About Us

Man working on windowFor 25 years, Jantek Windows has been making windows and patio doors to your specifications and installing them at your home or business. We’re celebrating this mile-marker anniversary with kudos to our employees. Everyone involved in the operation is an employee — not a contractor. That’s just one of the ways we ensure our products are the best in the industry.

We have our own 80,000-square-foot factory in Medford, NJ, where our employees work hard to make high-quality, energy-efficient windows. You don’t have to take our word, check out our Facebook page and Google Reviews on what our customers have to say .  

Why We’re the Best at What We Do

We stand behind all of our products for these excellent reasons. Our windows and patio doors are:

  • All Custom-Manufactured to the Customer’s Specifications & Job Requirements
  • Energy Star®-Certified, Triple-Pane R5 Insulation Value (40% above Average)
  • National Fenestration Rating Council (NFRC)-Certified for Energy Performance
  • Certified to meet AAMA/WDMA Residential & Light Commercial Structural Ratings
  • Certified by the Department of Energy to Meet the Requirements of their High-Efficiency Window Program
  • Made of Proprietary Super-Strong Frame Designs to Provide More Visible Glass Area
  • Available in Unlimited Interior & Exterior Colors
  • Equipped with a 55-Year Non-Prorated Transferable Limited Warranty
  • Available with Full Line of Custom Replacement-Window Styles

Reach out to us for a free and convenient TeleEstimate/Virtual Estimate.