About HTPG

Heat Transfer Products Group (HTPG), headquartered in Duluth, Georgia, designs, manufactures and markets energy-efficient commercial and industrial refrigeration equipment and system solutions sold under the trusted premium brands: Russell, Witt, Kramer, and ColdZone. The manufacturing plant is located in Scottsboro, Alabama and warehouses are located in California, Texas and Alabama. HTPG is a member of the Rheem Family of brands.


Trusted since 1946, Russell manufactures a complete line of commercial refrigeration equipment and solutions—energy-efficient unit coolers, condensing units, condensers, and refrigeration controls—to match any refrigeration requirement. A member of the Rheem family of brands.


Since 1961, Witt has been a leading manufacturer of OEM commercial heat transfer equipment including unit coolers, air-cooled condensers, condensing units, and refrigeration controls. A member of the Rheem family of brands.


Kramer, founded in 1914, is a leading manufacturer of energy-efficient large refrigeration units, split systems, condensers and evaporators for the foodservice, food retail warehouse, industrial, and pharmaceutical industries. Kramer’s patented energy-saving technologies are recognized as the most efficient in the industry. A member of the Rheem family of brands.


ColdZone delivers green refrigeration technologies and is the world’s leading manufacturer of refrigeration equipment—evaporators, condensing units, fluid coolers, and defrost controls—specifically designed for the foodservice and convenience store industries. A member of the Rheem family of brands.