Alpine Investors-backed Apex Service Partners, a platform of award-winning HVAC, plumbing and electrical services businesses, invested in Southern Air Heating & Cooling, a leading residential HVAC services company with locations across Louisiana and Mississippi. Financial terms were not disclosed. "We are thrilled and privileged to partner with Southern Air Founder and CEO Ira Preuett, and welcome Southern Air’s incredible employees to Apex. They have a proven history of providing fast, friendly and highly technical services that fit perfectly with Apex’s mission of building a people-focused national HVAC, plumbing and electrical services platform. Southern Air is an extremely impressive operation with a bright future of growth ahead.” AJ Brown, CEO of Apex.