The Mechanical Contractors Association of Metropolitan Washington installed Matt Hahr as its 2007 president. Hahr is vice president of John J. Kirlin.
Other officers elected include: Carey Dove, president-elect (M&M Welding & Fabricators, Gaithersburg, Md.); and Pat Tonker, secretary-treasurer (Welch & Rushe Inc., Upper Marlboro, Md.)
Newly elected board members are Steve Levee (Joshua Construction Inc., Gaithersburg) and Jim Boland (Boland, Rockville, Md.).