John S Azle , TX January 03, 2021 The lower blower was making an annoying squealing sound on my KitchenAid oven. I got on your website and, after citing the problem, it led me to replacing the blower. I received the part in one day, and watched Simon’s remove and replace video. It took about an hour and a half, but easy to follow. Great website. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours