meet the board


Our Board of Governors
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Nick Rosner


Nicolas Rosner is a Variable Frequency Drive-Lead Sales Engineer at Eaton. Nick’s VFD focus at Eaton is consulting engineer specifying support, contractor service, facilities training, and distributor sales. Prior to Eaton, Nick spent 7 years of his HVAC career at USAir Conditioning Distributors in both Southern California and Arizona. Nick Rosner is a licensed Mechanical Professional Engineer (CA & AZ). He holds a B.S. in Electrical Engineering from the California Polytechnic State University, San Luis Obispo. And, Nick has held officer and chair positions at Southern California, Central Arizona, and Tri-County ASHRAE chapters.

Barnabas Path


Barnabas is an energy consultant working with K12, University, Municipal, and Special District customers advising on strategic energy positioning as well as evaluating energy performance at portfolio, site, and operator levels.  Barnabas has owned an HVAC contracting business; designed, built, operated, and maintained a micro-turbine co-generation plant, supported a District Energy plant, and has been in sales with many ESCO’s including Honeywell, Siemens, and Johnson Controls. Barnabas has been the ASHRAE Sustainability Chair and received a B.S. in Mechanical Engineering Technology from Cal Poly Pomona.

Sierra Spitulski 


Registered professional engineer with experience designing HVAC/R systems in both new and remodeled healthcare facilities (both OSHPD and non-OSHPD), office TIs, and university/K-12 school districts. Engineering education from Fresno State (Bachelors of Science in Mechanical Engineering, minor in Mathematics and Physics) and UC Davis (Masters of Science in Mechanical and Aerospace Engineering). 

Roman Verdana


Roman Verba is a Mechanical Engineer with more than 40 years in the HVAC/R, working on various industrial, commercial and governmental projects. For the last 14 years Roman has been involved with LAX renovations projects. Prior to that for 17 years Roman was working on the renovations of Hyperion Waste Water Plant, where he was responsible for design and construction of water, waste water and ventilation system.
Roman has begun his carrier as a consulting engineer designing commercial HVAC, Plumbing and Fire Protection Systems.
Roman is a licensed PE, QCxP and LEED GA.

Ricson Chude


Ricson Chude is a professional mechanical engineer currently working at Southern California Edison where he manages the technical review of energy efficiency projects such as HVAC RCx, Refrigeration System Retrofits, and Pump System Upgrades.  He has served on the ASHRAE Southern California Chapter board for the past 5 years, holding the following positions: Technology Awards Chair, Chapter Technology Transfer Chair (CTTC), Research Promotion Chair, Student Activities Chair, and currently serving as Chapter Past President. Ricson Chude holds a Master of Science in Engineering Management from California State Polytechnic University of Pomona, and a Bachelor of Science in Mechanical Engineering from the California State University of Los Angeles. He is a licensed Mechanical Engineer in the State of California.

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Nelson Echeverry

BOG- Membership and Retention

Nelson Echeverry is a senior mechanical engineer at Donald F Dickerson Associates, with experience in mixed use high-rise & low-rise residential design. He has previously served as the YEA Chair and CTTC Chair for ASHRAE SoCal Chapter. He holds a Bachelor of Science in Mechanical Engineering with a concentration in HVAC&R from California Polytechnic State University, San Luis Obispo.

Carlos Ruiz

BOG- Student Activities, YEA & Historian

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Elyse Johnson

BOG- CTTC & Sustainability

Elyse Johnson, PE is a mechanical engineer at Infrastructure Factor Consulting, Inc. She has experience with K-12 schools, hospitals, and commercial building design. She has previously served on the Tri-County ASHRAE board before moving to the SoCal ASHRAE region. She received her bachelor’s degree in Mechanical Engineering from Cal Poly Pomona.

Eric Melendez

BOG- Director of PR & Correspondence