20 Best Window Companies in Springfield, VA (2024 Reviews)

If you’re looking to upgrade to new windows, our list of the top window installation companies can help.

We analyzed all the top-rated window companies in Springfield 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 April 21, 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.

The EcoWatch Reviews team is all about finding solutions for eco-conscious homeowners in Springfield. Traditional, outdated windows can cost you in electric bills. As a matter of fact, the Department of Energy estimates that 25-30% of your home’s heat or cool air could be lost through your windows.

Thankfully, helping you save money with more efficient windows also helps our goals of reducing energy usage for the environment.

Unlike other sites, EcoWatch ranks window installation companies on energy efficiency while also balancing cost, customer satisfaction and service area.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house
Buy One Window, Get One 40% OFF
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Buy 2 Windows, Get 2 Free
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 Springfield

The EcoWatch Reviews team assessed many window installation companies across Springfield to narrow our list down to the top ones. The providers we’ve included in this article scored best in our categories: energy-efficient offerings, price, customer service, availability 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 Springfield. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window installation industry for about 27 years.

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 Springfield?

Prices aren’t displayed on Window World’s website, but it's known for offering some of the most affordable window installations around. You can inquire about a free quote on its website for more information about pricing.

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 Springfield. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window installation industry for about 27 years.

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 Springfield?

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. You can inquire about a free quote on its website for more information about pricing.

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 Springfield. It's 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 been in the window installation industry for about 23 years.

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 Springfield?

Prices aren’t displayed on Aeroseal’s website, but it provides high-quality windows at a competitive price point. You can inquire about a free quote on its website for more information about pricing.

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 Springfield. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has been in the window installation industry for about 16 years.

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 Springfield?

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. You can inquire about a free quote on its website for more information about pricing.

We aim to be unbiased and transparent by including pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.

More Window Companies in Springfield

Renewal by Andersen of the Capital Region

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

Services Offered

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

Website: https://www.renewalbyandersen.com/window-company/085-capital-region/about-us
Address: 2814 Merrilee Dr A, Fairfax, VA 22031
Phone: (703) 719-4052

Champion Replacement Windows of Baltimore

Rosedale, MD
3.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

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

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

Window World of Washington DC

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

Services Offered

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

Website: https://www.windowworlddc.com/
Address: 4116 Walney Rd Suite J, Chantilly, VA 20151
Phone: (703) 378-7999

Window Nation

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

Services Offered

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

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

DISTRICT CAPITOL GLASS LLC

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

Services Offered

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

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

Old Town Glass & Window Repair

Alexandria, VA
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

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

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

Tri County Windows and Siding

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

Services Offered

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

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

Potomac Glass Pro

Woodbridge, VA
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

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

Website: http://www.potomacglasspro.com/
Address: 1941 Heatherbrook Ct, Woodbridge, VA 22192
Phone: (571) 213-2205

Pella Windows & Doors of Tysons Corner

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

Services Offered

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

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

Sunshine Contracting Corporation

Woodbridge, VA
4.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Timely Service

Services Offered

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

Website: https://sunshinecontractingcorp.com/
Address: 12958 Harbor Dr, Woodbridge, VA 22192
Phone: (703) 499-8654

Vinyl-Lite Window Factory and Showroom

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

Services Offered

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

Website: https://www.vinyl-lite.com/
Address: 8815 Telegraph Rd, Lorton, VA 22079
Phone: (703) 550-7766

Hodges Windows & Doors

Falls Church, VA
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

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

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

The Window Man

Fairfax, VA
4.1
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

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

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

Window and Door Showplace Inc

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

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • 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

Window Replacement DC - Reston

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

Services Offered

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

Website: https://window-replacement-dc.com/reston/
Address: 1890 Preston White Dr #383, Reston, VA 20191
Phone: (702) 703-3190

Anderson Glass Contractors - Frameless Shower Door, Glass Door in Alexandria VA

Marlow Heights, MD
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

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

Website: https://precisionglassexperts.com/
Address: 4570 Beech Rd, Marlow Heights, MD 20748
Phone: (703) 623-2223

Alco Products Inc.

Tysons, VA
3.2
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

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

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

Window Replacement DC - Tysons

Tysons, VA
3.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

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

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

Select Glass & Windows Inc

Arlington, VA
3.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

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

Website: https://selectglasswindows.com/
Address: 2776 S Arlington Mill Dr # 245, Arlington, VA 22206
Phone: (703) 309-4118

Sunbrite Windows and Doors

Alexandria, VA
3.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation

Website: http://sunbritewindowsanddoors.com/
Address: 631 S Patrick St, Alexandria, VA 22314
Phone: (703) 647-9940
Springfield Window Cost Calculator

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

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

  • Save money on power bills: Switching to energy-efficient windows lowers your energy bills by about 12% since you use less energy.
  • Protect your investment: Upgrading your windows is an important part of maintaining your property and its value, particularly if you have an older home.
  • Protect your valuables from fading: When you switch to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will fade less due to their ability to filter out harmful UV rays.
  • Decrease your carbon footprint: Reducing how much energy you use also lowers your indirect greenhouse gas emissions. You could reduce it by about 376 pounds.

Estimated Cost of Window Replacement in Springfield

Let’s go over the cost of updating your windows and the types of services offered by installers.

How Much Do New Windows Cost?

Typically, homeowners in Springfield can anticipate that most window installations will range from $250 to $1,200, with the average cost sitting at around $600. How much it will cost varies depending on several factors, including type, material, size, number of windows, the location of your home and more.

It’s also worth noting that energy-efficient windows will cost more initially, but Energy Star estimates that switching out the windows on your Springfield home translates to an average energy savings of $236 to $319 a year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. The amount of money you’ll save by installing energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

Another factor that affects the total cost is the material you pick for your frame. Aluminum frames are generally the least pricey and are sturdy and relatively maintenance-free, but they offer poor insulation. On the other hand, wood frames are the most expensive because they are aesthetically pleasing and offer decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.

What Services do Window Installers Offer?

When considering window installations, in general there are two kinds that your provider will have: full-frame and pocket installations.

A full-frame installation is a replacement of the full window. It involves removing the old window, the sill, and the exterior and interior trim. It also involves other materials, like insulation and drip edges, which raise the overall cost of the project. Also worth noting: you may have to touch up the paint around the window after a full-frame installation. Pocket installations (also known as retrofits) are when you replace a window while leaving the existing frame. Pocket installations are simpler and won’t cost as much, but you can’t do this kind of installment if you have any pre-existing rot or water damage.

Your window installer can help you figure out which type of installation you should get.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house
Buy One Window, Get One 40% OFF
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Buy 2 Windows, Get 2 Free
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 Springfield

The EcoWatch Reviews team is different from most reviewers, as we look at these companies through a sustainability lens. Along with energy efficiency, we evaluated window companies all across the state and assigned rankings based on the following methodology:

Service Area

This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve a wide variety of states and cities so you can find the right window installation company near you.

Work Quality

We’re willing to bet that you’re looking for professionals who do a great job installing windows. We’ve vetted each company included 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

Another self-explanatory yet very important review factor is customer feedback. If most customers don’t have good things to say about their experience with a certain company, you won’t see it featured on EcoWatch.

Cost

This one is a give-and-take: as with other services, cheap window companies won’t always provide the highest quality service. Still, we want to make sure we’re highlighting companies that offer a variety of price and financing options so they’re accessible to most homeowners.

Warranty

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

Years of Experience

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

Springfield, VA Window Replacement FAQs

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

The typical cost to replace one window ranges between $450 and $650. There are many factors that influence the price, including local labor costs, styles and sizes of windows, how energy-efficient the windows are, the number of windows, your property’s location and the materials used in designing the windows.

What are the most common kinds of replacement windows?

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

Do I really have to use a window installation company?

Unless you have home repair skills and have the tools needed to replace your own windows, we recommend hiring a professional. The window installation process is complex and can take anywhere from four to six hours for a single window. Although it’s tempting to try to do it yourself to save money, hiring a professional is a faster, more efficient and much safer alternative.

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

Replacement windows can be installed during any season, but warmer weather is typically better. Regardless of when you install them, the contractors will take steps to make sure that too much hot or cold air doesn’t get into your home, so the temperature outside doesn’t necessarily matter that much. What’s more important than the temperature is that the weather should be dry.

Should I replace all my windows at the same time?

If you’re upgrading your windows because of energy-efficiency, replacing all the windows at the same time is the only way to see a noticeable difference. On the other hand, if you have just one or two windows that are broken or leaky, you can replace just those.