Flooded household appliances create a potential safety hazard. Majority of the furnaces, water heaters, washers, dryers, kitchen ranges, dishwashers have some electric, electronic, and gas components located in the base. When exposed to high moisture levels or submerged under water, might start corroding, stop responding properly to controls, cause electrical failure generated fire or even a gas explosion. Therefore, after the flooding you should have them immediately evaluated by a licensed professional, and replaced compromised components or entire appliance.