h&h AP
founders
andrew hollenbeck
FounderAndrew’s technical foundation began in the U.S. Army as a 52C Utilities Equipment Repairer, where he maintained and repaired generators, boilers, HVAC systems, and mission‑critical power equipment. His military experience built a deep understanding of thermodynamics, pressure systems, and field reliability under demanding conditions. He also served in 88A transportation/logistics, giving him operational awareness of system flow, load management, and mission planning.
Since 1998, Andrew has worked professionally as a chiller and boiler mechanic, specializing in high‑tonnage cooling systems, industrial heat‑transfer equipment, and complex mechanical diagnostics. His expertise spans refrigerant dynamics, control‑loop stability, pressure‑vessel operation, and real‑world failure analysis. Andrew brings a lifetime of hands‑on thermodynamic problem‑solving to the firm’s applied‑physics work.
Co-FouderPhillip Huntington
Phillip began his technical career in the U.S. Navy as a gyro technician, responsible for precision instrumentation, calibration, and high‑reliability navigation systems. This background instilled a meticulous approach to diagnostics, system integrity, and engineering discipline.
After his military service, Phillip transitioned into civilian mechanical systems and has worked professionally as a chiller and boiler mechanic since 1992. He is also a NEBB‑certified Air & Water Balance Engineer, contributing to NEBB’s current line of technical books and standards. His work extends into fire and life‑safety codes, where he has been a significant contributor to the development and refinement of industry‑standard texts and best practices.
Phillip’s combination of military precision, code‑level authorship, and decades of mechanical expertise forms a core pillar of the company’s engineering capability.
Who we are
Hollenbeck & Huntington
Applied Physics • Thermal Systems Engineering • Reactor Innovation
Hollenbeck & Huntington is an applied‑physics and engineering firm founded by two brothers with more than six decades of combined experience in industrial thermal systems, precision instrumentation, and mission‑critical mechanical environments. Our work is grounded in real‑world physics—systems we’ve repaired, optimized, and trusted under pressure for our entire professional lives.
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Our approach
Our philosophy is grounded in applied physics, engineering discipline, and the lived experience of professionals who have spent their careers working directly with the systems that move heat, energy, and force in the real world. We combine:
Military‑grade training in mechanical and electrical systems
NEBB‑certified air and water balancing expertise
Contributions to fire/life‑safety codes and technical standards
Decades of field experience with high‑tonnage chillers, boilers, and pressure systems
Precision instrumentation and diagnostics
A deep understanding of heat transfer, energy flow, and system stability
A commitment to safety, reliability, and practical feasibility
This foundation allows us to explore next‑generation reactor architectures with a perspective shaped by real‑world constraints, not theoretical abstraction alone.
Contact us
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