We had frost/ice in the bottom of the freeze. It seemed to keep getting worse. I diagnosed the heater problem from the Sears parts website. It was the least expensive way to endeavor to fix the problem. It was difficult to install the coil. Plugging it in was simple. You need to wear gloves because some of the parts are sharp. It took about two hours to complete. It has now been 7 days without ice accumulating in the freezer. I'll keep counting the days free. Sometimes you believe you can fix a rainy day.