XO Window Systems

XO Window Systems replaces and installs vinyl and fiberglass windows and patio and French doors, working with Milgard and Simonton products. The company offers retrofit installation that keeps the home's exterior intact, new construction installation with nail fin frames set to the studs, and custom window solutions. Its products are described as meeting California's Title 24 energy standards.

The company offers free in-home estimates and a no-pressure consultation, and it will match written quotes from licensed, bonded and insured competitors on comparable materials. Its listed service area covers Orange County cities including Irvine, Anaheim, Santa Ana, Huntington Beach and Newport Beach. The office is at 1030 E 4th St in Santa Ana.