The Predicted Mean Vote (PMV) is a numerical index used to estimate the thermal comfort of individuals in a given environment. It is based on factors such as air temperature, humidity, clothing insulation, and metabolic rate. The PMV scale ranges from -3 (cold) to +3 (hot), with 0 indicating neutral comfort. PMV is commonly used in building design and HVAC systems to ensure that indoor environments meet the comfort needs of occupants. By analyzing the PMV, designers can make informed decisions about heating, cooling, and ventilation to create spaces that promote well-being and productivity.