Where is the heater temp control valve located?

The heater temperature control valve is typically located in the engine compartment, integrated into the coolant hose system that connects the engine to the heater core. It can often be found near the firewall, which separates the engine bay from the passenger compartment. In some vehicles, it may be part of the HVAC (heating, ventilation, and air conditioning) control assembly inside the cabin. Always consult the vehicle's service manual for the exact location, as it can vary by make and model.