Does turning on the heater in a car consume fuel?

1 Answers
DanteRose
07/29/25 6:47pm
Turning on the heater in a car does consume fuel. In winter, it indeed increases fuel consumption. Although the heating system merely utilizes the residual heat from the engine, when the interior temperature does not meet the desired level, the engine needs to perform additional work to deliver heat, thereby increasing fuel consumption. However, it is not as fuel-intensive as using the air conditioning in summer. Air conditioning requires the use of a compressor, and the operation of the compressor consumes a significant amount of fuel. The car heating system consists of the cooling system, heating system, ventilation and air purification devices, and the control system. Components such as the evaporator, heater radiator, centrifugal blower, and control mechanism are assembled together, collectively referred to as the air conditioning assembly.
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