Our clientele are primarily end-users and building owners but also include other design firms such as architects and engineers.  In addition, we provide significant design services to multiple mechanical, electrical and fire suppression contractors. Below are some of our many clients over the years.

  • Cushman and Wakefield
  • PSEG
  • Museum of Natural History
  • Nabisco
  • Curtiss Wright
  • Verizon
  • Princeton University
  • Wayne Township
  • Chubb Insurance
  • MET Life
  • Marriott
  • Pfizer
  • Continental Insurane
  • BMW
  • Bristol Meyers Squibb




TJD Engineering is a multi-disciplined engineering firm established in 1992.

We provide engineering consulting and design for HVAC, plumbing, electrical, and fire protection to the greater NY tri-state area.