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Frederick County Window Replacement Services

In an Hour or Less! In an Hour or Less!

Award-Winning Since 1986
Reputation of Excellence
BBB
Angie's List
Porch Award
Energy Star
Good Housekeeping
Earthwise
Lead-Safe EPA
BBB
Angie's List
Porch Award
Energy Star
Good Housekeeping
Earthwise
Lead-Safe EPA

The Best Windows for the Best Prices in Frederick County Since 1986

Top-Quality Windows in Any Shape or Style.

Since 1986, we've been known for providing the highest quality new and replacement windows in all shapes and styles. Whether you need casement windows, double-hung windows, sliders, bay windows, bow windows, custom windows, or anything else – we've got you covered. Contact us to get your free quote today!

In an Hour or Less! In an Hour or Less!

Buy The Best Windows for the Best Prices in MD & VA
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Check Out Our Models

Frederick County Replacement Windows Tailored to Your Home

Why Choose WeatherMaster

Every window ordered from WeatherMaster Windows is custom built to your exact specifications. There are unique challenges with nearly every new and replacement window installation job in Frederick County, and we embrace those challenges with world-class craftsmanship and custom solutions.

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Before & After

Before & After
Before & After
Before & After
Before & After
Before & After
Before & After
Before & After
Before & After
Before & After
Before & After
Before & After
Before & After
Before & After

Commercial and residential properties have been calling the window installation specialists at WeatherMaster Window for over 30 years.

We specialize in replacement windows and custom window services in Frederick County, offering a wide variety of window styles, including:

  • Architectural windows
  • Customized windows
  • Double hung windows
  • Horizontal sliders
  • Bay and box windows
  • Casement windows
  • Eyebrow windows
  • Half-round windows
  • Glass block windows
  • Three section slider windows
  • Hopper and awning windows
  • And more

In addition, the WeatherMaster Insulator Series are known as the most energy-efficient windows in Frederick County and beyond. Made from the highest quality components, our Insulator Series feature a fiberglass and polyfoam filled frame, galvanized steel or rigid fiberglass reinforcement, double-strength glass, the Insulator glass package and ENERGY STAR certification.

WeatherMaster also provides window framing services provided by our factory-trained professionals who will help pick out the best framing option for your needs:

  • Wooden window frames for classic renovations
  • Aluminum frames or aluminum reinforced vinyl frames for commercial properties
  • Low-maintenance, superior-insulated fiberglass and vinyl frames for the tightest of seals

All of our window replacement services and professional window installations are backed by our 110% lowest price guarantee. And with our transparent pricing policy guarantees, you can rest assured that you will only be charged for the work that was done.

Towns Served

Frederick, Ijamsville, Thurmont, Walkersville, Emmitsburg


Riley T (Verified Buyer)
I was very happy with the team who did the windows. I have already recommended WeatherMaster to someone.
– Riley T (Verified Buyer) 5 stars
George B (Verified Buyer)
The Windows and storm door look great. You can tell the work was very professional and neat.
– George B (Verified Buyer) 5 stars
Kayla S  (Verified Buyer)
The process was painless an efficient the entire time and the staff was friendly.
– Kayla S (Verified Buyer) 5 stars
Thomas & Jessica C (Verified Buyer)
From the consultation to the installation, everyone was very knowledgeable and professional.
– Thomas & Jessica C (Verified Buyer) 5 stars
Brian & Letizia S June 16, 2021 (Angie’s List)
Great company to deal with. Good customer service and attention to detail!
– Brian & Letizia S June 16, 2021 (Angie’s List) 5 stars

Why Choose WeatherMaster?

Why Choose WeatherMaster

Our pricing is simple and transparent, displayed right in our ads and online. We know your time is valuable, so we keep it simple–no long sales presentations, and no phony sales events, BOGO offers, trade-ins or other gimmicks. You have to wonder, why don’t the other companies show their prices upfront?

Why WeatherMaster Windows

Built for a
lifetime

All WeatherMaster models are built with either fiberglass or high strength alloy reinforcement.

Why WeatherMaster Windows

Extreme Energy Savings

Some of our of our window perform over 290%** better than ENERGY STAR criteria!

Why WeatherMaster Windows

Simple, Hassle-Free Shopping

WeatherMaster pricing is simple and transparent, displayed right in our ads, online or quoted over the phone.

Why WeatherMaster Windows

Three Decades
of Trust

A window will only perform as well as it is installed and WeatherMaster customers get the best in the business!

Just Started Shopping?

Just Started Shopping?

Learn all about the latest window designs, energy saving technologies and available options.

Web Special

Web Special

Replace your drafty old windows with one of our INSULATOR SERIES models and get a $25 Amazon Gift Card.

Areas Served

Areas Served

Serving 80,000+ customers throughout the Maryland and Northern Virginia since 1986.