Job Details. Master HVAC Technician at Emmitsburg, Maryland. FULL TIME : PERM POSITION. Salary Range : $Flexible Benefits. Emmitsburg, Maryland 21727, USA. 100% ONSITE. Essential Duties and Responsibilities. Install, maintain, and repair heating, ventilation, steam, and air conditioning systems across campus facilities. Conduct routine inspections and preventative maintenance to optimize system performance and energy efficiency. Diagnose and trou...