Additional heater cores (CTP)
More heat when you need it
Almost all vehicles are fitted with heating systems, and an additional electric heating device called a Positive Temperature Coefficient, or PTC, is sometimes added to a system to provide additional heat during some transient phases.
PTC’s are self-regulated electric heaters used to complement the main heater core. They are generally located after the heater core but can sometimes be placed in the ducts (the feet heater). PTC’s are often introduced to climate control systems to compensate for a lack of heat availability, which can be the case with high efficiency engines.