Sources

How is the airflow test performed?

• The Energy Conservatory, TrueFlow Air Handler Flow Meter Operation Manual (2006), chapter 3 and appendices B, C
  https://www.energyconservatory.com/wp-content/uploads/2014/07/TrueFlow-Manual-DG700.pdf
• The Energy Conservatory, Quick Guide TF2 (probe placement, the two pressure readings)
  https://www.energyconservatory.com/wp-content/uploads/2014/07/quick_guide_2_using_the_tf_plates_and_dg-700.pdf
• The Energy Conservatory, Digital TrueFlow overview booklet (2026), pages 3 to 6
  https://www.energyconservatory.com/wp-content/uploads/2024/12/Digital-TrueFlow-Overview-Booklet.pdf
• HVAC School, System Airflow Measurement with the TEC TrueFlow (video page)
  http://www.hvacrschool.com/videos/system-airflow-measurement-w-tec-trueflow/
• Bonneville Power Administration, PTCS Airflow Test detailed instructions (altitude, 3-pascal threshold)
  https://www.bpa.gov/-/media/Aep/energy-efficiency/residential/residential-ptcs-essentials/airflow-test-detailed-instructions.pdf

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