Service areas include, but are not limited to: Acworth, Alpharetta, Atlanta, Canton, Carrollton, Cartersville, Dallas, Decatur, Douglasville, Hiram, Kennesaw, Mableton, Marietta, Powder Springs, Roswell, Sandy Springs, Smyrna, Woodstock. Job Description: Heating, Ventilation and Air Conditioning (HVAC) technicians install, maintain and repair indoor air quality systems, such as air conditioners.