HVAC/R AI Pro
Airflow checks
HVAC Field Guide
How to measure airflow in HVAC systems
Airflow affects capacity, comfort, coil performance, and system life. Measuring it well means combining CFM targets with field readings instead of guessing.
Field workflow
What this guide covers.
Learn how HVAC technicians measure airflow using static pressure, CFM targets, and field diagnostic tools.
Know the CFM target
A common cooling target is about 400 CFM per ton, but the right airflow depends on equipment, climate, latent load, blower settings, and manufacturer data.
Use static pressure
Static pressure helps identify restrictions and can be paired with blower data to estimate delivered airflow.
Connect airflow to symptoms
Weak airflow can cause poor cooling, frozen coils, comfort complaints, noise, and equipment stress. Airflow checks should sit close to troubleshooting and duct sizing work.