Our vision is to be the first choice for facility solutions by safely delivering exceptional quality, innovation, and customer satisfaction. Headquartered in Knoxville, Tennessee, Comfort Systems USA Shoffner provides new and post construction services including HVAC, plumbing, electrical, process piping, millwright, boiler repair, sheet metal fabrication, design/build, and complete service and maintenance for HVAC, plumbing, electrical, refrigeration, and building automation. Other offices in Blountville, TN, Asheville, NC and Roanoke, VA.