Double Hung Windows
Two movable sashes that both tilt in for easy cleaning and let you control airflow. The timeless, versatile choice for Erie homes
Learn MoreDesigned for Beauty. Engineered for Performance.
Old, drafty windows make your home harder to heat and more expensive to run, especially through an Erie winter. The Window Source of Northwest PA installs energy-efficient replacement windows engineered to seal out the cold, stop drafts, and cut heating bills. Every window is professionally installed and backed by a lifetime warranty, with factory-direct pricing you won’t find at a big-box store.
Sliding Windows
Smooth side-to-side operation and a wide view, with no cranks or lifting. Ideal for wider openings and easy, low-maintenance use.
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Casement & Awning Windows
Crank-out windows that seal tight against winter drafts and wind. One of the most energy-efficient styles, perfect for our climate.
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Architectural Shapes
Custom geometric and radius windows that finish a facade with a distinctive, designed look.
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Basement Hopper Windows
Compact, secure windows that tilt inward to bring light and ventilation into lower-level and utility spaces.
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Bow & Bay Windows
Elegant projected windows that add light, space, and curb appeal while creating a bright focal point.
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Garden Windows
A mini-greenhouse that extends from the wall with glass shelves, perfect for herbs and plants even through a Northwest PA winter.
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Low-E Glass
Low-E coated, insulated glass engineered to hold heat in, the single smartest window upgrade for the cold Erie climate.
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Window Decorative Options
A full range of frame colors, finishes, grid patterns, and hardware to match any home’s style inside and out.
Learn MoreThe 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