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Diamond Bar Window Replacement

Considering new windows? You’ve come to the right place! Design Windows and Doors is a family-owned business that brings 40+ years of combined experience to your project, along with a commitment to provide next-level customer service from start to finish!

We only install top-rated products, including Milgard windows, Marvin windows, and Simonton windows, and we provide:

  • Free Consultations and Accurate Cost Estimates
  • Competitive Prices and Flexible Financing
  • Expert Workmanship
  • Fast Project Completion
  • Four-Year Labor Warranty in Addition to Manufacturer Warranties

As a Milgard Certified Dealer and Simonton Premier Dealer, you can count on us to deliver the beautiful, durable results you want!

Energy-Efficient Replacement Windows for Your Diamond Bar Home

One of the best reasons to replace your outdated windows is to improve energy efficiency.

You might be wondering how much you can save on heating and cooling costs.

A typical homeowner saves nearly $500 a year when updating from single-pane windows to high-performance windows—and many save even more.

Our Diamond Bar window installers boast impressive features, such as dual- or triple-pane glass, gas fills, thermal spacers, foam insulation, and innovative locking features.

Choose from many styles, including:

  • Double-Hung Windows
  • Bay Windows
  • Bow Windows
  • Sliding Windows
  • Garden Windows
  • Picture Windows
  • And More!

Are you wondering about cost? We keep our prices competitive without sacrificing quality, and simple financing options make it easier to budget for the window installation you need.

Contact Our Experienced Diamond Bar Window Specialists to Learn More

Design Windows and Doors makes it easy and affordable to upgrade your outdated windows and enjoy the many benefits premium replacement windows provide.

Call today to learn more about the services we offer to Diamond Bar homeowners, including:

  • Replacement Windows
  • Replacement Doors
  • QuietCool Whole House Fans

Take the first step towards the new windows you need by filling out our online contact form to schedule a no-cost, no-obligation consultation and accurate cost estimate.