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

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

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

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

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

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

Publication date:12/20/2010