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Corporate Officers

Mr. Darren Hernandez, President, Chief Operating and Chief Financial Officer, graduated from Lehigh University in 1982 with degrees in Marketing, Finance and Psychology. He grew up in Goshen, New York where he played football and in 1988 was inducted into his high school football Hall of Fame. After graduating from Lehigh University, Bethlehem, PA., Darren went to work for Armstrong World Industries, in their Commercial Ceilings Division, as a sales representative. He worked in Albuquerque, NM and San Francisco, CA before being hired by Keener Manufacturing, a commercial printing company located in Lancaster, PA, in 1985. At Keener Darren began as their National Sales Manager and was then promoted to General Manager. In 1989 John Stanley, who was in the process of re-purchasing Tri-Dim Filter from Whatman, contacted Darren and he agreed to leave Keener in order to assist in the turnaround of Tri-Dim. He began as the Assistant to the President, moved into the position of Vice President of Sales and Marketing, then to Executive Vice President and Chief Operating Officer and is now serving as the President, COO and CFO. He is also the corporate Secretary and Treasurer.

Darren lives in New Jersey with his wife Sharon and their three children. He also serves in his local church as an elder and coaches Little League baseball and Pop Warner football. He participates in many different sports activities, but particularly enjoys skiing.



Mr. William LoFiego, Executive Vice President and Chief Manufacturing Officer, graduated from California State University, Northridge in 1973 with a Bachelor of Arts degree and subsequently attended Law School at Southwestern. Bill worked for Whittaker Corporation from 1965 to 1975 in various management positions in the areas of quality control, research and development and production. From 1976 to 1985 he held department and executive positions in production and materials management in two other nationally based corporations (R&G Sloane, plastic pipe and fittings and Allegretti & Co., power garden tools). In 1986 Bill was involved in a clean room design and manufacturing business (Integrated Air Systems) where he met John Stanley. Soon thereafter, he joined Tri-Dim to manage their operations. Current responsibilities include corporate manufacturing and distribution. Mr. LoFiego and his wife, Joyce, reside in Charlottesville, Virginia and have four children and eight grandchildren. In addition to being appointed to a number of State Business Advisory Councils, Bill is active in local civic affairs and has held various elected positions that include the Economic Development Authority and the School Board.



Mr. Mark King, Executive Vice President of Sales and Marketing, graduated from Virginia Tech in 1982 with a Bachelors Degree in Marketing Management. Upon graduation he joined American Air Filter Corporation in a sales capacity. He was published at AAF and received numerous awards. Mark was promoted to branch manager with responsibilities in Virginia and the D.C./Maryland market. In 1989 Mark left AAF to join Tri-Dim Filter Corporation as Southern Regional Manager. Mark was soon promoted to Vice President of Sales and Marketing to develop sales through a distribution network, consisting of direct employees as well as a strong independent distribution network. In 2002 Mark was promoted to Executive Vice President of Sales and Marketing at Tri-Dim with the added responsibility of overseeing the expansive Research and Development Department. Mark has an encouraging vision for Tri-Dim's future as a complete indoor air quality company emphasizing innovative product, IAQ testing and sampling as well as an extensive service and remediation department.

Mark was married in 1987 to his wife Christine. Together they have four children. They reside in Charlottesville, Virginia. Mark is a committed Christian and enjoys various outdoor activities with his family.

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Last Updated on Friday, 16 June 2017 14:57