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The extra heating device found in the Ford Escape is part of the Cold Weather Package. It is known as a Positive Temperature Coefficient (PTC) heater, which is an electrical unit that adjusts its own temperature without relying on traditional wires. These heaters are typically constructed from ceramic or a special type of rubber material. When installed, the PTC heater allows warm air to flow through the car's vents immediately upon starting in extremely cold conditions, instead of waiting for the engine to warm up. This component is situated in the A/C plenum box. Other amenities included in this package comprise heated seats, warmed side mirrors, weather-resistant floor mats, and a de-icer for the windshield wipers.
Ptc is short for positive temperature coefficient. This means that the ford escape is equipped with an electric heater that provides heat even before the engine is fully warmed up.