XO WINDOW SYSTEMS
XO Window Systems replaces windows and doors from its Santa Ana base and serves Southern California. Its lineup includes Milgard and Simonton products.
Business Highlights
- XO lists CSLB license 1127613, C-17.
- XO says it is licensed, bonded and insured.
- XO describes itself as family-owned and operated.
- XO lists a lifetime installation and workmanship warranty.
- XO says it uses only factory-certified, trained installers.
- XO says it is a certified dealer for Milgard and Simonton.
Service Area
Irvine, Anaheim, Santa Ana, Huntington Beach, Rancho Santa Margarita, Mission Viejo, Lake Forest, Laguna Niguel, Yorba Linda, Costa Mesa, Newport Beach and San Juan Capistrano.
Featured on ProsGrade. XO WINDOW SYSTEMS is one of 5 window installers ProsGrade lists in Santa Ana, California.
6 services listed, including Window replacement, Door replacement and Retrofit window and door installation. Open Monday to Saturday. Rated 5.0 from 53 reviews.
- Verified listing details
- Service information
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- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How XO WINDOW SYSTEMS compares with the other 4 window installers on ProsGrade in Santa Ana, using public Google ratings and review counts.
- Ranks in the top half of the 5 Santa Ana window installers on ProsGrade by Google rating and review volume.
- Rated 5.0 on Google, at or above the 4.9 average of other Santa Ana window installers on ProsGrade.
- One of 5 Santa Ana window installers on ProsGrade rated 4.7 or higher from at least 10 reviews.
Services Covered
6 services- Window replacementVinyl and fiberglass; double-pane and Low-E glass options
- Door replacementPatio sliding and French swinging doors
- Retrofit window and door installationNew units fitted over old frames with a mounting flange or z-bar
- New-construction window and door installationNail-fin frames installed directly to studs
- Energy-efficient windows and doorsProducts designed to meet California Title 24 building standards
- Custom window and door solutionsCustom shapes and colors
Reviews
What customers say
Several customers praise straightforward communication and efficient, tidy installation work. One customer says XO recreated a hard-to-find sunburst grid pattern that other vendors had not been able to match.
Customer Reviews
Anthony Park
Norman Kung
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Frequently Asked Questions
How long does a window project take?
XO gives a typical 4–8 weeks from order to installation; installation itself usually takes 1–2 days.
Does XO help with permits?
Requirements depend on the city and scope of work. XO can assist with pulling permits or guide homeowners through applying themselves.
What happens after a homeowner accepts a quote?
XO prepares an electronic work order, schedules a measurement appointment and places the order, then schedules installation around the shipping date after manufacturing.
Does XO create new window openings?
No. It does not take on major construction such as creating new window openings; that work requires a general contractor.








