What causes hot air to blow from the rear when the air conditioning is turned on in the Volkswagen Phideon?

1 Answers
LaRachel
07/29/25 10:28pm
Hot air blowing from the rear when the air conditioning is turned on in the Volkswagen Phideon is caused by a malfunction in the air conditioning temperature control flap. Impact of air conditioning fan speed on fuel consumption: Turning on the air conditioning consumes more fuel mainly because the air conditioning compressor requires significant power to operate. However, the difference in power demand between high and low fan speeds is minimal. Therefore, within a certain speed range or wind resistance, using the air conditioning increases fuel consumption, while turning it off saves fuel. The impact of air conditioning fan speed on fuel consumption is negligible, including when only using the heater in winter. Impact of air conditioning temperature on fuel consumption: When it's too hot or too cold and the air conditioning is necessary, avoid setting it to the coldest or hottest extremes. A moderate temperature is sufficient. Extremely low or high temperatures significantly waste fuel.
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