20 Best Window Companies in Falls Church, VA (2024 Reviews)

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

We analyzed all the top-rated window companies in Falls Church 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.

A review of the best window installation companies in Falls Church may not seem like the most interesting article on EcoWatch, but trust us, windows have a more direct impact on your life than you might realize. During the summer months, the last thing you want is your cool air to leak out of your drafty windows.

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

Efficient windows are especially important in Falls Church, where the temperature varies throughout the year. According to Energy Star, switching to energy-efficient windows can save the average homeowner up to $356 each year.

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

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 Falls Church

The EcoWatch team assessed dozens of installers across the country to find the top window installation companies for our readers. The providers in this article scored best in our categories: energy-efficient offerings, availability, customer service, price 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 Falls Church. It's 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 window installation sector. Its reputation is backed by all the positive reviews on customer review websites.

You may want to consider picking Window World if you're interested in 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 is an Energy Star partner offering a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so be sure to ask your Window World representative when inquiring about services.

How much does Window World cost in Falls Church?

Prices are not available on Window World’s website, as the cost of window installment varies greatly depending on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. If you’d like more accurate information, you can request a quote on the company’s website.

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 Falls Church. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the window installation sector. Its reputation is backed by all the positive reviews on customer review websites.

You may want to consider picking 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 offering a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so be sure to ask your Andersen representative when inquiring about services.

How much does Renewal by Andersen cost in Falls Church?

Prices are not available on Andersen’s website, as the cost of window installment varies greatly depending on how many and what type(s) of windows you need. However, 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 more accurate information, you can request a quote on the company’s website.

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 Falls Church. 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 about 23 years of experience in the window installation sector. Its reputation is backed by all the positive reviews on customer review websites.

You may want to consider picking Aeroseal if you're interested in a company that installs windows and doors at businesses across the Eastern U.S.

Energy Efficiency of Aeroseal Windows Windows

Aeroseal Windows is an Energy Star partner offering a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so be sure to ask your Aeroseal representative when inquiring about services.

How much does Aeroseal Windows cost in Falls Church?

Prices are not available on Aeroseal’s website, as the cost of window installment varies greatly depending on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. If you’d like more accurate information, you can request a quote on the company’s website.

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 Falls Church. It's 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 window installation sector. Its reputation is backed by all the positive reviews on customer review websites.

You may want to consider picking Window Nation if you're interested in 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 is an Energy Star partner offering a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so be sure to ask your Window Nation representative when inquiring about services.

How much does Window Nation cost in Falls Church?

Prices are not available on Window Nation’s website, as the cost of window installment varies greatly depending on how many and what type(s) of windows you need. However, 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. If you’d like more accurate information, you can request a quote on the company’s website.

We’ve recommended providers with shining reputations, but note that some national companies have independently owned locations in Falls Church, 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 Falls Church

Renewal by Andersen of the Capital Region

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

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Double-Hung
  • 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
3.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Products made in the USA
  • Pros icon Sunrooms
  • Pros icon Single-source accountability

Services Offered

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

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 Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

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

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

Services Offered

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

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

Tri County Windows and Siding

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

Services Offered

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

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

Old Town Glass & Window Repair

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

Services Offered

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

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

Pella Windows & Doors of Tysons Corner

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

Services Offered

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

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

Safety Window Glass Repair LLC

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

Services Offered

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

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

The Window Man

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

Metric Windows Shower Doors and Glass Repair

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

Services Offered

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

Website: https://www.metricwindows.com/
Address: 3917 El Camino Pl, Alexandria, VA 22309
Phone: (571) 218-0759

Hodges Windows & Doors

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

Services Offered

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

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 Timely Service
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

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

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

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

Marlow Heights, MD
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Custom glass services
  • Pros icon Good Customer Service
  • Pros icon 24-hour emergency availability
  • Pros icon Free assessment
  • Pros icon Free in-person consultation

Services Offered

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

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

Vinyl-Lite Window Factory and Showroom

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

Services Offered

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

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

KELEMER BROTHERS REPLACEMENT WINDOWS

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

Services Offered

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

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

Supreme Window

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

Services Offered

  • Service icon Custom Window Designs
  • Service icon Window Replacement/Installation

Website: https://supreme-window.com/
Address: 5215 Lawrence Pl, Hyattsville, MD 20781
Phone: (301) 322-3450

Window Replacement DC - Tysons

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

Services Offered

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

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 Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Fiberglass Frames
  • Service icon Vinyl 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

Liberty Home Remodeling

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

Services Offered

  • Service icon Window Replacement/Installation

Website: https://www.libertyhomeremodeling.com/
Address: 14100 Sullyfield Cir Suite 500, Chantilly, VA 20151
Phone: (703) 481-8500

Glaze Replace

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

Services Offered

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

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

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

There are several perks of switching to energy-efficient windows. A few reasons you may want to consider making the change are the following:

  • Save on power bills: Once you switch to energy-efficient windows, you can expect a reduction in your bills by about 12% because you’ll require less energy to heat or cool your home.
  • 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.
  • Protect your investment: Upgrading your windows is an important part of maintaining your property and its value, particularly if you have an older home.
  • Reduce your carbon footprint: Because energy-efficient windows improve the insulation in your home, you can reduce your indirect greenhouse gas emissions by about 12%, according to Energy Star.

Estimated Cost of Window Replacement in Falls Church

Each window installer offers varying services and has varying costs based on several factors.

How Much Do New Windows Cost?

On average, Falls Church homeowners can expect their window installations to range from $250 to $1,200. The most common installations sit at about $600. How much it will cost varies based on several factors, including size, type, the location of your home, number of windows, material and more.

It’s also worth keeping in mind that energy-efficient windows will usually cost more initially, but Energy Star predicts that upgrading the windows on your Falls Church home translates to an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. How much you’ll save by installing energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

We recommend requesting free quotes from several window installation companies to find the right windows and the company that works best for your budget.

What Services do Window Installers Offer?

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

Full-frame installations are usually recommended when you want to change the style of your windows or your window has significant deterioration. With this service, your installers will replace the total window, including the sill, trim and frame. A pocket installation means replacing a window without removing the whole frame, which is usually cheaper than a full-frame installation.

Your window installation company can advise you on the best type for your project. In Falls Church, the choice will mostly be influenced by the efficiency of your home and the condition of your existing frames.

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

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 Falls Church

EcoWatch reviews are different from other reviews since we look at these companies through a sustainability lens. Along with energy efficiency, we assessed each installer and ranked them using the following methodology:

Service Area

This one is pretty 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 certain that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each company included on this list to ensure its contractors 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 very important review factor. If most customers don’t have positive feedback about their experience with a certain window installation company, you won’t see it featured on EcoWatch.

Cost

This one is a give-and-take: similar to other services, cheap window installation companies are not going to provide the most quality service. On the other hand, we want to ensure we’re highlighting companies that provide a variety of price and financing options so they’re accessible to most homeowners.

Warranty

As discussed previously, windows are a serious investment, so you’ll want to make sure that investment is protected. Window installation companies that have 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 installers 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.

Falls Church, VA Window Replacement FAQs

How much should window installation cost?

The average cost of installing a window ranges from $450 to $650. There are several factors that affect the price, which include the number of windows, styles and sizes of windows, your property’s location, the materials used in designing the windows, how energy-efficient the windows are and local labor costs.

What are the types of windows?

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

Can I install my own windows?

If you’re handy and know how to replace a window, it’s possible to install your own windows. However, if you don’t have the time or skills, we recommend getting a professional to do it for you.

How often do you need to replace your windows?

Windows usually last 20 to 30 years, but anytime you notice damage on your windows, it’s a good idea to have them checked by an expert to see if they are in need of a repair or replacement.

How long does window installation typically take?

Each window takes about 30 minutes to install based on the kind of window. However, the window installation can take two days or more if you need to have a lot of windows installed.