About Us


Arizona Vocational Training Institute's mission is to provide students with the skills and certification they need for a successful new career in one of the fastest growing industries nationwide: heating, ventilation, air conditioning, refrigeration, electrical controls and solar energy. We want to provide our students with the highest level of training and materials in order for them to become a successful technician in the industry.


Vocational Training Institute, LLC, DBA Arizona Vocational Training Institute has two primary shareholders, Laurence J. Zielke and Michael L. Howell. Dr. Zielke holds his Bachelor of Arts from Centre College, a nationally ranked top 50 liberal arts college, and his Juris Doctorate from the Louis D. Brandeis School of Law at the University of Louisville. Mr. Howell owns and operates construction companies and assisted living communities in the Southeastern United States. Luis Armendariz, school director has operated proprietary schools across the country for 15 years.

Marco Reguerin, lead instructor and Army veteran has taught HVAC/R (heating, ventilation, air conditioning, and refrigeration) for 27 years. He is an HVAC/R professional, approved by the Air Conditioning Contractors of America (ACCA) and has completed their Educational Program in Instructor Certification (EPIC). Marco is also certified and licensed through the North America Technician Excellence (NATE) as a residential instructor with a Master Mechanical License in the state of Virginia and Arizona. He has over 5,000 hours of vocational training in the HVAC/R field and 27 years of experience as a technician.


Our school provides all of the hands-on training on site. The school consists of two main classrooms where the students learn theory with live lectures that incorporate instruction on actual systems and their components. There is a workshop that has system modules for students to practice diagnostics and troubleshooting procedures to accurately service, maintenance, and repair real equipment used in the work field. The students practice their service and installation procedures in the outdoor workshops as well.

Continuing Education Seminars on HVAC/R and Electrical Controls