Trammell Heating & Air is a trusted, family-owned HVAC contractor based in Jefferson, GA, serving Jackson, Gwinnett, Barrow, Hall, Clarke, Forsyth, and East Fulton counties. We provide expert heating and air conditioning installation, repair, and replacement; furnace, heat pump, and smart thermostat service; ductless mini-splits; ductwork; air purification and ventilation systems; and seasonal HVAC maintenance for residential and light commercial properties. With 24/7 emergency service, free estimates, and decades of experience, we keep Northeast Georgia comfortable year-round.