Matthew D. Sanders became president of wholesale firm George T. Sanders Co. effective Jan. 1.

Matthew D. Sanders became president of wholesale firm George T. Sanders Co. (Wheat Ridge, Colo.) effective Jan. 1, succeeding Gary T. Sanders, who remains chairman of the board.

Scott A. Horner was promoted to vice president/sales and marketing. The new management team also includes Michael L. Raisch, CFO and secretary/treasurer; Thomas C. Tooley, vice president/finance and administration; and Beverly A. Sanders, vice president/human resources.

The plumbing and heating wholesaler has nine locations.