How to Measure Total System Airflow w/ Steven - HVAC School

Total system airflow is difficult to measure directly; we can use flow hoods, but they have their limitations, especially on systems that have multiple returns.

HVAC Air Flow_Step-by-step_TESP

Ducted Returns Building America Solution Center

Troubleshooting Your HVAC Before Calling the Pros

Duct Design 5 — Sizing the Ducts - Energy Vanguard

BTMETER BT-856A Pro CFM Anemometer Measures Wind Speed

BTMETER BT-846A Pro HVAC Anemometer Measures Wind

ANSI Standard 310 Workflow & Field Measurement Overview

Total Furnace Airflow and Precision Manometer w/ TEC TrueFlow

ICC, ACCA, and RESNET Develop New Standard for Grading HVAC