Onsite Utilities Technician: NH3 & Plant Systems

Mars; Waco (TX); On-site; USD 60,000 - 85,000; Full time

Job summary

Mars in Waco, TX is seeking an Utilities Technician to operate and maintain NH3 refrigeration, boilers, compressors, AHUs, and related utilities. The role emphasizes safe, reliable performance, disciplined rounds, alarm response, and coordination with Maintenance.

You will perform preventive maintenance, support contractor work, manage logs in CMMS, and participate in root-cause analysis to reduce downtime, energy waste, and ensure regulatory compliance. Shift work may apply; on-site required.

Qualifications

• High school diploma or GED required; technical training preferred.
• 3+ years of industrial utilities or plant operations experience preferred.
• NH3 refrigeration, boilers/steam, and HVAC/AHUs experience desirable.

Responsibilities

• Operate and monitor NH3 refrigeration equipment and associated components.
• Manage boilers, steam distribution, condensate return, and related water treatment tasks.
• Coordinate contractor work and perform preventive maintenance in CMMS.
• Follow safety procedures including LOTO, confined space, hot work, and PPE.
• Support compliance programs and incident investigations; document inspections and actions.

Skills

Troubleshooting

Safety-first mindset

Communication

Team collaboration

Recordkeeping

Education

High school diploma/GED

Technical training preferred

Tools

NH3 refrigeration

Boilers/Steam (150 PSI)

HVAC/AHUs

Job description

Mars in Waco, TX is seeking an Utilities Technician to operate and maintain NH3 refrigeration, boilers, compressors, AHUs, and related utilities. The role emphasizes safe, reliable performance, disciplined rounds, alarm response, and coordination with Maintenance.

You will perform preventive maintenance, support contractor work, manage logs in CMMS, and participate in root-cause analysis to reduce downtime, energy waste, and ensure regulatory compliance. Shift work may apply; on-site required.