20 Best Window Companies in Potomac, MD (2024 Reviews)

Are you thinking of upgrading your windows? Our list of the best window installation companies can help you choose the right one for you.

We analyzed all the top-rated window companies in Potomac 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 clean energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your house’s efficiency can also have a big impact on home energy conservation. Drafty windows can reduce your home’s energy efficiency by up to 30%, according to the Department of Energy. In Potomac, that’s nearly $294 a year that you could save on your electricity bills after making the switch.

Luckily, helping you save money with upgraded windows also aligns with our goals of conserving energy and the resources it takes to produce it.

We’ve put together a list of the best installation companies to help you in your search, so you can not only benefit from brand-new windows, but also save money on your electricity bills.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

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 Window Installation & Replacement Companies in Potomac

The EcoWatch team assessed dozens of window installation companies across Potomac to narrow our list down to the top ones. The companies in this article scored the best in our review categories, which include energy-efficient offerings, price, local expertise, availability, customer service 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 provides windows expertise in Potomac. This company has 27 years of experience in the windows industry, and it has proved to be one of the most reputable companies in Potomac.

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

There are a wide variety of window types that Window World offers, some of which are Energy Star products. 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 Potomac?

Prices aren’t displayed on Window World’s website, but it's known for offering some of the most affordable window installations around. Receiving a free quote on its website is the best way to get more accurate information.

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 provides the best availability in Potomac. This company has 27 years of experience in the windows industry, and it has proved to be one of the most reputable companies in Potomac.

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

There are a wide variety of window types that Renewal by Andersen offers, some of which are Energy Star products. 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 Potomac?

Prices aren’t displayed on Andersen’s website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Receiving a free quote on its website is the best way to get more accurate information.

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 provides the best window installation for businesses in Potomac. This company has 23 years of experience in the windows industry, and it has proved to be one of the most reputable companies in Potomac.

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

There are a wide variety of window types that Aeroseal Windows offers, some of which are Energy Star products. 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 Potomac?

Prices aren’t displayed on Aeroseal’s website, but it provides high-quality windows at a competitive price point. Receiving a free quote on its website is the best way to get more accurate information.

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 provides the best residential windows in Potomac. This company has 16 years of experience in the windows industry, and it has proved to be one of the most reputable companies in Potomac.

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

There are a wide variety of window types that Window Nation offers, some of which are Energy Star products. 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 Potomac?

Prices aren’t displayed on Window Nation’s 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. Receiving a free quote on its website is the best way to get more accurate information.

Please note that the following companies are national, meaning the quality of the service may vary depending on your local team. We have tried to remain unbiased and transparent by mentioning pros and cons for each company.

More Window Companies in Potomac

Renewal by Andersen of the Capital Region

North Bethesda, MD
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

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

Website: https://www.renewalbyandersen.com/window-company/085-capital-region/about-us
Address: 5081 Nicholson Ln, North Bethesda, MD 20852
Phone: (301) 816-3221

Champion Replacement Windows of Baltimore

Rosedale, MD
3.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Sunrooms
  • Pros icon Products made in the USA
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Single-source accountability

Services Offered

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

Website: https://www.championwindow.com/Baltimore/
Address: 23 Fontana Ln, Rosedale, MD 21237
Phone: (410) 202-8636

Window Nation

Lorton, VA
4.5
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

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

Website: https://www.windownation.com/northern-va-showroom
Address: 8198 Terminal Rd #105, Lorton, VA 22079
Phone: (703) 372-4540

Tri County Windows and Siding

Vienna, VA
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

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

Website: http://www.tricountywindowsva.com/
Address: 200 Lawyers Rd NW #1629, Vienna, VA 22183
Phone: (703) 472-6330

Safety Window Glass Repair LLC

Bethesda, MD
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Mirrors
  • Service icon Glass Showers
  • Service icon Skylights
  • Service icon Triple Pane Glass
  • Service icon Custom Glass
  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Glass Repair
  • Service icon Window Repair
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation
  • Service icon Tempered Glass

Website: https://safetywindowglassrepair.com/
Address: 7529 Spring Lake Dr Unit C1, Bethesda, MD 20817
Phone: (202) 460-8860

Pella Windows & Doors of Tysons Corner

Vienna, VA
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Vinyl Frames
  • Service icon Wood Frames
  • Service icon Double-Hung
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: http://www.pellabranch.com/northern-virginia/showrooms/vienna/
Address: 8150 Leesburg Pike Suite 140, Vienna, VA 22182
Phone: (301) 354-3689

Pella Windows & Doors of Gaithersburg

Gaithersburg, MD
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Wood Frames
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Double-Hung

Website: http://www.pellabranch.com/washington-dc/showrooms/gaithersburg
Address: 202 Perry Pkwy Suite 6, Gaithersburg, MD 20877
Phone: (202) 810-6722

KELEMER BROTHERS REPLACEMENT WINDOWS

Silver Spring, MD
5.0
★★★★★
  • Pros icon Over 50,000 projects completed
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Lifetime warranty
  • Pros icon Price Transparency
  • Pros icon No sales pressure

Services Offered

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

Website: http://www.kelemerbrothers.com/
Address: 10822 Childs Ct, Silver Spring, MD 20901
Phone: (410) 299-0038

Hodges Windows & Doors

Falls Church, VA
4.4
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

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

Website: http://www.hodgescompany.com/
Address: 120 W Jefferson St, Falls Church, VA 22046
Phone: (703) 532-0184

Window and Door Showplace Inc

McLean, VA
4.1
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Timely Service

Services Offered

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

Website: http://www.wdshowplace.com/
Address: 6832 Old Dominion Dr Suite 103, McLean, VA 22101
Phone: (703) 506-3650

Capital Remodeling, Inc.

Gaithersburg, MD
4.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

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

Website: http://www.capitalremodeling.com/
Address: 555 Quince Orchard Rd #210, Gaithersburg, MD 20878
Phone: (800) 310-7154

The Window Man

Fairfax, VA
4.6
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Storm/Impact Windows

Website: http://www.thewindowman.com/
Address: 3853-A Pickett Road, Fairfax, VA 22031
Phone: (703) 978-9888

Reston Glass

Herndon, VA
3.6
★★★★★

    Services Offered

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

    Website: https://www.restonglass.com/
    Address: 133 Spring St, Herndon, VA 20170
    Phone: (703) 860-2089

    Gaithersburg Glass Company

    Gaithersburg, MD
    3.8
    ★★★★★
    • Pros icon Free assessment
    • Pros icon Price Transparency
    • Pros icon Good Customer Service
    • Pros icon Educational Website

    Services Offered

    • Service icon Custom Window Designs
    • Service icon Mirrors
    • Service icon Glass Doors
    • Service icon Glass Showers
    • Service icon Window Replacement/Installation
    • Service icon Energy-Efficient Options
    • Service icon Custom Glass
    • Service icon Storm/Impact Windows

    Website: http://www.gburgglass.com/
    Address: 19200 Chennault Way, Gaithersburg, MD 20879
    Phone: (301) 948-2623

    DISTRICT CAPITOL GLASS LLC

    Alexandria, VA
    5.0
    ★★★★★
    • Pros icon Good Customer Service
    • Pros icon Educational Website
    • Pros icon Price Transparency
    • Pros icon Warranties available
    • Pros icon Free assessment
    • Pros icon Same-day response guarantee
    • Pros icon 24/7 emergency service

    Services Offered

    • Service icon Glass Doors
    • Service icon Window Repair
    • Service icon Window Replacement/Installation
    • Service icon Mirrors
    • Service icon Glass Repair
    • Service icon Glass Showers
    • Service icon Screen Repair

    Website: https://districtcapitolglass.com/
    Address: 205 Yoakum Pkwy #1119, Alexandria, VA 22304
    Phone: (571) 344-4416

    Window Replacement DC - Tysons

    Tysons, VA
    3.4
    ★★★★★
    • Pros icon Free assessment
    • Pros icon Price Transparency
    • Pros icon Educational Website
    • Pros icon Good Customer Service

    Services Offered

    • Service icon Storm/Impact Windows
    • Service icon Wood Frames
    • Service icon Custom Window Designs
    • Service icon Vinyl Frames
    • Service icon Double-Hung
    • Service icon Glass Repair
    • Service icon Fiberglass Frames
    • Service icon Window Repair
    • Service icon Bay Windows
    • Service icon Glass Showers
    • Service icon Mirrors
    • Service icon Glass Doors
    • Service icon Window Replacement/Installation
    • Service icon Skylights
    • Service icon Energy-Efficient Options

    Website: https://window-replacement-dc.com/tysons/
    Address: 7901 Jones Branch Dr #619, Tysons, VA 22102
    Phone: (702) 553-3278

    Alco Products Inc.

    Tysons, VA
    3.4
    ★★★★★
    • Pros icon Free assessment
    • Pros icon Price Transparency
    • Pros icon Good Customer Service
    • Pros icon Educational Website

    Services Offered

    • Service icon Glass Doors
    • Service icon Vinyl Frames
    • Service icon Wood Frames
    • Service icon Fiberglass Frames
    • Service icon Window Replacement/Installation

    Website: https://www.alcoproductsinc.com/
    Address: 1750 Tysons Blvd Ste 1500, Tysons, VA 22102
    Phone: (703) 534-3349

    Old Town Glass & Window Repair

    Alexandria, VA
    5.0
    ★★★★★
    • Pros icon Free assessment
    • Pros icon Affordable prices
    • Pros icon Price Transparency
    • Pros icon Large online project gallery
    • Pros icon Third-generation glassier
    • Pros icon Good Customer Service

    Services Offered

    • Service icon Glass Repair
    • Service icon Glass Showers
    • Service icon Window Replacement/Installation
    • Service icon Glass Doors
    • Service icon Mirrors
    • Service icon Custom Glass

    Website: http://www.oldtownglassandmirror.com/
    Address: 244 S Reynolds St, Alexandria, VA 22304
    Phone: (703) 609-3508

    Blaine Window & Door

    Silver Spring, MD
    3.3
    ★★★★★
    • Pros icon Price Transparency

    Services Offered

    • Service icon Window Replacement/Installation

    Website: http://www.blainewindowanddoor.com/
    Address: 2410 Linden Ln, Silver Spring, MD 20910
    Phone: (301) 565-4949

    Glaze Replace

    McLean, VA
    3.3
    ★★★★★
    • Pros icon Price Transparency
    • Pros icon Free assessment
    • Pros icon Good Customer Service
    • Pros icon Educational Website

    Services Offered

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

    Website: https://mcleanwindowreplacement.com/
    Address: 1483 Chain Bridge Rd suite 206, McLean, VA 22101
    Phone: (571) 556-4200
    Potomac Window Cost Calculator

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

    When you upgrade to energy-efficient windows, you may see a few benefits, such as:

    • Save money on energy bills: Because energy-efficient windows decrease the amount of energy used to heat or cool your home, the switch can help you save around $294 annually on your energy bills in Potomac.
    • Decrease your carbon footprint: Because energy-efficient windows improve the insulation in your house, you can reduce your carbon footprint by about 12%, according to Energy Star.
    • 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.
    • Protect your investment: If you have an older home, your windows are most likely outdated. Upgrading your windows can make your home more comfortable and also help increase the value of your property if you decide to sell.

    Estimated Cost of Window Replacement in Potomac

    Each window installation company offers various services and has different costs depending on a few factors.

    How Much Do New Windows Cost?

    According to our market research, the national average cost of replacing a single window is about $600. However, window installation costs can range from $200 to $1,200 a window. But prices vary remarkably based on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also provide door replacements, which will add extra costs to your project.

    With windows, efficiency is one of the most important factors for many homeowners. High efficiency windows may cost more off the bat, but by increasing the efficiency of your home — especially during the summer and winter — they can provide many years of energy savings. According to Energy Star, buying certified energy-efficient windows can save Potomac homeowners $294+ a year after replacing single-pane windows.

    Costs will also vary based on the material you want for your window frames. Aluminum frames are the least expensive. They’re sturdy, light and maintenance-free, but offer poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made using wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They’re also aesthetically pleasing and provide decent insulation for your home.

    What Services do Window Installers Offer?

    There are generally two kinds of window replacement services: full-frame and pocket installations.

    Full-frame installations involve replacing the entire 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 a great amount of rot or deterioration. Full-frame installations involve 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 or rot, you should opt for a full-frame installation instead.

    If you’re unsure which window installation service you need, your installer should be able to assist you. In general, the choice is based on factors like the age and condition of the home, the type of building material, budget and time restrictions.

    Best Availability

    Renewal by Andersen

    ★★★★★
    4.5
    • Great Industry Reputation
    • Award-winning Company
    • Member of US Green Building Council
    • Manufactures products in-house
    Save $375 Off Each Window
    Get Estimate

    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

    How We Choose the Best Window Installers in Potomac

    The EcoWatch Reviews team differs from other reviewers because we’re examining these companies through a sustainability lens. Along with energy efficiency, we analyzed each installer and ranked them based on the following methodology:

    Service Area

    Because this is a guide for Potomac, we gave more points to companies that serve the city. There are other reputable providers that didn’t make our list because of the low odds that they would serve the average homeowner in Potomac.

    Work Quality

    We’re willing to bet that you’re looking for professionals who do a great job installing windows. We’ve vetted each installer featured in our guide to ensure its technicians are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.

    Customer Reviews

    Customer feedback is another very important review factor. If the majority of customers don’t have positive things to say about their experience with a certain installer, it won’t be featured on EcoWatch.

    Cost

    Cheaper windows don’t necessarily mean better windows, but we know many of our readers want to keep costs low when possible. When analyzing the prices of providers, we awarded higher points to companies with reasonable prices and accessible financing rather than “cheaper” services.

    Warranty

    Protecting your investment in new windows is important to many homeowners. That’s why window installation companies that provide lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

    Years of Experience

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

    Potomac, MD Window Replacement FAQs

    How much does a window install cost?

    The average cost of installing a single window can range between $450 and $650. There are a variety of factors that affect how much it costs, such as your property’s location, local labor costs, styles and sizes of windows, the materials used in designing the windows, how energy-efficient the windows are and the number of windows.

    Which type of window should I get?

    Generally, double-pane windows are more efficient than single-pane windows and windows that do not open will be more efficient than windows that do. If you want to be sure you’ll get the most energy-efficient windows, look for models that have the blue Energy Star certification — that means they’re certified energy-efficient by the U.S. Department of Energy.

    Can I install my own windows?

    If you’re handy and have experience with installing a replacement window, it’s possible to install your own windows. But if you don’t have the time or experience, we recommend getting a professional to do it for you.

    Should I replace my windows all at once?

    If your windows are more than 20 years old, you probably need to replace all of them. At that point, they are typically less efficient, draftier and/or more damaged than new windows. Replacing your windows all at once will involve less paperwork and less time.