[B]"If airflow is not confirmed the other measurements are meaningless[/B]."
How much profit could be made my confirming the airflow??[/QUOTE]
Confirming air flow WB and DB is a one way to confirm the air flow is right. But when charging a system We use SC and SH. If you know so much why don't you do PM. Some guys can tell what wrong with systems just by looking at it, but they still should confirm with gauges.