Our Team

At Parameter Generation & Control, we’re more than just a team – we’re a collective force driven to deliver exceptional humidity control solutions. Our team boasts a diverse range of backgrounds, from seasoned engineers to brilliant researchers, each bringing their unique expertise to the table. Every member of the Parameter team is deeply committed to exceeding customer expectations. We believe in providing not just cutting-edge products but also unparalleled service and support.

Home – About – Our Team

Stefan Cazzonelli

Chief Executive Officer

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.


Chief Operating Officer

Geoffrey Cook has been a Parameter team member since moving to Asheville in the spring of 2016. After spending a year in the test department, a year in service support, four years developing and managing the service department, and an additional year as Operations Manager, Geoffrey has moved into the role of Chief Operating Officer. Geoffrey studied Geology and Engineering at the University of Tennessee and has taken many additional courses in Electrical Circuit Analysis, Programming, Philosophy, and Business Management. His main focus is driving the lean evolution at Parameter to ensure the quality of product remains paramount as the company grows, improves, and innovates new products.


Facilities Manager

In 2013, Adam Breakey relocated from Charleston, SC to begin working with Parameter. But, as the grandson of founder Jack Hile, he’s been loyal to the company for his entire life. Adam has extensive experience in the service industry and applies that expertise to his current role as Sales Project Coordinator. In this role, he communicates directly with PGC customers to ensure that they have the best experience possible. He’s even traveled abroad to China, Mexico, and Australia in order to best serve customers’ needs. In his free time, Adam enjoys spending time outdoors, traveling and exploring the local breweries and restaurants available in the area.

Cindy Hile

HR Manager

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.

About Parameter

At Parameter Generation & Control, our mission is clear: to be the world’s leading innovator in precise humidity control solutions. We strive to exceed customer expectations through cutting-edge technology and exceptional service —- building a decades-long reputation of excellence in the industry.

Our core values are the foundation of everything we do:

  • Unwavering Quality: We are committed to providing the highest quality humidity control equipment, ensuring reliability and longevity for our customers.
  • Unmatched Innovation: Our team is constantly pushing boundaries, developing advanced solutions to meet the evolving needs of our clients.
  • Exceptional Customer Service: We go the extra mile to ensure our customers have a positive and productive experience with Parameter.