About Our Company
Locally Owned and Operated in Northwest PA
The Window Source of Northwest PA is proudly locally owned and operated by a lifelong Northwest Pennsylvania native, Justin Howell. Combining extensive experience in the replacement window and door industry with decades of business and entrepreneurial leadership, he has built built the company around a simple philosophy: treat every customer with honesty, respect, and care. Justin's commitment is to deliver quality products, expert craftsmanship, and an exceptional experience from the first consultation to the final installation.

The Window Source is a network of carefully selected independently owned and operated entrepreneurs backed by a national brand. The Window Source believes that local family-owned businesses, supported by industry leaders with more than 40 years of operating experience, are an ideal combination for a company that values providing high-quality customer service, exterior home-improvement products at the best prices possible. Read our review at various locations across the country and see what your neighbors and others are saying about The Window Source!
The WIndow Source Company
Peace of Mind Assurances:
Lifetime Warranty
All Window Source products come with a limited lifetime warranty. You will have peace of mind knowing that you will only make this investment in your home once. Ask your window consultant for details.
Independently Certified NFRC Labels
All Window Source products come with voluntary National Fenestration Rating Council (NFRC) labels so that you can compare with confidence. You can rely on the labels and forget about all the sales gimmicks that you may hear from companies charging much higher prices. In fact, the US EPA relies on NFRC data to set its ENERGY STAR guidelines.
ENERGY STAR® Rated Products
Be assured that you will gain valuable energy savings when you choose our High Performance Glass option. All of our products ordered with High Performance Glass will meet ENERGY STAR® guidelines in all US climate zones.
No other source gives you such peace of mind and ease when choosing new windows for your home. Join our growing family of satisfied customers at The Window Source where America shops for windows and doors.

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