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Best Window Replacement Companies in Stamford, CT

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

Replacement windows can shield your home from leaks and drafts, increase its energy efficiency, and provide it with some additional aesthetic appeal. Local contractors recognize that homeowners would prefer not to pay a high price for window replacement in Stamford. They work with affordable materials that don't sacrifice durability.

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 Stamford Window Installation Companies

By working with one of these best companies for window replacement in Stamford, you'll reap the benefits of new windows in no time.

Stamford residents can trust the This Old House Reviews Team to provide relevant, updated window installer recommendations. To find out the best companies, we focus on these five factors:

  • Energy-efficiency guarantees
  • Customer reviews and recommendations
  • Services and warranties
  • Product quality
  • Professional experience and licensure

Window World Westchester Logo

Window World Westchester

Based on 48 customer reviews.

Services Offered

Bay Windows Sliding Glass Doors Double-Hung Window Install & Replacement


  • Educational website
  • Good customer service
  • Price transparency
134 Marbledale Rd, Tuckahoe, NY 914-750-4353 windowworldwestchester.com
MK Window Treatments Logo

MK Window Treatments

Based on 63 customer reviews.

Services Offered

Window Install & Replacement Aluminum Frames Window Repair


  • Good customer service
  • Free assessment
270 Mason St, Greenwich, CT 203-900-1500 mkwindowtreatments.com
Greenwich Windows Replacement Logo

Greenwich Windows Replacement

Based on 44 customer reviews.

Services Offered

Bay Windows Window Install & Replacement


  • Educational website
  • Price transparency
  • Free assessment
777 West Putnam Avenue, Greenwich, CT 203-424-3446 greenwichwr.com
Aesthetic Renovations Logo

Aesthetic Renovations

Based on 21 customer reviews.

Services Offered

Window Install & Replacement Window Repair


  • Good customer service
40 Village Green Box 469, Bedford, NY 914-707-0059 aestheticrenovations.com
Pella Windows & Doors of Norwalk Logo

Pella Windows & Doors of Norwalk

Based on 183 customer reviews.

Services Offered

Glass Doors Fiberglass Frames Double-Hung Pella Commercial Windows Storm Doors Sliding Glass Doors Window Install & Replacement Bay Windows Window Repair


  • Price transparency
  • Educational website
  • Free assessment
464 Main Ave, Norwalk, CT 203-846-9450 pellabranch.com
Windows By Toll Logo

Windows By Toll

Based on 63 customer reviews.

Services Offered

Window Install & Replacement Marvin Bay Windows Double-Hung Dormer Windows Andersen Glass Showers Window Repair


  • Educational website
  • Free assessment
  • Good customer service
226 Selleck St, Stamford, CT 203-404-0502 windowsbytoll.com
First Choice Windows & Remodeling Logo

First Choice Windows & Remodeling

Based on 29 customer reviews.

Services Offered

Window Install & Replacement Pella Marvin


  • Price transparency
  • Good customer service
  • Educational website
6 Oak St W, Greenwich, CT 203-987-3131 fcwindow.com
Affordable Glass & Mirror of Stamford,LLC Logo

Affordable Glass & Mirror of Stamford

Based on 21 customer reviews.

Services Offered

Glass Repair Mirrors Window Install & Replacement Window Repair Glass Showers Commercial Windows


16 Taff Ave, Stamford, CT 203-967-2013 affordableglassandmirror.com
Connecticut Glass & Mirror Logo

Connecticut Glass & Mirror

Based on 16 customer reviews.

Services Offered

Skylights Commercial Windows Sliding Glass Doors Window Install & Replacement Mirrors Glass Showers


  • Price transparency
  • Good customer service
  • Free assessment
100 Research Dr, Stamford, CT 203-327-5730 connecticutglassandmirror.net

More Local Window Companies

American Windows Plus Inc

User Reviews: 4.6/5 

169 mamaroneck ave 2fl # 11
White Plains, NY 10601

Westchester Window

User Reviews: 4.6/5 

51 Kensico Rd b
Thornwood, NY 10594

Glass Guys

User Reviews: 4.1/5 

4 Danbury Rd
Ridgefield, CT 06877

Artan Window Works | Window Repair

User Reviews: 4.7/5 

13 Glen Ln
Glen Head, NY 11545

Unified Home Remodeling

User Reviews: 4.2/5 

757 Central Park Ave
Scarsdale, NY 10583

Homestead Window Treatments

User Reviews: 4.6/5 

30 W Hills Rd
Huntington Station, NY 11746

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 Stamford
Annual Energy Efficient Windows Savings: $441
Average Max Temp: 58°F
Average Min Temp: 44°F
Average Daily Sunlight: 55%
Average Annual Snowfall: 35.0"
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 Stamford

With Stamford's large population, you're sure to find a reputable window company that matches your values and preferences. As you gather estimates, keep the following factors in mind:

Window Cost by Type

When it comes to replacing your windows, value is paramount. Each window you purchase should deliver top-notch durability at a fair price point. Although top-of-the-line windows may cost more upfront, they often yield better long-term value due to their increased lifespan. The material, size, and style of your new windows have the greatest impact on your final cost. Simple double-hung windows deliver great value with their straightforward style and simple mechanisms, while a custom-cut arch window in a master suite will cost more. If you're undecided, a window provider can help you determine which options are ideal for your home.

To help you form a rough estimate, this table shows the typical cost of the most common residential window types.

Window Types Average Cost
Arched $238-$1464
Awning $345-$961
Bay $795-$5899
Custom $353-$983
Casement $275-$1595
Double-hung $128-$830
Egress $235-$589
Glass Block $47-$596
Picture $207-$1529
Single-hung $93-$1573
Skylight $117-$1420
Sliding $270-$1376
Storm $55-$388
Transom $288-$603

Window Material Cost

Window prices also vary based on material. Each option offers different benefits depending on your climate and energy efficiency needs. Fiberglass and vinyl 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 Types Average Cost
Aluminum $55-$1573
Composite $568-$1276
Fiberglass $93-$795
Vinyl $191-$1769
Wood $284-$1595

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 take into account the cost of installation, warranties, and any other supplemental fees that your project may need.

Experience and Training

Select a provider that focuses on window repair and installation, and look for this information on its website:

  • How long it's been serving the Stamford area
  • Photo galleries of projects its crews completed
  • Private credentials attesting to its workmanship
The more experience a company has, the better its service and workmanship.

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 residences. 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 vital to find a company that focuses on installing the ones you want. Check 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
Also, check the kind of window framing materials a company works with. Each material has varying price points, life spans, and energy performance capabilities. Common materials include fiberglass, vinyl, composite, wood and aluminum.

Customer Feedback

Perhaps the best way to prescreen window companies for your job is to see what previous customers have said about them. Trustworthy sources for customer reviews include the BBB, Yelp, and Google Referrals can also help you in your company search. Ask each company you're interested in for a list of references, and talk to family and friends about who they use for window installations.

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Frequently Asked Questions About Window Replacement in Stamford

How could new windows help my energy efficiency?

In Stamford specifically, most homeowners using efficient windows lower their carbon emissions by 150 pounds each year. That amounts to $440 of annual savings.

The U.S. Department of Energy states that 25%–30% of a home's heating and cooling capacity is used to compensate for heat gain and heat loss through windows. By investing in new, more efficient windows, you can enhance your home's energy efficiency and minimize your electricity bills.

How frequently should I upgrade or replace my windows?

Windows don't last forever, and most vinyl models are constructed to serve your home for around two decades. Over time, weatherproofing materials weaken, framing shifts, and window coatings deteriorate. These changes result in condensation, air leaks, energy loss, and other expensive problems necessitating repair or replacement.

How do replacement windows differ from new construction windows?

New construction windows are specifically designed for fresh builds and significant renovation projects. Most, but not all, have a vinyl "nailing fin" that extends from the frame and secures the window to the house's sheathing. On the other hand, replacement windows (sometimes called "retrofit windows") don't have their own nailing fin. Instead, they're crafted to use the existing sheaths.

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