HVAC VRF Project Profesional

SENIOR VRF / COMMERCIAL HVAC MECHANICVRF VRV CITY MULTI LG AAON HYBRID SYSTEMSExperienced Individuals and Established Teams Welcome

Mountain Mechanical NY, Inc. is seeking experienced commercial HVAC/VRF mechanics with a minimum of five years of verifiable field experience servicing, troubleshooting, repairing, and commissioning sophisticated HVAC systems in Class A commercial buildings and high-end mechanical environments throughout the New York metropolitan area.

This is not an entry-level position. We are looking for experienced mechanical professionals who understand complete HVAC systems—not technicians limited to changing parts or working exclusively on one manufacturer.

Candidates should be comfortable moving between VRF/VRV systems, packaged equipment, hydronic systems, controls, refrigeration, ventilation equipment, and conventional commercial HVAC systems.

Experienced two-person teams are welcome and encouraged to apply.

REQUIRED EXPERIENCE

Candidates must have at least five years of verifiable commercial HVAC field experience, including hands-on experience with several of the following:

• Daikin VRV/VRF systems
• Mitsubishi Electric CITY MULTI
• LG Multi V / commercial VRF systems
• AAON packaged and applied equipment
• Hybrid HVAC systems
• Water-source heat pumps
• Commercial split systems
• Packaged rooftop equipment
• DOAS and make-up air systems
• Heat recovery systems
• Heat recovery boxes / branch selector boxes
• Commercial refrigeration circuits
• Hydronic heating and cooling systems
• Pumps, valves, strainers, and associated piping
• Building management and control systems
• Class A office buildings, multifamily towers, hotels, institutional facilities, and other high-profile commercial properties

TECHNICAL RESPONSIBILITIES

The successful mechanic must be capable of independently performing advanced HVAC service and diagnostic work, including:

• Diagnose VRF/VRV system faults and manufacturer error codes.
• Troubleshoot complete refrigeration circuits rather than replacing components based solely on fault codes.
• Connect and properly use manufacturer diagnostic/service software.
• Perform system commissioning and startup procedures.
• Verify proper equipment addressing and system communication.
• Troubleshoot indoor/outdoor unit communication failures.
• Diagnose branch selector, heat recovery, and refrigerant distribution problems.
• Troubleshoot inverter-driven compressors and associated electronics.
• Diagnose compressor, fan motor, EEV, thermistor, pressure sensor, control board, and communication failures.
• Troubleshoot conventional compressors, contactors, relays, transformers, capacitors, motors, and safeties.
• Perform electrical troubleshooting using meters, megohmmeters, and other appropriate test instruments.
• Read and interpret electrical schematics and ladder diagrams.
• Read mechanical plans, piping diagrams, sequence-of-operation documents, and equipment submittals.
• Understand single-phase and three-phase electrical systems.
• Diagnose phase loss, voltage imbalance, overcurrent, grounding, and power-quality problems.
• Perform refrigerant leak searches using appropriate electronic and pressure-testing methods.
• Recover, evacuate, pressure test, vacuum, charge, and commission refrigeration systems.
• Properly weigh refrigerant charges and calculate additional refrigerant requirements.
• Understand refrigerant piping limitations, equivalent lengths, elevation differences, and oil-management requirements.
• Properly braze refrigerant piping using nitrogen.
• Diagnose airflow and static-pressure problems.
• Measure supply, return, outside-air, and exhaust-air conditions.
• Evaluate evaporator and condenser performance.
• Diagnose economizer and ventilation problems.
• Troubleshoot condensate pumps, drains, float switches, traps, and associated drainage problems.
• Diagnose hydronic flow and water-temperature problems.
• Check pumps, valves, strainers, actuators, flow switches, and control valves.
• Evaluate entering and leaving water temperatures.
• Troubleshoot water-source heat pump systems.
• Work with boilers, pumps, cooling towers, condenser-water systems, and associated HVAC equipment where applicable.
• Diagnose DOAS, ERV, HRV, and make-up air equipment.
• Troubleshoot gas-fired heating equipment when applicable.
• Understand basic combustion and heating safety circuits.
• Interface with building management systems and controls contractors.
• Determine whether equipment failures are mechanical, electrical, refrigeration-related, control-related, installation-related, or building-system related.
• Perform factory-level troubleshooting before recommending major component replacement.
• Complete equipment startups and verification reports.
• Document refrigerant readings, electrical readings, temperatures, pressures, error histories, and diagnostic findings.
• Take clear jobsite photographs and provide accurate technical documentation.
• Prepare professional service reports describing the problem, diagnosis, corrective action, and recommendations.
• Generate accurate material and parts requirements.
• Communicate professionally with property managers, building engineers, superintendents, manufacturers, general contractors, and other trades.

REQUIRED TRADE DISCIPLINES

Applicants must possess strong working knowledge in multiple HVAC disciplines.

Refrigeration

• Vapor-compression refrigeration cycle
• Superheat and subcooling
• Pressure-temperature relationships
• Refrigerant charging
• Refrigerant recovery
• Evacuation and dehydration
• Nitrogen pressure testing
• Brazing
• Leak detection
• Refrigerant piping design fundamentals
• Variable refrigerant flow technology
• Electronic expansion valves
• Heat recovery operation
• Compressor diagnostics

Electrical

• 24VAC control circuits
• 120VAC, 208/230VAC, 277VAC, and 460VAC systems
• Single-phase and three-phase power
• Transformers
• Contactors
• Relays
• Capacitors
• Motors
• Variable-frequency drives
• Inverter technology
• Electrical safeties
• Grounding
• Phase monitoring
• Voltage testing
• Resistance testing
• Amperage testing
• Insulation resistance testing
• Electrical schematic interpretation

Controls

• Thermostats
• Sensors
• Thermistors
• Pressure transducers
• Actuators
• Relays
• Control boards
• Low-voltage communication networks
• VRF communication wiring
• Equipment addressing
• BACnet fundamentals
• Building automation interfaces
• Sequence-of-operation troubleshooting
• Manufacturer-specific controls

Airside Systems

• Airflow measurement
• Static pressure
• Fan operation
• Blower assemblies
• Belt-drive systems
• Filters
• Evaporator coils
• Condenser coils
• Dampers
• Economizers
• Outside-air systems
• Exhaust systems
• DOAS
• ERV/HRV
• Make-up air systems

Hydronics

• Pumps
• Circulators
• Control valves
• Three-way valves
• Strainers
• Flow switches
• Balancing fundamentals
• Water-source heat pumps
• Condenser-water systems
• Hot-water systems
• Entering/leaving water temperature analysis
• Basic chilled-water systems

Mechanical

Candidates must be comfortable performing real mechanical work, including:

• Compressor replacement
• Motor replacement
• Fan and blower repair
• Bearing replacement
• Belt and pulley work
• Valve replacement
• Piping repairs
• Refrigerant piping modifications
• Drainage repairs
• Equipment disassembly and reassembly
• Rigging and handling mechanical components
• Proper use of hand tools, power tools, and specialty HVAC diagnostic equipment

PROFESSIONAL REQUIREMENTS

Applicants must:

• Have a minimum of five years of verifiable commercial HVAC experience.
• Have verifiable experience working in professional commercial environments.
• Be capable of working independently without constant supervision.
• Be capable of diagnosing a system before recommending parts.
• Understand professional jobsite conduct required in Class A properties.
• Maintain clean and organized work areas.
• Protect finished spaces and occupied buildings.
• Communicate professionally with clients and building personnel.
• Complete accurate field documentation.
• Follow company safety policies and OSHA requirements.
• Be willing to continue manufacturer and technical training.

DRIVER'S LICENSE REQUIREMENT

Applicants must possess a clean, valid, verifiable, and commercially insurable New York State driver's license.

Driving history will be verified as a condition of employment.

CERTIFICATIONS PREFERRED

Strong consideration will be given to applicants possessing:

• EPA Section 608 Universal Certification
• OSHA 30
• FDNY Certificates of Fitness, where applicable
• NATE certification
• Daikin factory training
• Mitsubishi Electric CITY MULTI training
• LG Multi V training
• AAON factory or applied-equipment training
• Fujitsu VRF training
• Commercial controls/BMS training

Additional factory certifications are a significant advantage.

THE PROFESSIONAL WE ARE LOOKING FOR

We are looking for mechanics who understand that an error code is the beginning of a diagnosis—not the diagnosis itself.

The right individual can arrive at a difficult commercial HVAC problem, gather the necessary information, understand the system as a whole, perform a logical diagnostic process, determine the actual cause of failure, communicate those findings clearly, and make the repair correctly.

If your experience includes VRF, VRV, CITY MULTI, LG, AAON, water-source heat pumps, controls, refrigeration, electrical troubleshooting, and complex commercial HVAC systems, we want to speak with you.

EXPERIENCED TEAMS WELCOME

Established two-person service teams who have successfully worked together in commercial HVAC and VRF service environments are encouraged to apply.

Mountain Mechanical NY, Inc.

Factory Certified, Industry Proven.

Pay: $55.00 - $60.00 per hour

Benefits:

• 401(k)
• 401(k) matching
• Dental insurance
• Health insurance
• Life insurance
• Paid time off
• Vision insurance

Work Location: On the road