What Causes the Lack of Heat in a Car's Heating System?

[DelChase]

Car heating system not producing heat can be attributed to two main reasons: One is due to issues with the engine cooling system causing insufficient heat in the car's heating system, and the other is poor performance of the heating control mechanism leading to the same problem. During repairs, it is essential to first determine which of these causes is responsible before proceeding with the appropriate repairs. Additional Information: Reasons for the car heating system not producing heat: Cooling system issues. Potential problems with the cooling system include: First, the thermostat may be stuck open or opening too early, causing the cooling system to enter the major circulation phase prematurely. With low external temperatures, especially when the car is in motion, the cold air quickly cools down the antifreeze, preventing the engine water temperature from rising and consequently, the heating system from producing heat.