Senior HVAC Technician

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.

• 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.

• 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, contractors, 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.

• 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.