30 Best Window Replacement Companies in Frederick, MD (2023 Reviews)
Window Companies Near Me
Thinking about upgrading your home's windows? We've got you covered in this guide to the top window installation companies.
We analyzed all the top window installers in Frederick and selected the top 30 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated March 14, 2023
Why you can trust EcoWatch
The EcoWatch team is all about helping Frederick homeowners find eco-conscious solutions for their homes. If your windows are outdated or drafty, you could be losing 25-30% of your home's heat or cool air out of them.
Thankfully, helping you save energy with efficient windows also helps our goals of reducing energy usage for the environment.
Because windows have such a great impact on your home, choosing the best company for you is a big choice to make. That's why the EcoWatch team has created this list of the best window replacement companies, so you can more easily make an informed decision.
Best Affordability
Window World
- Low prices relative to competitors
- EnergyStar Partner
- Great industry reputation
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Award-winning company
- Great industry reputation
- Manufactures products in-house
- No lifetime warranty
Best for Residential Windows
Window Nation
- Manufactures products in-house
- Wide variety of products and services
- Custom designs
- Installation not covered by warranty
Best Window Replacement Companies in Frederick
The EcoWatch team researched dozens of providers that service the Frederick area to find the best window installation companies by our standards. The companies mentioned in this article passed our review standards for energy-efficient offerings as well as local expertise, price, customer service and beyond.

Window World
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Low prices relative to competitors
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EnergyStar Partner
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Great industry reputation
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Quality of service will depend on your area
Window World is the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window installation industry for around 27 years. Hundreds of positive reviews from customers online back the company's reputation.
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 Frederick?Window World doesn't have any cost information displayed on its website, but it's known for offering some of the most affordable window installations around. Requesting a free quote on its website is the best way to get more accurate pricing information.

Renewal by Andersen
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Award-winning company
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Great industry reputation
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Manufactures products in-house
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No lifetime warranty
Renewal by Andersen has the best availability in Frederick. Andersen has around 27 years of experience in the window replacement sector.
It has established itself as 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 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 make sure you mention that you'd like Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Frederick?Pricing information is not available on Andersen's website because the cost of window installment varies greatly 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. For more detailed information on pricing, you can request a quote from the company.

Window Nation
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Manufactures products in-house
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Wide variety of products and services
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Custom designs
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Installation not covered by warranty
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 been in the window business for around 16 years. Its reputation is backed by several positive reviews from customers online.
You may want to consider going with 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 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 Frederick?Window Nation does not mention 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. The best way to know for sure is to get a free quote from the company.

Aeroseal Windows
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Many years of experience
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Great industry reputation
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Low number of customer complaints
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Manufactures products in-house
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Custom Designs
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No lifetime warranty
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Not ideal for residential installations
Aeroseal Windows provides 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 industry. Its reputation is backed by several positive reviews on customer review websites.
It has established itself as a company that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows is an Energy Star partner and offers a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company's windows are Energy Star certified, so be sure to mention that you want energy-efficient windows to your Aeroseal representative when inquiring about services.
How much does Aeroseal Windows cost in Frederick?Pricing information is not available on Aeroseal's website since the cost of window replacement varies greatly based on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. Requesting a free quote on its website is the best way to get more accurate information.
We aim to be unbiased and transparent by describing pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.
More Window Replacement Companies in Frederick
Four Seasons Roofing
Owings Mills, MD-
Educational Website
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Arrives on Time
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Price Transparency
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Consistent Workmanship
Services Offered
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Residential Windows
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Architectural Glass
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Bay Windows
Alliance Homes Inc Window Installation
Bethesda, MD-
Reliable Service
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Good Customer Service
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Award-Winning
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Price Transparency
Services Offered
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Residential Windows
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Energy-Efficient Options
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Doors
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
Renewal by Andersen of the Capital Region
North Bethesda, MD-
No-fee Quotes
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Award-Winning
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No-Hassle Pricing
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Good Customer Service
Services Offered
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Custom Windows
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Commercial Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay & Bow Windows
Safety Window Glass Repair LLC
Bethesda, MD-
No-Hassle Pricing
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Free Quotes
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Consistent Workmanship
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Excellent Customer Service
Services Offered
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Residential Windows
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Fast Delivery
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Tempered Glass
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Custom Window Designs
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Full-Service Installations
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Business Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Renewal by Andersen of Capital Region - Sterling
Sterling, VA-
Excellent Customer Service
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Arrives on Time
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Educational Website
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Free Quotes
Services Offered
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Custom Window Designs
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Commercial Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay & Bow Windows
Care Contracting
Leesburg, VA-
No-Hassle Pricing
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Excellent Customer Service
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Reliable Appointment Windows
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Helps Educate Customers
Services Offered
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Residential Windows
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Architectural Glass
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Tempered Glass
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Custom Windows
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Business Windows
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Double-Hung
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Sliding Glass
Renewal by Andersen of Capital Region - Sterling
Sterling, VA-
Good Customer Service
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Consistent Workmanship
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Helps Educate Customers
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Free Quotes
Services Offered
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Custom Window Designs
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Business Windows
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Double-Hung
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Stained Glass
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Sliding Glass
S&K Roofing, Siding and Windows
Eldersburg, MD-
Helps Educate Customers
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Reliable Service
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No-fee Quotes
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Locally Recognized for Quality
Services Offered
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Residential Windows
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Architectural Glass
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Energy-Efficient Options
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Custom Window Designs
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Commercial Windows
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Double-Hung
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Sliding Glass
S&K Roofing, Siding and Windows
Sterling, VA-
Award-Winning
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Excellent Customer Service
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Educational Website
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Dependable Service
Services Offered
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Residential Windows
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Architectural Glass
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Energy-Efficient Options
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Custom Window Designs
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Business Windows
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Double-Hung
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Sliding Glass
Mr. Handyman of Greater Frederick and Hagerstown
Frederick, MD-
Reliable Appointment Windows
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Reliable Service
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Award-Winning
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No-Hassle Pricing
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Double-Hung
Winfield Builders
Olney, MD-
Excellent Customer Service
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No-fee Quotes
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Reliable Appointment Windows
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Consistent Workmanship
Services Offered
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Custom Windows
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Residential Windows
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Architectural Glass
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Double-Hung
Remodel Rx Premier Roofing
Columbia, MD-
Reliable Service
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Excellent Customer Service
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No-Hassle Pricing
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Award-Winning
Services Offered
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Residential Windows
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Energy-Efficient Options
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Custom Window Designs
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Double-Hung
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Sliding Glass
Window Replacement DC - Bethesda
Bethesda, MD-
Free Quotes
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Educational Website
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Excellent Customer Service
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Price Transparency
Services Offered
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Residential Windows
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Architectural Glass
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
Window Replacement DC - Reston
Reston, VA-
Helps Educate Customers
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No-fee Quotes
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Excellent Customer Service
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No-Hassle Pricing
Services Offered
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Residential Windows
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Architectural Glass
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
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Sliding Glass
Clear View glass & mirror
Ashburn, VA-
Consistent Workmanship
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No-fee Quotes
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Helps Educate Customers
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Good Customer Service
Services Offered
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Glass Showers
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Residential Windows
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Doors
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Custom Windows
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Commercial Windows
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Sliding Glass
Glass & Mirror Services, Inc.
Frederick, MD-
No-Hassle Pricing
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Free Quotes
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Dependable Service
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Excellent Customer Service
Services Offered
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Residential Windows
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Glass Showers
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Stained Glass
Supreme Glassworks Inc.
Sterling, VA-
Educational Website
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Excellent Customer Service
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Price Transparency
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No-fee Quotes
Services Offered
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Doors
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Full-Service Installations
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Custom Windows
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Residential Windows
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Business Windows
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Aluminum Window Frames
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Architectural Glass
KELEMER BROTHERS REPLACEMENT WINDOWS
Silver Spring, MD-
No-fee Quotes
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Reliable Service
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Locally Recognized for Quality
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Good Customer Service
Services Offered
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
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Double-Hung
Four Seasons Home Improvement
Derwood, MD-
Consistent Workmanship
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Helps Educate Customers
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No-Hassle Pricing
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Free Quotes
Services Offered
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Custom Windows
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Residential Windows
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Energy-Efficient Options
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Business Windows
S&K Roofing, Siding and Windows
Eldersburg, MD-
No-Hassle Pricing
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Reliable Service
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Award-Winning
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No-fee Quotes
Services Offered
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Custom Windows
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Residential Windows
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Energy-Efficient Options
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Commercial Windows
American Home Contractors
Fulton, MD-
Free Quotes
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No-Hassle Pricing
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Locally Recognized for Quality
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Educational Website
Services Offered
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Doors
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Custom Window Designs
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Aluminum Window Frames
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Business Windows
One Source Window Systems
Columbia, MD-
Educational Website
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Price Transparency
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Free Quotes
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Consistent Workmanship
Services Offered
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Energy-Efficient Options
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Custom Window Designs
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Business Windows
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Double-Hung
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Sliding Glass
Home Services at The Home Depot
Aspen Hill, MD-
Excellent Customer Service
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Helps Educate Customers
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Reliable Service
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Price Transparency
Services Offered
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Residential Windows
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Fast Delivery
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Custom Window Designs
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Aluminum Window Frames
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Business Windows
Diligent Roofing & Siding
Mt Airy, MD-
No-fee Quotes
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Dependable Service
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Excellent Customer Service
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Price Transparency
Services Offered
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Residential Windows
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Fast Delivery
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Custom Windows
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Commercial Windows
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Double-Hung
The Neikirk Company LLC
Hagerstown, MD-
No-Hassle Pricing
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Educational Website
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Award-Winning
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Good Customer Service
Services Offered
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Residential Windows
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Custom Window Designs
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Aluminum Window Frames
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Business Windows
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Sliding Glass
Premier Windows & Glass
Rockville, MD-
Arrives on Time
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Educational Website
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Price Transparency
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Consistent Workmanship
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
Window World of Frederick County
Frederick, MD-
Consistent Workmanship
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Price Transparency
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Free Quotes
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Excellent Customer Service
Services Offered
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Custom Window Designs
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Sliding Glass
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Double-Hung
Absolute Home Solutions, Inc.
Middletown, MD-
Educational Website
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Excellent Customer Service
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Reliable Service
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Price Transparency
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
Homefix Custom Remodeling
Vienna, VA-
No-fee Quotes
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Educational Website
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Award-Winning
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Good Customer Service
Services Offered
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Custom Windows
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Sliding Glass
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Double-Hung
Potomac View Energy
Sykesville, MD-
Helps Educate Customers
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Reliable Service
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No-fee Quotes
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No-Hassle Pricing
Services Offered
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Custom Windows
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Sliding Glass
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Double-Hung
How Installing Energy-Efficient Windows in Frederick Saves You Money
By switching to energy-efficient windows, you can enjoy several benefits, such as:
- Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
- Decrease your carbon footprint: By using less energy once you upgrade to energy-efficient windows, you'll also be cutting your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Protect your investment: The older your home is, the more likely it is that getting new windows will benefit you. Older homes usually have windows that are outdated, drafty or maybe even damaged in some way. Upgrading your windows could help increase the value of your home if you decide to sell.
- Save on electricity bills: The Department of Energy estimates that heat gained or lost via windows makes up around 25-30% of residential energy use. Upgrading to energy-efficient windows can help reduce that number, which helps you save $294 a year on your bills.
Estimated Cost of Window Replacement in Frederick
When looking into window installation, each company offers different services and costs. Let's take a look at some typical costs and services.
How Much Do New Windows Cost?
According to our 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. These numbers vary depending on specific characteristics of your installation, like number of windows, type, size, material, the location of your home and more.
It's also worth keeping in mind that energy-efficient windows will almost always cost more upfront, but Energy Star predicts that switching out the windows on your Frederick home translates to an average energy savings of $236 to $319 a year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. How much you'll save by switching to energy-efficient windows depends on your local climate, energy rates and other factors unique to your home.
We recommend requesting free quotes from multiple window installation companies to find the right windows and the company that works best for you.
What Services do Window Installers Offer?
The first step when considering a window installation is to figure out whether you need a full-frame or pocket installation.
A full-frame installation is a replacement of the full window. It involves taking out the old window, the sill, and the exterior and interior trim. It also involves other materials, including insulation and drip edges, which raise the total cost of the project. It's also worth noting that it's not uncommon for homeowners to have to touch up the paint surrounding the window after a full-frame installation. Pocket installations (also known as retrofits) are when you replace a window within its existing frame. Pocket installations are on the simpler end and won't carry as large a bill, but you can't do this type of installment if you have any pre-existing rot or water damage.
Your window installation company will be able to help you choose what's best for your needs. In Frederick, the decision will mostly be based on the age of your home and if there's any damage. Wood can decay if not maintained properly over the years, so it's good to have a professional examine your frames and window sills.
Best Affordability
Window World
- Low prices relative to competitors
- EnergyStar Partner
- Great industry reputation
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Award-winning company
- Great industry reputation
- Manufactures products in-house
- No lifetime warranty
Best for Residential Windows
Window Nation
- Manufactures products in-house
- Wide variety of products and services
- Custom designs
- Installation not covered by warranty
How We Choose the Best Window Installers in Frederick
In our hunt to find the most reliable, eco-friendly window installers in Frederick, the EcoWatch Reviews team examined many companies before settling on these. Along with energy efficiency, we analyzed window companies all across the state and ranked them using the following methodology:
Service Area
Because this is a guide for Frederick, we gave more points to companies that serve the city. There are certainly other reputable providers that didn't make our list because of the low odds that they would serve the average homeowner in Frederick.
Work Quality
When selecting new windows, the quality and range of services often plays just as important of a role in insulation and performance as the brand of window you opt for. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
Customer feedback is another very important review factor. If the majority of customers don't have nice things to say about their service from a certain installer, it won't be featured on EcoWatch.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers want to keep costs low when possible. When analyzing providers' prices, we gave 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 give you lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Because of Frederick's climate, homeowners will want to mitigate water damage, rot 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 does a window install cost?
The typical cost of replacing one window ranges from $450 to $650. There are many factors that influence how much it costs, such as the number of windows, your property's location, local labor costs, how energy-efficient the windows are, styles and sizes of windows and the materials used in designing the windows.
What are the most common types of replacement windows?
There are various types of windows you can get for your house, including casement windows, slider windows, transom windows, picture windows, awning windows, double-hung and single-hung windows and bay windows.
What do window installers do?
Window installation companies will do the entire process — from replacing old windows with brand new ones to cleaning up after the windows have been put in place. In addition, some companies offer window manufacturing, customization and repairs.
How long does it take to install windows?
Since the average installation time is 30 minutes per window, around 16 windows can be installed during a typical 8-hour work day.
What time of year is the best time to replace my windows?
Though you can install windows any time of year, warmer weather is usually better for installing replacement windows. In addition, it shouldn't be raining, since rain can make the installation more difficult.