ABOUT

Johnson, Spellman & Associates, Inc. (JSA) is an Atlanta‐based mechanical engineering firm with a rich and diverse history. Since its incorporation in 1986, the two‐man firm has evolved into a fully staffed engineering company.

JSA provides HVAC, Plumbing, Fire Protection, and Fuel System Engineering Services. We are licensed in 40 states. 

JSA provides a wide range of services from concept budgeting and programming to construction review and special investigation of all types of systems.