ESCO Air Conditioning Practice Exam 2026 - Free AC Certification Practice Questions and Study Guide

Latent heat is the correct answer because it refers to the heat added to a substance without causing a change in temperature. Latent heat is associated with phase changes, such as when a substance transitions from solid to liquid or liquid to gas. During these phase transitions, heat energy is absorbed or released without affecting the substance's temperature.

The other options can be explained as follows:

- Sensible heat refers to the heat that causes a change in temperature in a substance.

- Superheat is the temperature increase of a vapor above its saturation temperature.

- Convection heat is the transfer of heat through a fluid (liquid or gas) by the movement of the fluid itself.