Rheem is one of the largest retailers of water heaters and other heating and cooling devices in North America. With over 70 years in business Rheem’s brand of tankless waters are installed in countless homes across the United States, with many customers understanding the energy efficient benefits Rheem has used to create an efficient and money saving product. To build its brand the company acquired a pioneer in the industry, Ruud Manufacturing Company which had a well-known product line that complemented Rheem’s. Rheem’s product line is used in both commercial and residential applications and includes tankless water heaters, tank heaters, solar water heaters, commercial water heaters and water heater accessories. Rheem is constantly reinventing their product and increasing their innovation in order to develop a brand that is known worldwide and a product that builds brand loyalty. Rheem: Experience a New Degree of Comfort.