20 Best Window Companies in Greencastle, PA (2023 Reviews)
If you're looking to upgrade to new windows, our list of the top window installation companies can help.
We analyzed all the top-rated window companies in Greencastle and selected the best 20 based on:
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Customer reviews
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Window installation expertise
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Popularity with home-owners like you
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Updated September 15, 2023
Why you can trust EcoWatch
A guide on the top window installation companies in Greencastle may not seem like the most interesting article on the EcoWatch site, but trust us, windows impact your life more than you might think. The Department of Energy estimates that heat gained or lost through old or damaged windows could make up nearly 30% of residential energy climate use. In Greencastle, where the power bills are an average of $28 per month, that's almost $$101 per year wasted.
Replacement windows improve your home's insulation, not only making you and your family more comfortable during the summer and winter, but also saving you money and helping the environment.
As windows are so important for your home, choosing the right company for you is a big choice to make. That's why the EcoWatch team has created this list of the best window installation companies, so you can more easily make an informed decision.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in Greencastle
The EcoWatch Reviews team examined several window companies in Greencastle to find the best ones for our readers. We assessed the companies on energy-efficient offerings, local experience, price, coverage area, customer service and more.

Window World
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EnergyStar Partner
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Lifetime warranty
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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 industry for around 27 years. The provider has hundreds of positive reviews from customers online.
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 WindowsThere are a wide range of window types that Window World offers, some of which are Energy Star products. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Greencastle?Prices aren’t displayed on Window World’s website, but it's known for offering some of the most affordable window installations around. The best way to get more accurate pricing information is to request a free quote from the company.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Member of US Green Building Council
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Manufactures products in-house
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No lifetime warranty
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More expensive than competition
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window industry for around 27 years. The provider has hundreds of positive reviews from customers online.
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 WindowsThere are a wide range of window types that Renewal by Andersen offers, some of which are Energy Star products. 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.
How much does Renewal by Andersen cost in Greencastle?Prices aren’t displayed on Andersen’s website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. The best way to get more accurate pricing information is to request 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 is 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. This company has been in business since 1999 and currently serves 13 states and Washington D.C. Hundreds of positive reviews on customer review websites back the company's reputation.
It has established itself as a company that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsThere are a wide range of window types available from Aeroseal Windows, some of which are Energy Star products. 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.
How much does Aeroseal Windows cost in Greencastle?Pricing information is not available on Aeroseal’s website, as the cost of window replacement depends on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. If you’d like to know for sure, you can get a quote on the company’s website.

Universal Windows Direct
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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Quality of service will depend on your area
Universal Windows Direct is a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has been in the window industry for around 20 years. The provider has hundreds of positive reviews from customers online.
It has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsThere are a wide range of window types that Universal Windows Direct offers, some of which are Energy Star products. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.
How much does Universal Windows Direct cost in Greencastle?Prices aren’t displayed on Universal’s website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. The best way to get more accurate pricing information is to request a free quote from the company.

Window Nation
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Award-winning company
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Manufactures products in-house
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Custom designs
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Wide variety of products and services
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Installation not covered by warranty
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Limited service area
Window Nation is 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 industry for around 16 years. The provider has hundreds of positive reviews from customers online.
It gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsThere are a wide range of window types that Window Nation offers, some of which are Energy Star products. 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.
How much does Window Nation cost in Greencastle?Prices aren’t displayed on Window Nation’s 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 get more accurate pricing information is to request a free quote from the company.
We try to be unbiased and transparent by listing pros and cons for every company we review. Additionally, our rankings are not influenced by any partnerships.
More Window Companies in Greencastle
Renewal by Andersen
Mechanicsburg, PA-
Educational Website
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Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Glass Showers
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Stained Glass
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Window Replacement
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Sliding Glass
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Double-Hung
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Commercial Windows
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Custom Window Designs
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Residential Windows
Window World of Frederick County
Frederick, MD-
Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Double-Hung
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Bay Windows
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Fast Delivery
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Custom Window Designs
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Sliding Glass
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Residential Windows
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Energy-Efficient Options
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Window Replacement
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Commercial Windows
Window Nation
Camp Hill, PA-
Free assessment
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Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Stained Glass
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Custom Window Designs
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Window Replacement
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Glass Showers
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Double-Hung
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Bay Windows
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Residential Windows
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Energy-Efficient Options
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Sliding Glass
Replacement Windows and Doors-Homerite Waynesboro
Waynesboro, PA-
Free assessment
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Price Transparency
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Good Customer Service
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Timely Service
Services Offered
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Fast Delivery
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Stained Glass
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Window Replacement
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Custom Window Designs
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Sliding Glass
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Residential Windows
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Energy-Efficient Options
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Commercial Windows
Myers Building Product Specialists - Chambersburg
Chambersburg, PA-
Free assessment
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Good Customer Service
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Price Transparency
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Timely Service
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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Window Replacement
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Fast Delivery
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Glass Showers
Affordable Glass Inc
Thurmont, MD-
Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Commercial Windows
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Glass Showers
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Window Repair
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Custom Window Designs
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Residential Windows
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Window Replacement
R&H Glazing Inc
Frederick, MD-
Good Customer Service
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Price Transparency
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Educational Website
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Free assessment
Services Offered
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Window Replacement
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Custom Window Designs
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Double-Hung
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Window Repair
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Commercial Windows
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Residential Windows
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Sliding Glass
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Aluminum Window Frames
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Bay Windows
Glass & Mirror Services, Inc.
Frederick, MD-
Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Double-Hung
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Stained Glass
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Glass Showers
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Custom Window Designs
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Window Replacement
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Residential Windows
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Commercial Windows
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Aluminum Window Frames
C3 American Exteriors
Mt Airy, MD-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Aluminum Window Frames
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Stained Glass
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Residential Windows
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Fast Delivery
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Window Replacement
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Commercial Windows
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Custom Window Designs
Robert G. Miller
Hanover, PA-
Free assessment
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Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Window Replacement
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Double-Hung
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Aluminum Window Frames
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Commercial Windows
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Custom Window Designs
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Glass Showers
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Residential Windows
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Fast Delivery
Seipp Roofing, LLC
Westminster, MD-
Educational Website
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Price Transparency
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Free assessment
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Timely Service
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Good Customer Service
Services Offered
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Window Replacement
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Residential Windows
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Commercial Windows
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Custom Window Designs
Window Expert
Paeonian Springs, VA-
Educational Website
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Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Fast Delivery
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Commercial Windows
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Double-Hung
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
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Window Replacement
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Window Repair
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Residential Windows
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Bay Windows
Grand Opening Windows & Doors
New Kingstown, PA-
Free assessment
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Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Custom Window Designs
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Aluminum Window Frames
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Sliding Glass
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Residential Windows
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Stained Glass
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Window Replacement
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Bay Windows
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Double-Hung
Classic Exteriors
Sykesville, MD-
Educational Website
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Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Custom Window Designs
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Aluminum Window Frames
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Commercial Windows
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Window Replacement
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Residential Windows
Potomac View Energy
Sykesville, MD-
Timely Service
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Price Transparency
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Educational Website
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Good Customer Service
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Free assessment
Services Offered
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Fast Delivery
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Energy-Efficient Options
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Stained Glass
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Sliding Glass
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Commercial Windows
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Double-Hung
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Bay Windows
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Residential Windows
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Glass Showers
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Custom Window Designs
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Window Replacement
B.T. Window & Doors LLC
Sykesville, MD-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Sliding Glass
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Residential Windows
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Window Replacement
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Energy-Efficient Options
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Custom Window Designs
C2 Operations
Leesburg, VA-
Educational Website
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Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Residential Windows
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Double-Hung
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Custom Window Designs
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Window Replacement
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Sliding Glass
HomeRite Windows and Doors
Mechanicsburg, PA-
Free assessment
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Price Transparency
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Educational Website
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Good Customer Service
Services Offered
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Commercial Windows
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Double-Hung
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Window Replacement
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Fast Delivery
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Tempered Glass
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Residential Windows
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Custom Window Designs
Glass Doctor of Mechanicsburg, PA
Mechanicsburg, PA-
Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Window Repair
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Glass Showers
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Custom Window Designs
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Stained Glass
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Window Replacement
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Double-Hung
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Residential Windows
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Commercial Windows
West Shore Home
Mechanicsburg, PA-
Educational Website
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Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Sliding Glass
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Double-Hung
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Residential Windows
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Custom Window Designs
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Glass Showers
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Window Replacement
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Commercial Windows
Calculate how much you can expect to pay for window installation and replacement in Greencastle, PA using our customized window cost calculator.
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 Greencastle Saves You Money
There are quite a few benefits of upgrading to energy-efficient windows. A few reasons you may want to consider making the switch are the following:
- Better temperature control in your home: Residing in a hot city like Greencastle usually means needing your air conditioner to keep your home cool. Energy-efficient windows can lower the amount of cool air lost through your windows when cooling your home.
- Decrease your carbon footprint: You can reduce your carbon footprint by about 12% after you install Energy Star certified windows. In Greencastle, that's about 467 pounds per year on average.
- Save on energy bills: According to the Department of Energy, heat gained or lost through windows accounts for about 25-30% of household energy use. Replacing your windows with energy-efficient models can help lower that amount, therefore saving you about 12% more on your bills.
- Protect your investment: If your home is on the older side, your windows are most likely in need of replacement. Updating your windows can make your home more comfortable and also help increase the value of your house if you decide to sell.
Estimated Cost of Window Replacement in Greencastle
Let's go over the cost of window replacement and the types of services offered by installers.
How Much Do New Windows Cost?
Though the national average to install one window is around $600, it can range from $200 to $1,200. Costs will differ considerably based on the current condition of your home, the number of windows you need, the quality of your products and your location. Many window companies also offer door installations and other add-ons like shutters, baths, coating and more. These extra services will increase your overall project costs.
Keep in mind that energy-efficient windows may cost more upfront, but Energy Star predicts the upgrade will save you between $101 and $583 a year when installing single-pane windows and between $27 and $197 a year when installing double-pane, clear glass windows. These savings vary depending on your local climate, energy rates and individual home characteristics.
We recommend getting free quotes from several window installers to find the one that works best for your budget.
What Services do Window Installers Offer?
In regard to window replacements, there are typically two kinds that your provider will have: full-frame and pocket installations.
A full-frame installation replaces the full window, such as the windowsill, frame, trim and the window panes. As this type of installation is more involved, it will be more expensive than a pocket installation. Pocket installations (or retrofits) involve installing a new window within its existing frame, which makes pocket installations more simple and affordable. However, if the frame has any damage or rot, you will likely need a full-frame installation instead.
If you're not sure which type of window installation service you need, your installer should be able to assist you. Generally, the decision depends on factors like the age and condition of the home, the type of building material, budget and time restrictions.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
How We Choose the Best Window Installers in Greencastle
In our search to make your home improvements easier and more eco-friendly in Greencastle, the EcoWatch team assessed many companies before deciding on these. We have reviewed the top window installation companies in Greencastle mainly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows can reduce your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
This one is self-explanatory, but we've chosen to highlight window installers that serve Greencastle so you can find a quality window installation company near you.
Work Quality
When it comes to new windows, the quality and variety of services often plays just as important of a role in overall efficiency and performance as the brand of window you choose. We do give window installers higher marks if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed trends in recent online reviews to determine the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction may be the most important factor, as it reflects the quality of services across most other categories, including quality of installation, warranty, professionalism, cost, quality of parts and more.
Cost
This one is a give-and-take: as with most services, cheap window companies won't always provide the highest quality service. On the other hand, we want to make sure we're highlighting companies that offer a variety of price and financing options so they're accessible to most homeowners.
Warranty
Protecting your investment in new windows is important to many homeowners. That's why window installation companies that provide lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a proven track record in the industry. Window installation companies that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Greencastle, PA Window Replacement FAQs
How much does window installation cost?
The national average cost to replace one window is around $600 but can range from $200 to $1,200, based on a variety of factors. The price is generally influenced by the size of the window, the type and material of the window and the location of your property. Also, remember that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
What are the different kinds of windows?
There are various kinds of windows you can get for your home, such as casement windows, double-hung and single-hung windows, awning windows, picture windows, bay windows, transom windows and slider windows.
Can you install your own windows?
If you're handy and have experience with installing a replacement window, it's possible to install your own windows. But if you don't have the time or skills, we recommend getting a professional to do it for you.
What time of year should I replace my windows?
Replacement windows can be installed during any season, but warmer weather is typically better. Regardless of when you install them, the contractors will take steps to make sure that too much hot or cold air doesn't get into your home, so the temperature outside isn't necessarily a big factor. Most importantly, the weather should be dry.
Should I replace my windows all at once?
If your windows are greater than 20 years old, it's most likely time to replace all of them. At that point, they are often less efficient, draftier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less stress.