Keystone Window specializes in providing exceptional window replacement services customized to meet the unique requirements of Reading residents.
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30 Minute Estimates, Good For 30 Days!
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Replacing old or broken windows? Trust Keystone Window for honest work in Reading, PA. With 20 years of hands-on experience installing double hung, casement, awning, and bay windows, we guarantee a clean installation without the sales pitch. Contact us today for your 30-minute free estimate.
Keystone Window specializes in window replacement for homeowners in Reading. Here’s what sets us apart:
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Read what our customers are saying about our window replacement services in Reading on our Google Reviews and visit our Reviews page for more testimonials.

Photo by BigCheddah / CC BY 2.0
Explore Reading While We Upgrade Your Home
We pride ourselves on a clean, efficient installation process. While our crew handles the heavy lifting, take the opportunity to enjoy everything Reading, PA has to offer. Here are a few of our favorite local spots:

We Keep It Simple:
Vinyl Windows That Work
We specialize in high-quality vinyl replacement windows—no confusing options, no upselling. Our windows feature energy-efficient glass, Low-E coatings, and solid construction that cuts outside noise, boosts your home’s curb appeal, and delivers real energy savings month after month.
Lifetime Warranty on Materials AND Labor
Not many companies cover labor for life. We do. And it even transfers if you sell your home—that’s how confident we are in our work.
20 Years of Local Experience
We’re not a national chain. We’re Reading area folks who’ve been doing this for two decades. Our professional installers know Pennsylvania weather, we know local homes, and we know how to replace your home’s windows right the first time.
Free 30-Minute Estimate, No Pressure
We’ll come to your home, measure your windows, and give you straightforward pricing—all in about 30 minutes. Your quote is good for 30 days. No sales pitch, no surprises. Just honest numbers from people who care about quality work.
To reach Keystone Window of Pennsylvania from Reading, PA, head southeast towards Douglassville, which is about a 23-minute drive (14.6 miles). Continue on US-422 E and take the Armand Hammer Blvd exit in Lower Pottsgrove Township. Follow Industrial Hwy to Moser Rd in Pottstown, and you’ll arrive at Keystone Window of Pennsylvania, located at 190 Moser Rd, Pottstown, PA 19464.
190 Moser Rd
Pottstown, PA 19464
Phone: (267) 436-3368
Monday: 8:30 AM – 4:30 PM
Tuesday: 8:30 AM – 4:30 PM
Wednesday: 8:30 AM – 4:30 PM
Thursday: 8:30 AM – 4:30 PM
Friday: 8:30 AM – 4:30 PM
Saturday: Closed
Sunday: Closed
Follow Keystone Window on social media and online platforms to stay updated on our latest products and news. Connect with us for expert window installations, replacements, commercial window solutions, energy-efficient windows, custom designs, and repair services.
Connect with us to stay updated on our latest services and promotions.
We serve the following zip codes in Reading, PA: 19601, 19602, 19604, 19605, 19606, 19607, 19608, 19609, 19610, 19611.
We offer a range of services including:
Call us at (267) 308-2500 or request a free estimate online to get your project started. We’ll schedule a free 30-minute estimate. We aren’t a big box store; we are a local contractor who brings the showroom to you.
Whether you need new construction windows for an addition or are looking into replacing windows in your existing house, we’ll measure your windows and provide a clear breakdown of replacement windows cost. We make the process simple—even if you just need to replace one window—so you can start enjoying your upgraded home sooner.
Yes, maximizing energy efficiency is our priority. We install energy efficient windows designed to help you save money on monthly energy bills. Our high-quality vinyl frames are often better insulated than older wood windows, and when paired with argon gas and triple pane glass, they provide superior thermal protection. Upgrading from drafty single-pane windows to our high-performance new windows is one of the best ways to save energy and keep your home comfortable year-round.
We are certified installers focused on boosting your home value and curb appeal—not salespeople. We offer custom made solutions in a variety of window styles, including casement windows, single hung windows, and sliding options. You can personalize your custom windows with unique grille patterns and exterior colors to match your style. Plus, while some companies charge extra, we include full screens as standard. We help you select windows that are the best windows for your specific needs, ensuring a perfect fit for your exterior.