Complete 3 system furnace repair and preventative maintenance check. Change all 3 filter, check safety and operations. Find upstairs heating System operating with damage inducer assembly motor and making noise. Need to replace inducer assembly, need to replace weak flame sensor and capacitor. Need calibration for furnace. Find main level heating system operating with weak flame sensor, worn ignition and under-fire furnace, need to calibration system, replace sensor and do blower assembly cleaning. Find basement operating with worn ignition, weak sensor, dirty blower assembly, and under-fire. System flue pipe rusted and cracking. System all 3 system operating but not reliable and efficiency. Give customer estimate to repairs all 3 system. Suggest cci plan. Due to system age, need to replace equipment.