20 Best Window Companies in Frederick, MD (2024 Reviews)

If you’re thinking about getting new windows, our list of the best window installation companies can help.

We analyzed all the top-rated window companies in Frederick 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 February 01, 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 replacement companies in Frederick may not seem like the most captivating article on the EcoWatch site, but trust us, windows have more of an impact on your life than you might realize. Potential leaks or drafts can cut your home’s energy efficiency by up to 30%, according to the Department of Energy. In Frederick, that’s an average of $294 per year that you could save on your electricity bills by making the switch.

Replacement windows improve your home’s insulation, not only making you and your family more comfortable during extreme temperatures, but also saving you money and helping the environment.

We’ve made a list of the best installation companies to help you in your research, so you can not only take advantage of brand-new windows, but also save money on your power bills.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Frederick

The EcoWatch team assessed many window providers across Frederick to narrow our list down to the top ones. The companies we’ve included in this article scored best in our categories, including energy-efficient offerings, customer service, price, availability and more.

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 has the best availability in Frederick. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of experience in the window installation business.

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 Windows

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. Not all of Andersen’s windows 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 Frederick?

Andersen does not display prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. For more detailed information on pricing, you can receive a quote from the company.

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 has windows expertise in Frederick. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has around 27 years of experience in the window installation business.

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 Windows

Its 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 windows are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.

How much does Window World cost in Frederick?

Window World does not display prices on its website, but it's known for offering some of the most affordable window installations around. For more detailed information on pricing, you can receive a quote from the company.

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 has the best residential windows in Frederick. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has around 16 years of experience in the window installation business.

It gives customers the opportunity to view products and to speak to a representative in person in its showrooms.

Energy Efficiency of Window Nation Windows

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. Not all of Window Nation’s windows are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.

How much does Window Nation cost in Frederick?

Window Nation does not display prices on its 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. For more detailed information on pricing, you can receive a quote from the company.

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 has the best window installation for businesses in Frederick. 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 around 23 years of experience in the window installation business.

It installs windows and doors at businesses across the Eastern U.S.

Energy Efficiency of Aeroseal Windows Windows

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. Not all of Aeroseal’s windows are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.

How much does Aeroseal Windows cost in Frederick?

Aeroseal does not display prices on its website, but it provides high-quality windows at a competitive price point. For more detailed information on pricing, you can receive a quote from the company.

We’ve recommended installers with good reputations, but keep in mind these are national companies, so the quality of service may vary depending on your local crew. We have tried to stay unbiased and transparent by listing pros and cons for every company we reviewed.

More Window Companies in Frederick

Renewal by Andersen of Capital Region - Sterling

Sterling, VA
4.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Commercial Windows
  • Service icon Sliding Glass Doors
  • Service icon Andersen
  • Service icon Skylights
  • Service icon Bay Windows

Website: https://www.renewalbyandersen.com/window-company/085-capital-region/retailer
Address: 45449 E Severn Way #149, Sterling, VA 20166
Phone: (703) 204-4595

Window World of Frederick County

Frederick, MD
4.1
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Storm Doors
  • Service icon Commercial Windows
  • Service icon Energy-Efficient Options
  • Service icon Vinyl Frames
  • Service icon Window Install & Replacement
  • Service icon Double-Hung
  • Service icon Sliding Glass Doors
  • Service icon Bay Windows

Website: https://www.windowworldfrederickmd.com/
Address: 8415 Progress Drive Suites A-C, Frederick, MD 21701
Phone: (301) 663-0699

Champion Replacement Windows of Baltimore

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

Services Offered

  • Service icon Storm Doors
  • Service icon Bay Windows
  • Service icon Sliding Glass Doors
  • Service icon Double-Hung
  • Service icon Window Repair
  • Service icon Window Install & Replacement

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

Window Nation

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

Services Offered

  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Window Install & Replacement
  • Service icon Wood Frames
  • Service icon Sliding Glass Doors
  • Service icon Triple Pane Glass
  • Service icon Bay Windows

Website: https://www.windownation.com/baltimore-showroom/
Address: 871 Cromwell Park Dr, Glen Burnie, MD 21061
Phone: (410) 766-8488

Glass & Mirror Services, Inc.

Frederick, MD
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Repair
  • Service icon Glass Repair
  • Service icon Window Install & Replacement
  • Service icon Custom Glass
  • Service icon Aluminum Frames
  • Service icon Commercial Windows
  • Service icon Glass Showers
  • Service icon Stained Glass
  • Service icon Mirrors

Website: http://www.glassandmirrorservices.com/
Address: 5740 Industry Ln, Frederick, MD 21704
Phone: (301) 662-0026

MDVA Windows

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

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Window Repair

Website: http://www.mdvawindows.com/
Address: 12828 Clarksburg Square Rd UNIT 304, Clarksburg, MD 20871
Phone: (240) 887-2908

C3 American Exteriors

Mt Airy, MD
3.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Commercial Windows
  • Service icon Aluminum Frames
  • Service icon Fiberglass Frames
  • Service icon Window Repair
  • Service icon Window Install & Replacement

Website: https://www.c3america.com/
Address: 5070 Old Bartholows Rd, Mt Airy, MD 21771
Phone: (410) 709-6596

R&H Glazing Inc

Frederick, MD
3.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

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

Website: https://frederickwindowreplacement.com/
Address: 7822 Wormans Mill Rd suite f, Frederick, MD 21701
Phone: (240) 998-8276

Tnt Service Group Inc

Frederick, MD
3.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Commercial Windows
  • Service icon Marvin
  • Service icon Andersen
  • Service icon Aluminum Frames
  • Service icon Fiberglass Frames
  • Service icon Window Install & Replacement

Website: https://www.tntservicesgroup.com/
Address: 3958 Dartmouth Ct A, Frederick, MD 21703
Phone: (301) 874-8400

Milcon Design & Build

Waterford, VA
5
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Window Repair

Website: http://milcondesignandbuild.com/
Address: 40413 Stonebrook Hamlet Pl, Waterford, VA 20197
Phone: (703) 581-2761

Pella Windows & Doors of Gaithersburg

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

Services Offered

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

Website: http://www.pellabranch.com/washington-dc/showrooms/gaithersburg
Address: 202 Perry Pkwy Suite 6, Gaithersburg, MD 20877
Phone: (202) 810-6722

C2 Operations

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

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Residential Windows

Website: https://c2operations.com/
Address: 18 Sycolin Rd SE, Leesburg, VA 20175
Phone: (703) 651-6677

Affordable Glass Inc

Thurmont, MD
2.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Repair
  • Service icon Storm Doors
  • Service icon Mirrors
  • Service icon Commercial Windows
  • Service icon Glass Repair
  • Service icon Window Install & Replacement
  • Service icon Glass Showers

Website: https://www.affordableglassmd.com/
Address: 13503 Blue Mountain Rd, Thurmont, MD 21788
Phone: (240) 288-8070

Potomac View Energy

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

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Glass Doors
  • Service icon Double-Hung
  • Service icon Sliding Glass Doors
  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Vinyl Frames
  • Service icon Fiberglass Frames
  • Service icon Wood Frames

Website: https://potomacviewenergy.com/
Address: 7520 Main St #201, Sykesville, MD 21784
Phone: (443) 881-8538

Replacement Windows and Doors-Homerite Waynesboro

Waynesboro, PA
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Install & Replacement

Website: http://www.homeritewaynesboro.com/
Address: 700 S. Potomac St *SHOWROOM 12-4. CALL ANYTIME*, Waynesboro, PA 17268
Phone: (717) 749-4874

Tri-State Screens

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

Services Offered

  • Service icon Storm Doors
  • Service icon Window Install & Replacement

Website: http://www.tristatescreens.com/
Address: 104 N Bailey Ln, Purcellville, VA 20132
Phone: (540) 751-1269

Capital Remodeling, Inc.

Gaithersburg, MD
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Install & Replacement

Website: http://www.capitalremodeling.com/
Address: 555 Quince Orchard Rd #210, Gaithersburg, MD 20878
Phone: (800) 310-7154

Gaithersburg Glass Company

Gaithersburg, MD
3.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Glass Showers
  • Service icon Mirrors
  • Service icon Glass Doors
  • Service icon Custom Window Designs
  • Service icon Roof Windows
  • Service icon Window Install & Replacement
  • Service icon Custom Glass
  • Service icon Sliding Glass Doors
  • Service icon Storm Windows
  • Service icon Window Repair
  • Service icon Storm Doors

Website: http://www.gburgglass.com/
Address: 19200 Chennault Way, Gaithersburg, MD 20879
Phone: (301) 948-2623

Conrey Construction

Marriottsville, MD
4.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Install & Replacement

Website: http://www.conrey-construction.com/
Address: 1575 Marriottsville Rd, Marriottsville, MD 21104
Phone: (800) 640-0066

Safety Window Glass Repair LLC

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

Services Offered

  • Service icon Glass Doors
  • Service icon Sliding Glass Doors
  • Service icon Window Install & Replacement
  • Service icon Window Repair
  • Service icon Triple Pane Glass
  • Service icon Glass Repair
  • Service icon Commercial Windows
  • Service icon Custom Glass
  • Service icon Skylights
  • Service icon Tempered Glass
  • Service icon Glass Showers
  • Service icon Double-Hung
  • Service icon Bay Windows
  • Service icon Mirrors

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

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

There are several benefits of upgrading to energy-efficient windows. Some reasons you may want to consider making the switch are the following:

  • Protect your investment: When you have an older home, your windows could also be outdated or drafty. Upgrading and repairing your windows is an important part of maintaining your property and its real estate value.
  • Reduce your carbon footprint: By using less energy after upgrading to Energy Star certified windows, you’ll also be reducing your indirect greenhouse gas emissions by about 12%, according to Energy Star.
  • Save on power bills: According to the Department of Energy, heat gained or lost through windows makes up around 25-30% of household energy use. Switching to energy-efficient models can help lower how much energy is used in your home, therefore saving you about 12% more on your bills.
  • Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.

Estimated Cost of Window Replacement in Frederick

When researching window installation, each company offers different services and prices. Let’s go over some typical costs and services.

How Much Do New Windows Cost?

According to our market research, the national average cost of replacing a single window is around $600. However, window installation costs can range from $200 to $1,200 per window. But costs differ remarkably depending on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window installers also offer door replacements, which will make your project cost more.

Bear in mind that energy-efficient windows may cost more upfront, but Energy Star estimates the upgrade will save you between $101 and $583 a year when installing single-pane windows and between $27 and $197 per year when replacing double-pane, clear glass windows. These savings vary depending on your local climate, energy rates and individual home characteristics.

Something else that affects the total cost is the material you select for your frame. Aluminum frames are typically the least pricey and are sturdy and light, but they provide poor insulation. On the other hand, wood frames cost the most, as they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.

What Services do Window Installers Offer?

The first question to ask yourself when planning to replace your windows is: Do you need a full-frame installation or a pocket installation?

Full-frame installations entail replacing the full window, including the trim, sill and frame. You most likely need a full-frame installation when you want a new style or your window has noticeable damage or rot. Because these installations are more involved, they will increase the overall cost. Pocket installations (or retrofits) entail installing a new window within the existing frame, which makes pocket installations less labor-intensive and costly. However, if the frame has any damage or rot, you should opt for a full-frame installation instead.

Your window installer can help you choose which type of installation you need.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

How We Choose the Best Window Installers in Frederick

EcoWatch reviews are different from other reviews because we evaluate these companies through a sustainability lens. Along with energy efficiency, we evaluated several window installers in Frederick and assigned rankings using the following methodology:

Service Area

Since this is a guide for Frederick, we gave more points to companies that serve the city. There are other reputable providers that didn’t make our list because they wouldn’t be able to serve homeowners in Frederick.

Work Quality

We’re willing to bet that you’re looking for a company to do a great job installing windows. We’ve vetted each company included in our guide to make sure its contractors are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.

Customer Reviews

Customer feedback is another super important review factor. If the majority of customers don’t have good feedback about their service from a certain installer, you won’t see it featured on EcoWatch.

Cost

Cheaper windows certainly don’t mean better windows, but we know many of our readers want to keep costs as low as possible. When analyzing the prices of providers, we awarded higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.

Warranty

Protecting your investment in new windows is important to many homeowners. That’s why window installation companies that have lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

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

Frederick, MD Window Replacement FAQs

How much should window installation cost?

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

Which kind of window is the best?

A window’s energy efficiency is influenced by a variety of factors, such as the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are often the most energy-efficient since they are certified by the U.S. Department of Energy.

When do I have to use a window installation company?

Unless you have experience with home improvement projects and have all the necessary tools to replace your own windows, we recommend hiring a professional installer. The window installation process is quite involved and can take anywhere from four to six hours for one 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.

When is it time to replace your windows?

Windows generally have a lifespan of around 20 to 30 years, but anytime you see damage on your windows, it’s a good idea to have an expert take a look at them to see if they are in need of a repair or replacement.

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