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Best Window Replacement Companies in Buffalo, NY

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Written By Max Peterson|Last Updated: April 18, 2024

You might be installing replacement windows to enhance your home's design, use less energy, or protect your home from the rain and gusty winds. Local contractors recognize that homeowners would rather not pay a pretty penny for window replacement in Buffalo. They work with cost-efficient materials that don't compromise on 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 Buffalo Window Installation Companies

By selecting one of these top companies for window replacement in Buffalo, you'll get the benefits of new windows in no time.

Buffalo residents can trust the This Old House Reviews Team to provide relevant, updated window installer recommendations. To identify the best providers, we consider these five elements:

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

Window World of Buffalo

Based on 262 customer reviews.

Services Offered

Bay WindowsGlass DoorsDouble-HungWindow Replacement/installationEnergy-Efficient OptionsVinyl Frames


  • Educational website
  • Free assessment
  • Price transparency
4444 Broadway, Depew, NY 716-656-0100 windowworldofbuffalo.com
Pella Windows & Doors of Buffalo Logo

Pella Windows & Doors of Buffalo

Based on 117 customer reviews.

Services Offered

Wood FramesDouble-HungWindow Replacement/installationGlass DoorsCustom Window Designs


  • Educational website
  • Free assessment
  • Price transparency
2410 Walden Ave, Buffalo, NY 716-681-2000 pellabranch.com
Comfort Windows & Doors Logo

Comfort Windows & Doors

Based on 347 customer reviews.

Services Offered

Custom Window DesignsEnergy-Efficient OptionsGlass DoorsWindow Replacement/installationBay WindowsWood FramesVinyl FramesGlass ShowersDouble-Hung


  • Educational website
  • Good customer service
  • Price transparency
560 Fillmore Ave, Tonawanda, NY 716-893-4663 comfortwindows.com
Big L Windows & Doors Logo

Big L Windows & Doors

Based on 135 customer reviews.

Services Offered

Glass DoorsBay WindowsWindow Replacement/installation


  • Timely service
  • Free assessment
  • Educational website
2727 William St, Cheektowaga, NY 716-895-8484 biglwindows.com
Stanek Windows Logo

Stanek Windows

Based on 64 customer reviews.

Services Offered

Energy-Efficient OptionsBay WindowsWindow Replacement/installationDouble-HungVinyl FramesGlass Doors


  • Free assessment
  • Price transparency
  • Educational website
2620 N America Dr, West Seneca, NY 716-608-3244 stanekwindows.com
Window Factory Outlet Logo

Window Factory Outlet

Based on 77 customer reviews.

Services Offered

Bay WindowsVinyl FramesDouble-HungGlass DoorsWindow Replacement/installation


  • Good customer service
  • Timely service
  • Price transparency
815 Smith St, Buffalo, NY 716-486-2000 windowfactoryoutlet.com
Express Windows Logo

Express Windows

Based on 219 customer reviews.

Services Offered

Glass DoorsWindow Replacement/installationVinyl Frames


  • Price transparency
  • Educational website
  • Free assessment
3495 Delaware Ave, Buffalo, NY 716-602-8500 expresswindowsinc.com
Braymiller Builders of WNY Inc. Logo

Braymiller Builders of WNY

Based on 551 customer reviews.

Services Offered

Bay WindowsGlass DoorsVinyl FramesDouble-HungWindow Replacement/installationGlass Showers


  • Free assessment
  • Educational website
  • Price transparency
207 Lake St, Hamburg, NY 716-646-5300 braymillerbuilders.com
MIRIS Building Supplies Logo

MIRIS Building Supplies

Based on 155 customer reviews.

Services Offered

Glass DoorsSkylightsWindow Replacement/installation


  • Price transparency
391 River Rd, North Tonawanda, NY 716-694-9069 mirisbuildingsupplies.com

More Local Window Companies

American Glass Block

User Reviews: 4.3/5 

300 Bailey Ave
Buffalo, NY 14210

Advance Glass

User Reviews: 4.3/5 

5585 Harris Hill Rd
Williamsville, NY 14221

Airtite Wholesale Building Materials

User Reviews: 4.4/5 

8645 Roll Rd
Clarence Center, NY 14032

Nexgen Windows & Doors LLC

User Reviews: 4.1/5 

301 Charlesgate Cir
East Amherst, NY 14051

Tomson Window

User Reviews: 4.3/5 

4829 Tomson Ave
Niagara Falls, NY 14304

Medina Windows

User Reviews: 4.6/5 

10708 Millers Rd
Lyndonville, NY 14098

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 Buffalo
Annual Energy Efficient Windows Savings:$368
Average Max Temp:54°F
Average Min Temp:40°F
Average Daily Sunlight:49%
Average Annual Snowfall:89.2"
Average Monthly Precipitation:3.42"

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 Buffalo

With Buffalo's robust local economy, you're sure to find a reliable window company that suits your values and preferences. As you contact companies, keep the following factors in mind:

Window Cost by Type

When you're shopping for new windows, it's crucial to remember that there's more to cost than just purchase price. You want a window with top-notch quality and durability. Choosing economy windows could actually increase your overall cost, due to their reduced lifespan and more intensive maintenance needs. The overall cost of your window replacement will rely on the specific materials, styles, and sizes you need. 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. It's wise to consult a trusted installer to determine your most suitable options.

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

Window TypesAverage Cost
Glass Block$43-$547

Window Material Cost

Window prices also vary based on material. Each option provides unique advantages 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 TypesAverage Cost

Other Window Replacement Costs

Your total cost for window replacement will also include warranty fees (if applicable), permit-related costs (if required), and labor. Be sure to discuss each of these aspects with a sales representative before committing to a window company.

Experience and Training

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

Licensing and Credentials

New York's state government doesn't issue contracting licenses for window installers, but this hasn't stopped local governments from intervening and establishing their own licenses. For example, to install windows in New York City, a company must earn a Home Improvement Contractor License by passing exams and ecological assessments.

Types of Windows Offered

The kind of window you desire should influence your company choice. Not every contractor will necessarily be familiar with the window styles you want. A company website will reveal more about the kinds of windows it specializes in, such as:

  • Awning
  • Bay
  • Bow
  • Casement
  • Crank-out
  • Custom
  • Double- or single-hung
  • Egress
  • Garden
  • Jalousie
  • Picture
  • Sliding
  • Skylight
  • Specialty
  • Storm
  • Transom
  • Vent
Finally, pay close attention to the materials that a company uses. Each frame material has a different energy efficiency level, price point and life span. A company will usually specify whether the windows they set up use fiberglass, composite, metal, wood, or vinyl.

Customer Feedback

Reading other customers' stories is an excellent way to screen window companies in your area. Read customer reviews on sites such as Google, Trustpilot, and Yelp. You can also view customer reviews and company ratings on the Better Business Bureau (BBB) website. Talk to people you know who have used the company you're interested in, and ask a representative for professional references.

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Frequently Asked Questions About Window Replacement in Buffalo

How could new windows help my energy efficiency?

Buffalo homeowners could save up to $370 annually by upgrading to efficient windows. They'll also lower their property's carbon dioxide emissions by 65 pounds per year.

According to the federal Department of Energy, up to a third of a house's HVAC usage is to compensate for the heat or cold entering through windows. Efficient windows help keep heat out in the summertime and retain heat in the wintertime, improving your comfort and furthering your dollar.

Does window replacement involve pulling permits?

Whether you need a building permit to replace your windows depends on your local building codes and regulations. Some areas require permits for window replacement projects, especially those involving structural changes or alterations to the window openings. We recommend you check with your local building department or contact a professional before undertaking any window replacement work.

Can I replace just my windows' glass and not their frames?

If you cracked your window's glass, you don't necessarily need to replace the whole thing. Often, you can simply swap out the shattered glass panel without having to remove the entire window frame. However, it's best to seek advice from a professional to figure out the right solution for your specific situation.

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