The Unified Grouphas announced the addition of seven new members, bringing to 32 the total number of member companies. The new members are: Air Management Systems, Inc. (Miami), Arkansas Mechanical Services (Little Rock, AR), Donnelly Mechanical Corporation (College Point, NY), GM Mechanical (Covington, OH), Heating & Plumbing Engineers (Colorado Springs, CO), Mechanical Systems and Service (Monroe, LA) and Ruthrauff, Inc. (McKees Rocks, PA).