Whether pots and pans can be safely placed in a dishwasher or should be hand-washed depends on the material and construction of the cookware. Here are some general guidelines:
Non-stick pans: It's generally recommended to avoid putting non-stick pans in the dishwasher, especially if they have a Teflon or similar coating. The high heat, harsh detergents, and abrasive action of the dishwasher can degrade the non-stick surface over time. Hand-washing with a soft sponge and mild soap is the best way to preserve the non-stick properties.
Carbon steel and cast iron pans: These pans should not be placed in the dishwasher. The dishwasher's high heat and aggressive detergents can strip away the seasoning (for carbon steel) or cause cast iron to rust. Instead, hand-wash these pans with minimal soap, if needed, and dry them immediately after washing.
Stainless steel pans: Stainless steel is generally dishwasher safe. However, hand-washing is recommended for maintaining the pans' appearance and performance over time, as harsh detergents and high heat can dull the stainless steel surface.
Copper pans: Copper cookware is not dishwasher safe. The dishwasher's detergents and heat can tarnish the copper and might damage any tin or nickel coatings. Hand-washing with a gentle copper cleaner is the best way to keep them looking their best.
Anodized aluminum pans: While some anodized aluminum pans may be labeled as dishwasher safe, it's still a good idea to hand-wash them when possible to prolong their lifespan and preserve their finish.
Enamel-coated pans: Many enamel-coated pans are dishwasher safe, but to be sure, check the manufacturer's instructions. Hand-washing is generally gentle and recommended to prevent chipping of the enamel.
Glass and ceramic pans: These are usually dishwasher safe, but you should check the manufacturer's guidelines to be certain. They are generally safe to hand-wash as well.
Always consult the manufacturer's instructions and recommendations for specific care and cleaning guidelines for your cookware. If in doubt, hand-washing is often the safest option, as it is less likely to cause damage to the pans and can help prolong their longevity.