HVAC Field Guide
How to measure airflow in HVAC systems
Airflow affects capacity, comfort, coil performance, and system life. Use CFM targets, field readings, and equipment data together to understand how the system is performing.
Field workflow
Checks for the call.
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.
Bring symptoms and measured readings together in the HVAC troubleshooting workflow. Verify AI guidance against equipment documentation and safe field procedures.