23 Best Window Replacement Companies in St Marys, PA (2023 Reviews)
Window Companies Near Me
Looking to upgrade your windows? We've got all the information you need in this guide to the best window installation companies.
We analyzed all the top window installers in St Marys and selected the top 23 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 May 04, 2023
Why you can trust EcoWatch
Whether you're doing renovations or have old windows, windows play a key role in conserving energy in your home. Damaged or outdated windows can cost you in energy bills. In fact, the Department of Energy estimates that about 30% of your house's heat or cool air could be lost through your windows.
That's also bad for the environment because the additional energy used by damaged windows increases your carbon footprint.
We've put together this list of the best installation companies to help you in your search, so you can not only enjoy brand new windows, but also save money on your energy bills.
Best Affordability
Window World
- Low prices relative to competitors
- Great industry reputation
- Lifetime warranty
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Great industry reputation
- Award-winning company
- More expensive than competition
Best for Residential Windows
Window Nation
- Wide variety of products and services
- Custom designs
- Manufactures products in-house
- Limited service area
Best Window Replacement Companies in St Marys
The EcoWatch team assessed dozens of installers that service the St Marys area to find the best window installation companies that fit our standards. The companies in this article scored the best in our review categories, which include energy-efficient offerings, local expertise, availability, customer service, price and more.

Window World
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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 offers windows expertise in St Marys. 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 replacement sector. Hundreds of positive reviews from customers online back the provider's reputation.
If you're looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital, this may be the perfect provider for you.
Energy Efficiency of Window World WindowsWindow World is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company's windows are Energy Star certified, so be sure to ask your Window World representative when inquiring about services.
How much does Window World cost in St Marys?Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. You can inquire about a free quote on its website for more information about the cost.

Renewal by Andersen
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Member of US Green Building Council
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Great industry reputation
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Award-winning company
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More expensive than competition
Renewal by Andersen offers the best availability in St Marys. Andersen has about 27 years of experience in the window replacement business. Its reputation is backed by many positive reviews from customers online.
Andersen may be the company for you if you want one 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 St Marys?Andersen does not detail 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. Getting a free quote on its website is the best way to get more accurate pricing information.

Window Nation
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Wide variety of products and services
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Custom designs
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Manufactures products in-house
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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. This company has 16 years of experience in the window installation industry, and it has become one of the most respected companies in St Marys. The provider has hundreds of positive reviews from customers on online review websites.
Window Nation may be the company for you if you want one that 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 St Marys?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. Requesting a free quote on its website is the best way to know for sure.

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 provides the best warranty in St Marys. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has around 20 years of experience in the window installation business. Many positive reviews from customers online back the provider's reputation.
If you're looking for a company that has an industry-leading warranty covering products, parts and workmanship for life, Universal may be the perfect company for you.
Energy Efficiency of Universal Windows Direct WindowsThe 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. Not all of Universal's offerings are Energy Star certified, so make sure you mention that you're interested in Energy Star windows when inquiring.
How much does Universal Windows Direct cost in St Marys?Pricing information is not available on Universal's website because the cost of window installment varies greatly based on how many and what type(s) of windows you need. However, 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. For more accurate information on pricing, you can get a 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 23 years of experience in the window installation industry, and it has established itself as one of the most reputable companies in the business. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
If you're looking for a company that installs windows and doors at businesses across the Eastern U.S, Aeroseal may be the right provider for you.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for high-quality Energy Star windows when inquiring. 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 St Marys?Prices aren't displayed on Aeroseal's website, but it provides high-quality windows at a competitive price point. The best way to get more accurate pricing information is to request a free quote from the company.
Please note that the following companies are national, which means the quality of customer service may vary depending on your local crew. We have tried to remain unbiased and transparent by describing both pros and cons for every provider.
More Window Replacement Companies in St Marys
Pella Windows & Doors of State College
State College, PA-
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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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Commercial Windows
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Double-Hung
D & S Glass Services Inc.
Jamestown, NY-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Full-Service Installations
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
Window Perfections
Altoona, PA-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Bay Windows
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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
Home Services at The Home Depot
Franklin, PA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Bay Windows
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Custom Window Designs
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Stained Glass
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Residential Windows
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Fast Delivery
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Commercial Windows
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Double-Hung
Home Services at The Home Depot
State College, PA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Bay Windows
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Custom Window Designs
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Stained Glass
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Residential Windows
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Fast Delivery
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Commercial Windows
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Double-Hung
Home Services at The Home Depot
Jamestown, NY-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Bay Windows
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Custom Window Designs
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Stained Glass
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Residential Windows
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Fast Delivery
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Commercial Windows
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Double-Hung
Home Services at The Home Depot
Olean, NY-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Bay Windows
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Custom Window Designs
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Stained Glass
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Residential Windows
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Aluminum Window Frames
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Fast Delivery
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Commercial Windows
Window World of Dubois
DuBois, PA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Double-Hung
ASAP Glass
Olean, NY-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Glass Showers
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Residential Windows
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Custom Window Designs
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Commercial Windows
Jamestown Glass Service, LLC
Jamestown, NY-
Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Tempered Glass
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Double-Hung
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Commercial Windows
Western New York Glass & Door Co Inc
Olean, NY-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Residential Windows
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Custom Window Designs
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Commercial Windows
D & S Glass
Ellicott, NY-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
Thermo Twin Windows
Lakewood, NY-
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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Custom Window Designs
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Residential Windows
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Fast Delivery
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Commercial Windows
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Double-Hung
Considine Window and Screen Repair Shop
Mill Hall, PA-
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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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
Thermal-Gard Building Products
Punxsutawney, PA-
Good Customer Service
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Price Transparency
Services Offered
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Energy-Efficient Options
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Glass Showers
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Bay Windows
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Double-Hung
Centre Glass
State College, PA-
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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Residential Windows
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Custom Window Designs
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Fast Delivery
Burke & Sons Inc.
Punxsutawney, PA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Energy-Efficient Options
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Residential Windows
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Custom Window Designs
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Commercial Windows
Glass Doctor of State College
Boalsburg, PA-
Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Glass Showers
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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
PA Window Tint, Inc.
Bellefonte, PA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Residential Windows
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Custom Window Designs
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Commercial Windows
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Sliding Glass
Glass America-Jamestown, NY
Jamestown, NY-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Residential Windows
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Custom Window Designs
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Double-Hung
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Commercial Windows
Safelite AutoGlass
Bradford, PA-
Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Residential Windows
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Custom Window Designs
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Commercial Windows
MCM Windows and Doors Inc.
Clarion, PA-
Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Custom Window Designs
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Commercial Windows
Glass Erectors Inc
Reynoldsville, PA-
Educational Website
Services Offered
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Commercial Windows
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Residential Windows
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Custom Window Designs
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Aluminum Window Frames
How Installing Energy-Efficient Windows in St Marys Saves You Money
There are several benefits of upgrading to energy-efficient windows. Some reasons you may want to consider making the switch include the following:
- Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its real estate value, especially if your home is on the older side.
- Save on power bills: Upgrading to energy-efficient windows reduces your energy bills by about 12% since you need less energy.
- Decrease your carbon footprint: By using less energy once switching to Energy Star certified windows, you'll also be cutting your carbon dioxide emissions by about 12%, according to Energy Star.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only insulate your home better, but also filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.
Estimated Cost of Window Replacement in St Marys
Let's go over the cost of window replacement and the types of services offered by installers.
How Much Do New Windows Cost?
Typically, homeowners in St Marys can expect that most window installations will cost between $250 and $1,200, with the average cost at around $600. Costs will vary considerably based on the number of windows you need, the quality of your products, the current condition of your home and your location. A lot of window companies also offer replacement door installations and other add-ons like shutters, baths, coating and more. Additional services will increase your overall project costs.
With windows, efficiency is the most important factor for most homeowners. Windows with higher efficiency may cost more off the bat, but by increasing the efficiency of your home — especially during the winter — they can give you decades of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save St Marys homeowners $348+ per year after replacing single-pane windows.
Costs will also vary based on the material you choose for your window frames. Aluminum frames cost the least. They're sturdy, light and easy to maintain, but offer poor insulation. Vinyl frames are somewhat expensive and offer good insulation. Composite frames made using wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They're also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
Generally, there are two kinds of window installation services companies provide: full-frame and pocket installations.
A full-frame installation is a total window replacement. It involves taking out the old window, the windowsill, and the exterior and interior trim. It also involves additional materials, such as insulation and drip edges, which raise the overall cost of the project. It's also worth noting that you may have to touch up the paint around the window after a full-frame installation. Pocket installations (also known as retrofits) are when you replace a window without replacing the frame. Pocket installations are simpler and won't cost as much, but you can't do this type of installment if you have any pre-existing rot or water damage.
If you're not sure which kind of window installation service you need, your installer can assist you. Typically, the decision is influenced by factors like the age and condition of the home, the type of building material, budget and time restrictions.
Best Affordability
Window World
- Low prices relative to competitors
- Great industry reputation
- Lifetime warranty
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Great industry reputation
- Award-winning company
- More expensive than competition
Best for Residential Windows
Window Nation
- Wide variety of products and services
- Custom designs
- Manufactures products in-house
- Limited service area
How We Choose the Best Window Installers in St Marys
In our hunt to make your home improvements easier and more eco-friendly in St Marys, the EcoWatch Reviews team chose the above companies as the top window installation companies in the city. We have evaluated the top window replacement companies in St Marys mostly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows have been shown to lower energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
This one is self-explanatory, but we've chosen to highlight window installers that serve a wide variety of states and cities so you can find the right window installation company near you.
Work Quality
We're certain that you're not looking for a company to do a shoddy job installing windows. We've vetted each installer featured on this list to make sure its contractors are well-qualified and that the company has received a lot of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed trends in recent online reviews to find the companies with the most customer satisfaction, weighted by sample size. Customer satisfaction might be the factor we place the most value on, as it indicates the quality of services across most other categories, including quality of installation, warranty, quality of parts, professionalism, cost and more.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers try to keep costs low when possible. When analyzing providers' prices, we gave higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed previously, windows are a sizable investment, so you'll want to make sure that investment is protected. Window installation companies that provide lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Because of St Marys' climate, homeowners will want to mitigate rot, low efficiency and water damage. We factored in local experience to reflect the ability of St Marys window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
St Marys, PA Window Replacement FAQs
How much does window installation cost?
The national average cost of replacing a single window is about $600 but can range from $200 to $1,200, based on a few different factors. The price is generally dependent on the type and material of the window, the size of the window and the location of your property. Also, bear in mind that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
What kind of window is the most energy-efficient?
A window's energy efficiency is affected 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 usually the most energy-efficient since they are certified by the U.S. Department of Energy.
What services do window installation companies provide?
Window installation professionals cover the entire process — from replacing old windows with brand new ones to cleaning up afterward. Additionally, a lot of companies offer window manufacturing, customization and repairs.
How often should you replace your windows?
Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, they probably need to be replaced. Other than that, if your windows have damage anywhere on them, or they have become difficult to operate, they may need to be replaced.