Corrosion has wasted away large sections of the fins attached to an air conditioning cooling coil. In assessing the effects on the system you would assume which of the following to be accurate?

Correct Answer: Option A — The coil now has a lower efficiency and a higher bypass factor.

Corroded and wasted fins reduce the heat transfer surface area, lowering overall cooling efficiency and increasing the air bypass factor, meaning more untreated air passes through the cooling coil without contacting heat transfer surfaces.