The evaporator in a Viking refrigerator is typically covered by warranty for a specific period, which is often longer than the standard one-year warranty. Depending on the model and the manufacturer's policy, the evaporator may be covered under warranty for 5 to 10 years from the date of purchase. This extended coverage on the evaporator is provided to ensure that the critical cooling component remains in good working condition for an extended period, offering peace of mind to the customer. It's essential to review the warranty documentation provided with the refrigerator or check Viking's official website for the exact details of the evaporator warranty coverage for your specific model.