Replacement Windows, Doors & Siding in Erie
The Window Source of Northwest PA delivers factory-direct pricing, expert installation, and a lifetime warranty you can count on for your home’s windows, doors, and siding. As part of a national brand with 60+ locations across America, we bring big-brand buying power and local, hands-on ownership to homeowners across Erie and Northwest Pennsylvania.
- Free in-home estimate
- Lifetime warranty
- Locally owned
Trusted By Erie Homeowners
- LifetimeWarranty
- 30%Lower Energy Bills
- BuiltFor Tough Winters
- LocallyOwned & Operated
About The Company
Meet The Window Source of Northwest PA
The Window Source of Northwest PA is proudly locally owned and operated by a lifelong Northwest Pennsylvania father-son team, Justin and Drake Howell. Combining extensive experience in the replacement window and door industry with decades of business leadership, they built the company around a simple philosophy: treat every customer with honesty, respect, and care.
Our mission is to provide Northwest Pennsylvania homeowners with high-quality windows, doors, and siding backed by honest advice, skilled craftsmanship, and outstanding customer service. As a locally owned father-son business, we’re committed to building lasting relationships by treating every home as if it were our own and every customer as a neighbor.

Our Products
Quality Products For Every Erie Home
Choose from a wide selection of energy-efficient windows, doors, and siding designed to enhance your home’s beauty, comfort, and value. Every product is backed by our lifetime warranty and installed by certified professionals right here in Erie.
Why Choose Us
Premium Products From Trusted Manufacturers
At The Window Source of Northwest PA, we install products from trusted manufacturers known for quality, durability, and energy efficiency. Our siding comes from Alside, and every window, door, and siding product is backed by our lifetime warranty and installed by professionals who treat your home like their own.
- Energy Efficiency Experts: We help you choose windows and doors that seal out the cold and cut heating costs through the long Erie winters, while qualifying for available rebates and tax credits.
- Comprehensive Product Selection: From traditional to contemporary styles, we offer hundreds of options in windows, doors, and siding to match any Northwest Pennsylvania home.
- Local Accountability, National Backing: Your local father-son ownership is invested in the community’s reputation, supported by the resources and standards of a national organization.

The Window Source Difference
More Than Just Windows, Doors, and Siding
The Window Source difference goes beyond premium products and professional installation. We’re committed to delivering an exceptional experience from start to finish, backed by the resources of a national brand and the personal touch of local ownership. When you choose The Window Source, you’re choosing a partner invested in your home’s long-term performance and your complete satisfaction.
Our Service Area
Our Erie & Northwest Pennsylvania Service Area
The Window Source of Northwest PA proudly installs replacement windows, entry and patio doors, and siding for homeowners across Erie and Northwest Pennsylvania. As a locally owned father-son team, we know these communities firsthand, from the neighborhoods of Erie and Millcreek to Meadville, Franklin, and the Shenango Valley. Wherever you are in our territory, you get the same factory-direct pricing, professional installation, and lifetime warranty.
Explore your city below to learn how we serve your neighborhood, or call us at (814) 746-6338 for a free, no-obligation estimate. Don’t see your town listed? Give us a call anyway, because chances are good we serve your area too.
Free in-home estimate
Get your free estimate in under an hour
We measure your openings, walk you through your options, and give you a clear written price. No pressure, no obligation.
- Free, no-obligation estimate
- Factory-direct pricing, guaranteed in writing
- Limited lifetime warranty on every product
- Locally owned by the Howell family, we reply within 24 hours















