john croak

John has over 30 years’ experience in all aspects of HVAC trade servicing. His career has spanned some of the largest corporations and businesses in the New York City area. After serving in the US Navy, he acquired a degree from Technical Career Institute in Heating, Ventilation and Air Conditioning.

John then entered the field as Junior Technician and worked his way up the ranks before joining Donnelly in 2000 as a Field Supervisor, making him a proud member of our 10+ Year Employee Club. He currently is HVAC Service Supervisor and Training Coordinator for both HVAC Service and HVAC Construction departments at Donnelly Mechanical.

His licenses and certifications include:

  • Torch Use
  • Fire Watch
  • OSHA 30-Hour Safety Course
  • EPA Certification
  • Liebert
  • Mitsubishi (City Multi/Mini Splits)
  • Data Aire
  • Daikin VRV Systems
  • Ellis and Watts Process Chillers
  • Yaskawa Frequency Drives
  • UA Star Certification