As of 2015, model numbers on Whirlpool washers are located beneath the washer lid on the tub rim. To find out the location of the model numbers on other Whirlpool appliances, visit the company's website.
Model number locations can be found under the "Service & Support" link on Whirlpool.com. Under the "Service and Support" link, both the "Manuals & Literature" and "Service & Repair" options contain a "Where's my model number?" link. From this link, a pop-up box appears with a list of appliances and the location of the model number.
Whirlpool sells a variety of washer models, including traditional top-loading, high-efficiency top-loading, high-efficiency front-loading and stackable washer-dryer combinations.