Where is the heater box located in a 2001 Hyundai xg300?

In a 2001 Hyundai XG300, the heater box is located under the dashboard, typically on the passenger side of the vehicle. It is integrated with the HVAC (heating, ventilation, and air conditioning) system and is responsible for distributing warm air into the cabin. To access it, you may need to remove various trim panels and possibly the glove compartment.