If the oven does not heat, or if it heats without proper temperature control, then the oven is not fit for sale as an oven and the implied warranty of merchantability would be breached. In such a case, the law requires the seller to provide a remedy so that the buyer gets a working oven. The implied warranty of fitness for a particular purpose is a promise that the law says the seller makes when the customer relies on the seller's advice that a product can be used for some specific purpose. For example, if a customer asks an appliance retailer for a clothes washer that can handle 15 pounds of laundry at a time. If the retailer recommends a particular model, and the customer buys that model on the strength of the recommendation, the law says that the retailer has made a warranty of fitness for a particular purpose.
Implied warranties are promises about the condition of products at the time they are sold.
However, they do not assure that a product will last for any specific length of time. Nor does the law cover everything that can possibly go wrong with a product. For example, implied warranties do not cover problems such as those caused by abuse, misuse, ordinary wear, failure to follow directions, or improper maintenance. Generally, there is no specified duration for implied warranties under state laws. However, the state statutes of limitations for breach of either an express or an implied warranty are generally four years from date of purchase.