Tristan A Diaz
Long Grove,IL
Summary
Dedicated Union Pipefitter and HVAC/R Technician with 10+ years of commercial HVAC, refrigeration, and facility maintenance experience supporting high-volume retail operations throughout the Chicago area. Skilled in troubleshooting, preventative maintenance, EMS/BMS systems, rooftop units, walk-in coolers/freezers, and emergency service response. Proven ability to manage service operations across 100+ retail locations while maintaining a 95%+ service completion rate. Known for strong technical expertise, customer relations, problem-solving abilities, and delivering reliable solutions in fast-paced environments.
Overview
16
16
years of professional experience
1
1
Certification
Work History
Union pipefitters #597
CBRE
02.2018 - Current
- Lead HVAC/R service operations across 80–120 Walgreens stores, handling all maintenance, troubleshooting, and emergency repairs as the primary point of contact
- Conduct diagnostics and repairs on rooftop units, walk-in coolers/freezers, split systems.
- Lead preventative maintenance and emergency on-call response (24/7 coverage).
- Collaborate with cross-functional teams to meet client service needs and ensure compliance.
Associate Technician
Ecolab
12.2015 - 11.2017
- Serviced HVAC, refrigeration, and commercial kitchen equipment.
- Delivered efficient troubleshooting and preventive maintenance across varied client sites.
- Maintained strong client relationships through clear communication and professional service.
Associate Territory Service Specialist - Commercial Kitchen Equipment
Ecolab
10.2014 - 10.2015
- Complete Performance Checks on commercial food service equipment including refrigerators, ice machines, ovens, fryers, and complete beverage equipment preventative maintenance, installations and removals
- Complete in-service training of customer's staff on proper cleaning and daily maintenance of equipment
- Effectively manage time and resources to control costs, enhance efficiencies, and meet customer commitments
- Identify operating challenges that lead to kitchen equipment failure in restaurants, hotels, hospitals, and other commercial customers
HVAC Technician
Dave's Heating & Cooling
05.2013 - 07.2014
- Installed, repaired, and maintained HVAC/R systems including chillers, towers, compressors, valves, and pumps.
- Interpreted system diagnostics and performed complex mechanical fixes under tight timelines.
Toyota Service Consultant
Bredemann Auto Group
09.2010 - 01.2013
- Daily Usage Of Reynolds and Reynolds Program in relation to service module as well as other Toyota Programs
- Responsible for advising customers on which service, or maintenance, may need to be performed on a vehicle
- Liaison between customer and technician, and primary contact for customers at service department
- Provides specifics of the work performed on vehicle, goes over charges and answers all customer's questions
- High interaction with customer via e-mail and over the phone
Education
Facilities Planning and Management
Oakton Community College
01-2020
Associates in Applied Science - Air Conditioning, Heating, and Refrigeration Technology A.A.S
Oakton Community College
01-2015
Bachelor's degree Non-graduate - Arts, Entertainment, and Media Management
Columbia College Chicago
01-2007
High School Diploma - General Studies
New Trier Township High School Winnetka
01-2005
Skills
- Commercial HVAC/R Service & Repair
- Refrigeration Diagnostics & Troubleshooting
- Rooftop Units (RTUs) & Split Systems
- Walk-In Cooler & Freezer Systems
- Preventative Maintenance Programs
- EMS/BMS Monitoring Systems
- Commercial Kitchen Equipment Service
- Emergency Service & On-Call Response
- Mechanical & Electrical Troubleshooting
- Refrigerant Recovery & EPA Compliance
- Customer Relations & Client Management
- Service Operations Leadership
- Work Order & Preventative Maintenance Systems
- OSHA & Safety Compliance
- Team Collaboration & Communication
- Time Management & Territory Operations
- Pipefitting & Mechanical Systems
- Equipment Installation & Start-Up
- Root Cause Failure Analysis
- Retail Facility Maintenance Support
Certification
- Hydrocarbon Refrigerants
- EPA Section 608 Certification
- A Card Union Journeyman
Languages
English (Native or Bilingual)
Spanish (Professional Working)
Timeline
Union pipefitters #597
CBRE
02.2018 - Current
Associate Technician
Ecolab
12.2015 - 11.2017
Associate Territory Service Specialist - Commercial Kitchen Equipment
Ecolab
10.2014 - 10.2015
HVAC Technician
Dave's Heating & Cooling
05.2013 - 07.2014
Toyota Service Consultant
Bredemann Auto Group
09.2010 - 01.2013
Associates in Applied Science - Air Conditioning, Heating, and Refrigeration Technology A.A.S
Oakton Community College
Bachelor's degree Non-graduate - Arts, Entertainment, and Media Management
Columbia College Chicago
High School Diploma - General Studies
New Trier Township High School Winnetka
Facilities Planning and Management
Oakton Community College