As of 2015, the warranties for Whirlpool microwaves are available from the Whirlpool website. The Whirlpool website also has installation guides, use and care guides, and dimension guides for its microwaves.
To find the warranty for a current model, click on the Microwaves link found under the Cooking link at the bottom of the Whirlpool homepage. On the Microwaves page, click the link for the appropriate microwave oven model. A link for a PDF file version of the warranty is located under the Manuals tab.
To find the warranty for a discontinued model, click the Looking for a Discontinued Model link on the Microwaves page. Type the model number in the search bar that appears, and hit enter. If the model number is unknown, type "microwaves" in the search bar for a list of discontinued microwaves. Click the link for the appropriate microwave oven model. The warranty document is located under the Manuals & Literature tab.