Headquartered in Knoxville, Tennessee, ShoffnerKalthoff MES, Inc. provides new and post construction services including HVAC, ... plumbing, electrical, process piping, industrial ventilation, millwright, boiler repair, sheet metal fabrication, design/build, and complete service and maintenance for HVAC, plumbing, electrical, refrigeration, and DDC controls. Offices in Blountville, TN, Asheville, NC and Roanoke, VA. read more