20 Best Window Companies in Peters, PA (2024 Reviews)

When it’s time to upgrade your windows, our list of the best window installation companies can help you find the provider for you.

We analyzed all the top-rated window companies in Peters 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 June 24, 2024

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.

Although eco-friendly energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your home’s efficiency can also have a considerable impact on home energy conservation. Drafty or leaky windows can decrease your home’s energy efficiency by up to 30%, according to the Department of Energy. In Peters, that’s about $313 a year that you could save on your electricity bills by making the switch.

Installing efficient windows on your property can help you save money every month on your energy bills — and you can help the environment, too.

Efficient windows are particularly important in Peters, where the temperature varies throughout the year. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $313 a year.

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Save 35% + $100 off per window!
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

Best Window Installation & Replacement Companies in Peters

The EcoWatch Reviews team researched dozens of installers in Peters to find the top window installation companies for our readers. We assessed the companies based on their energy-efficient offerings, coverage area, customer service, price, local experience and more.

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 is the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has about 27 years of experience in the industry, and it currently serves 200 locations nationwide.

It has established itself as a company 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 offers 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 Peters?

Window World doesn’t have any cost information available on its website, but it's known for offering some of the most affordable window installations around. The best way to know for sure is to ask for a free quote from the company.

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 is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the industry, and it currently serves nearly every state except Mississippi and West Virginia.

It has established itself as a company 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 Windows

Renewal by Andersen offers 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 Peters?

Andersen doesn’t have any cost information available 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. The best way to know for sure is to ask for a free quote from the company.

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 about 23 years of experience in the industry, and it currently serves 13 states and Washington D.C.

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

Aeroseal Windows offers 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 Peters?

Aeroseal doesn’t have any cost information available on its website, but it provides high-quality windows at a competitive price point. The best way to know for sure is to ask for a free quote from the company.

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 is a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has about 16 years of experience in the industry, and it currently serves residents within 75 miles of its showrooms, which are in 13 states.

It has established itself as a company 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 offers 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 Peters?

Window Nation doesn’t have any cost information available on its 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. The best way to know for sure is to ask for a free quote from the company.

We’ve recommended companies with shining reputations, but keep in mind these are national companies, so your service may differ depending on your local crew. We have tried to stay unbiased and transparent by mentioning pros and cons for every company we reviewed.

More Window Companies in Peters

Power Home Remodeling

Coraopolis, PA
4.8
★★★★★
  • Pros icon Full-home remodeling
  • Pros icon Energy-efficient
  • Pros icon customer_service
  • Pros icon Lifetime labor warranty

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options

Website: https://powerhrg.com/
Address: 1325 Cherrington Pkwy Suite 300, Coraopolis, PA 15108
Phone: (484) 483-6216

Window Nation

Monroeville, PA
4.7
★★★★★
  • Pros icon price_transparency
  • Pros icon free_inspection
  • Pros icon ed_content
  • Pros icon award_winning
  • Pros icon customer_service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames
  • Service icon Energy-Efficient Options
  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Custom Window Designs
  • Service icon Double-Hung

Website: https://www.windownation.com/replacement-windows-pittsburgh/
Address: 9001 Rico Dr, Monroeville, PA 15146
Phone: (412) 357-2760

"ALL-NU" Windows

Oakdale, PA
5.0
★★★★★
  • Pros icon price_transparency
  • Pros icon Family-owned and operated
  • Pros icon Meet or beat pricing policy
  • Pros icon Financing options available
  • Pros icon ed_content

Services Offered

  • Service icon Window Replacement/Installation

Website: http://allnuwindows.net/
Address: 1012 Franklin St, Oakdale, PA 15071
Phone: (412) 279-1717

Renewal by Andersen of Greater Pittsburgh

Canonsburg, PA
4.9
★★★★★
  • Pros icon free_inspection
  • Pros icon Free in-home consultation
  • Pros icon ed_content
  • Pros icon price_transparency
  • Pros icon Custom window designs
  • Pros icon award_winning
  • Pros icon Affordable financing options
  • Pros icon customer_service

Services Offered

  • Service icon Glass Doors
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Skylights
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows

Website: https://www.renewalbyandersen.com/window-company/086-pittsburgh-pa/about-us
Address: 3528 Washington Rd, Canonsburg, PA 15317
Phone: (724) 941-1873

Metropolitan Window Company

Pittsburgh, PA
4.9
★★★★★
  • Pros icon award_winning
  • Pros icon Financing options available
  • Pros icon ed_content
  • Pros icon free_inspection
  • Pros icon High performance
  • Pros icon price_transparency
  • Pros icon customer_service
  • Pros icon Variety of styles and materials

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Wood Frames
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Glass Doors
  • Service icon Double-Hung
  • Service icon Fiberglass Frames

Website: https://www.metropolitanwindows.com/
Address: 4672 Clairton Blvd, Pittsburgh, PA 15236
Phone: (412) 655-8411

Windows Pittsburgh

Pittsburgh, PA
4.9
★★★★★
  • Pros icon price_transparency
  • Pros icon Full-service window replacement
  • Pros icon free_inspection
  • Pros icon customer_service
  • Pros icon Financing options available
  • Pros icon ed_content
  • Pros icon Custom window designs

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Energy-Efficient Options
  • Service icon Glass Doors
  • Service icon Double-Hung
  • Service icon Vinyl Frames

Website: http://www.windowspittsburgh.com/
Address: A Corporate office Appointment Required, 220 Shady Knoll Dr Suite 2, Pittsburgh, PA 15220
Phone: (412) 279-1112

Legacy Remodeling

Pittsburgh, PA
4.8
★★★★★
  • Pros icon ed_content
  • Pros icon free_inspection
  • Pros icon price_transparency
  • Pros icon customer_service
  • Pros icon award_winning

Services Offered

  • Service icon Glass Showers
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Wood Frames
  • Service icon Energy-Efficient Options

Website: http://www.legacyremodeling.com/
Address: 3090 W Liberty Ave, Pittsburgh, PA 15216
Phone: (724) 573-8118

Mr. Handyman of Northern Pittsburgh, South Hills, Moon

Pittsburgh, PA
4.8
★★★★★
  • Pros icon ed_content
  • Pros icon customer_service
  • Pros icon Family-owned and operated
  • Pros icon free_inspection
  • Pros icon Quality workmanship guarantee
  • Pros icon price_transparency
  • Pros icon Full-service installation
  • Pros icon timeliness

Services Offered

  • Service icon Window Replacement/Installation

Website: https://www.mrhandyman.com/northern-pittsburgh/
Address: 1511 Parkway View Dr Building 15, Pittsburgh, PA 15205
Phone: (724) 923-4377

Joyce Windows, Sunrooms & Baths - Pittsburgh

Pittsburgh, PA
4.5
★★★★★
  • Pros icon ed_content
  • Pros icon customer_service
  • Pros icon price_transparency
  • Pros icon free_inspection
  • Pros icon award_winning

Services Offered

  • Service icon Bay Windows
  • Service icon Glass Doors
  • Service icon Double-Hung
  • Service icon Energy-Efficient Options
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Glass Showers

Website: https://joycefactorydirect.com/
Address: 4583 Campbells Run Rd, Pittsburgh, PA 15205
Phone: (412) 538-5194

Specialty Window & Door

West Homestead, PA
5.0
★★★★★
  • Pros icon ed_content
  • Pros icon Locally owned and operated
  • Pros icon price_transparency
  • Pros icon free_inspection
  • Pros icon Free in-person consultation
  • Pros icon Variety of styles and materials
  • Pros icon customer_service

Services Offered

  • Service icon Bay Windows
  • Service icon Energy-Efficient Options
  • Service icon Glass Doors
  • Service icon Double-Hung
  • Service icon Custom Window Designs
  • Service icon Window Replacement/Installation

Website: http://specialtywindowanddoor.com/
Address: 1206 Breezewood Dr, West Homestead, PA 15120
Phone: (412) 462-7375

Allegheny Millwork & Lumber

Pittsburgh, PA
4.8
★★★★★
  • Pros icon ed_content
  • Pros icon customer_service
  • Pros icon price_transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Skylights
  • Service icon Energy-Efficient Options
  • Service icon Glass Doors

Website: http://www.alleghenymillworklumber.com/
Address: 1001 Muriel St, Pittsburgh, PA 15203
Phone: (412) 431-4224

Universal Windows Direct of Pittsburgh

Pittsburgh, PA
4.6
★★★★★
  • Pros icon award_winning
  • Pros icon price_transparency
  • Pros icon Custom window designs
  • Pros icon Financing options available
  • Pros icon ed_content
  • Pros icon free_inspection
  • Pros icon customer_service
  • Pros icon Exterior remodeling

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Vinyl Frames
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: https://www.universalwindowsdirect.com/pittsburgh
Address: 611 Parkway View Dr Unit 6, Pittsburgh, PA 15205
Phone: (412) 222-5200

Window World of Pittsburgh

Pittsburgh, PA
4.4
★★★★★
  • Pros icon ed_content
  • Pros icon charitable_giving
  • Pros icon free_inspection
  • Pros icon Industry-leading products
  • Pros icon customer_service
  • Pros icon Lifetime warranty
  • Pros icon timeliness
  • Pros icon Made in America
  • Pros icon price_transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Glass Doors
  • Service icon Custom Window Designs
  • Service icon Double-Hung

Website: https://www.windowworldpittsburgh.com/
Address: 4700 Campbells Run Rd, Pittsburgh, PA 15205
Phone: (412) 787-6000

Window Installation Specialists

Pittsburgh, PA
4.5
★★★★★
  • Pros icon customer_service
  • Pros icon free_inspection
  • Pros icon award_winning
  • Pros icon ed_content
  • Pros icon price_transparency

Services Offered

  • Service icon Vinyl Frames
  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Fiberglass Frames
  • Service icon Window Replacement/Installation
  • Service icon Wood Frames
  • Service icon Custom Window Designs

Website: https://windowinstallationpittsburgh.com/
Address: 3945 Forbes Ave #462, Pittsburgh, PA 15213
Phone: (724) 446-0275

HomePro Remodelers

Finleyville, PA
3.2
★★★★★
  • Pros icon price_transparency
  • Pros icon free_inspection
  • Pros icon customer_service

Services Offered

  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation

Website: http://www.homeproremodelers.com/
Address: 3500 Extension Ave, Finleyville, PA 15332
Phone: (724) 782-0485

American Window Industries Inc.

Pittsburgh, PA
4.8
★★★★★
  • Pros icon ed_content
  • Pros icon price_transparency
  • Pros icon customer_service

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.americanwindowpittsburgh.com/
Address: 106 Rockwood Ave, Pittsburgh, PA 15221
Phone: (412) 823-2320

Pittsburgh's Best Remodeling Contractors - Honest Renovators

Pittsburgh, PA
4.4
★★★★★
  • Pros icon customer_service
  • Pros icon free_inspection
  • Pros icon ed_content
  • Pros icon price_transparency

Services Offered

  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation

Website: http://honestrenovators.com/
Address: 5424 Walnut St 2nd Floor, Pittsburgh, PA 15232
Phone: (412) 212-6534

Angelo Associates Inc

Pittsburgh, PA
3.0
★★★★★
  • Pros icon customer_service
  • Pros icon price_transparency
  • Pros icon ed_content
  • Pros icon free_inspection

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.angeloassociates.com/
Address: 1125 Forest Ave, Pittsburgh, PA 15236
Phone: (412) 655-3430

Belle Vernon Entrance Door & Window Co.

Belle Vernon, PA
4.5
★★★★★
  • Pros icon free_inspection
  • Pros icon ed_content
  • Pros icon price_transparency
  • Pros icon customer_service

Services Offered

  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Custom Window Designs
  • Service icon Glass Doors

Website: http://www.bvdoor.com/
Address: 1119 Broad Ave, Belle Vernon, PA 15012
Phone: (724) 929-6001

Stanek Windows

Pittsburgh, PA
2.9
★★★★★
  • Pros icon customer_service
  • Pros icon price_transparency
  • Pros icon free_inspection
  • Pros icon ed_content

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames
  • Service icon Glass Doors
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: https://www.stanekwindows.com/
Address: 4777 Streets Run Rd, Pittsburgh, PA 15236
Phone: (412) 567-7717
Peters Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Peters, PA 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 Peters Saves You Money

Switching to energy-efficient windows can help improve the comfort of your home and help you save on electricity bills. Here are more ways upgrading your windows could benefit you:

  • Decrease your carbon footprint: Reducing the amount of energy you use also lowers your carbon emissions. You could reduce it by about 467 pounds.
  • Save on electricity bills: The Department of Energy estimates that heat gained or lost through windows accounts for about 25-30% of energy use in your home. Switching to energy-efficient windows can help decrease that number, which helps you save more on your bills.
  • Protect your investment: When your home is on the older side, your windows could also be outdated or damaged. Upgrading your windows is an important part of maintaining your property and its value.
  • Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which filter out harmful UV rays, reducing fading of your furniture, carpet and other valuables.

Estimated Cost of Window Replacement in Peters

Let’s take a look at the cost of installing new windows and the kinds of services offered by installers.

How Much Do New Windows Cost?

Even though the average cost of installing a single window is about $600, it can range anywhere from $200 to $1,200. How much it will cost varies based on several factors, including number of windows, size, material, type, the location of your home and more.

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

The cost of your window installation will also vary based on the kind of window material you choose for the frames. Wood windows are generally the most expensive, although it depends on whether they are 100% 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 step of a window installation is to figure out whether you want a full-frame or pocket installation.

Full-frame installations require replacing the whole window — the sill, frame, trim and all. These are most common when you want a different style for your windows or when it has significant rot or deterioration. Full-frame installations require more time and labor and will increase overall costs. Pocket installations are simpler and won’t carry as large a bill because they entail merely replacing the window within its existing frame. But if the frame has any damage, you may have to get a full-frame installation instead.

Your window replacement company will be able to help you figure out what’s best for your needs. In Peters, the decision will mostly depend on how old your windows are and if there’s any moisture damage. Wood can decay if it’s not maintained properly over the years, so it’s a good idea to have a professional evaluate your frames and window sills.

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Save 35% + $100 off per window!
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

How We Choose the Best Window Installers in Peters

EcoWatch reviews are different from most reviews because we look at these companies through a sustainability lens. We’ve evaluated the best window installation companies in Peters mainly based on their energy efficient offerings, as it’s the most sustainable option and the best one for homeowners. Energy-efficient windows can reduce your electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:

Service Area

This one is pretty self-explanatory, but we’ve chosen to highlight window installation companies that serve Peters so you can find the right window installation company near you.

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 give window installers higher marks if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.

Customer Reviews

Customer feedback is another super important review factor. If most customers don’t have positive things to say about their service from a certain company, it won’t be featured on EcoWatch.

Cost

This one is a give-and-take: similar to other services, cheap window installation companies may not provide the most quality service. Still, we want to make sure we’re highlighting companies that offer a spectrum of price and financing options so they’re accessible to most homeowners.

Warranty

As discussed, windows are a hefty investment, so you’ll want to make sure that investment is protected. Window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have a proven track record in the industry. Window installation companies that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.

Peters, PA Window Replacement FAQs

What is the typical cost to replace windows?

The national average cost of replacing a single window is about $600 but can range between $200 and $1,200, based on several factors. The price is typically dependent on the size of the window, the type and material of the window and the location of your property. Also, remember that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.

What are the most common types of replacement windows?

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

Do you really have to use a window installation company?

Unless you have home repair skills and have the time to replace your own windows, we recommend hiring a professional. The window installation process is quite involved and can take anywhere from four to six hours for one window. Although it’s tempting to try to save money by doing it yourself, hiring a company is a faster, more efficient and much safer option.

When is it time to replace your windows?

Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, they probably need to be replaced. Other than that, if your windows have damage anywhere on them, or they have become difficult to open or close, they may be in need of replacement.