20 Best Window Companies in Leesburg, VA (2024 Reviews)
If you’re thinking of upgrading to new windows, our guide to the best window installation companies can help.
We analyzed all the top-rated window companies in Leesburg and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
Whether you're updating for style or have damaged windows, windows play an important role in conserving your home's electricity. Traditional, outdated windows could lead to spending more on electric bills during the winter or summer months.
That’s bad news for both your wallet and the environment, but one of the top window installation companies can help you with that.
So if you’re constructing a new home, renovating or changing out old windows in Leesburg, this guide is the best place to get started.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in Leesburg
The EcoWatch team researched dozens of companies that service the Leesburg area to find the top window installation companies by our standards. The companies reviewed in this article scored best in our categories, which include energy-efficient offerings, availability, customer service, price and more.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World offers windows expertise in Leesburg. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This window installation company has been operating since 1995 and currently provides services to 200 locations nationwide. The provider has plenty of glowing reviews from customers on online review websites.
It 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 WindowsIts high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World’s offerings are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.
How much does Window World cost in Leesburg?Prices are not available on Window World’s website because the cost of window installment differs based 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 inquire about a quote on the company’s website.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
More expensive than competition
Renewal by Andersen offers the best availability in Leesburg. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This window installation company has been operating since 1995 and currently provides services to nearly every state except Mississippi and West Virginia. The provider has plenty of glowing reviews from customers on online review websites.
It 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 WindowsA 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. Not all of Andersen’s offerings are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Leesburg?Prices are not available on Andersen’s website because the cost of window installment differs based 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 inquire about a quote on the company’s website.

Aeroseal Windows
Many years of experience
Great industry reputation
Low number of customer complaints
Manufactures products in-house
Custom Designs
No lifetime warranty
Not ideal for residential installations
Aeroseal Windows offers the best window installation for businesses in Leesburg. 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. This window installation company has been operating since 1999 and currently provides services to 13 states and Washington D.C. The provider has plenty of glowing reviews from customers on online review websites.
It installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsThe 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. Not all of Aeroseal’s offerings are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.
How much does Aeroseal Windows cost in Leesburg?Prices are not available on Aeroseal’s website because the cost of window installment differs based 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 inquire about a quote on the company’s website.

Window Nation
Award-winning company
Manufactures products in-house
Custom designs
Wide variety of products and services
Installation not covered by warranty
Limited service area
Window Nation offers the best residential windows in Leesburg. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This window installation company has been operating since 2006 and currently provides services to residents within 75 miles of its showrooms, which are in 13 states. The provider has plenty of glowing reviews from customers on online review websites.
It gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsEach 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. Not all of Window Nation’s offerings are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.
How much does Window Nation cost in Leesburg?Prices are not available on Window Nation’s website because the cost of window installment differs based 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 inquire about a quote on the company’s website.
We’ve recommended companies with good reputations, but note that some national companies have independently owned locations in Leesburg, so your service may vary depending on your local crew. We have tried to be unbiased and transparent by including pros and cons for each company reviewed.
More Window Companies in Leesburg
Renewal by Andersen of the Capital Region
North Bethesda, MDPrice Transparency
Educational Website
Good Customer Service
Free assessment
Services Offered
Bay Windows
Skylights
Double-Hung
Window Replacement/Installation
Glass Doors
Champion Replacement Windows of Baltimore
Rosedale, MDSingle-source accountability
Good Customer Service
Price Transparency
Free assessment
Products made in the USA
Sunrooms
Services Offered
Double-Hung
Window Replacement/Installation
Bay Windows
Glass Doors
Window Nation
Glen Burnie, MDEducational Website
Free assessment
Price Transparency
Services Offered
Energy-Efficient Options
Triple Pane Glass
Window Replacement/Installation
Custom Window Designs
Bay Windows
Glass Doors
Wood Frames
Double-Hung
Vinyl Frames
C2 Operations
Leesburg, VAPrice Transparency
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Glass Doors
Double-Hung
Milcon Design & Build
Waterford, VAEducational Website
Free assessment
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Bright Side Exteriors
Centreville, VAFree assessment
Services Offered
Window Repair
Window Replacement/Installation
Glass Doors
Tri County Windows and Siding
Vienna, VAPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Bay Windows
Skylights
Custom Window Designs
Glass Doors
Window Replacement/Installation
Double-Hung
Home Exteriors LLC.
Manassas, VATimely Service
Price Transparency
Free assessment
Educational Website
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
KELEMER BROTHERS REPLACEMENT WINDOWS
Silver Spring, MDEducational Website
Free assessment
Price Transparency
Services Offered
Energy-Efficient Options
Window Replacement/Installation
DISTRICT CAPITOL GLASS LLC
Alexandria, VAGood Customer Service
Free assessment
Educational Website
Price Transparency
Services Offered
Glass Repair
Window Replacement/Installation
Glass Doors
Mirrors
Glass Showers
Screen Repair
Window Repair
Old Town Glass & Window Repair
Alexandria, VAAffordable prices
Good Customer Service
Free assessment
Large online project gallery
Third-generation glassier
Price Transparency
Services Offered
Custom Glass
Glass Repair
Glass Showers
Glass Doors
Mirrors
Window Replacement/Installation
Advanced Window & Glass Repair, LLC
Woodbridge, VAFree assessment
Price Transparency
Good Customer Service
Timely Service
Educational Website
Services Offered
Window Repair
Energy-Efficient Options
Custom Glass
Double-Hung
Tempered Glass
Glass Showers
Fiberglass Frames
Bay Windows
Vinyl Frames
Glass Repair
Window Replacement/Installation
Glass Doors
Mirrors
Anderson Glass Contractors - Frameless Shower Door, Glass Door in Alexandria VA
Marlow Heights, MDGood Customer Service
Free in-person consultation
Custom glass services
24-hour emergency availability
Free assessment
Price Transparency
Educational Website
Services Offered
Mirrors
Glass Repair
Window Replacement/Installation
Glass Showers
Glass Doors
Custom Glass
Capitol Improvements - Roofing & Siding Contractor
Bowie, MDEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Replacement Windows and Doors-Homerite Waynesboro
Waynesboro, PAPrice Transparency
Educational Website
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Glass Doors
Glass Repair
Energy-Efficient Options
Potomac Windows & Doors
Fredericksburg, VAPrice Transparency
Services Offered
Window Replacement/Installation
Garrety Glass - Betterliving Sunrooms
Cockeysville, MDPrice Transparency
Timely Service
Free assessment
Good Customer Service
Educational Website
Services Offered
Mirrors
Custom Glass
Glass Doors
Bay Windows
Glass Showers
Window Replacement/Installation
Glass Repair
American Awnings and Replacement Windows
Chambersburg, PATimely Service
Price Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
American Remodel
Annapolis, MDEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
AC Matthews, Roofing & Exteriors
Towson, MDFree assessment
High-quality materials
Educational Website
Price Transparency
Good Customer Service
All-inclusive repair and maintenance
Energy-efficient windows
Services Offered
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Leesburg, VA using our customized window cost calculator.
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 Leesburg Saves You Money
When you upgrade to energy-efficient windows, you may see a few benefits, including:
- Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
- Decrease your carbon footprint: Since energy-efficient windows improve the insulation in your house, you can cut your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Save money on power 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.
- Protect your investment: If your home is on the older side, your windows are most likely in need of replacement. Updating your windows can improve the insulation in your home and also help increase the value of your home if you decide to sell.
Estimated Cost of Window Replacement in Leesburg
Windows come in different purposes, styles and shapes, so costs and services will vary tremendously based on your project. Below, we detail the average cost and services that you’ll find from window replacement companies.
How Much Do New Windows Cost?
According to our market research, the national average cost to replace a single window is around $600. However, window installation costs can range from $200 to $1,200 per window. These numbers vary depending on the specifics of your installation, such as number of windows, material, type, size, the location of your home and more.
With windows, efficiency is the most important factor for many homeowners. Windows with higher efficiency may cost more upfront, but by increasing the efficiency of your home — especially during the summer and winter — they can provide decades of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Leesburg homeowners $353+ per year after replacing single-pane windows.
Costs will also vary depending on the material you pick for your window frames. Aluminum frames are the least expensive. They’re sturdy, light and easy to maintain, but offer poor insulation. Vinyl frames are somewhat expensive and offer good insulation. Composite frames made using wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They’re also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
There are generally two types of window installation services: full-frame and pocket installations.
Full-frame installations involve 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 rot or deterioration. Full-frame installations are more comprehensive and will increase overall costs. A pocket installation involves replacing a window within the old frame. So, instead of taking out the whole window and reinstalling it, the window installer will just slide the replacement window (also called a retrofit or insert window) into the frame.
Your window replacement company will be able to help you decide what’s best for your needs. In Leesburg, the decision will mostly be based on the age of your windows and if there’s any damage. Wood can decay if not maintained properly over the years, so it’s a good idea to have a professional examine your frames and window sills.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
How We Choose the Best Window Installers in Leesburg
In our search to make your home improvements easier and more eco-friendly in Leesburg, the EcoWatch Reviews team chose the above companies as the top window installation companies in the city. We’ve decided to evaluate the top window installation companies in Leesburg mostly based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to lower power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
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
When installing new windows, the quality and breadth of services can often play just as important of a role in insulation and performance as the brand of window you opt for. We do give window installers higher marks if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent online reviews to find the companies with the most consistent customer satisfaction. Customer satisfaction may be the most important factor, as it reflects the quality of services across most other categories, including professionalism, cost, quality of installation, quality of parts, warranty and more.
Cost
Cheaper windows certainly don’t mean better windows, but we know many of our readers would like to keep costs as low as possible. When analyzing providers’ prices, we gave higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
As discussed, windows are a substantial 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
Because of Leesburg’s climate, homeowners will want to mitigate rot, low efficiency and water damage. We factored in local experience to reflect the ability of Leesburg window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Leesburg, VA Window Replacement FAQs
What is the typical cost to install new windows in a home?
The average cost to install a window can range between $450 and $650. There are several factors that affect how much it costs, such as your property’s location, the number of windows, the materials used in designing the windows, local labor costs, styles and sizes of windows and how energy-efficient the windows are.
What are the most common types of replacement windows?
There are several different types of windows you can get for your house, including awning windows, transom windows, picture windows, slider windows, casement windows, bay windows and double-hung and single-hung windows.
When do I need to use a window installation company?
You should hire a window installation company whenever you need to replace your windows. Installing windows is a complex process that can be difficult to do on your own, so it’s best handled by the professionals.
How long does window installation typically take?
Each window takes around 30 minutes to install based on the type of window. However, the window installation can be a two-day job — or more — if you need to have a lot of windows installed.