What does PTC mean in a car?

2 Answers
DiCamilla
07/25/25 4:37am
PTC in a car refers to a car heater, which is the abbreviation of Positive-Temperature-Coefficient. More information about car heaters is as follows: 1. Car heaters are mainly used to preheat the engine in winter and provide heating for truck cabs or passenger compartments. 2. Car heaters have become a standard configuration for buses. Proper use and maintenance of car heaters not only help extend the service life of the heating system but also eliminate potential safety hazards.
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KingMarie
08/10/25 5:28pm
PTC in cars refers to a Positive Temperature Coefficient heater, simply put, it's a self-regulating heating element. It's commonly used in automotive air conditioning systems or seat heating, especially prevalent in electric vehicles. Its working principle is that as the temperature rises, the resistance increases, slowing down the heating speed, and it automatically stops upon reaching a certain temperature to avoid overheating and burning out. I think this design is quite smart, not only energy-efficient but also safe and reliable, because traditional heating wires are prone to short circuits. Many car models now use this technology, for example, when starting the air conditioning in winter, PTC can quickly provide warm air, making the interior comfortable. However, prolonged use may lead to aging, causing slower heating, so regular checks of the electronic control system are helpful.
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