5.0
89 reviews

Love our new windows and doors

Our installation was scheduled for July 18 which was the beginning of the HOT weather in California. Our installation team got busy covering the carpets and removing the old windows and doors. . When they asked us to inspect and operate our new doors, windows and screens, we were amazed the job was completed and cleaned up so quickly.. Since then we have been so happy with our Milgard Windows and Doors. They make such a difference in the inside temperature and the outside appearance of our house. We also want to thank our Project Manager, Martha Orduna, for working so closely with us.

I had 4 windows installed and ordered 4 more!!

Design windows has been awesome!! So helpful with every step of the purchase! Now that I have a few new windows in that had to be replaced I have to order the rest. The look so good!! Mind you this is a custom log home in Big Bear Lake. My windows are trimmed out with hand carved log so I was very worried about the installation. David the installer handled it like a millwright pro!!! We were so impressed!! Install was clean professional and outstanding!!! I can’t wait for David to come back with the rest of the windows I just ordered!! Thank you Design windows!!

Love them so much I ordered more!

The windows look amazing!! The installers were awesome! I have hand carved custom log trim on my windows and was so worried about the installation.. David the installer was very careful about my log trim. He asked questions and asked if I had any questions throughout the install. David’s crew was clean neat and very respectful. I had David measure my other windows so I could get them ordered and request David to install them. The Best install ever!! I could not be happier!! Thank you!

Sliding patio door

I would like to rate design windows n doors as a top notch company. They are very professional in all the stages of the sales and installation l highly recommended them.

Dawn Capri

The two gentlemen that installed my windows on 7-22-2019 were wonderful. Very polite, did not waste time, new what they were doing and cleaned up when the job was finished. I love my windows.

Amazing customer service

YES , this company has a very professional people there since day one when I made a phone call requesting a windows quote, immediate they answer to my request and come over to my house the next day talking for couple hrs we decided to get the best beautiful windows. This people made everything so easy all the process went ver smothered, so finally the yesterday the windows got installed it , the installers guys very professional on time we did walk around before they install the windows and after all questions were answered correctly very respectful guys David and workers 👍thank you DESIGN WINDOWS & DOOR🙏

Great windows and patio door

The employees we very professional and polite and also showed up on time and as scheduled. The installed all the windows and patio door with care and made sure that I was informed of what was being done all thru the process. The made sure that we walked the whole house inside and out to insure I was satified and the place was clean. Also Martha was very helpful in informing me thru the process as to what was happening and she was very polite and helpful also. Thank you for a job well done.

Putting "service" in Customer Service

I was replacing all the windows and doors in my home at one time and in having 5 different companies bid on the program, I learned that not all of them do window AND door sales and installation. Design Windows & Doors does and from the time I contacted them they were always professional, courteous, and timely in their follow-up and on-site appointments. From administrative staff, to my salesman and the installers, everyone was genuinely friendly, helpful, and a pleasure to work with. My entire installation project was completed was between 9 a.m. and 3 p.m. -- including their clean up of the work areas and the hauling away of my old windows and doors. Highly recommend this company to anyone seeking quality products at affordable prices with very professional installation work.

Amazing Windows!

Professional Staff clean work. I'm very satisfied with the new windows and price.

Professional and efficient

We are very pleased with the installation that Design did for us. We met 4 window contractors, and Design was easily the most trustworthy and did not attempt any upsell. In fact, while other contractors were very willing to do exactly what we wanted, Design offered suggestions about combining windows, and gave us a beautiful huge window in our front room. The contract agreement was signed in on 5/3/19 and the install was completed on 6/27/19 by Jorge, Jose, and Ruben. They arrived promptly at 8am and had the job finished (5 windows to be replaced) by 12pm. They did a full walkthrough with me, did some touch-ups, and were overall very easy and pleasant to work with. I highly recommend Design Windows and Doors, and will rehire them again for our upcoming projects.

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Design Windows and Doors - Office Design Windows And Doors


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