Winn Contracting Services is a female owned general contracting services company focused on HVAC replacement and electrical services. Based in Gainesville, Ga, WCS is owned by Sandra Winn Green. 

 Ms. Green has over 32 years of experience with contracting and competitive bidding In her previous position as CEO of Shared Services Healthcare, a regional group purchasing organization, as well as President of the East Coast for Medassets.