Our Team

Meet our dedicated team members

Clay Hile

Clay Hile, son of Parameter’s co-founder Jack Hile, has been in the business of precise humidity control for more than 32 years. After earning a degree from the University of North Carolina at Chapel Hill, Hile joined Parameter and has been the company’s president for the last 29 years. He has been closely involved in the design, engineering and marketing of new Parameter systems to provide tighter control characteristics to industries that include semiconductor, pharmaceutical, electronic, pulp and paper, and calibration. In 2007, Hile and other investors launched Precision Stability Storage, LLC, in a strategic alliance partnership with Parameter to provide offsite storage space for highly regulated industries that require specific conditions. Away from work, Hile enjoys spending time with his wife and family. He also likes to play tennis, hike and travel.

Ross Hile

It’s safe to say that Ross Hile is the longest-serving Parameter employee. He, along with his father, Jack Hile, co-founded the company in 1977, after purchasing manufacturing rights, spare parts and drawings from American Instrument Company for their line of humidity and temperature conditioning products. He also advocated for Parameter to develop and manufacture new systems to increase the company’s product line and is responsible for engineering and designing several generations of rooms and chambers. Through the years, Hile has been responsible for upgrading or co-engineering controls from mechanical to analog to now digital. He still serves as the principal partner at Parameter as well as the engineering manager and managing partner of Precision Stability Storage, LLC, with whom Parameter has a strategic alliance partnership. He received his bachelor’s of science in education from Western Carolina University.

Vaughn Fisher

Vaughn Fisher is the chief financial officer of the Parameter group of companies and the general manager of Parameter Generation & Control. He is a graduate of the University of Georgia with a bachelor’s degree in business administration. During the course of his 43-year business career, Fisher has held CFO/GM positions in government, manufacturing and service industries. In addition to his CFO duties, he is responsible for manufacturing and service functions at Parameter. Fisher is a founding partner of Kaplan CFO Solutions, LLC, which provides fractional executive services to a variety of clients in western North Carolina and east Tennessee.

Lincoln Cook

For Parameter’s Lincoln Cook, business is all in the family. A native of Chattanooga, Tenn., Cook is the grandson of Parameter co-founder Jack Hile. He graduated from George Mason University with a degree in economics and began working at Parameter in 2015. He currently is studying for his MBA from Western Carolina University. In his spare time, Cook plays recreation soccer and enjoys trying out local beers.

Stefan Cazzonelli

Stefan Cazzonelli has been a valuable member of the Parameter team since 2015, and in 2017, he was named sales and marketing manager. Cazzonelli works directly with clients to understand their temperature and humidity control needs and to offer them energy-efficient and cost-effective solutions most appropriate for their circumstances. Originally from Germany, Cazzonelli came to the United States as an exchange student in 2008 with the goals of learning English and experiencing a different culture. He graduated from Montreat College in 2015 with a bachelor’s of science degree in business administration, and concentrations in international business, management and sports management, and he now calls Black Mountain, N.C, home.

Melvin Curtis

Melvin Curtis, Parameter’s service and testing manager, has been with the company since 2000. Melvin has served in just about every service role there is at Parameter—assembly, testing and service tech; new unit testing and installation; mechanical, electrical and refrigeration tech support; and validation tech. Born and raised in Black Mountain, North Carolina, he is a pro at troubleshooting and loves to help find solutions to our customers’ needs.

Barry Wilson

Born and raised in rural southwest Virginia, Barry Wilson has been with Parameter since 1984. He started out in Parameter’s stock room and performed various other jobs before receiving his Bachelor of Technology degree in Electronics Engineering from Western Carolina University in 1995. Barry has been Parameter’s electrical engineer since 2000, ensuring that our products are precisely engineered to serve our customers’ needs.

Geoffrey Cook

Geoffrey Cook has been a Parameter team member since moving to Asheville in the spring of 2016. His primary role is developing the service/maintenance department at Parameter to give our customers unsurpassed service. Geoffrey studied geology and engineering at the University of Tennessee and has taken several courses in management training, visual workplace, and 5S practices, a Japanese workplace organizational method. He is currently studying business at Asheville-Buncombe Technical Community College. Prior to coming to Parameter, Geoffrey served as manager at several restaurants.

Aaron Glenn

Aaron Glenn is the newest member of Parameter’s team, having joined the company in 2017. His nearly two decades of experience in the manufacturing industry, mostly involving lubrication equipment, makes him uniquely suited to the humidity and temperature control industry. Glenn is a Black Mountain native and a graduate of Owen High School. He is a happily married father of a 17-year-old daughter and 11-year-old son.

Cindy Hile

Cindy Hile has been involved with Parameter Generation & Control for 22 years. After earning a degree in social work and substance abuse, Hile worked in the mental health field for 10 years. In 1995, she joined Parameter to serve as human resource manager and has helped the company double its number of employees in the past 22 years. She and her husband have three children, with their youngest entering college in the fall. In her spare time, Hile enjoys playing tennis, hiking and traveling with her family.