Rentech Boiler Services, Inc. is a boiler company employing approximately one hundred and thirty full-time employees who have a combined total of over 1500 years of boiler experience. In addition to the NBIC "R" Stamp, Rentech also holds the ASME "U" and "S" Stamps. These stamps added to the experience level of its service and manufacturing technicians and its highly qualified engineering staff, give Rentech the capability of being a true one-source boiler company. In addition, Rentech builds and repairs superheaters and economizers and is one of the few boiler repair companies to offer engineered rebuilds and upgrades using the headered membrane waterwall design.