About Us

We won't waste your time or ours with 3 hour sales pitches, high pressure sales tactics, and we don't have outrageous pricing to give you exorbitant phony discounts. Co owner, Dennis McHugh, with over 20 years of experience with Andersen and Target windows, will personally guide you through your options and provide a free estimate.


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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

Clear Window Technology Window and Patio Door Replacement and Repair

SINCE 1983 



Many of the replacement windows and patio doors being sold today will need repairs, so we have a dedicated crew to service all types and brands of windows and doors. Even if the company or manufacture is out of business, we can most often get the glass or parts you need.  For Insulated glass that lasts, our suppliers are commercial grade. Check them out here...

           Lo e 366  www.cardinalcorp.com

          Duraseal  ​www.quanex.com


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

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

If You Have Any Questions Please Contact Me By Email: dennis.mchugh@clearwindowtech.com. Or To Schedule An Estimate In St. Louis Call 314-966-2666.

Windows and Patio doors...

we believe in using only high quality products and materials. The windows and doors that we carry exceed Energy Star requirements in all 3 climate zones and have proven their durability in our St. Louis climate for more than 30 years.We carry ANDERSEN for wood or Fibrexcomposite windows and patio doors, and we're typically 30 to 40% less than Renewal by Andersen.

*We are a Certified Andersen Installation company.*


Custom composite vinyl windows

We carry the Elite 4000 line of windows and doors. We call them the Andersen of vinyl windows and doors: they are that efficient and durable and cost quite a lot less than Andersen windows and they are made in Missouri!

To see the quality components you won't get in other replacement windows..

click here:  www.targetwindowanddoors.com 


We have been proudly replacing and repairing windows and doors in St. Louis since 1983. We are a family owned and operated business and will treat you and your home with T.L.C.

Our team has a combined 80 years experience in sales, installation and service of Andersen windows and other proven brands, so you can be confident we have the tools and experience to complete your job right.

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.

See what our clients are saying about us...