Zen Windows is the replacement window source for St. Louis Missouri!

Replacing your windows and doors should be straightforward process. With Zen Windows, there are no long sales presentations, and we do not outsource our installment work to undependable contractors. You will receive the personal attention you deserve in order to provide solutions for your window or door replacement project.

Contact us today, and see how easy outfitting your home with replacement windows and doors can be here in St. Louis!

Meet The Owners

Dennis and Rhonda, Replacement Windows St. Louis MO

As a lifelong Missouri resident I have grown to love the people and beauty that Missouri has to offer. My name is Dennis Riley, and along with my wife Rhonda, we are most excited to be a part of the Zen Windows family. The two of us are thrilled to be providing a NO PRESSURE, simple way to buy replacement windows in St. Louis, MO.

Rhonda and I have always been involved in home building and remodeling as a way to earn a second income as well as provide a relaxing distraction from our full time jobs. Along the way, we discovered a peace that comes from seeing a project completed, as well as the satisfaction of seeing others enjoying the fruits of our labor. For us, happiness is not achieved through material things so much as the whole experience of life and the people we have met, and have yet to meet, along the way. That is where Zen Windows enters the scene.

For some time we looked for a business that would provide both a product and a service. Since neither of us is fond of being on either end of a high pressure sales routine, we were intrigued by the whole Zen Windows philosophy of letting the customer decide exactly what they want, and then, get a Window Quote in 5 Minutes. Sure, we can help answer any questions the customer may have, but ultimately we put the decision to purchase replacement windows in the hands of the customer. It is our goal to leave every customer thinking "Why isn't everything this easy and hassle free?" With Zen Windows you can RELAX... because it really is that easy!

Locations Served

  • Arnold, MO
  • Ballwin, MO
  • Branson, MO
  • Bridgeton, MO
  • Chesterfield, MO
  • Defiance, MO
  • Fenton, MO
  • Florissant, MO
  • Kirkwood, MO
  • Maryland Heights, MO
  • Mehlville, MO
  • Nixa, MO
  • O’Fallon, MO
  • Ozark, MO
  • Republic, MO
  • Rogersville, MO
  • Springfield, MO
  • St. Charles, MO
  • St. Louis, MO
  • St. Peters, MO
  • Sunset Hills, MO
  • Webster Groves, MO
  • Wentzville, MO
  • Wildwood, MO
  • Winchester, MO

St. Louis MO Replacement Window Options

St. Louis MO Window Replacement Project Examples

Beautiful One-Story Brick Tudor
Brick Tudor with Replacement Windows St. Louis Mo

Zen Windows renewed the classic look of this beautiful one-story brick tudor by replacing all of the windows with custom-designed casement windows.

  • Custom colors accent the color scheme both internally and externally
  • Eyebrow windows provide architectural interest while keeping with the original style of the home
  • Gorilla triple pane glass system provides maximum protection against wind and cold
  • Custom internal grid patterns within each window preserved to maintain the design integrity of the home

Frequently Asked Questions

Windows are supposed to last a lifetime; why would mine need replaced?

Windows constructed under outdated industry standards are mechanically fastened, and tend to crack or warp at the seams. This damage causes leaks and energy loss, serving up headaches for the homeowner. If your windows collect condensation or let in air, then it may be time to replace them for a modern vinyl window.

What makes a vinyl replacement window good quality?

Modern windows are now made of pure vinyl with no impurities added. This means that with correct manufacturing and installation your replacement windows can last a lifetime. When shopping for a replacement vinyl window, you’ll notice that vinyl windows are assembled through a process of fusion welding, which removes any impurities from the make up of a window. The result is a product with a strong and dependable sash and frame.

What other benefits are there to buying new windows?

If you’re looking for a bit more initiative for replacing the windows in your home, know that buying replacement windows is a strong long-term investment. Some of the benefits of replacing your current home windows include:

  • Increase the value of the home
    Whether you are looking to sell or staying, new windows can drastically increase the value of your home because they increase the curb appeal.
  • Improve the safety of your home
    New windows provide a sense of safety and security for homeowners, with locks that are dependable and sturdy
  • Provides exclusivity
    If you are trying to sell your home in a crowded market, new windows can give you that competitive edge to stand out from the rest.

  • Why do I need energy efficient windows?

    With the rising energy costs people want to save money in every way possible. New windows can cut energy costs and save homeowners up to $3,000 over time. Investing in energy efficient windows is a great way to upgrade your home while saving money!

    St. Louis, MO Window Replacement Videos

    Replacement Window Testimonials

    Dear Dennis,

    We just want you to know how impressed we were with Eddie,Kenny and Cody's work. The windows look AWESOME and they left our yard and house clean. We would happily endorse your company to anyone. Thanks for your honesty ,having such high caliber installers and being so easy to deal with.


    Charlotte and John Fuller

    Great work, thanks again to you and your installation crew. We are thrilled with windows and the finished look, but just as importantly, your service level was excellent.

    Best Regards,


    I appreciate the good work Zen did on my windows. I liked the quick and easy sales approach as well as the very quick turnaround time. The windows look great and I no longer feel like I live in a wind tunnel!

    Ryan McKinnley

    We are very happy with the service we received from Zen Windows. The crew did a fantastic job, neat, good craftsmanship-meticulous work! Thank you!

    Kellye Pinkleton
    Read More Zen Windows Testimonials

3636 S. Geyer Road
Suite 100
St. Louis, MO 63127
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Dennis & Rhonda Riley