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HVAC Diagnostics
Structured troubleshooting that connects the customer complaint with operating data and system behavior.
Tampa Bay to Naples, Florida
Hazael J. Rodríguez Valero
Lead Service Technician
Residential & light commercial HVAC/R diagnostics and field service across Florida's west coast.
Professional Profile
Lead service built on field evidence.
Residential and light commercial HVAC/R service across Southwest & West Central Florida.
I work through service problems from the complaint and operating mode to the measurements that support a repair decision. My field work covers diagnostics, maintenance, heat pumps, electrical controls, airflow, and system performance.
As a Lead Service Technician, I support difficult calls, document findings clearly, and explain technical options to customers and teammates. Continued training and NATE certification strengthen that field-focused approach.
Core HVAC Expertise
Where field experience meets careful diagnosis.
A focused practice across service, system performance, and clear technical communication.
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Residential & Light Commercial Service
Field service and maintenance across residential equipment and light commercial systems.
03
Heat Pump Systems
Evaluating heating performance, defrost operation, reversing valves, and control sequence.
04
Electrical & Low-Voltage Controls
Troubleshooting thermostat calls, safeties, motors, contactors, and control circuits.
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Airflow & System Performance
Assessing airflow restrictions, coil condition, comfort symptoms, and operating performance.
06
Refrigerant Diagnostics
Using refrigerant-side observations alongside airflow and electrical evidence before recommending repairs.
07
Dehumidification & Indoor Air Quality
Reviewing moisture and ventilation concerns as part of the whole-system service picture.
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Maintenance & Field Leadership
Documenting findings clearly, communicating with customers, and supporting difficult service calls.
Professional Experience
A career built in the field.
From foundational residential service to leading complex calls across residential and light commercial systems.
Current role
Feb 2024 - Present
Service Area: Tampa Bay, Sarasota, Fort Myers, Lehigh Acres & Naples
Lead Service Technician
Armstrong Air & Electric
- Residential and light commercial HVAC service, diagnostics, and preventive maintenance.
- Troubleshooting for electrical, airflow, heat pump, and system performance issues.
- Clear technical explanations for customers and field documentation after service calls.
- Support on difficult calls with a focus on accurate findings and callback prevention.
Previous role
Jul 2023 - Feb 2024
South Florida
HVAC Technician
Xelor Air & Heat
- Residential HVAC maintenance, service calls, and customer communication.
- Built early field experience with diagnostics, system checks, and repair support.
- Earned positive customer feedback through professional service and follow-through.
Previous role
May 2023 - Jul 2023
South Florida
HVAC Technician
Heavenly Universal Air
- Entry-level field service work after formal HVAC training.
- Assisted with maintenance, system checks, and basic troubleshooting.
- Strengthened safety habits, service workflow, and customer-facing field skills.
Certifications & Training
Credentials that support the work.
Formal HVAC education, refrigerant certification, NATE credentials, and continued heat pump specialization.
Completed
South Florida Institute of Technology / Completed
Refrigeration and Air Conditioning Repair Technician
Official technical training focused on refrigeration, air conditioning repair, system fundamentals, and hands-on HVAC service preparation.
ESCO Institute / Certified
EPA Universal Certified
Certified to handle refrigerants across Type I, Type II, Type III, and Universal EPA categories.
NATE / Certified
NATE Core Certified
Demonstrates HVAC fundamentals in safety, tools, electrical, comfort systems, and applied service knowledge.
NATE / Certified
NATE Ready-To-Work
Entry-level HVAC credential focused on job readiness, basic system knowledge, and professional field expectations.
In progress
NATE / In Progress
NATE Air-to-Air Heat Pump Service
Heat pump specialization in progress, focused on operation, diagnostics, defrost control, reversing valves, and heating performance.
Selected Field Work
The work behind the words.
Equipment, controls, service setups, and technical documentation from residential and light commercial field work.
Light Commercial HVAC
Rooftop HVAC Service
Rooftop equipment and field-service context on a commercial building.
Controls
Control Programming
Control configuration and programming related to the ventilation control sequence and system operation.
Ventilation / Safety
Exhaust Ventilation Control
Control setup used to remove contaminated indoor air and discharge it outdoors as part of a ventilation safety process.
Preventive Maintenance
Residential Condenser Service
Outdoor unit service with diagnostic tools and operating checks.
Equipment Documentation
Outdoor Unit Condition
Equipment condition photo for service access and visible system state.
Commercial HVAC
Commercial Diagnostic
Commercial HVAC diagnostic review focused on system operation, refrigerant-side performance, electrical behavior, and field observations.
Field Documentation
Rooftop Service Workflow
Organized service tools, recovery equipment, and field workflow.
Customer Reviews
Trust earned on service calls.
Real customer feedback on technical care, clear explanations, and dependable field service.
35customer reviews
35rated five stars
Debbie Rogerson
Armstrong Air & Electric
5 out of 5 stars
“Hazael and Armstrong Air are wonderful. We had a dehumidifier leak and they were able to be here early the next day to fix it. Hazael was on time, polite, and explained the issue he found and was able to fix it the same day.”
Richard Scott
Armstrong Air & Electric
5 out of 5 stars
“I had a fantastic experience with Armstrong Air & Electric, and I want to especially recognize my technician, Hazael Rodriguez Valero. From start to finish, Hazael was professional, knowledgeable, and incredibly thorough. He took...”
Ruth Rutledge
Armstrong Air & Electric
5 out of 5 stars
“Excellent technical and customer service by Hazael. He definitely exceeded my expectations by taking the time to describe everything he was doing and everything I needed to do to maintain my HVAC system properly. He even checked a...”
Jen C
Armstrong Air & Electric
5 out of 5 stars
“Just wanted to take the time to recognize the amazing work that Hazael Rodriguez did in our house. From the initial interaction, he was very informative, professional, and very knowledgeable. He was able to take care of the issue...”
Angus McAlpine
Armstrong Air & Electric
5 out of 5 stars
Name spelling clarified from the original review.
“Hazael did regular maintenance today. He is super quick, explains all actions, and leaves everything neat and clean. Strongly recommend Armstrong and him in particular. The annual maintenance is a huge peace of mind. Very satisfie...”
Beyond The Field
Precision under pressure.
Competitive archery shaped habits that carry into technical service: discipline, focus, and deliberate improvement.
2018 Summer Youth Olympic Games participant
Precision
Archery taught me to focus on details, alignment, control, and repeatable execution - the same mindset I bring into diagnostics.
Discipline
Consistent progress in sports requires patience, repetition, and accountability. Those habits continue to shape how I approach technical growth.
Focus Under Pressure
Archery requires calm decision-making and mental control. In HVAC, that translates into staying composed during difficult troubleshooting.
Continuous Improvement
My athletic background helped build a mindset of practice, feedback, correction, and constant improvement.
Contact
Let's talk about the work.
For professional inquiries, field service opportunities, or a conversation about HVAC diagnostics and leadership, email is the best starting point.
Service area: Tampa Bay to Naples, Florida