Ruud water heaters are available online either through the Ruud or Grainger websites. Both companies carry a wide selection of Ruud water heaters. Ruud manufactures heat pumps, media filters, UV lamps, solar water heaters, tankless water heaters, furnaces, air conditioners, thermostats, and air handlers.
Ruud was founded in 1889 by Edwin Ruud, who invented the first automatic storage-tank, gas-fired water heater. Ruud was later merged with Rheem Manufacturing Company. The Humphrey Company of Kalamazoo, Michigan was absorbed by Ruud in 1913.
As of 2015, Rheem Manufacturing Company is headquartered in Atlanta, Georgia. Rheem Manufacturing Company does not have any physical store locations, but instead sells through the Internet.