Hard-anodized cookware is generally considered dishwasher-safe, but it's important to check the manufacturer's instructions and guidelines specific to your cookware. The dishwasher's high heat, harsh detergents, and abrasive action can potentially affect the finish and performance of the cookware over time. Therefore, it's always best to refer to the manufacturer's recommendations.
In many cases, hard-anodized cookware is designed to withstand the dishwasher environment. However, some manufacturers may advise against dishwasher use to maintain the longevity of the nonstick coating or other special features. If the manufacturer indicates that the cookware is dishwasher-safe, you can place it in the dishwasher for cleaning. However, hand-washing is generally gentler on cookware and can help prolong its lifespan.
Always make sure to follow the manufacturer's instructions to ensure the proper care and maintenance of your hard-anodized cookware. If you are uncertain about the dishwasher compatibility of your specific cookware, it is advisable to wash it by hand to be on the safe side.