What's the most expensive thing to fix on a dryer?

What is the most expensive thing to fix on a dryer is control board or motor and heating assembly, with costs varying by brand. Most expensive repair is main control board or PCB, which costs $200 to $500 for part plus $100 to $200 labor, total $300 to $700, and for Samsung dryers control board can be $300 to $450. Second most expensive is motor that tumbles drum, replacement costs $150 to $350 part plus labor $150 total $300 to $500. Heating element assembly for electric dryers costs $100 to $300 part plus labor, but if entire heater housing needed can be $400. For gas dryers, gas valve and igniter assembly can be $200 to $400. Drum replacement is also expensive $300 to $600. Thermal fuse is cheap $20 to $50. Generally control board is most expensive because it is computer brain of dryer and requires programming. If dryer is old and control board fails costing $600, it may be more economical to buy new dryer $700 to $1000 rather than repair. Always get estimate from technician before proceeding, and check if under warranty.