Home warranty plans cover a range of systems and appliances, depending on the plan subscription. Usually, homeowners can choose from plans offering different levels of coverage. Commonly covered systems include air conditioning, electrical, and plumbing. Plans may also cover household items like ovens, clothes washers, clothes dryers, dishwashers, and cooktops. In addition, homeowners may also purchase coverage for add-ons like pools, spas, a second refrigerator, well pumps, stand alone freezers, septic systems, and more.