h&h AP

founders

andrew hollenbeck

Founder

Andrew’s technical foundation began in the U.S. Army as a 52C Utilities Equipment Repairer, maintaining generators, boilers, HVAC systems, and mission‑critical power equipment. Working on thermal and pressure systems in field conditions built a deep understanding of thermodynamics, system reliability, and operational discipline. He also served as an 88A in transportation/logistics, gaining practical command 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. He is a UA building‑trades journeyman and holds a Class 5 Oregon boiler/pressure‑system license, reflecting advanced competency in high‑energy mechanical systems. His expertise spans refrigerant dynamics, control‑loop stability, pressure‑vessel operation, and real‑world failure analysis. Andrew brings a lifetime of applied thermodynamic problem‑solving to the firm’s engineering and research direction, grounding advanced concepts in systems he has repaired, optimized, and trusted throughout his career.

Co-Fouder

Phillip 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. Working on equipment where failure was not an option shaped his approach to engineering: meticulous diagnostics, uncompromising system integrity, and disciplined execution.

After completing his military service, Phillip transitioned into civilian mechanical systems and has worked professionally as a chiller and boiler mechanic since 1992. He is a UA building‑trades journeyman and holds a Class 3 Oregon boiler/pressure‑system license, anchoring decades of field experience with formal state and union credentials. Phillip is also an AABC Air & Water Balance Engineer and has served as an ACG Commissioning Authority, bringing commissioning‑level rigor to system verification, performance testing, and documentation. His work extends into fire and life‑safety codes, where he has contributed 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, grounding the firm in standards‑driven practice, instrumentation accuracy, and real‑world system reliability.

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. As UA building‑trades journeymen holding Oregon Class 5 and Class 3 boiler/pressure‑system licenses, we bring state‑licensed, union‑standard mechanical competency to every aspect of our work. Our backgrounds span military instrumentation, AABC air and water balancing, ACG commissioning, and contributions to fire and life‑safety codes.

Our work is grounded in real‑world physics—systems we’ve repaired, optimized, and been trusted under pressure for our entire professional lives. This foundation shapes how we approach next‑generation reactor concepts: with engineering discipline, field‑proven thermodynamics, and a commitment to practical feasibility.

Our philosophy

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

  • UA building‑trades journeyman training, including Oregon Class 5 (Andrew) and Class 3 (Phillip) boiler/pressure‑system licenses

  • AABC‑certified air and water balancing expertise

  • ACG Commissioning Authority experience in system verification and performance testing

  • 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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