About Simplex Onsite

About Simplex Onsite - Simplex HeadquartersSimplex Onsite, Inc. (SOS) is the rental-equipment affiliate of Simplex, Inc., the leading manufacturer of Load Banks in the U.S. Simplex manufacturing site is located in Springfield, Illinois. Simplex and SOS jointly operate a nationwide network of rental and service centers.

Simplex is a fourth generation, privately held, independent family business in continuous operation since 1938. Unlike most of our competitors, we are truly independent, have never been sold/purchased and trace our ownership and management directly to the founder. At Simplex/SOS, our customers receive the personal service and attention to quality and performance that only a true family organization can deliver.

At Simplex Onsite, you rent load banks and accessories directly from the manufacturer capitalizing on the cost and performance benefits of manufacturer direct rentals. We at Simplex/SOS know how to design, build and apply load banks.

Being the manufacturer, SOS is uniquely able to Build-to-Rent. If what you need is not in our large fleet of rental products, we can Build-to-Rent. In addition, we can customize to your requirements. We are not restricted to inventory.

As an affiliate of Simplex, Inc., SOS draws upon the extensive engineering / manufacturing capabilities and service network of Simplex. SOS offers extensive engineering services to design rental systems and technical services to oversee setup and assure proper operation.

Simplex Onsite owns one of the largest and most diverse fleets of rental load banks and accessories in the U.S. with inventory maintained at both factory and regional rental and service centers.