XO WINDOW SYSTEMS
Contact for price
Scheduling
Sorry this pro can’t do your job, but we know other pros who can. Check them out
Introduction
At XO Window Systems, we specialize in window replacement and door installation services across SoCal, helping families improve comfort, efficiency, and curb appeal. Whether you need new vinyl windows, sliding patio doors, or energy-efficient upgrades, we deliver expert craftsmanship with a personal touch. We believe in doing things the right way—from the first consultation to the final install. Our licensed and insured team offers clean, careful work with no pushy sales tactics. Just honest options, real results, and a home that feels better than ever. We’re not just installing windows and doors—we’re helping you build a home you’ll love for years to come.
Services offered
Door type(s)
Exterior door
Interior door
Shower tub door
Storm door
Additional services
Paint or stain the door
Install locks or hardware
Install a door threshold
Install new trim around the door
Property type
Home
Multi-unit building
Office / business
Commercial
Projects and media
15 photos
Projects and media
15 photos
Reviews
Exceptional 5.0
16 reviews
5
100%
4
0%
3
0%
2
0%
1
0%
Read reviews that mention:
Past Customer
2 weeks ago
·
From Google
From Google
We were referred to XO Window Systems by my parents. Our consultation with Amir was wonderful, he was very informative and thorough in answering all our questions. We proceeded with XO and our windows were installed about 6 weeks after the initial meeting. The crew was awesome, they did a wonderful job at the prep work, covering and protecting our things, and installing the windows. We were surprised as to how quickly and efficiently they worked over the course of 4 days. We had a total of 26 windows installed including 2 that were raised requiring a build out. The new texture on the stucco and drywall matches perfectly and looks seamless. Additionally we had french doors taken out and changed into a sliding glass door. Everyday the crew cleaned up the spaces they worked in which was much appreciated. We definitely recommend XO Window Systems!
XO WINDOW SYSTEMS's reply
Hi Tristen
I really appreciate you trusting us with your home. It was a very big project and I’m happy that it turned out fantastic. Referral business is truly the best compliment we can receive and I’m so happy that your dad referred you to us. Thank you for your business and I hope you enjoy your windows forever. Remember if there’s anything you need, we’re always here as we have a lifetime installation warranty and lifetime window warranty. Thank you.
Past Customer
1 month ago
·
From Google
From Google
I recently had all the windows in my home replaced by XO Window Systems and I couldn't be happier with the experience from start to finish. The team was professional, courteous, and clearly experienced in their work.From the initial consultation to the final installation, everything was handled efficiently and with great attention to detail. They helped me choose the best energy-efficient windows for my home and provided clear pricing with no surprises.The installers arrived on time, worked quickly, and cleaned up thoroughly afterward. The difference in both appearance and insulation is incredible my home is quieter and noticeably cooler in the summer heat.If you're looking for quality windows and top-notch service, I highly recommend Amir and the team at XO Window Systems. They made the process easy and stress-free, and the results speak for themselves.
XO WINDOW SYSTEMS's reply
Dear Stephanie
thank you so much for taking the time to post such a amazing and detailed review. When I stop by your house yesterday to check on the installation I was so happy to see that everything turned out great and looked amazing. I hope you enjoy your new windows forever. If there’s anything that you need in the future, please let me know as we’re always here to help. I look forward to serving your referral business as that’s the best compliment I can get.
Past Customer
4 weeks ago
·
From Google
From Google
Amir showed me all window options and delivered clear and comprehensive quotes. The deposit to get started was quite reasonable. The installation was on time as promised, the installers were professional and cleaned up after. Extremely pleased with the quality, service and friendliness of staff. Highly recommend XO Window Systems.
XO WINDOW SYSTEMS's reply
Hi Julie
Wow, thank you so much for posting such an awesome review for us. It was such a pleasure helping you with your windows. I look forward to servicing your referral business in the future as that’s truly the best compliment I can receive.
Remember, you have a lifetime warranty on everything including your installation so if there’s anything you need in the future, please give me a call directly
Past Customer
May 4, 2025
·
From Google
From Google
My name is Paris, and I live in Laguna Hills. We recently had our windows replaced by XO Window Systems, and I cant say enough good things about the experience!From the very first consultation, the team was honest, professional, and extremely knowledgeable about window replacement options. They walked me through everything without any pressure, which made the entire process so easy and stress-free.The window installation itself was flawlesson time, clean, and done with real attention to detail. Our home looks more beautiful than ever, and weve already noticed a big improvement in energy efficiency. The house feels more comfortable, and our utility bills have dropped noticeably.If youre in Laguna Hills or anywhere in Orange County and looking for energy-efficient window installation from a company that truly cares, I highly recommend XO Window Systems. As a homeowner, I couldnt be more satisfied!
XO WINDOW SYSTEMS's reply
Hi Parisa
Thanks so much for taking the time to provide your feedback. It’s been a pleasure helping you transform your home! I sincerely hope you enjoy your new windows for ever. Thank you for your trust and business.
Past Customer
Apr 13, 2025
·
From Google
From Google
XO Window Systems was fantastic from start to finish. The team was friendly, professional, and respectful in our home. What really stood out was that the owners themselves showed up a couple of times to check in and make sure everything was being done rightthat meant a lot. We had our installation done, and it was smooth and high quality. We couldnt be happier. Highly recommend!
XO WINDOW SYSTEMS's reply
Hi Jessica
Thank you so much for taking the time to provide your feedback regarding your experience with XO Window Systems. We strive to provide the best possible service for all of our customers and that is our laser focus. Trust is everything and you had so many choices of window companies to choose so we are so grateful and blessed that you chose our family run business. Thank you so much and if you ever need anything in the future, you have a lifetime warranty on installation and on the windows.
Credentials
License
License Type: C17 - Glazing (CA)
License verified on 7/29/2025
Background Check
Amir Mozaffarian