OSO Holding Group

OSO Holding Group operates from Fresno, California, serving the Central Valley region including Fresno and Clovis with round-the-clock availability. The company specializes in integrated energy solutions combining solar panels, battery storage systems, and HVAC installations for both residential and commercial properties. With a perfect 5-star rating from 31 customer reviews, the contractor has established itself as a trusted name for homeowners seeking comprehensive energy efficiency upgrades under one roof.

What distinguishes OSO Holding Group from typical solar or HVAC contractors is their unified project approach. Rather than coordinating multiple specialists, customers work with a single team that designs and installs solar, battery storage, and climate control systems as one optimized project. This integrated methodology delivers maximum efficiency and cost savings while ensuring all components work together seamlessly. The company also offers roofing services with solar-integrated options, allowing customers to address multiple home improvement needs through a single contractor.

Customers consistently highlight specific team members in their reviews. Reviewer Jonie Alvarez praised technician Brandon for arriving the next morning promptly and providing a thorough diagnosis at a reasonable cost. Dazia and her team received recognition from Christopher Hartje for managing several home energy efficiency projects with care and quality workmanship. Jessica Goforth noted the team walked her through every step without upselling unnecessary services, while Raul Gutierrez described a seamless installation process that significantly reduced his energy bills.