Most new built-in dishwashers come with a warranty from the manufacturer. Depending on the retailer selling the dishwasher, there also may be protection plans available. For instance, when buying from Lowe's, a customer can purchase a three- or five-year protection plan for an additional cost.
Manufacturers warranties are standard on built-in dishwashers for the most part; each brand has its own warranties on parts and labor. In most cases, such as with Whirlpool built-in dishwashers, the warranty is a one-year warranty. Many warranties are limited, so it is important for new buyers of built-in dishwashers to look into what the warranty covers.