HVAC Mechanic

Amentum is looking for an HVAC Mechanic to join our #pecan team!

• HVAC System Installation & Commissioning:
  • Install, repair, and commission HVAC systems and equipment, including chillers, cooling towers, air handling units, heat exchangers, steam systems, and associated ductwork.
  • Plan and execute the installation of new systems according to blueprints, manufacturer specifications, and applicable codes.
• Troubleshooting & Repairs:
  • Diagnose malfunctions and inefficiencies in large‑scale HVAC systems, including refrigeration systems, chillers, cooling towers, pneumatic controls, and steam/condensate systems.
  • Perform repairs or component replacements on electrical and mechanical HVAC systems, such as motors, compressors, valves, fans, and controllers.
  • Use diagnostic equipment, including manifold gauges, multimeters, thermometers, and refrigerant recovery units, to troubleshoot and verify system performance.
• Chillers & Cooling Towers:
  • Maintain and repair chillers, cooling towers, and associated components, ensuring consistent performance and operational efficiency.
  • Perform service tasks such as descaling, lubrication, fan balancing, water flow adjustments, and pump maintenance to prevent downtime or inefficiencies.
  • Apply technical expertise to ensure proper operation and integration of chiller systems with connected evaporators and condensers.
• Preventative Maintenance:
  • Perform scheduled preventative maintenance on HVAC systems and related equipment, including inspections, cleaning, filter replacement, and lubrication.
  • Monitor refrigerant levels and repair leaks as necessary while complying with EPA standards.
  • Inspect and maintain steam and condensate systems to support HVAC operations.
• Code Compliance & Safety:
  • Apply extensive knowledge of National and Local Building HVAC codes to ensure all work is performed in compliance with regulations and organizational standards.
  • Follow EPA guidelines for refrigerant handling and demonstrate safe work practices, including lockout/tagout (LOTO) procedures and personal protective equipment (PPE) use.
• Tool & Equipment Operation:
  • Operate and maintain hand and power tools related to HVAC installation and repair, ensuring safety and proper function.
  • Use specialized tools such as brazing kits, refrigerant recovery systems, vacuum pumps, and pressure gauges to complete tasks effectively.
• Documentation & Reports:
  • Maintain accurate records of repair and maintenance activities, refrigerant usage, and system testing results.
  • Update technical schematics, blueprints, and as‑built drawings to reflect system modifications or upgrades.
• Collaboration & Mentorship:
  • Collaborate with other trades, engineers, contractors, and facility teams to address HVAC‑related needs in mission‑critical environments.
  • Provide guidance and mentorship to junior technicians or team members for system installations and maintenance best practices.

While performing the duties of this job, the employee is frequently exposed to temperature extremes in both indoor and outdoor environments, including hot mechanical rooms or cold refrigeration systems; working near energized electrical systems, high‑pressure steam systems, and moving mechanical parts; handling tools, chemicals, and refrigerants that require adherence to safety protocols and PPE requirements.

The position requires physical strength and dexterity to lift and carry up to 50 pounds, frequently climb ladders, scaffolding, and stairs; work in confined or elevated spaces such as air ducts, crawlspaces, or cooling towers; manual dexterity for operating tools; visual acuity to inspect small components, read diagrams, and analyze system performance metrics; frequent standing, walking, bending, kneeling, and stooping during service tasks.

Noise levels can range from moderate to loud, requiring hearing protection in some situations.

• High school diploma or equivalent.
• EPA “Universal” CFC Certification (carried on person at all times).
• Master HVAC license.
• Thorough knowledge of refrigeration systems, chillers, HVAC, pneumatic controls, steam systems,…