Thomas H Fort Bragg , CA October 12, 2014 Appliance: Whirlpool Refrigerator ET18HTXDW05 Whirlpool Refrigerator Et18htxdw05: Refrigerator too cold. How to replace Thermostat. Replaced thermostat 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes