MalaceHR is seeking an experienced Senior HVAC Technician to support the operation, maintenance, troubleshooting, and repair of commercial HVAC systems. This position requires strong hands-on experience with chilled water systems, rooftop units (RTUs), VRF/VRV systems, VFDs, pumps, air handlers, and associated mechanical equipment.

The Senior HVAC Technician will serve as a technical resource for complex HVAC issues, perform preventative and corrective maintenance, and help ensure building systems operate safely, reliably, and efficiently.

Job Responsibilities

Perform advanced troubleshooting, diagnostics, maintenance, and repair of commercial HVAC and mechanical systems.
Maintain and troubleshoot chilled water systems, including chillers, pumps, valves, piping, coils, and associated controls.
Service and repair rooftop units (RTUs), air handling units (AHUs), fan coil units, split systems, and packaged HVAC equipment.
Troubleshoot, maintain, and repair VRF/VRV systems, including indoor and outdoor units, refrigerant circuits, controls, and communication issues.
Diagnose mechanical, electrical, refrigeration, and control-related HVAC failures.
Troubleshoot and adjust VFDs, motors, belts, sheaves, bearings, dampers, actuators, and associated components.
Perform preventative maintenance, including filter changes, coil cleaning, lubrication, belt replacement and adjustment, refrigerant checks, equipment inspections, and operational testing.
Monitor HVAC system performance and identify opportunities to improve reliability, comfort, and energy efficiency.
Troubleshoot chilled and condenser water flow issues, temperature differentials, pressure concerns, pumps, and control valves.
Perform refrigerant recovery, evacuation, charging, leak detection, and other refrigeration-related work in accordance with applicable regulations.
Interpret mechanical drawings, wiring diagrams, equipment schematics, sequences of operation, and technical manuals.
Utilize building automation and control systems to assist with equipment diagnostics and troubleshooting.
Respond to HVAC service calls and emergency maintenance issues in a timely and professional manner.
Complete accurate documentation of preventative maintenance, repairs, inspections, parts used, and equipment conditions.
Coordinate with vendors and contractors when specialized repairs or additional support are required.
Provide technical guidance and support to junior HVAC technicians and maintenance personnel as needed.
Ensure all work is completed in accordance with company safety procedures, manufacturer recommendations, and applicable codes and regulations.
Maintain strong communication with customers, facility personnel, vendors, and other members of the maintenance team.

Essential Qualifications

High school diploma or GED required.
TDLR registration or applicable state/local HVAC registration or licensing.
EPA Section 608 Universal Certification required.
Strong knowledge of commercial HVAC, refrigeration, electrical, and mechanical systems.
Demonstrated ability to independently diagnose complex HVAC equipment failures.
Ability to read wiring diagrams, mechanical drawings, schematics, and sequences of operation.
Strong electrical troubleshooting skills, including experience with motors, contactors, relays, sensors, VFDs, and control circuits.
Valid driver's license as required for the position.
Strong verbal and written communication skills.
Ability to work independently while also supporting a team environment.

Preferred Experience

5+ years of commercial HVAC service and maintenance experience, with senior-level troubleshooting responsibilities preferred.
Strong hands-on experience with chilled water HVAC systems.
Experience maintaining and troubleshooting commercial RTUs.
Experience with VRF/VRV systems, preferably across multiple manufacturers.
Experience with chilled water pumps, control valves, AHUs, FCUs, VAV boxes, cooling towers, and hydronic systems.
Experience troubleshooting VFDs, sheaves, belts, motors, and mechanical drive systems.
Familiarity with Building Automation Systems (BAS) and HVAC controls.
Experience working in commercial, industrial, healthcare, laboratory, critical environment, or large campus facilities is preferred.
Previous experience serving as a senior technician, lead technician, or technical resource for other HVAC personnel is preferred.