Lawrenceville is the county seat of Gwinnett County and one of the oldest cities in metro Atlanta, incorporated in 1821. The average home in Lawrenceville was built around 1995, giving the city a housing stock that spans from mid-century in-town properties to 1990s subdivisions now entering their third decade. Older homes near downtown Lawrenceville often have original ductwork that has never been replaced, which reduces airflow efficiency and strains modern equipment. The city's mix of single-family homes, apartment complexes, and multifamily properties means HVAC needs vary widely across the same neighborhood.