The John E. Green Company is Johnny-on-the-spot when it comes to mechanical contracting services. The company designs, manufactures, installs, and maintains advanced mechanical systems for customers in the US. John E. Green has worked on robotic systems, automotive paint facilities, specialty piping projects, and water treatment and fire suppression systems. Its customers include General Motors, Ford, The University of Michigan, and Pfizer. The company operates from offices in Michigan as well as Tennessee and North Carolina. John E. Green founded the company as a plumbing and heating business in 1909. The Green family continues to lead the company.