how long to clean an oven
The length of a self-cleaning cycle varies greatly depending on the oven. It may be as short as 90 minutes or as long as five hours. The amount of time can vary on the same oven depending on the settings. For example, some ovens can be set for a short cleaning cycle for light soiling, or a long cleaning cycle for heavy soiling. Most units have a cycle that will run for at least three hours.