How does the heater system work in a 2003 Taurus?

In a 2003 Ford Taurus, the heater system operates by circulating engine coolant through a heater core, which is a small radiator located inside the cabin. When the engine is running, coolant absorbs heat and flows through the heater core, where a blower fan then pushes air over the heated core and into the vehicle’s interior. The temperature can be adjusted using the climate control settings, allowing for warm air to be directed inside the cabin during colder weather. The system relies on the vehicle's cooling system to function effectively, ensuring proper heating performance.