It also produces and markets products in Argentina, Armenia, Australia, Bahrain, China, Chile,[4][5] Brazil, Canada, Iraq, Kuwait, Mexico,[6][7] New Zealand, Perú, Oman, Qatar, Saudi Arabia, Singapore, UAE, and Ukraine.

[12] Republic Steel made boilers and tanks, which allowed Rheem to enter the water heating business.

[12] During World War II, much of the company's efforts went towards wartime production, the manufacturing of shell casings, a liberty ship and aircraft parts.

[citation needed] Beginning in August 1970, Rheem began producing Heat pumps and HVAC units for residential applications based in Fort Smith, Arkansas.

[12][13] In 1983, Rheem introduced the Richmond Water Heaters brand, positioned to sell at hardware stores and home improvement centers.

[27] In July 2024, Rheem's Fort Smith facility highlighted its sustainability initiatives, which include reducing energy consumption and minimizing waste.

[34] In January 2022, DEJONG, an independent manufacturer and supplier of stainless steel hot water tanks headquartered in the Netherlands, was acquired from Nordian Capital.

[36] HTPG, a standalone company, produces the Russell, Witt, ColdZone and Kramer commercial refrigeration brands.

[13] In North America, Rheem and Ruud both manufacture and sell a full line of heating and cooling products for residential and commercial applications, including up to 98.7% annual fuel use efficiency gas furnaces, oil-fired furnaces, up to 20 SEER air conditioners, heat pumps, thermostats, air handlers, package units, and indoor air quality products such as media filters, UV lamps, and humidifiers.

[37] In many other countries around the world, the companies sell numerous types of water heating equipment, under the Rheem, Ruud, Richmond, Paloma, Splendid, and GE brands.

[citation needed] Swimming pool-related products include gas-fired and heat pump heaters sold under the Rheem and Raypak brands.

[citation needed] Protech replacement parts for HVAC systems are sold through the PROSTOCK retail program.

[38] Ruud worked for George Westinghouse (1846–1914), but eventually bought the rights to produce the product he invented and formed his own company in 1897.

These were used in schools and institutions, and included public address systems, reel-to-reel audio tape recorders, phonographs, as well as Combo organs.

[41][42][43] Rheem and Ruud also sold re-branded Briggs & Stratton residential Emergency power systems beginning in 2007.