Rodney B Loveland , CO September 14, 2026 Appliance: Model WHIRLPOOL WRX735SDBM00 Evaporator coils freezing up I replaced the Defrost Heater and the Fan Motor w/Harness (contains the thermoswitch for the Defrost Heater). I didn't know which part was defective, and I didn't want to tear apart the refrigerator twice (first finding the defective part and then replacing it). It was easier to just order both parts and replace them both. Thanks to the speedy response by Appliance Parts Pro, the parts I ordered arrived the next day after I ordered them. Mighty fine work by Applied Part Pros to package up the parts and sending them so quickly. Thank you. Read More... Do-It-Yourself Rating: Repair Time Estimate: 2+ hours Tools: Nut Drivers, Pliers, Screwdrivers