What is the difference between a Duct Smoke Test and an Energy Rating?

An Energy Rating is a quantitative report that contains as one of the inputs, a duct leakage number. A Smoke Test is a visual method to identify and correct failures in the duct system, without the need to quantify a number. That number will be lower if measured later for an Energy Rating. An Energy Rating tells “how much” with measuring instruments. A Duct Smoke Test tells visually “how much” in addition to “where”.