

Services Offered

Window Replacement/installation


  • Educational website
  • Price transparency
  • Good customer service
5 Milltown Rd Suite A, Holmes, NY 845-878-3004 hpmcraftsmen.com
Aesthetic Renovations Logo

Aesthetic Renovations

Based on 22 customer reviews.

Services Offered

Window Replacement/installationWindow Repair


  • Good customer service
40 Village Green Box 469, Bedford, NY 914-707-0059 aestheticrenovations.com
Bert Falsetti's Home Improvement LLC Logo

Bert Falsetti's Home Improvement

Based on 48 customer reviews.

Services Offered

Window Replacement/installationDouble-HungVinyl FramesEnergy-Efficient Options


  • Good customer service
  • Timely service
  • Price transparency
56 Woodfield Dr, Shelton, CT 203-258-5177 bertfalsettillc.wix.com
Pella Windows & Doors of Norwalk Logo

Pella Windows & Doors of Norwalk

Based on 193 customer reviews.

Services Offered

Bay WindowsWindow Replacement/installationDouble-HungGlass Doors


  • Good customer service
  • Price transparency
  • Free assessment
464 Main Ave, Norwalk, CT 203-846-9450 pellabranch.com
Jilco Window Corp. Logo

Jilco Window Corp.

Based on 69 customer reviews.

Services Offered

Energy-Efficient OptionsGlass DoorsWindow Replacement/installationSkylightsVinyl Frames


  • Good customer service
  • Price transparency
135 Mahopac Ave, Granite Springs, NY 914-248-6100 jilcowindow.com
Town & Country Glass Shop llc | Custom Shower Door & Window Supplier Logo

Town & Country Glass Shop llc | Custom Shower Door & Window Supplier

Based on 22 customer reviews.

Services Offered

MirrorsWindow Replacement/installationGlass Showers


  • Free assessment
  • Educational website
  • Good customer service
244 Main St N, Woodbury, CT 203-263-4527 townandcountryglassshop.com

More Local Window Companies

Santos Construction Group

User Reviews: 4.7/5 

542 Honeyspot Rd
Stratford, CT 06615

Naugatuck Window & Glass

User Reviews: 4.5/5 

253 Prospect St
Naugatuck, CT 06770

Putnam Windows Inc.

User Reviews: 4.6/5 

2560 US-9
Cold Spring, NY 10516

Connecticut Glass & Mirror

User Reviews: 4.1/5 

100 Research Dr
Stamford, CT 06906

Eastern Glass & Shower Door

User Reviews: 4.4/5 

940 Boston Post Rd
Milford, CT 06460

Westchester Window

User Reviews: 4.6/5 

51 Kensico Rd b
Thornwood, NY 10594

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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Facts about Danbury
Annual Energy Efficient Windows Savings:$441
Average Max Temp:58°F
Average Min Temp:44°F
Average Daily Sunlight:55%
Average Annual Snowfall:47"
Average Monthly Precipitation:4.18"

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

How To Choose a Window Company in Danbury

It's important to find a window company that meets your specific values, needs, and preferences. Consider the following areas during your hunt:

Window Cost by Type

When it comes to upgrading your windows, value is paramount. Each window you purchase should provide unparalleled durability at a fair price point. Although high-quality windows may come with a higher initial price tag, they often provide better long-term value due to their extended lifespan. The total cost of your window replacement will rely on the specific materials, sizes, and styles you need. Transom windows are inexpensive with their simple size and straightforward form factor, while new skylights cost more to prepare for and install. An installer can guide you through choosing the solutions that fit your preferences.

This table shows average prices for various window types to give you an idea of what to expect.

Window TypesAverage Cost
Glass Block$47-$596

Window Material Cost

Window prices also vary based on material. Each option gives you unique advantages depending on your climate and energy-saving goals. Vinyl and fiberglass are readily-available materials, so they tend to cost less. Likewise, aluminum and composites look sleek and stay strong against the elements, so they tend to cost more.

Window TypesAverage Cost

Other Window Replacement Costs

Your contractor will factor the price for your windows and the value of their services into its total estimate. Make sure to assess the cost of labor, guarantees, and any other additional costs that your project may require.

Experience and Training

The longer a window company has been operating, the better its workmanship will likely be. Talk with a company representative to learn more about its experience, public and private credentials, and guarantees. Company websites often keep photo galleries where you can see previous work technicians have done.

Licensing and Credentials

While Connecticut doesn't require contractors to carry licenses, they must still register with the state's Department of Consumer Protection (DCP), and there are still restrictions on what jobs they can perform. Most residential window installers are categorized as "minor contractors" and can only work on single and multi-family dwellings. If a company performs glasswork, it must have a Glazier license from the DCP.

Types of Windows Offered

There are several replacement window types you can choose from, and it's essential to find a company that is experienced with the ones you want. Browse a company's website and reviews for any of these types:

  • Awning
  • Bay
  • Bow
  • Casement
  • Crank-out
  • Custom
  • Double- or single-hung
  • Egress
  • Garden
  • Jalousie
  • Picture
  • Sliding
  • Skylight
  • Specialty
  • Storm
  • Transom
  • Vent
Equally important to your desired windows' shape is their framing. Ask your window company if it offers the frame material you want, such as aluminum, wood, vinyl, fiberglass, or composite.

Customer Feedback

One of the greatest ways to screen a company is to see what other customers have written about their experiences. You can find customer reviews on websites like Yelp, the BBB, Google, and Trustpilot. Speak with people you know who have used the company you'd like to hire, and ask a representative for professional references.

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Frequently Asked Questions About Window Replacement in Danbury

Why should I hire a professional to install or replace my windows?

Replacing your windows is a substantial investment that greatly impacts your home's comfort and energy efficiency. Hiring a reputable window contractor to manage your project ensures your windows will fit correctly, perform optimally, and be properly sealed. Companies also typically include a warranty that addresses required maintenance and most future repairs.

How can I fix a rotting or molding window frame?

A molding or rotting window frame indicates a moisture issue. You might not have to replace the entire window. Instead, a simple framing job could do. It's recommended to consult a window expert to ensure a proper seal.

What are some important metrics to know when I shop for replacement windows?

One of the first metrics you'll see when looking at a replacement window is its U-factor. The lower this number, the better the window is at blocking extreme heat and cold from entering your home. Other numbers to consider include:
  • "visible transmittance," which indicates how much light can enter through the window
  • "solar heat gain coefficient," which measures how much UV light the window absorbs and releases as heat
  • "Condensation resistance," which measures how well a window can resist moisture (the higher the number, the better)
  • "Air leakage," which measures how easy it is for air drafts to occur (the lower the number, the better)

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

More Window Resources

National Windows Company Ranking Methodology


Energy Star