Mark S Lake City , FL January 30, 2015 Appliance: Whirlpool 24" Electric Oven RB120PXYB5 Whirlpool Oven Rb120pxyb5: Both elements weren't heating very well. How to replace Oven Bake Element. Replaced both elements. Took about 10 minutes for each element - 2 screws each. Couldn't have been easier. New elements fit perfectly, and the oven heats and broils much better now. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes