Brett S Fisher , IN January 05, 2016 Cooktop cracked Replacing the cooktop took about 15 minutes. After pushing the unit out, loosened 9 supporting screws and pushed the glass off. Wear gloves just in case the glass cracks more. The new cooktop is lightweight and easy to place. Once positioned, just tighten the screws and lower the unit back it place. All in all, an easy job and it was much better than replacing the whole thing. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes