Our HVAC/R Service Technicians provide on-site equipment repairs for commercial HVAC and refrigeration equipment. We are seeking a customer service oriented individual to provide our customers with maintenance, repair, and installation of commercial HVAC and refrigeration equipment by diagnosing issues and replacing necessary parts. 


  • Diagnose and repair malfunctions in various types of commercial HVAC and refrigeration.

  • Order and install replacement parts as required.

  • Repair, replace, or calibrate controls, thermostats, switches, fuses, and electrical wiring.

  • Repair, replace, or calibrate components on natural gas and LP heating systems.

  • Fabricate, assemble, and install electrical wiring, controls, and piping as required.

  • Wire and connect motors, pumps, compressors, temperature controls, heating elements, and humidity controls as required.

  • Provide proper refrigerant handling procedures according to federal EPA code.

  • Be available for one weekend a month for Clark Service Group's on-call schedule.

  • Promote a positive work environment and company culture.


  • High school diploma or GED.

  • Strong mechanical aptitude.

  • CFESA Certificated Technician (preferred).

  • Associate's degree or certification in HVAC (preferred).

  • Valid driver's license and a clean driving record.

  • All technicians are subject to annual background checks, clearances, and certifications. Drug tests are administered before and periodically during employment.

Physical Requirements:

  • Must be able to work in extreme conditions (i.e.: hot, cold, dirty environment, etc.)

  • Must be able to bend, reach, and kneel.  

  • Must be able to stand for long periods of time.

  • Must be able to lift 50 pounds.

  • Must be able to work in all food service environments.


Lewes, DE


Field Service

• Weekly pay
• Paid holidays & PTO
• Paid parental leave
• Referral incentives
• Medical, dental & vision
• Prescription drug coverage
• Gym reimbursement
• Advancement opportunities
• Flexible 401K with matching
• Volunteer opportunities
• And more


Service technician performing diagnosis and repair of a commercial HVAC unit.