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169 reviews

Quiet Cool install

I was very pleased in working with Leah and her team. They were very professional and didn’t give us the run around. I would highly recommend them to anyone who asks

Awesome job all around.

Had a great experience with Design Windows and Doors. Starting with Khelin in sales and going over everything in detail. He was the only one who brought samples. That was a big selling point. And then on the day of installation I was concerned about a few things and had to call him twice. He responded immediately and minor concerns resolved. Martha the design consultant was awesome. Always keeping us informed and and responding quickly with our concerns and changes in scheduling and with a friendly demeanor. We had to crews com out. Once for the doors and large window and another time for the rest of the 11 windows and 1 slider. Both crews were awesome. Quick work, professional, friendly, and cleaned everything very nicely. Including making the windows look spic and span before leaving. My neighbor used them and highly recommended them and I would highly recommend them. My wife and I almost don’t want to put blinds and curtains back up because they look so good. Really makes the house look much better.

Very Satisfied

I got a few windows along with a sliding door installed and decided to wait a week before I posted a review. I’m so happy with these new windows. I purposely leave room doors open so I can see them every time I pass by. The initial quote meeting was very informative and well explained. I don’t have any more heat blazing into the house, the outside noise has been reduced significantly, and they look great from outside/inside. The installers were professional and did great job with the finishing touches. There is constant follow up on the status of your order. I definitely recommend Design Windows.

Terrific Experience and Product

Replaced all windows and patio door with Milgard windows. We are very, very happy with the results. Brianna with Design Windows & Doors INC could not have been more wonderful. The customer service with this company was exemplary. Brianna followed up on a regular basis and checked it to alert me as things rolled out. The installers were perfect, wore masks, were personable and cleaned up. Once the windows were in she checked again. There was some glue on a few of the windows and she sent out a representative to remove it. All is well, we are happy and the windows are performing better than expected. Recommend windows and especially the company.

Super Happy

We had a custom door designed and installed. It is a GORGEOUS door. We are super happy! Brianna our project manager was in constant communication up to the install date. The installers did a great job and paid extra attention to protecting surrounding areas that would be affected by the install and they kept neat and clean.

Soooo Happy!

We are soooo happy with our new French sliding door with mini-blinds! What a difference it is already making, not only in the look, but it is also much quieter. Jorge was our installer. We live in a manufactured home, so there were a couple of challenges in getting the old door out. He took great care so as to not damage the inside of the frame (inside side of the wall). He also cleaned up after every step so that there was very little dust inside the house!


We has a terrific experience with Design Windows starting with our salesman Mike McLean. He helped us pick out the best windows to fit our 1940 home. No pressure (I HATE being pushed)...Brianna our project manager kept us informed during the whole process...The 2 installer were professional, pleasant, fast, and cleaned up when they were done.....I recommend this company....

Excellent Service

We had 3 large sliding glass doors replaced in our home and I was very happy with the service and installation. While it is still early I'm happy with the quality of the milgard sliding doors as well.

Replace windows

Iam very happy with the windows and the installation I would recommen design windows and doors to everyone. They have great customer service

What a difference !

Happy from start to finish. Working with Martha was a pleasure. She kept me updated on timelines and answered all my questions. The installers were a great bunch of guys, professional and hard working! They cleaned up after, and left property as they had found it. I would highly recommend Design Windows & Doors.

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5.0 out of 5
based on 169 Reviews
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Design Windows and Doors - Office Design Windows And Doors

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