Does Using Car Heater Consume Fuel?

1 Answers
DiDonovan
07/30/25 1:16am
Using the car heater does consume fuel. Although the heating system primarily utilizes waste heat from the engine, when the interior temperature doesn't meet requirements, the engine needs to perform additional work to deliver heat, which naturally increases fuel consumption. The warm air shouldn't be directed straight at the head, as prolonged exposure to hot air can cause driver fatigue. For extended heater use, it's advisable to periodically activate the external circulation mode or leave a small window gap. The car air conditioning system is an air regulation device installed in vehicles, serving three main purposes: 1) Cooling, heating, ventilating and purifying cabin air; 2) Providing passengers with a comfortable environment; 3) Reducing driver fatigue and improving driving safety.
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