MEMPHIS, Tenn., September 15, 2020-- American Residential Services (ARS), the nation's largest provider of residential heating, ventilation, air conditioning (HVAC) and plumbing services, announced today that GI Partners, a leading private investment firm, is making a majority investment in the company. Existing investor Charlesbank Capital Partners (Charlesbank) and management are also making significant new investments in the business. Based in Memphis, Tennessee, ARS operates a network of more than 70 locally managed service centers in 23 states, with approximately 6,500 highly talented employees and the largest team of HVAC technicians and plumbers in the U.S.