Upon arrival i found the blower motor to not be running. I tested the capacitor on the fan and found it to have failed not allowing the motor to start up. Client wanted to go ahead with repair. After repair heating is working correctly. Also offered cleanings due to the condition of the blower wheel. 7.5 MFD RUN CAPACITOR REPLACEMENT SIMILAR TO A BATTERY, CAPACITORS HELP START MOTORS BY STORING CURRENT. A DAMAGED CAPACITOR CAN DAMAGE THE MOTOR IF NOT SERVICED. REGULAR MAINTENANCE IS ENCOURAGED.