Harriman business owner Chris Ahler is chairman of the Roane County Chamber of Commerce board for 2013-14.
Ahler sits on Harriman City Council.
He took over July 1 from Kenyon Mee, another sitting Harriman City Council member.
Mee is facility manager of Diversified Scientific Services, a subsidiary of Perma-Fix Environmental Services.
Mee will continue to serve on the board as chairman of the economic and community development committee.