HVAC Service Technician - Class III - IV

Company : EMCOR Group
Location : Charleston, SC, 29401
Posted Date : 15 September 2025
Job Type : Other
Category : Installation & Maintenance
Occupation : Service Technician
Job Details
HVAC Service Technician - Class III - IV
EMCOR Services Aircond is a leading commercial and industrial heating, ventilating, and air-conditioning (HVAC) service company in the Southeast. For more than 87 years, Aircond has designed and delivered comprehensive HVAC solutions to businesses seeking to enhance their productivity and efficiency. Today, Aircond delivers a full spectrum of facility services to single and multi-site clients, from HVAC service to complete operations and maintenance solutions.
Job Title: Service Technician - Class III -IV
Summary: Install, service, and repair heating, ventilating, air conditioning systems, and related environmental-control systems. Utilize knowledge of heating and refrigeration theory, and pipefitting.
Location: This role is based out of the Charleston, SC office and serves the Charleston Metro area.
Essential Functions and Responsibilities: Posting covers Class 3, and 4 Class Service Technician. Duties are based on the candidate's qualifications below.
Class 3 Service Technician
- Understanding of 5 through 100-ton unitary DX equipment, chilled water air handlers, computer room units (CRAC), Pneumatic and DDC controls.
- Demonstrate advanced troubleshooting skills on 100 ton and less unitary DX equipment.
- Capable of all repairs needed on rooftop package equipment.
- Perform basic troubleshooting on air-cooled chillers.
- Troubleshoot and repair water cooled package equipment.
- Diagnose problems using electrical schematics.
- Diagnosing refrigerant system issues.
- Basic understanding variable frequency drives.
- Diagnose issues with variable air volume equipment (VAV's/PIU's)
Class 4 Service Technician
- All skills listed in the Class 3 category above plus the ability to perform trouble shooting and repairs on all types of air-cooled chillers, pumps, and low-pressure boilers.
- Advanced troubleshooting on all air-cooled equipment, both unitary and chilled water.
- Basic understanding of water-cooled chillers.
- Basic understanding of DDC control systems.
- Capable of maintaining and repairing cooling towers.
- Ability to diagnose water flow issues.
- Proficient with variable frequency drives and starters.
- Proficient with low pressure boilers.
Qualifications
- Strong written and verbal communication skills.
- Working knowledge of computer and tablets.
- Ability to deal with problems involving concrete variables in standardized situations.
- Ability to work well in a team environment.
- Strong adaptability skills.
Required Experience, Certifications, and Education
- High school diploma or general education degree (GED) required.
- Trade/Technical School certification or degree preferred.
- Four to five years plus of commercial/industrial HVAC experience including exposure to control, compound and reciprocating systems as well as refrigerants. Experience level is based on technician classifications described above.
- Valid Driver's License.
- EPA Universal Refrigerant Certification
Physical Requirements
Must be able to climb ladders, lift and carry 50 or more pounds, distinguish colors for electrical work and tolerate confined spaces. Work will involve heights and seasonal temperature extremes. Proper use of Personal Protection Equipment (PPE) is required while performing tasks.
What you can expect from Emcor Services Aircond
- Health Insurance: 4 plans available to choose from with Rx coverage
- Heath Saving Account (HSA) and Flexible Spending Accounts (FSA) options available
- Dental insurance: 2 plans available to choose from
- Vision insurance
- 401(k) with Employer Match
- Employee referral incentives
- Employee Assistance Program (EAP)
- Competitive PTO, 8 paid holidays, 1 paid floating holiday
- Weekly Pay
Commitment to Safety
It is the policy of EMCOR Services Aircond to conduct all business activities in a responsible manner, free from recognized hazards; and to respect the environment, health and safety of our employees, customers, suppliers, partners, and community neighbors. EMCOR Services Aircond is committed to providing a safe and healthy workplace. It will not be satisfied until its premises and services are free of recognized hazards, its employees, and its operations environmentally friendly. We will provide training, protective equipment, and the safest work environment possible for our employees to perform their jobs, but in the end, safety becomes an individual responsibility. We offer our employees a competitive salary and comprehensive benefits package and are always looking for individuals with the talent and skills required to contribute to our continued growth and success. Equal Opportunity Employer/Veterans/Disabled.
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