Geraldo R Homestead , FL May 02, 2016 Heater fan made very loud noises when on Removed the center shelf. slide forward just enought to clear the wires and set it down. Removed the 6 machine screws in the back panel. removed the 4 screws hold the fan. cut the wires and spliced in the new fan wires. reassemble in reverse order. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes