One Window, One Price, in 30 Minutes.

Better Windows, An Honest Price

A Window Replacement Company

No Payments, No Interest

Better Windows, An Honest Price

One Window, One Price, in 30 Minutes.

No Payments, No Interest

Our Windows

No gimmicks, fake offers, or inflated retail prices. We give our best price upfront!

Door Installation

Energy efficient, durable, and available in a wide selection of styles and colors.


GreenSky® provides numerous financing options to cover your entire window project.

Why Keystone Is Better & Different

Customer Reviews

Our customers have only good things to say. If we mess up, we make it right!

Click Here For To Read All Reviews

Our Map of Successful Jobs and Thrilled Customers, We Have The Experience You Need

Good Evening Mr. Mato,

I’m around the Reading area about 45 minutes from Pottstown and am looking to have 10 windows and a picture window replaced. I’ve done some research of local window specialists and your business has outshined the majority of them with reviews and satisfaction.

I wanted to know if you would be able to give me a quote for replacing all the windows in my home? I’m looking to get them done this year as soon as possible.

Ryan of Reading area, PA

Our Story

Rob Mato
At Keystone Window of Pennsylvania, we are dedicated to offering the highest quality replacement windows, doors, service, and installations each and every day.

  • The only products we sell are the ones we would put in our own house.
  • We replace windows and doors all year round.
  • We are also proud to offer Andersen® replacement windows.
  • We will never use the high-pressure sales tactics that other replacement window and door companies use.
  • With measuring we are typically in and out in 30 minutes
  • No Interest Financing available

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50 Year Transferable Window Warranty that includes Labor
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  • 97% "Likely to Recommend" Rating from GuildQuality®
  • BBB Accredited with A+ Rating
  • Energy Star Certified Partner
  • lead-safe
  • Featured in Good Housekeeping
  • Earthwise Windows & Doors