The Linac Coherent Light Source has commissioned the worlds first electron beam Laser Heater system. The LCLS Laser heater has become a vital FEL component to suppress microbunch instabilities and coherent synchrotron radiation effects. The Laser Heater control system consists of electron beam chicane, undulator magnet, IR-Laser system, laser optics stages and multiple diagnostics. Crucial lessons were learned during the design, testing and commissioning.