If you believe your Whirlpool water heater has been recalled, you should first visit the recall information page on Whirlpool's official website at Repair.Whirlpool.com. There you can find detailed information about the recall and instructions on how to proceed.
Use the water heater's model number and serial number to determine whether it was included in an official recall. If so, you will need to contact the manufacturer using the information provided on the page to find out how they will fix the problem that caused the product to be recalled. Make sure to follow any safety warnings. You can also use the information page to find out where the product was manufactured, the reason for the recall, and whether any incidents or injuries have been reported as a result.