Gallagher Engineered Systems(South Bend, IN) has been named sales representative firm forMcQuay International(Minneapolis). Responsible for hvac sales and system design in northern Indiana, Gallagher Engineered Systems will support the McQuay and AAF brands of commercial hvac equipment, including chillers, air handlers, rooftop systems, water source heat pumps, packaged terminal systems, unit ventilators and fan coils.