AirTight Mechanical Inc. (Charlotte, N.C.) named Jimmy Jack (right) as critical site coordinator.

Daflure Heating, Cooling and Solar (Harrisburg, Pa.) completed the merger and long-term acquisition of O.L. Jacobs and Sons Inc. (Camp Hill, Pa.).

Lake Mechanical Contractors (Eustis, Fla.) appointed Tom Sherman (right) as president.

The Dwyer Group (Waco, Texas) was named one of the 50 Top Franchises for Minorities by the National Minority Franchising Initiative (NMFI).

Vital Mechanical Service (Kent, Wash.) was named 2010 Member of the Year by The Unified Group (Broadview, Ill.).

Jay Holstead of Comfort Systems USA Energy Services (Little Rock, Ark.), was appointed vice chair of the U.S. Breen Building Council’s (USGBC) Arkansas Chapter, effective Jan. 1.

Publication date: 12/20/2010