NIST is seeking an A/C Equipment Mechanic to support the safe and reliable operation of complex HVAC systems across campus. You will maintain, troubleshoot, and repair heating and cooling equipment to ensure research laboratories, specialized spaces, and campus buildings maintain the environmental conditions needed to operate efficiently and without interruption.
In this position at grade 10, you will: Operate, monitor, and regulate large, complex, and centralized HVAC systems to maintain desired temperatures, humidity levels, and air quality. Perform preventative maintenance, troubleshooting, and repairs on a wide variety of HVAC equipment, including commercial packaged units, chillers, steam systems, boilers, and control systems.
Analyze system issues and apply troubleshooting techniques to identify and resolve problems quickly and effectively. Interpret and work from blueprints, schematics, technical manuals, and specifications to plan and lay out work, determine repair methods, and ensure compliance with applicable codes and standards. Conduct regular tests and adjustments to optimize HVAC system performance and ensure the most efficient operation.
Operate heavy equipment such as snow blowers and plows to clear snow and ice from walkways and parking areas as weather events occur. In this position at grade 11, you will: Install, adjust, maintain, and repair complex HVAC systems tailored to the specific environmental requirements of laboratories and research facilities. Diagnose and resolve malfunctions in HVAC equipment, including commercial-grade units, chillers, steam systems, and boilers.
Install various types of ductwork and associated components, such as round, square, rectangular, and spiral ducts, as well as flexible ducts and connections, ensuring proper sealing and airflow. Analyze system performance data, interpret diagnostic reports, and implement corrective actions to optimize HVAC system efficiency and reliability.
Conduct comprehensive tests, adjustments, and precise calibrations on HVAC systems and components, ensuring adherence to industry standards and regulations. Utilize building management control systems to diagnose and resolve complex issues, implement modifications, and optimize system performance in response to specific space requirements.
Safely handle, store, and dispose of refrigerants and other hazardous chemicals following strict safety protocols and environmental regulations. Perform preventative maintenance, troubleshooting, and repairs on a wide variety of HVAC equipment, including commercial packaged units, chillers, steam systems, boilers, and control systems.
Assist with site snow removal during winter operations by operating snow blowers, plows, heavy equipment, and shovels to clear walkways, parking lots, and building entrances outside of normal business hours or as weather events occur.
This position is with National Institute of Standards and Technology, Department of Commerce.
The posted pay range is $32.38 – $39.7/hr.
Applications close on 2026-11-05.
This position is open under the 'Fed Transition' hiring path.
Source: USAJOBS.gov — U.S. Federal Government · Retrieved 2026-10-16 · Not affiliated with or endorsed by OPM or USAJOBS.gov
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