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68 reviews

They were just amazing!

All phone calls were returned in a timely manner and the men were very professional, clean and polite. She was always there for us. Very knowledgeable about the different types of windows. They were just amazing! Cleaned up everything and left my place the way it was before they came.

Excellent service overall

It was an excellent service overall. Really happy to have done it with your company. Very helpful the couple of times I called for information. He explained every question we had about the windows and the whole process of getting them with your company they arrived at the exact hour we had schedule, very punctual. They did a very good job with all the windows installation. They cleaned all the spaces they worked on, took all the old windows for disposal, I really liked that service.

Great Upgrade

Great upgrade to the house. Good quality windows, The whole process was very professional. Martha was very pleasant and kept me updated on the progress of the process. The installers were very professional , swift and kept everything clean. I'm very happy with the windows, they look really nice.

Great Service

Our experience was fantastic. Everyone was professional, on time, and great with follow up. We highly recommend DESIGN WINDOWS AND DOORS. Windows look great.

Design Windows install (Milgard)

Man these guys were on time and got to it did an outstanding job with installation and clean up friendly and informative and windows are awesome Thanks


Great experience. Done in a timely and professional manner. My windows look amazing. A real upgrade to my house. I will definitely recommend to friends and family.

Nice Work!

Very pleased with the customer service. Everyone is so nice!

I would recommend Design Windows & Doors!

Everything turned out as expected. We replaced 18 windows and 2 sliding doors.The team was on time and very courteous. They cleaned up nicely after the job was completed. We are very happy with the way our windows look. We love the mini blinds that are in between the glass panes on our sliding door! Great look. No more vertical blinds to mess with. Since we don’t open many of our windows, we chose to purchase fixed or picture windows. They make a big difference especially if you want an unobstructed view! If you are thinking about replacing your windows we highly recommend Design Windows & Doors.

Great Service

We were really pleased with our purchase of our much needed new windows. From the sales presentation to the measuring to the installation, everything was fantastic. The followup by phone and e-mail was very helpful. Martha and Oscar were extremely helpful in the process as was Amy. Thanks again. We were very pleased and they look great.

Excellent Service (start to finish)

Our process began 11/27/18 with an estimate and ended with the install on 2/25/19. We replaced six windows, two sets of French doors, and a front door. One of the windows was an increase in size, to about double. The French doors became sliders. The process went: Sales (estimate), Financing (if needed), Final Measure Appoitntment, Order placed, Wait for manufacture of goods, schedule install, and then—install. Weather permitting—keep in mind no installs during rain/snow. I made sure to have water available for the installers and I tipped each of them at the end of the day. They were fast, courteous, clean, generally just really good people! In fact, all those who I encountered with Design Windows were good people! Very communicative. I wish I could post pictures.

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Design Windows and Doors - Office Design Windows And Doors

  • 504 S Mountain Ave Ontario, CA 91762
  • (909) 377-4447