The standard self-cleaning cycle on a General Electric oven takes one and half to three hours to complete. However, additional time may be required for the oven to cool down to a safe temperature before unlocking and resuming normal use.
General Electric also manufactures ovens with a steam clean feature. The steam clean feature works best for smaller spills but lacks the power for removing larger, tougher messes. However, because the internal temperature stays lower than during the self-cleaning cycle, the oven does not lock, and the cycle completes in about 30 minutes.
Regardless of the cycle employed, the owner should reserve a few moments at the end to wipe out any remaining ash or debris.