Senior HVAC and Refrigeration Engineer Supervisor

Rizaldy Arceño, HVAC Technician

SAN JOSE, CA., **132, USA, +1-408-***-****, ********@*****.***

SUMMARY Dedicated Senior Refrigeration Engineer with over 20 years of extensive experience in HVAC and refrigeration systems. Expertise includes supervising maintenance teams to ensure peak operational efficiency for commercial refrigeration setups and precision in installation compliance. Successfully directed the overhaul of critical machinery, improving uptime metrics by 30%. Looking to leverage a proven track record in optimizing energy management solutions to significantly contribute to advancements at your organization. WORK EXPERIENCE

08/2023 – 09/2025 REFRIGERATION ENGINEER, TRIPLE J SAIPAN

Saipan CNMI, United States

Oversaw technicians to ensure efficient repair and maintenance of HVAC/refrigeration machinery, kitchen equipment, and bakery equipment for the company.

Directed technicians in the overhaul and repair of various machinery, including motors, compressors, pumps, blowers, fans, and ice-making machines, ensuring optimal performance in cube ice production, walk-in freezers, walk-in chillers, display cases, and rack system condensing units. Facilitated the installation of new HVAC/refrigeration machinery and its accessories, ensuring compliance with industry standards. Developed and implemented a quarterly maintenance schedule for all HVAC equipment across company properties. Diagnosed electrical control failures to rectify system malfunctions, and conducted heat load calculations while supervising the installation and commissioning processes of HVAC units.

04/2013 – 08/2020 SITE MANAGER, DRAKE AND

GORHAM ZAMBIA

Lusaka, Republic of Zambia, Zambia

Championed the overall project implementation, ensuring all milestones were achieved on schedule.

Managed daily site activities to maintain operational efficiency. Reviewed designs and shop drawings prior to site execution to guarantee compliance with specifications.

Prepared comprehensive documentation for material submissions. Participated in coordination meetings to align project stakeholders. Supervised all personnel in executing piping, ducting, and electrical/BMS control wiring to meet design requirements.

Submitted progress reports to the Managing Director, providing updates on project status.

Verified that all installations adhered to approved drawings and conducted inspections to identify and resolve deficiencies before pre-commissioning activities commenced.

Formulated commissioning method statements for client approval, ensuring clarity in execution plans.

Oversaw the supervisors in conducting hydro-testing, leak testing, and flushing of all piping systems to validate operational integrity. Managed supervisors in executing duct leakage tests in accordance with DW144 standards.

Supervised the commissioning of chiller plants, condensing units, indoor units, AHUs, FCUs, active chilled beams, extraction systems, and fresh air fan systems.

Conducted air balancing across all system diffusers by accurately measuring airflow across all AHUs and FCUs.

Performed water flow balancing within each system, adjusting balancing valves as necessary.

Compiled documentation reports including refrigerant pipe pressure testing reports, air duct leakage test reports, operation and maintenance manuals, and testing and balancing reports for submission to clients and consultants.

02/2011 – 12/2012 MECHANICAL/COMMISSIONING ENGINEER, PIPEWORKS BOTSWANA

Gaborone, Botswana

Reviewed designs and shop drawings prior to site execution to ensure compliance with project specifications.

Prepared thorough documentation for material submissions. Engaged in coordination meetings to facilitate stakeholder communication. Supervised the execution of piping, ducting, and BMS control wiring to ensure adherence to design requirements.

Guided technicians in the installation of cold room machinery, ensuring adherence to project specifications.

Submitted progress reports to the project manager, detailing project advancement and identifying challenges.

Verified that installations conformed to approved designs through comprehensive walk-through inspections, addressing any deficiencies before initiating pre-commissioning work.

Developed commissioning method statements for client approval, outlining the procedures and requirements for commissioning. Supervised technicians in conducting hydro-testing, leak testing, and flushing of all piping systems to ensure operational reliability. Directed technicians in performing duct leakage tests in accordance with DW144 standards.

Oversaw technician efforts in commissioning chiller plants, AHUs, FCUs, active chilled beams, extraction systems, and fresh air fan systems. Conducted air balancing measures across system diffusers by assessing airflow at each AHU and FCU.

Executed water flow balancing across system components, adjusting balancing valves as necessary for optimal performance. 05/2007 – 11/2009 SITE MECHANICAL ENGINEER, AL WASEET AIRCONDITIONING EST

Kingdom of Saudi Arabia

Conducted load calculations utilizing Carrier Block Load 4.15 software, Elite software, and duct design by equal friction method. Developed comprehensive ducting and piping designs that met project specifications.

Prepared detailed shop drawings for client approval prior to execution, ensuring all designs met regulatory standards.

Compiled bills of quantities and cost estimates to facilitate procurement processes.

Arranged and secured all necessary materials for project execution. Prepared technical and material submissions for client approval, ensuring compliance with specifications.

Supervised technicians during the installation of refrigeration equipment and its accessories, which included pumps, cooling towers, condensers, and evaporators.

Oversaw all ductwork installations, ensuring adherence to project specifications for grills, diffusers, fire dampers, volume dampers, sand trap louvers, exhaust fans, and relief dampers, and implemented quality checks throughout.

Managed technician activities concerning the installation of piping and wiring for the HVAC systems, ensuring precise execution as per plans. Supervised system testing and commissioning activities, validating compliance with project specifications.

Monitored and directed system testing and balancing operations, ensuring optimal performance and regulations adherence.

Oversaw the laying of conduit piping and termination of control wiring for HVAC instruments to the DDC panel (BMS).

04/2004 – 09/2006 MECHANICAL HVAC ENGINEER, DENA BMS CO. LTD SAUDI ARAMCO PROJECT

Kingdom of Saudi Arabia

Supervised technicians in the refitting of HVAC/refrigeration machinery on board vessels, ensuring compliance with project specifications. Guided technicians in the repair and maintenance of machinery, including motors, compressors, pumps, blowers, fans, and various refrigerated containers (Thermoking, Carrier Transicold, etc.). Oversaw the installation of new HVAC/refrigeration machinery and its accessories, adhering to strict compliance protocols. Ensured all HVAC/refrigeration machinery on vessels and terminals was operational and prepared general preventive maintenance programs aligned with scheduling for refit dispatch. Directed technicians in emergency breakdown situations, conducting overhauls on various machinery such as compressors, pumps, blowers, and motors. Diagnosed electrical control failures when systems failed to start, prepared heat load calculations, and supervised the installation and commissioning of HVAC units.

12/1999 – 01/2004 HVAC/REFRIGERATION PLANT MAINTENANCE ENGINEER, AL HOUSSAIN AL AFALIQ COMPANY

Kingdom of Saudi Arabia

Ensured operational integrity of all plant equipment, including ice plants, cold storage facilities, chiller plants, and sweet water plants, conducting repairs and maintenance in the event of breakdowns. Monitored daily operations of all equipment to ensure optimal functionality. Executed repairs on defective components of refrigeration machinery and conducted chemical treatments on sweet water plant permeators. Supervised the installation of tube ice making machines (VOGTH). Oversaw the installation of flake ice making machines and cold storage facilities, ensuring compliance with installation standards. Conducted repairs on all refrigerated container machinery to ensure reliability and performance.

04/1997 – 05/1999 REFRIGERATION AND HVAC MAINTENANCE TECHNICIAN, RASHIED AL BALLAA EST.KSA

Kingdom of Saudi Arabia

Ensured sustained operational condition of all HVAC/refrigeration machinery and accessories through ongoing maintenance and repairs. Executed periodic maintenance procedures such as oil changes, refrigerant charging, condenser cleaning, and cooling tower servicing, along with overhauls of compressors, electric motors, pumps, and blowers. Conducted load calculations and installed various HVAC units, ensuring compliance with project specifications.

Assisted in the installation of flake ice making machines utilizing R22. Supported the installation of plate freezer ammonia systems and cold storage solutions.

08/1991 – 04/1997 PLANT MAINTENANCE ENGINEER, AQUAFRESH SEAFOODS INC

Philippines

Supervised the installation of refrigeration machinery, including plate freezers, ice makers, cold storage solutions, and blast freezers to meet operational demands.

Oversaw and monitored the operation and maintenance of all plant machinery and transport equipment, ensuring alignment with production requirements.

Took charge of the installation, operation, and maintenance of all refrigeration and air-conditioning machinery, striving to minimize breakdown occurrences.

Scheduled periodic preventive maintenance for all plant machinery in cooperation with the production division to mitigate operational disruptions. Supervised maintenance activities for all transport vehicles, assessing driver and mechanic performance to ensure standards were upheld. Ensured continuous availability of water and power supply to operational facilities.

Conducted repairs on all refrigerated containers to maintain operational integrity.

EDUCATION

06/1981 – 04/1991 CAPIZ INSTITUTE OF TECHNOLOGY

BACHELOR OF SCIENCE IN MECHANICAL

ENGINEERING, MECHANICAL ENGINEERING

Roxas city, Philippines

Graduated and passed the Mechanical Engineering Licensure Examination. License 0055171

SKILLS AUTOCADD HVAC LOAD CALCULATION USING

CARRIER HAP SOFTWARE

HVAC LOAD CALCULATION USING

ELITE SOFTWARE

HVAC LOAD CALCULATION

MANUAL METHOD

REFRIGERATION HEAT LOAD

CALCULATION

DUCT DESIGN EQUAL FRICTION

MATERIAL TAKE OFF AND

ESTIMATES

FULL KNOWLEDGE OF

ELECTRICAL POWER SUPPLY AND

BMS CONTROL

FULL KNOWLEDGE OF

HVAC/REFRIGERATION

OPERATION AND MAINTENANCE

FULL KNOWLEDGE OF CHILLED

WATER AND DIRECT EXPANSION

AIR CONDITIONING SYSTEM

Rack Refrigeration EPA Certification

Driver's License Problem Solving

Documentation Emergency Response

Compliance Lifting Heavy Items

CERTIFICATES MECHANICAL ENGINEERING LICENSURE EXAMINATION CAPIZ INSTITUTE OF TECHNOLOGY

1991

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