Whether or not you can put your Calphalon cookware in the dishwasher depends on the type of pan. Calphalon nonstick cookware is dishwasher safe, but hard-anodized aluminum pans should not be washed in the dishwasher as it may damage the finish. Stainless steel Calphalon pans are dishwasher safe, but handwashing is recommended. Some sources say that all Calphalon pans are dishwasher safe, but it's best to check the manufacturer's instructions to be sure.