A St. Louis Window Replacement Company

We’ve been known as the trusted window replacement company for St. Louis & St. Charles Counties since 1953.

So, how may we help you today?





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We provide the best everyday value on top brands 🙂

Combining unmatched performance with distinctive style for a perfect fit.

Find expert tips on buying windows and doors in this informative eBook:

window replacement company guide

What Our Customers Say

About us as a window replacement company; our products, pricing, and workmanship.

Energy Efficient Windows

Consider installing energy efficient windows to reduce your home energy consumption and save!

We offer the best in energy efficient windows, Anderson.  These windows reduce the environmental impact homeowners have and increase savings.


Who is Penny Window?

For over 60 years, we have been serving greater St. Louis and St. Charles County with windows, doors, and siding.

We offer top of the line products at a discount price.  Penny Window gives homeowners a simple and affordable way to freshen up their home.