Critical Systems Services, Inc. is committed to providing comprehensive solutions for any mission critical application. CSSI has been able to provide our clients with service and maintenance solutions for each individual application and in turn, enabling our customers to keep maintenance costs to a minimum.

With over 85 years of combined experience, CSSI began as a UPS service company and has grown to be one of the most recognized companies in the industry. Not only servicing UPS systems, but providing our clients with a single source for all their UPS and power related needs: UPS, generators, HVAC, batteries and many more. With our exceptional sales and service staff, Critical Systems Services has been able to flourish and maintain power quality equipment agreements in almost all of the 50 states.