HVAC Books for Technicians, Apprentices and Students

Stop Guessing: HVAC Fundamentals for Beginners — Volume 1

The System, the Science, and the History of Air Conditioning

Roberto M. Morales · English

Volume 1 of the Stop Guessing HVAC series gives new students, helpers, apprentices, and future technicians a clear foundation before they jump into troubleshooting, refrigerant readings, and electrical diagnosis.

The entry point: how heating and cooling systems actually work, the vocabulary of the trade, and the habits that separate technicians from parts-changers.

Who it's for: New HVAC students · Apprentices and helpers · Career changers entering the trade · Trade-school students · Anyone who wants a clear on-ramp into HVAC

• The purpose and history of air conditioning
• How an HVAC system actually operates
• Heat transfer, airflow, humidity & comfort
• Indoor and outdoor units working together
• Why ductwork and refrigerant matter
• How to start thinking like a real technician

Stop Guessing: HVAC Fundamentals for Beginners — Volume 2

Tools, Components, Refrigerant Charging Basics, Airflow, Electrical Basics & Installation Awareness

Roberto M. Morales · English

Volume 2 introduces the tools, components, and hands-on basics every new technician needs — refrigerant charging basics, airflow, electrical basics, and installation awareness.

Builds on Volume 1 with deeper system knowledge and the measurements that tell you what a unit is really doing.

• Core HVAC tools every beginner should know
• Major system components and what they do
• Refrigerant charging basics — safely
• Airflow fundamentals in the field
• Electrical basics without the fear
• Installation awareness from day one

Stop Guessing: HVAC Fundamentals for Beginners — Volume 3

Maintenance, Troubleshooting, Diagnostics, Refrigerant Readings & Real Field Training

Roberto M. Morales · English

Volume 3 moves the beginner into real field work — maintenance, troubleshooting, diagnostics, refrigerant readings, and the habits that separate a helper from a technician.

The middle of the series: applying fundamentals to real equipment and real service calls.

• Preventive maintenance done right
• First troubleshooting frameworks
• How to read refrigerant pressures
• Diagnostic thinking for beginners
• Real field training patterns

Stop Guessing: HVAC Fundamentals for Beginners — Volume 4

Safety, A2L Refrigerants, EPA Basics, Codes, Permits, Manufacturer Instructions & Installation Quality Awareness

Roberto M. Morales · English

Volume 4 covers the safety, compliance, and quality knowledge a modern HVAC beginner must have — A2L refrigerants, EPA basics, codes, permits, and manufacturer instructions.

Advancing toward professional-level work: sharper diagnostics and a more disciplined service process.

• Job-site safety fundamentals
• A2L refrigerants explained clearly
• EPA basics for new technicians
• Codes and permits — what beginners need to know
• Reading manufacturer instructions
• Installation quality awareness

Stop Guessing: HVAC Fundamentals for Beginners — Volume 5

Professional Practice, Documentation, Ethics, Customer Service & Career Readiness

Roberto M. Morales · English

Volume 5 closes the beginner series with the professional practice, documentation, ethics, customer service, and career readiness habits that turn a new technician into a trusted one.

The capstone of the beginner series and the natural bridge into the professional diagnostics track.

• Professional practice in the field
• Documentation that protects the tech and the customer
• Ethics on real service calls
• Customer service every technician should master
• Career readiness for the next 20 years

Stop Guessing: HVAC Airflow Made Simple

Understand Airflow. Measure It Correctly. Diagnose Problems with Confidence.

Roberto M. Morales · English

A practical field guide that helps HVAC technicians understand airflow, measure system performance correctly, diagnose restrictions, and solve comfort problems with confidence.

Airflow explained simply: measurement, basic static pressure and correction on central systems.

Who it's for: HVAC technicians · HVAC apprentices · Trade-school students · Service managers · HVAC business owners

• Understand HVAC airflow fundamentals
• Measure static pressure correctly
• Identify airflow restrictions
• Evaluate blower performance
• Diagnose weak airflow
• Understand supply and return problems

Stop Guessing: Advanced HVAC Airflow Diagnostics — Volume 1

Advanced Field Measurements, Static Pressure, CFM, Cooling, Heating, Blower Motors, and System Performance

Roberto M. Morales · English

Move beyond basic airflow. Learn how to measure, interpret, and connect the operating numbers that reveal what the complete HVAC system is doing.

Volume 1: advanced measurement, static pressure and duct diagnostics with step-by-step field procedures.

Who it's for: HVAC apprentices · HVAC students · Maintenance technicians · Service technicians · Field supervisors

• Measure and interpret static pressure and total external static pressure
• Calculate airflow, CFM, and CFM per ton correctly
• Evaluate cooling performance and temperature split
• Evaluate heating performance and temperature rise
• Diagnose condensing-unit and evaporator performance
• Understand ECM and PSC blower motor behavior

Stop Guessing: Advanced HVAC Airflow Diagnostics — Volume 2

Compressors, Refrigerant Diagnostics, Superheat, Subcooling, Decision Trees, Case Studies, and Professional HVAC Troubleshooting

Roberto M. Morales · English

Transform measurements into reliable diagnostic decisions. Follow complete-system evidence, identify the true root cause, and verify every repair.

Volume 2: compressors, refrigerant and professional whole-system diagnostics.

Who it's for: Intermediate technicians · Experienced service technicians · Advanced HVAC students · Maintenance professionals · Field supervisors

• Read and interpret compressor diagnostic numbers
• Separate compressor electrical failures from mechanical failures
• Diagnose refrigerant metering devices and condensers
• Evaluate refrigerant charge using superheat and subcooling
• Follow structured diagnostic decision trees
• Troubleshoot the complete system, not one component

Stop Guessing: HVAC Electrical Wiring Made Easy

Learn to Read, Diagnose, Troubleshoot, and Wire HVAC Electrical Circuits with Confidence

Roberto M. Morales · English

A field-tested guide that teaches HVAC technicians how to read wiring diagrams, diagnose electrical faults, troubleshoot controls, and wire HVAC circuits safely and with confidence.

HVAC electricity and wiring: diagrams, control circuits, components, measurements and electrical fault diagnosis.

Who it's for: HVAC technicians · HVAC apprentices · Trade-school students · Service managers · HVAC business owners

• Read HVAC wiring diagrams with confidence
• Understand line-voltage and low-voltage circuits
• Troubleshoot contactors, relays, and transformers
• Diagnose capacitors safely and correctly
• Trace 24V control circuits step by step
• Identify open, shorted, and grounded windings

The Complete HVAC Troubleshooting System

Diagnose Faster. Stop Guessing. Fix It Right the First Time.

Roberto M. Morales · English

A complete diagnostic system built on 20+ years of hands-on HVAC experience — engineered to help technicians diagnose faster, stop guessing, and fix it right the first time.

A complete diagnostic method: sequence of operation, airflow, refrigeration, measurement and confirming root cause before replacing parts.

Who it's for: HVAC technicians · Apprentices · Trade-school students · Service managers · HVAC business owners

• Based on 20+ years of hands-on HVAC experience
• Step-by-step field diagnostics
• Airflow troubleshooting
• Electrical troubleshooting
• Refrigerant diagnostics
• Compressor diagnostics