Mason Donnelly
Anaheim,CA
Summary
Experienced HVAC professional with expertise in maintenance and installation. Enhanced indoor air quality and operational efficiency through proactive strategies and precise installations. Focused on delivering exceptional customer service and optimizing system performance.
Overview
3
3
years of professional experience
1
1
Certification
Work History
HVAC Maintenance
Applied Air Conditioning
Fullerton, California
09.2025 - 11.2025
- Performed preventative maintenance and repairs on mechanical, electrical, plumbing and HVAC systems.
- Executed preventative maintenance on HVAC equipment to maintain optimal performance.
- Completed minor electrical, plumbing and HVAC maintenance for new and existing HVAC systems and Boilers
HVAC Installer
TOTAL ENVIRONMENTAL MANAGEMENT, INC
Santa Fe Springs, USA
03.2023 - 09.2025
- Installed and removed portable AC units, including systems ranging from 1 to 12 tons, ensuring proper setup and functionality.
- Applied knowledge of heat loads and cooling capacities to enhance installation accuracy.
- Installed flex ducts to improve air distribution efficiency.
- Troubleshot and repaired various AC units, enhancing their operational efficiency.
- Serviced warehouse AC units to maintain optimal performance and reliability.
- Cleaned and organized warehouse to maintain efficient operations.
- Functioned as Level 2 install technician, supporting advanced installations and repairs.
Education
General - High school diploma
Savanna High School
Anaheim, CA06-2012
Skills
- HVAC expertise
- General maintenance
- Forklift operation
- Mobile elevating work platforms
- Analytical skills
- Leadership
- Supervision experience
- Customer service
- Military background
- Communication skills
Military Service
Navy, United States, E3, 03/01/13, 10/01/15, As an Aviation Boatswainmate Handling (ABH) Responsible for flight deck cleanliness, maintenance and repairs while in port. Out at sea responsible for FOD (Foreign object debris) walkdown, safe in launch of recovery of aircraft, safe movement of non-flying aircraft for scheduled maintenance by using a flight deck towing device. Qualified in basic intermediate and advanced stretcher bearing, basic flight deck maintenance, firefighting for class A, B, C, D fires, CPR.
Certification
• Dale Carnegie, 05/01/25
• Mobile elevating working platform, 02/01/25 - 02/01/30
• Forklift Certification, 02/01/25 - 02/01/28
• Valid Drivers License
• Mobile elevating working platform, 02/01/25 - 02/01/30
• Forklift Certification, 02/01/25 - 02/01/28
• Valid Drivers License
Timeline
HVAC Maintenance
Applied Air Conditioning
09.2025 - 11.2025
HVAC Installer
TOTAL ENVIRONMENTAL MANAGEMENT, INC
03.2023 - 09.2025
General - High school diploma
Savanna High School