Lee Co. (Franklin, TN), a design-build-maintain firm, has won two “Excellence in Construction Awards” from the Mid-Tennessee Chapter of Associated Builders and Contractors. The company won in the “Mechanical — Industrial Under $4 Million” and “Mechanical — Commercial Under $4 Million” categories.

Team Mechanical, Inc. (Wheeling, IL) is handling all the hvac work involved in the construction of a new retirement community in Lake Barrington, IL, announced Rick Bartuska, president. The project is expected to be completed next summer.

 The Mechanical Contractors Association (MCA) of Chicago (Chicago, IL) has added a new member company, BMW Constructors, Inc., of Munster, IN.

KeySpan Energy Solutions (Holtsville, NY) has announced the purchase of Air-Flow Technologies, an hvac contractor in Holtsville. Air-Flow will now become the KeySpan Airflow Division.