Chapter 20 — Master HVAC Diagnostics · 26
Field Verification Case
Reinforces checking airflow before touching refrigerant charge, avoiding an unnecessary and costly refrigerant-based misdiagnosis.
Stop Guessing: HVAC Airflow Made Simple — Advanced Airflow Diagnostics — Volume 1
By Roberto M. Morales
Miami HVAC contractor · 20+ years in the field
Advanced Field Measurements, Static Pressure, CFM, Cooling, Heating, Blower Motors, and System Performance
Compare field readings with airflow reference values before blaming refrigerant or replacing parts.
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Available New releaseAdvancedEnglishProfessionals
HVAC Professional Books · Field DiagnosticsStop Guessing: HVAC Airflow Made Simple — Advanced Airflow Diagnostics — Volume 1
Advanced Field Measurements, Static Pressure, CFM, Cooling, Heating, Blower Motors, and System Performance
By Roberto M. Morales
Move beyond basic airflow. Learn how to measure, interpret, and connect the operating numbers that reveal what the complete HVAC system is doing.
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Book price + applicable sales tax. That's all.
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- 246 pages of field-tested material
Watch the book in action
Stop Guessing: HVAC Airflow Made Simple — Advanced Airflow Diagnostics — Volume 1 — 360° showcase and interior tour
Full rotation of the printed edition followed by a walk-through of real interior pages.
Written by Roberto M. Morales
20+ years of real HVAC field experience
Step-by-step HVAC diagnostic system
Covers airflow, refrigerant, electrical & compressor
Practical field guide for HVAC technicians
Why this book matters
Real field experience, not recycled theory
Most airflow training stops at the basics. On a real service call the technician has to read several measurements at once and decide what the complete system is doing. Volume 1 teaches how those numbers relate — so the reading on the manometer, the blower table, the temperature split, and the motor performance all point to the same conclusion before a single part is replaced.
What readers will learn
Skills you take away
Every item below is covered directly in the book.
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
Diagnose heat-pump heating, gas-furnace airflow, and electric heat strips
Compare field readings with manufacturer published data
Identify true root causes instead of replacing parts
Verify every repair and reduce callbacks
Written for
Who this book is for
- HVAC apprentices
- HVAC students
- Maintenance technicians
- Service technicians
- Field supervisors
- Contractors
- Experienced technicians who want stronger diagnostic skills
The printed edition
3D book gallery
Photorealistic studio shots of the printed edition — front cover, 3/4 front, 3/4 back, side profile and top-down. Click any view to enlarge.
Airflow learning path
Foundation → Advanced Volume 1 → Advanced Volume 2
Three books, one progression. Start with the fundamentals, move into advanced field measurements, then finish with complete-system troubleshooting.
Step 1 — FoundationStop Guessing: HVAC Airflow Made SimpleBuild the airflow fundamentals: static pressure, restrictions, blower basics, and a repeatable field-testing process.View this book →Step 2 — Advanced Volume 1Advanced Airflow Diagnostics — Volume 1Advanced field measurements: TESP, CFM per ton, cooling and heating performance, blower motors, and system performance.You are hereStep 3 — Advanced Volume 2Advanced Airflow Diagnostics — Volume 2Compressors, refrigerant diagnostics, superheat and subcooling, decision trees, and complete-system case studies.View this book →
Why HVAC professionals trust this work
Built from the field, written for the field
Every chapter is shaped by real service calls — not classroom theory.
20+ years of real field experience
Written by a working HVAC company owner in Miami — not a lecturer.
Designed from actual service calls
Every diagnostic pattern comes from real jobs on real equipment.
For technicians, apprentices, and beginners
Structured to meet you where you are and take you further.
Practical knowledge you can apply immediately
Clear language, real numbers, and steps you can use on the next call.
Part of a complete learning system
One consistent method used across the full HVAC catalog.
Written for lasting career value
Skills that hold up whether you're new to the trade or building a business.
Reader reviews will appear here once the first approved review is published.
About the author
Roberto M. Morales
Roberto M. Morales is the owner of an HVAC company in Miami and an author with more than 20 years of hands-on experience in the field. His work focuses on turning real service-call knowledge into clear, structured systems that technicians can actually use — on the roof, in the attic, and at the electrical panel.
This book is part of a growing catalog spanning HVAC professional and beginner titles, homeowner guides, romance, artificial intelligence, children's books, and Spanish editions.
FAQ
Frequently asked questions
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Written for hvac apprentices, hvac students, maintenance technicians, service technicians, field supervisors, contractors, experienced technicians who want stronger diagnostic skills.
This title is classified as Advanced.
English.
Choose your format
Book price + applicable sales tax. That's all.
FREE Standard Shipping — 48 Contiguous U.S. States
No paid membership required. No card processing fees.
Faster shipping, Alaska, Hawaii, Puerto Rico & Canada: optional, paid, shown before payment.
Secure checkout on RobertoMMorales.com. Printed to order and shipped with tracking.
Secure Stripe payment · Arrives damaged, misprinted or wrong? Report within 30 days for a replacement or refund. Policy
Professionally Printed. Carefully Packaged. Delivered with Care.
Seeing Is Believing!
Prefer to study in Spanish? This book is also available as DEJE DE SUPONER: Diagnóstico Avanzado del Flujo de Aire — Volumen 1, the Spanish edition by Roberto M. Morales.
Related HVAC books
More HVAC diagnostic books in this series
Available
The Complete HVAC Troubleshooting System
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.
View The Complete HVAC Troubleshooting System AvailableStop Guessing: HVAC Airflow Made Simple
A practical field guide that helps HVAC technicians understand airflow, measure system performance correctly, diagnose restrictions, and solve comfort problems with confidence.
View Stop Guessing: HVAC Airflow Made Simple AvailableStop Guessing: HVAC Airflow Made Simple — Advanced Airflow Diagnostics — Volume 2
Transform measurements into reliable diagnostic decisions. Follow complete-system evidence, identify the true root cause, and verify every repair.
View Stop Guessing: HVAC Airflow Made Simple — Advanced Airflow Diagnostics — Volume 2Continue your HVAC airflow training
Build the rest of your diagnostic system with the companion field guides in the Stop Guessing series.
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Previous book
Stop Guessing: HVAC Airflow Made Simple
A practical field guide that helps HVAC technicians understand airflow, measure system performance correctly, diagnose restrictions, and solve comfort problems with confidence.
Next bookStop Guessing: HVAC Airflow Made Simple — Advanced Airflow Diagnostics — Volume 2
Transform measurements into reliable diagnostic decisions. Follow complete-system evidence, identify the true root cause, and verify every repair.