uPVC Windows & Doors

Backed by decades of research and development, KÖMMERLING offers an extensive range of window and door systems that outshine competitors. The German-designed, American-made lines couple European technology with home-base dependability to create worldwide appeal. The global brand is known for its exceptional energy efficiency, superior sound control, and resilience to nature’s elements. All KÖMMERLING materials meet or beat US quality standards, and the variety of customizable products provide a solution to any project’s challenges.



Bring KÖMMERLING’s world-renowned European uPVC windows and doors to your home or business right here in the United States.

There are multiple advantages to the KÖMMERLING brand. The company’s thermal insulating uPVC profiles can save up to 40 percent on heating costs. Sound canceling technology can quiet the noisiest city street. Advanced safety features prevent break-ins, while the product durability further protects the inside world from the outside. Window Distributors of Colorado provides our clients access to KÖMMERLING’s lift and slide doors, tilt and turn windows, and inswing and outswing exterior doors for both private and public spaces.

All KÖMMERLING products are designed with the following features that meet or exceed US requirements:

  • Exceptional energy efficiency – standard U-Value of .27
  • Superior sound control – standard STC rating of 33
  • Resiliance to extreme elements – standard DP rating of 45​ to 75
  • Passive House compatible


KÖMMERLING’s global reach and advanced technology reflect its 100-year history.

KÖMMERLING Tilt and Turn Windows

System 76 by KÖMMERLING provides functionality and flexibility with a wide range of opening options, colors, and woodgrains. Each part of System 76 was designed with long-term use in mind, so windows and doors stay working well and looking good for decades. Contact us to learn more about the specifications of System 76 windows.

KÖMMERLING Lift and Slide KomaDoor

Manufactured in the USA, the KomaDoor by KÖMMERLING was engineered to bring the maximum amount of light into any space. The striking, sleek doors can reach up to 9-feet tall and 21-feet wide while remaining safe and secure. Reach out to us to find out more about KomaDoor specifications and customizable options.


Like what you see and want to learn more about KÖMMERLING, or are you ready to get a project started? Schedule an appointment in our Denver showroom to meet with a member of our team. We have a stunning selection of KÖMMERLING products on display and will work with you to begin your custom project.