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Best Window Replacement Companies in Potomac, MD

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  6. Potomac Window Replacement
Written By Max Peterson | Last Updated: February 05, 2024

Replacement windows can defend your home from leaks and drafts, increase its energy efficiency, and provide it with some extra charm. An experienced window contractor can help you make the most of your new windows, so you can increase their lifespan.

Top Pick
  • Full-service installation
  • Large window selection
  • Nearly 30 years of experience
Best Financing
  • Full-service installation
  • In-house, U.S.-made products
  • More than 70 years of experience
Most Customizable
  • Full-service remodeling
  • 96% satisfaction rate
  • More than 30 years of experience

Top 10 Potomac Window Installation Companies

We recommend working with one of these top installers for your window replacement in Potomac.

The This Old House Reviews Team evaluated scores of window companies in and around Potomac. We took into account the following metrics to identify the best window replacement providers:

  • Services and warranties
  • Product quality
  • Energy-efficiency guarantees
  • Professional experience and licensure
  • Customer reviews and recommendations

Champion Restoration & Construction LLC Logo

Champion Restoration & Construction

Based on 27 customer reviews.

Services Offered

Window Install & Replacement Full-Service Installations Residential Windows Commercial Windows


  • Good customer service
  • Educational website
  • Free assessment
14102 Sullyfield Cir Suite #2200, Chantilly, VA 703-718-6777 championrandc.com
Window World of Washington DC Logo

Window World of Washington DC

Based on 418 customer reviews.

Services Offered

Window Install & Replacement Storm Doors Double-Hung Bay Windows Sliding Glass Doors


  • Free assessment
  • Price transparency
  • Timely service
4116 Walney Rd Suite J, Chantilly, VA 703-378-7999 windowworlddc.com
Pella Windows & Doors of Tysons Corner Logo

Pella Windows & Doors of Tysons Corner

Based on 434 customer reviews.

Services Offered

Sliding Glass Doors Window Install & Replacement Fiberglass Frames Wood Frames Glass Doors Double-Hung Bay Windows Window Repair Vinyl Frames Pella


  • Good customer service
  • Price transparency
  • Free assessment
8150 Leesburg Pike Suite 140, Vienna, VA 301-354-3689 pellabranch.com
Roofing & More, Inc. Logo

Roofing & More

Based on 342 customer reviews.

Services Offered

Storm Doors Window Repair Window Install & Replacement Aluminum Frames Commercial Windows


  • Educational website
  • Free assessment
  • Price transparency
609 Carlisle Dr, Herndon, VA 703-546-9146 roofingandmoreinc.com
Ameritech Construction Corporation Logo

Ameritech Construction Corporation

Based on 11,000 customer reviews.

Services Offered

Window Install & Replacement Residential Windows Energy-Efficient Options


  • Price transparency
  • Free assessment
  • Good customer service
2841 Hartland Rd Ste 306, Falls Church, VA 703-783-2754 superwindows.com
Pella Windows & Doors of Gaithersburg Logo

Pella Windows & Doors of Gaithersburg

Based on 301 customer reviews.

Services Offered

Glass Doors Sliding Glass Doors Bay Windows Fiberglass Frames Wood Frames Pella Double-Hung Window Install & Replacement Window Repair


  • Educational website
  • Price transparency
  • Good customer service
202 Perry Pkwy Suite 6, Gaithersburg, MD 202-810-6722 pellabranch.com
Window Replacement DC - Reston Logo

Window Replacement DC - Reston

Based on 32 customer reviews.

Services Offered

Custom Window Designs Aluminum Frames Fiberglass Frames Skylights Mirrors Andersen Energy-Efficient Options Bay Windows Sliding Glass Doors Glass Doors Commercial Windows Storm Windows Glass Showers Window Repair Double-Hung Vinyl Frames Wood Frames Glass Repair Window Install & Replacement


  • Good customer service
  • Educational website
  • Price transparency
1890 Preston White Dr #383, Reston, VA 702-703-3190 window-replacement-dc.com
R&H Glazing Inc Logo

R&H Glazing

Based on 17 customer reviews.

Services Offered

Window Install & Replacement Energy-Efficient Options Glass Doors Vinyl Frames Bay Windows Custom Window Designs Fiberglass Frames Window Repair Commercial Windows Sliding Glass Doors


  • Good customer service
  • Educational website
  • Free assessment
10129 River Rd B 204, Potomac, MD 301-804-6459 potomacwindowreplacement.com
Window Expert Logo

Window Expert

Based on 25 customer reviews.

Services Offered

Window Install & Replacement Fiberglass Frames Pella Window Repair Bay Windows Custom Window Designs Storm Doors Wood Frames Commercial Windows Aluminum Frames Sliding Glass Doors Storm Windows Glass Doors


  • Free assessment
  • Educational website
  • Good customer service
826 Walker Rd, Great Falls, VA 571-556-4241 greatfallswindowreplacement.com

More Local Window Companies

Window Replacement DC - Tysons

User Reviews: 4.7/5 

7901 Jones Branch Dr #619
Tysons, VA 22102

Window Replacement DC - Bethesda

User Reviews: 4.7/5 

6391 Arlington Rd #202
Bethesda, MD 20814

Metropolitan Window & Glass Repair

User Reviews: 4.7/5 

3766 Howard Ave Suit 205
Kensington, MD 20895

Safety Window Glass Repair LLC

User Reviews: 4.7/5 

7529 Spring Lake Dr Unit C1
Bethesda, MD 20817

Metropolitan Glass Services

User Reviews: 4.6/5 

5142 MacArthur Blvd NW
Washington, DC 20016

Tri County Windows and Siding

User Reviews: 4.6/5 

200 Lawyers Rd NW #1629
Vienna, VA 22183

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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Facts about Potomac
Annual Energy Efficient Windows Savings: $294
Average Max Temp: 63°F
Average Min Temp: 46°F
Average Daily Sunlight: 54%
Average Annual Snowfall: 13.8"
Average Monthly Precipitation: 3.58"

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

How To Choose a Window Company in Potomac

It's crucial to find a window company that matches your individual values, needs, and preferences. Consider the following points during your search:

Window Cost by Type

Replacing your windows is a significant investment, so balancing cost with performance is important. Choosing cheap windows could actually increase your overall cost, since they come with a reduced lifespan and more intensive maintenance needs. The age of your home, in addition to the sizes, styles, and materials of windows you opt for, can influence pricing. Single-hung windows often cost less due to their straightforward style and simple mechanisms, while new skylights cost more to prepare for and install. If you're unsure, a window provider can help you determine which options are ideal for your home.

This table shows average prices for various window types to give you an idea of what to expect.

Window Types Average Cost
Arched $232-$1427
Awning $336-$937
Bay $775-$5751
Custom $345-$958
Casement $268-$1555
Double-hung $125-$809
Egress $230-$574
Glass Block $46-$581
Picture $201-$1491
Single-hung $91-$1533
Skylight $115-$1384
Sliding $264-$1342
Storm $54-$379
Transom $281-$587

Window Material Cost

You'll also need to pick a window material. Homeowners usually make their selection by considering the local climate, aesthetic preferences and energy efficiency objectives. Aluminum windows are perfect for sleek, modern designs, but they cost more up-front. Wood windows cost less up-front, but you'll need to invest in regular maintenance to prevent the frame from wear and warping. Vinyl is readily available and tends to cost less, but don't underestimate its strong durability and low maintenance needs.

Window Types Average Cost
Aluminum $54-$1533
Composite $553-$1244
Fiberglass $91-$775
Vinyl $186-$1725
Wood $276-$1555

Other Window Replacement Costs

Your contractor will factor the price for your windows and the value of their services into its total estimate. Make sure to assess the cost of labor, guarantees, and any other extra expenses that your project may require.

Experience and Training

Browse a company's website and talk to a representative to learn more about its product and service offerings, pricing, and guarantees. Many companies also keep online photo galleries that highlight past projects.

Ensure that the company specializes in window replacement. The more specialized training its staff has, and the longer it has been active, the more likely it will deliver excellent craftsmanship.

Licensing and Credentials

Window contractors and subcontractors in Maryland must carry a license from the state's Home Improvement Commission. Each candidate for a license must pass a trade and business exam, submit legal paperwork, verify insurance information, and demonstrate good financial standing.

Types of Windows Offered

No two installers offer the same window designs and materials. Look for one that specializes in the type you want for your home.

  • Awning
  • Bay
  • Bow
  • Casement
  • Crank-out
  • Custom
  • Double- or single-hung
  • Egress
  • Garden
  • Jalousie
  • Picture
  • Sliding
  • Skylight
  • Specialty
  • Storm
  • Transom
  • Vent
Equally important to your desired windows' shape is their framing. Ask your window company if it offers the frame material you want, such as vinyl, wood, fiberglass, composite, or aluminum.

Customer Feedback

Perhaps the best way to vet window companies for your job is to see what previous customers have said about them. Trustworthy sources for customer reviews include Yelp, Trustpilot, and Google Speak with people you know who have used a company you're interested in, and ask a representative for a copy of its reference list.

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Frequently Asked Questions About Window Replacement in Potomac

How much energy and money will I save by upgrading my windows?

Potomac homeowners could save up to $290 each year by upgrading to efficient windows. They'll also reduce their property's carbon dioxide emissions by 230 pounds per year.

According to the national Department of Energy, up to a third of a house's HVAC usage is to compensate for the heat or cold entering through windows. Energy-efficient windows help keep heat out in the summertime and in during the wintertime, both protecting your comfort and saving you money.

How can I fix a rotting or molding window frame?

Mold and rot often set in due to moisture issues or water damage. Fortunately, you might not need to replace your windows to solve this annoying and unsightly issue. An expert can remove the rot, restore the affected area, and reestablish the tight seal your windows need to function at their best.

What are some important metrics to know when I shop for replacement windows?

You can evaluate the quality of a replacement window by checking some important numbers, including the following:
  • Air leakage rating, which indicates how tight a window's seal is
  • Condensation resistance, which shows how a window manages moisture
  • U-factor, which determines a window's temperature-insulating capability
  • Visible transmittance, which determines how much light passes through a window
  • Solar heat gain coefficient, which measures how much heat from sunlight can pass through the window

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

More Window Resources

National Windows Company Ranking Methodology


Energy Star