A mattress warranty covers manufacturer defects, such as sagging, slitting seams or problems with the structure of the mattress. The manufacturer typically replaces the defective mattress if it falls within the warranty guidelines.
The terms of a mattress warranty vary by manufacturer, so reading the fine print is important. The warranty establishes a time frame during which the defects must appear. A mattress warranty won't cover normal wear and tear on a mattress due to normal use. The warranty might establish other requirements, such as being free of stains, tears or other damage caused by the owner. Keeping all warranty paperwork that comes with the mattress helps the customer start the claim process quickly if a defect does appear after purchase.