We Replace & Repair! Call for a Free Estimate

  • Windows, Vinyl, Wood And Composite 
  • Fogged Insulated Glass Replacement and Repair
  • Window and Patio Door Parts 
  • French Doors
  • Entry Doors

We respect you, your time and your home. Co owner and estimator Dennis McHugh has over 20 years of experience and will provide you with an estimate for your job.

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Looking to Repair rather than replace windows and patio doors? We service all types and brands of replacement and new construction windows and patio doors. Even if the manufacturer is out of business we can usually get the glass or parts you need to keep your windows operational and looking good for years to come. 

Click on the Picture to watch Bogey Hills Country Club Video Window Replacement Project

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Contact us at:  314-966-2666

15009 Manchester Rd Suite 267 Ballwin MO 63011

Check out our Photo Gallery for Amazing Before and After photos of Local Window & Door Projects!


      * Certified Andersen Installer

      * Lead Certified
      * A.S.H.I. Affiliate
      * A+ Better Business Bureau 
      * Angie's List Super Service  Award 2015-16

      * Liability and Workers Compensation Insurance 

      * Financing available

​      * We accept all major Credit Cards

15009 Manchester Rd. Suite 267

Ballwin, MO. 63011


Clear Window Technology Window and Patio Door Replacement and Repair

SINCE 1983 


​​​​For HIGH PERFORMANCE insulated glass with LONG TERM DURABILITY check out  these links! 

          Lo e 366  www.cardinalcorp.com

          Duraseal  ​www.quanex.com


We have been proudly replacing and repairing windows and patio doors in St. Louis since 1983. Our team of professionals has a combined 80 years of experience in sales, installation and service of many brands of windows and doors.

You won't get 3 hour sales pitches, high pressure tactics or outrageous prices with exorbitant, phony discounts at Clear Window Technology. Instead, owner Dennis McHugh, with over 25 years of window and door experience, will personally guide you through all of the available options and provide an estimate that is both realistic and competitive. 

Thank You For Visiting! We Hope The Information On Our Site Helps You Get The Best Windows And Doors Wherever You Live.

To Schedule A Window And Door Estimate In St. Louis Call 314-966-2666.

We carry Andersenfor Fibrex and clad wood windows and patio doors and are 40% - 50% less than the competition. ​​​​Learn more about Andersen windows and patio doors at their web site below. 


Our custom Composite Vinyl Replacement windows and patio doors are made right here  in Missouri. They have proven their durability for more than 30 years for our clients. Energy efficiency exceeds Energy Star guidelines in all 3 climate zones and cost 30-40% less than Andersen. 

Click the link below to learn more.