25 Best Window Replacement Companies in Mayville, WI (2023 Reviews)
Window Companies Near Me

When the time comes to upgrade your windows, our list of the top window installation companies can help you find the right provider for you.

We analyzed all the top window installers in Mayville and selected the top 25 based on:

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

By EcoWatch Local Advisors

Updated May 04, 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 Mayville may not seem like the most captivating article on EcoWatch, but trust us, windows impact your life more than you might realize. When it's the middle of winter, your old and drafty windows could be making your home more difficult to heat and costing you more in power bills.

That's not great for either your wallet or the environment, but one of the top window installation companies can help with that.

As windows have such a large impact on your home, picking the right company for you is a big choice to make. That's why the EcoWatch team has made this list of the top window installation companies, so you can make an informed decision more easily.

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Award-winning company
  • No lifetime warranty

Best Affordability

Window World

★★★★★
4.5

  • Lifetime warranty
  • Large serice area
  • Great industry reputation
  • Quality of service will depend on your area

Best Window Replacement Companies in Mayville

The EcoWatch Reviews team assessed dozens of installers that service the Mayville area to find the top window installation companies by our standards. The companies mentioned in this article scored best in our review categories, such as energy-efficient offerings, price, local expertise, availability, customer service and more.

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 Member of US Green Building Council
  • Pros icon Award-winning company
Cons:
  • Pros icon No lifetime warranty

Renewal by Andersen offers the best availability in Mayville. Andersen has been in the window business for about 27 years. Its reputation is backed by hundreds of positive reviews from customers online.

You may want to consider choosing Andersen if you're interested in 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 is an Energy Star partner with 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 Andersen representative when inquiring about services.

How much does Renewal by Andersen cost in Mayville?

Andersen does not outline 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. If you'd like to know for sure, you can get a quote on the company's website.

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

Window World

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

Window World provides windows expertise in Mayville. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has around 27 years of experience in the window replacement industry. Its reputation is backed by hundreds of positive reviews on customer review websites.

You may want to consider going with 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's commitment to sustainability can be seen in its energy-efficient window offerings. 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 Mayville?

Window World doesn't have any cost information displayed on its website, but it's known for offering some of the most affordable window installations around. If you'd like more accurate information, you can receive a quote on the company's website.

We've recommended installers with good reputations, but bear in mind that some national companies have independently owned locations in Mayville, so the quality of service may vary depending on your local crew. We have tried to stay unbiased and transparent by including pros and cons for each company we reviewed.

More Window Replacement Companies in Mayville

Pella Windows & Doors of Brookfield

Brookfield, WI
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Award-Winning
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

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

Website: http://pella.com/
Address: 19030 W Bluemound Rd, Brookfield, WI 53045
Phone: (262) 783-6600

The Glass Guru

Sheboygan, WI
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

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

Website: https://theglassguru.com/locations/sheboygen-wi/
Address: 3325 Behrens Pkwy, Sheboygan, WI 53081
Phone: (920) 332-5227

Window World of Southeastern Wisconsin

10707 Maple Rd Stop 2, WI
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Award-Winning
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Timely Service

Services Offered

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

Website: https://www.windowworldofsoutheasternwi.com/
Address: W188 N, 10707 Maple Rd Stop 2, Germantown, WI 53022
Phone: (262) 703-9500

TightSeal Exteriors & Baths

New Berlin, WI
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Timely Service

Services Offered

  • Service icon Glass Showers
  • Service icon Bay Windows
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Double-Hung

Website: https://tightsealexteriors.com/
Address: 16227 W Ryerson Rd, New Berlin, WI 53151
Phone: (414) 895-4871

Window World of Fond du Lac

Fond du Lac, WI
4.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Award-Winning
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

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

Website: https://www.windowworldfonddulac.com/
Address: 235 Morris St, Fond du Lac, WI 54935
Phone: (920) 923-4189

Mad City Windows & Baths

New Berlin, WI
4.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Award-Winning
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Glass Showers
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Double-Hung

Website: https://www.madcitywindows.com/
Address: 17044 W Victor Rd, New Berlin, WI 53151
Phone: (262) 444-5744

Budget Blinds of Lake Country & Washington County

Hartland, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

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

Website: https://www.budgetblinds.com/WashingtonCounty/
Address: 1190 Richards Rd UNIT 6, Hartland, WI 53029
Phone: (262) 309-6710

Total Glass And Paint

Hartford, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Showers
  • Service icon Custom Window Designs
  • Service icon Full-Service Installations
  • Service icon Stained Glass
  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Commercial Windows

Website: http://totalglassservice.net/
Address: 841 Grand Ave, Hartford, WI 53027
Phone: (262) 673-4090

123 Exteriors

Waukesha, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Award-Winning
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Custom Window Designs
  • Service icon Full-Service Installations
  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Commercial Windows

Website: https://www.123exteriors.com/roofing-siding-contractor-milwaukee
Address: 2110 Pewaukee Rd Suite 110A, Waukesha, WI 53188
Phone: (262) 347-4599

Bob Lurie Glass Corp

Milwaukee, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Showers
  • Service icon Bay Windows
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Aluminum Window Frames
  • Service icon Tempered Glass
  • Service icon Commercial Windows

Website: http://www.boblurieglass.com/
Address: 6960 N Teutonia Ave, Milwaukee, WI 53209
Phone: (414) 351-0400

All American Window & Door Co

Germantown, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Award-Winning
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Timely Service

Services Offered

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

Website: http://www.allamericanwindow.com/
Address: N112W14880 Mequon Rd, Germantown, WI 53022
Phone: (262) 255-7170

Stanek Windows

Menomonee Falls, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

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

Website: https://www.stanekwindows.com/
Address: W141N9296 Fountain Blvd, Menomonee Falls, WI 53051
Phone: (262) 649-9353

Universal Windows Direct of Milwaukee

Menomonee Falls, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Award-Winning
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Timely Service

Services Offered

  • Service icon Glass Showers
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Stained Glass
  • Service icon Residential Windows

Website: https://www.universalwindowsdirect.com/milwaukee
Address: N93W14655 Whittaker Way, Menomonee Falls, WI 53051
Phone: (414) 410-7000

Bay View Shade & Blind, Inc

Menomonee Falls, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Bay Windows
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows

Website: https://bayviewshadeandblind.com/
Address: N95W16979 Falls Pkwy, Menomonee Falls, WI 53051
Phone: (262) 253-1133

Gutter Shutter of Southeast Wisconsin, LLC

Delafield, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Custom Window Designs
  • Service icon Stained Glass
  • Service icon Residential Windows
  • Service icon Aluminum Window Frames
  • Service icon Fast Delivery
  • Service icon Double-Hung

Website: http://www.guttershuttersewi.com/
Address: 24 Enterprise Rd Unit E Unit E, Delafield, WI 53018
Phone: (262) 303-4008

Modern Exterior

Waukesha, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Timely Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Full-Service Installations
  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Commercial Windows

Website: https://modern-exterior.com/
Address: 137 Wisconsin Ave, Waukesha, WI 53186
Phone: (262) 226-9451

Bay View Shade & Blind, Inc

Waukesha, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Bay Windows
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows

Website: https://bayviewshadeandblind.com/
Address: 1616 Paramount Dr, Waukesha, WI 53186
Phone: (414) 545-1153

Argo Glass & Windows - Home Window Repair & Glass Replacement

Milwaukee, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Award-Winning
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Sliding Glass
  • Service icon Residential Windows
  • Service icon Tempered Glass
  • Service icon Double-Hung
  • Service icon Commercial Windows

Website: https://argowindowrepair.com/wisconsin/window-repair-milwaukee
Address: 5255 N 91st St, Milwaukee, WI 53225
Phone: (262) 419-3604

Window Works

Brookfield, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Glass Showers
  • Service icon Bay Windows
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Commercial Windows

Website: https://www.windowworkswi.com/
Address: 3485 N 124th St, Brookfield, WI 53005
Phone: (262) 790-4040

Budget Blinds of New Berlin

New Berlin, WI
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Showers
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows

Website: http://www.budgetblinds.com/NewBerlin
Address: 15136 W National Ave, New Berlin, WI 53151
Phone: (262) 781-9510

Home Glass Co Inc

Milwaukee, WI
3.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Showers
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Full-Service Installations
  • Service icon Residential Windows
  • Service icon Commercial Windows

Website: https://homeglassmilwaukee.com/
Address: 6580 N Industrial Rd, Milwaukee, WI 53223
Phone: (414) 434-0180

Infinity Exteriors LLC

New Berlin, WI
3.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Award-Winning
  • Pros icon Free assessment

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Double-Hung

Website: https://www.infinityroofing.com/
Address: 16600 W Cleveland Ave, New Berlin, WI 53151
Phone: (262) 650-5040

Home Services at The Home Depot

Grafton, WI
3.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Showers
  • Service icon Bay Windows
  • Service icon Custom Window Designs
  • Service icon Stained Glass
  • Service icon Residential Windows
  • Service icon Aluminum Window Frames
  • Service icon Fast Delivery
  • Service icon Commercial Windows

Website: https://www.homedepot.com/l/Grafton/WI/Grafton/53024/4919/services
Address: 1350 Port Washington Rd, Grafton, WI 53024
Phone: (262) 226-2981

Home Services at The Home Depot

West Bend, WI
3.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

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

Website: https://www.homedepot.com/l/West-Bend/WI/West-Bend/53095/4925/services
Address: 700 W Paradise Dr, West Bend, WI 53095
Phone: (262) 226-2984

Exterior Pros

Sussex, WI
3.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Award-Winning
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

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

Website: https://www.extpros.com/
Address: W227N6270 Sussex Rd, Sussex, WI 53089
Phone: (262) 456-3530

How Installing Energy-Efficient Windows in Mayville Saves You Money

Energy-efficient windows can provide benefits in more than one way. Here are a few reasons you may want to make the switch:

  • Save on energy bills: Once you switch to energy-efficient windows, you can see a reduction in your bills by about 12% because you'll require less energy to heat or cool your home.
  • Reduce your carbon footprint: By using less energy after you switch to energy-efficient windows, you'll also be lowering your indirect greenhouse gas emissions by about 12%, according to Energy Star.
  • Protect your investment: The older your home is, the more likely it is that switching to energy-efficient windows will benefit you. Older homes tend to have windows that are outdated, leaky or potentially even damaged in some way. Upgrading your windows could help raise the value of your property if you decide to sell.
  • Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only insulate your home better, but also filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.

Estimated Cost of Window Replacement in Mayville

Windows come in varying shapes and sizes, so costs and services will vary remarkably. Here are the typical costs and services that you'll find from the average window installation company.

How Much Do New Windows Cost?

On average, Mayville homeowners can expect their window replacements to range from $250 to $1,200. The average cost is at approximately $600. Costs will differ significantly based on the current condition of your home, the number of windows you need, your location and the quality of your products. A lot of window companies also offer door installations and other add-ons like coating, baths, shutters and more. These extra services will increase overall project costs.

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

How much your window installation costs will also vary depending on the type of material you choose for the frames. Wood windows are usually the most expensive, although it depends if they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are shown to be more efficient.

What Services do Window Installers Offer?

In regard to window replacements, in general there are two types that your provider will offer: full-frame and pocket installations.

Full-frame installations require replacing the whole window — the sill, frame, trim and all. These are typically done when you want to change the style of your window or when it has significant deterioration. Full-frame installations are more time-consuming and will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window without replacing the frame. Pocket installations are simpler and will be less expensive, but you can't do this kind of installment if you have any pre-existing rot or water damage.

Your window installer should be able to help you decide which type of installation you should get.

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Award-winning company
  • No lifetime warranty

Best Affordability

Window World

★★★★★
4.5

  • Lifetime warranty
  • Large serice area
  • Great industry reputation
  • Quality of service will depend on your area

How We Choose the Best Window Installers in Mayville

EcoWatch reviews differ from other reviews, as we're examining these companies through a sustainability lens. Along with energy efficiency, we evaluated several window installers in Mayville and ranked them using the following methodology:

Service Area

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

Work Quality

We're certain that you're looking for a company to do a great job installing windows. We've vetted each installer in our guide to make sure its technicians are well-qualified and that the company has received a lot of positive customer feedback to vouch for its service.

Customer Reviews

Customer feedback is another super important review factor. If most customers don't have nice feedback about their experience with a certain window installation company, it won't be featured on EcoWatch.

Cost

This one is a give-and-take: as with most services, cheap window installation companies are not going to provide the highest quality service. Still, we want to make sure we're highlighting companies that offer a range of price and financing options so they're accessible to most homeowners.

Warranty

Protecting your investment in new windows is important to many homeowners. That's why window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

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

Mayville, WI Window Replacement FAQs

What is the average cost to install windows in a home?

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

What are the different kinds of windows?

The most common types of windows for homes include: slider windows, double-hung and single-hung windows, awning windows, transom windows, casement windows, bay windows and picture windows.

Can you install your own windows?

Although it is possible to install your own windows, doing so is time-consuming and requires a lot of handiness. Using a window replacement company can help guarantee that the installation is done properly and that you won't have to spend the time and effort to do it yourself.

What time of year is the best time to replace my windows?

Although you can install windows any time of year, warmer weather is often better for replacing windows. In addition, the weather should be dry, because rain can make the installation more difficult.

How often should you replace windows?

Windows have an average 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 any damage on them, or they have become difficult to operate, they may be in need of replacement.

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