HVAC Airflow Series — English

Diagnose HVAC Airflow With Measurements, Not Guesses

Three field-tested books on static pressure, CFM, blower performance, and complete-system airflow diagnostics. Pick your level and buy buy directly — secure checkout by Stripe.

Written by Roberto M. Morales — 20+ years in the field.

Start hereStop Guessing: HVAC Airflow Made SimpleGo deeperAdvanced HVAC Airflow — Volume 1Continue masteryAdvanced HVAC Airflow — Volume 2
Book cover — Stop Guessing: HVAC Airflow Made Simple by Roberto M. Morales
Start here

Stop Guessing: HVAC Airflow Made Simple

Roberto M. Morales · English

  • eBook$12.99
  • Paperback$44.99
  • Hardcover$56.99

For technicians who keep chasing weak-cooling and comfort complaints: learn to measure airflow correctly, find restrictions, and read what the numbers actually mean.

  • Static pressure and CFM measured the right way
  • Find duct, filter, and coil restrictions fast
  • Turn airflow readings into a clear diagnosis
See formats & buy direct — from $12.99
eBook$12.99Paperback$44.99Hardcover$56.99
Book cover — Advanced HVAC Airflow — Volume 1 by Roberto M. Morales
Go deeper

Advanced HVAC Airflow — Volume 1

Roberto M. Morales · English

  • Paperback$37.99
  • Hardcover$49.49
  • eBook$12.99

For working technicians ready to go past the basics: connect static pressure, CFM per ton, temperature split and blower performance into one picture of the system.

  • Total external static pressure and blower tables
  • Cooling and heating performance, temperature rise
  • ECM and PSC motors, heat pumps, gas furnaces
See formats & buy direct — from $12.99
Paperback$37.99Hardcover$49.49eBook$12.99
Book cover — Advanced HVAC Airflow — Volume 2 by Roberto M. Morales
Continue mastery

Advanced HVAC Airflow — Volume 2

Roberto M. Morales · English

  • Paperback$41.99
  • Hardcover$53.99
  • eBook$12.99

For experienced techs handling difficult and repeat calls: combine airflow with refrigerant and compressor evidence to confirm root cause and verify the repair.

  • Compressor, charge, superheat and subcooling diagnostics
  • Decision trees and complete-system troubleshooting
  • Real field case studies and repair verification
See formats & buy direct — from $12.99
Paperback$41.99Hardcover$53.99eBook$12.99

Why airflow comes first in HVAC diagnostics

Weak cooling, comfort complaints and repeat calls often trace back to airflow, and airflow problems can look like a refrigerant problem on the gauges. Checking airflow before touching the charge is part of the HVAC troubleshooting sequence used throughout these books.

Static pressure, CFM per ton and blower performance

Total external static pressure shows how hard the blower is working against the duct system, filter and coil. CFM per ton compares delivered airflow with the system's size. Read together with temperature split and the blower table, they point to where the restriction or problem is.

Free guides: how to measure static pressure, CFM per ton chart and superheat vs. subcooling.

Which airflow book should you start with?

  • HVAC Airflow Made Simple — start here to measure static pressure and CFM correctly and find duct, filter and coil restrictions.
  • Advanced Airflow Volume 1 — for working techs: blower tables, temperature rise, ECM and PSC motors, heat pumps and gas furnaces.
  • Advanced Airflow Volume 2 — for difficult and repeat calls: airflow combined with compressor, charge, superheat and subcooling evidence, decision trees and case studies.

Related HVAC training

See the full HVAC troubleshooting hub, the English HVAC book catalog, or the same airflow series in Spanish at Flujo de aire HVAC.

HVAC airflow book questions

Which HVAC airflow book should I start with?
Start with HVAC Airflow Made Simple to measure static pressure and CFM correctly and find duct, filter and coil restrictions. Advanced Airflow Volume 1 is for working techs, and Volume 2 is for difficult and repeat calls.
Why check airflow before refrigerant charge?
Airflow problems can look like a refrigerant problem on the gauges, so weak cooling, comfort complaints and repeat calls are checked for airflow first, before touching the charge.
Is this airflow series available in Spanish?
Yes. The same airflow series is available in Spanish on the Flujo de aire HVAC page.
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