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.


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


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


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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.


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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.