Singer Heating and Cooling LLC is a veteran owned business specializing in expert repair and replacement of residential and light commercial air conditioning and heating systems. We are insured though Nationwide, Licensed by the State of Tennessee, and one of the only North American Technician Excellence (NATE) C-3 certified service providers in the greater Knoxville area. 100% of our service and installation work is preformed or overseen by a NATE certified technician.