Scott P Evans , GA July 11, 2022 Appliance: Whirlpool 30`` Built-In Electric Single Oven With Convection WOS92EC0AB00 Whirlpool Oven Wos92ec0ab00 / : Slow to preheat. How to replace Element, Bake 2800W. I replaced the bake element in the bottom of the unit. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes