Service and Parts


Sanja Motz_DirectorServiceSales.jpg

Sanja Dolezar-Motz
Vice President of Service Operations


Sanja manages the DVL environmental services team, using over 21 years of experience to get you top-notch service, from sale to implementation.

Sanja is a graduate of Holy Family University, where she earned a BS in International Business Management. She’s been with DVL since 1987. 


Dan Martnishn
Service Sales Manager


Dan provides you with a customized service program for your Liebert HVAC, power and monitoring equipment. His recommendations are backed by over 20 years of engineering experience.

Dan holds two degrees: a BSME from the University of Florida, and an engineering business certificate from the University of Pennsylvania Wharton School of Business. Previously, Dan worked with Johnson Controls, HYL and United Technology/Carrier Corp.

tinapenn.pngTina Penn
Service Sales Manager


Tina comes to DVL from Liebert Corporation where she spent 25 years in the Liebert Services Division. Tinas roles there were in Customer Service, Major Accounts, Sales, and Sales Management. Her longstanding experience in the industry brings exceptional customer service to DVL customers.


Lissa Wolf
Parts Sales Manager


Lissa manages the DVL parts department, managing a team that gets you the best parts in the quickest amount of time. She runs a tight ship, having been in the industry for over 17 years.

Where did Lissa spend every single one of those years? DVL – she joined the company for her first job in 1981, and hasn’t looked back.


David Newman
HVAC Parts Coordinator/Warehouse Supervisor




John Bartholomai
Parts Coordinator



Ryan Hoffman
Environmental Parts Coordinator