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Best Window Replacement Companies in Frederick, MD

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  3. Window Replacement
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  5. Frederick
Written By Max Peterson|Last Updated: April 18, 2024

You might be installing replacement windows to upgrade your home's design, use less energy, or protect your home from the rain and gusty winds. Local installers recognize that homeowners would rather not pay a pretty penny for window replacement in Frederick. They work with affordable materials that don't sacrifice durability.

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 Frederick Window Installation Companies

The contractors on this list will make window replacement in Frederick as painless as possible.

Frederick residents can trust the This Old House Reviews Team to provide relevant, up-to-date window installer recommendations. To identify the best providers, we consider these five factors:

  • Product quality
  • Services and warranties
  • Professional experience and licensure
  • Customer reviews and recommendations
  • Energy-efficiency guarantees
Champion Replacement Windows of Baltimore Logo

Champion Replacement Windows of Baltimore

Based on 44 customer reviews.

Services Offered

Bay WindowsDouble-HungWindow Replacement/installationGlass Doors


  • Free assessment
  • Price transparency
  • Good customer service
23 Fontana Ln, Rosedale, MD 410-202-8636 championwindow.com
Window World of Frederick County Logo

Window World of Frederick County

Based on 45 customer reviews.

Services Offered

Glass DoorsVinyl FramesEnergy-Efficient OptionsWindow Replacement/installationBay WindowsDouble-Hung


  • Price transparency
  • Good customer service
  • Free assessment
8415 Progress Drive Suites A-C, Frederick, MD 301-663-0699 windowworldfrederickmd.com
Glass & Mirror Services, Inc. Logo

Glass & Mirror Services

Based on 64 customer reviews.

Services Offered

Glass ShowersMirrorsWindow Replacement/installationEnergy-Efficient OptionsCustom GlassMetal FramesGlass Repair


  • Price transparency
  • Good customer service
  • Free assessment
5740 Industry Ln, Frederick, MD 301-662-0026 glassandmirrorservices.com
Tnt Service Group Inc Logo

Tnt Service Group

Based on 19 customer reviews.

Services Offered

Window Replacement/installation


  • Good customer service
  • Free assessment
  • Educational website
3958 Dartmouth Ct A, Frederick, MD 301-874-8400 tntservicesgroup.com
MDVA Windows Logo

MDVA Windows

Based on 60 customer reviews.

Services Offered

Window Replacement/installationWindow RepairGlass Doors


  • Free assessment
  • Price transparency
  • Educational website
12828 Clarksburg Square Rd Unit 304, Clarksburg, MD 240-887-2908 mdvawindows.com
Milcon Design & Build Logo

Milcon Design & Build

Based on 30 customer reviews.

Services Offered

Glass DoorsWindow Replacement/installation


  • Price transparency
  • Free assessment
  • Educational website
40413 Stonebrook Hamlet Pl, Waterford, VA 703-581-2761 milcondesignandbuild.com
Pella Windows & Doors of Gaithersburg Logo

Pella Windows & Doors of Gaithersburg

Based on 372 customer reviews.

Services Offered

Wood FramesWindow Replacement/installationGlass DoorsDouble-Hung


  • Good customer service
  • Educational website
  • Price transparency
202 Perry Pkwy Suite 6, Gaithersburg, MD 202-810-6722 pellabranch.com
C2 Operations Logo

C2 Operations

Based on 231 customer reviews.

Services Offered

Glass DoorsWindow Replacement/installationDouble-Hung


  • Good customer service
  • Free assessment
  • Educational website
18 Sycolin Rd Se, Leesburg, VA 703-651-6677 c2operations.com
B T Window & Doors LLC Logo

B T Window & Doors

Based on 25 customer reviews.

Services Offered

Glass DoorsBay WindowsEnergy-Efficient OptionsWindow Replacement/installationCustom Window Designs


  • Price transparency
  • Educational website
  • Free assessment
4310 Jefferson Ave, Sykesville, MD 410-336-1945 btwindowanddoors.com

More Local Window Companies

Potomac View Energy

User Reviews: 4.7/5 

7520 Main St #201
Sykesville, MD 21784

Capital Remodeling, Inc.

User Reviews: 4.2/5 

555 Quince Orchard Rd #210
Gaithersburg, MD 20878

Gaithersburg Glass Company

User Reviews: 4.1/5 

19200 Chennault Way
Gaithersburg, MD 20879

Replacement Windows and Doors-Homerite Waynesboro

User Reviews: 4.7/5 

700 S. Potomac St *SHOWROOM 12-4. CALL ANYTIME*
Waynesboro, PA 17268

Tri-State Screens

User Reviews: 4.6/5 

104 N Bailey Ln
Purcellville, VA 20132

Hagerstown Paint and Glass Company, Inc.

User Reviews: 4.0/5 

18136 Oak Ridge Dr
Hagerstown, MD 21740

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 Frederick
Annual Energy Efficient Windows Savings:$294
Average Max Temp:62°F
Average Min Temp:45°F
Average Daily Sunlight:54%
Average Annual Snowfall:31.1"
Average Monthly Precipitation:3.67"

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 Frederick

Each window provider has varying offerings and approaches. To ease the company search, keep these factors in mind:

Window Cost by Type

When it comes to window replacement, value is key. Each window you replace should provide optimal durability at a reasonable price point. Choosing cheap windows could actually increase your overall cost, since they come with a shorter lifespan and more intensive maintenance needs. The material, size, and style of your new windows are the most significant factors in your final cost. Simple double-hung windows deliver great value with their straightforward style and simple mechanisms, while a sweeping, custom-size picture window will cost more. It's recommended to consult a trusted window installer to decide on your best options.

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

Window TypesAverage Cost
Glass Block$47-$597

Window Material Cost

Window prices also vary based on material. Each option offers different benefits depending on your climate and energy efficiency needs. Vinyl and fiberglass are readily-available materials, so they tend to cost less. Likewise, composites and aluminum look sleek and stay strong against the elements, so they tend to cost more.

Window TypesAverage Cost

Other Window Replacement Costs

Ask each company you're considering about labor costs, warranty fees, and permit fees. This will help you gain a complete understanding of the total costs involved in the project.

Experience and Training

The longer a window company has been in business, the better its workmanship will likely be. Talk with a company representative to learn more about its experience, guarantees, and public and private credentials. Company websites often have photo galleries showing off previous work technicians have done.

Licensing and Credentials

Window specialists and subcontractors in Maryland must carry a license from the state's Home Improvement Commission. Each applicant for a license must successfully complete a test on business and trade practices, submit business filings, verify surety bond information, and show financial responsibility.

Types of Windows Offered

There are many replacement window types you can choose from, and it's vital to find a company that specializes in the ones you want. Check a company's website and reviews for any of these types:

Finally, pay close attention to the framing materials that a window company uses. Each window frame material has a different energy efficiency level, price point and life span. A company will usually specify whether the windows they install use metal, fiberglass, wood, vinyl, or composite.

Customer Feedback

Perhaps the best way to vet window companies for your job is to find out what previous customers have said about them. You can find customer reviews on websites like Yelp, the BBB, Google, and Trustpilot. 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 Frederick

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

In Frederick specifically, most homeowners using efficient windows lower their carbon emissions by 400 pounds each year. This means they save $290 on their annual electricity costs.

The U.S. Department of Energy states that 25%–30% of a home's heating and cooling capacity is used to compensate for heat gain and heat loss through windows. By upgrading to new, more efficient windows, you can enhance your home's energy efficiency and lower your electricity bills.

I've heard there are tax credits for energy-efficient windows. How much could I save?

Yes. No matter where you're located, you can claim a federal tax credit of up to $3,200 per year on up to 30% of your window replacement's cost. Further, most state and some local jurisdictions offer tax breaks of their own. We recommend consulting your local government for specific information about tax incentives available in your area.

I broke my window's glass. Could I replace just the glass?

If you broke your window's glass, you might not need to replace the whole thing. In many cases, you can simply swap out the shattered glass pane without having to replace the entire window structure. However, it's best to consult a professional to assess the best course of action for your specific situation.

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