ARC Mechanical Contractors(Bradford, Vt.) acquiredMontshire Mechanical Services Inc.(Lebanon, N.H.).

TradeWinds Mechanical Services(Exeter, N.H.) appointedDoug Kumphas its human resources manager.

Murphy Co.(St. Louis) hired Ben Westendorfas chief information officer.

Pro-Tech Air Conditioning and Heating Service Inc.(Orlando, Fla.) appointedMark Brodas comfort specialist in The Villages.

Publication date:02/08/2010