Costco itself does not typically provide a warranty for an upright freezer. However, some manufacturers include their own warranty with purchase. As of 2015, information about individual upright freezers and their included warranties are available to view on the Costco official website.
Whirlpool and Costco have a relationship concerning warranties on Whirlpool products, including upright freezers. The purchase of any Whirlpool product from Costco includes a two-year manufacturer's warranty. For more information on this offer, consumers can contact Whirlpool customer service directly at 1-866-698-2538, Monday through Friday from 8 a.m. to 10 p.m. EST, or Saturday from noon to 5 p.m. EST, as of 2015. Costco states that it offers a full refund at any time for products sold, with some exceptions, such as electronics.