Water heating is a thermodynamic process using an energy source to heat water above its initial temperature. Typical domestic uses of hot water are for cooking, cleaning, bathing, and space heating. In industry, both hot water and water heated to steam have many uses.
An appliance for supplying hot water for purposes other than space heating or pool heating.
Ruud and Rud are surnames of Norwegian origin. Both are also Norwegian place names of numerous farmsteads named Rud or Ruud from Old Norse ru? meaning clearing. Ruud is also a Dutch masculine given name meaning "famous wolf" although it is also often short for Rudolf.
Ruud water heater (they're still in business, this would be one of their earlier models). China Camp Villiage, China Camp State Park, San Rafael, Marin County, California.