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Corporate Officers

Darren Hernandez

Darren Hernandez

President, Chief Executive Officer,
and Chief Financial Officer

Mr. Darren Hernandez, President, Chief Executive Officer 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.

Mark King

Mark King

Chief Operating Officer
and Executive Vice President

Mr. Mark King, Chief Operating Officer and Executive Vice President, 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.