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Why is the car AC blowing hot air?

1 Answers

StBrooke

07/29/25 10:23pm

The reasons for a car AC blowing hot air include: insufficient refrigerant in the car AC, leaks in the AC system, poor heat dissipation in the AC cooling system, clogged AC filters, compressor malfunctions, etc. Here are some car AC maintenance tips: 1. Avoid using AC immediately under strong sunlight: In summer, parked cars can get very hot inside. After starting the vehicle, don't turn on the AC right away. Instead, open all windows to ventilate and let the hot air out. Once the interior temperature drops, close the windows and turn on the AC. 2. Alternate between recirculation and fresh air modes: Many car owners are unsure about when to use the recirculation or fresh air mode in their car AC. When a car has been parked in the sun for a long time, the interior temperature can be higher than outside. Turning on the recirculation mode immediately upon entering the car won't be effective. Instead, open the windows for ventilation and use the fresh air mode to expel the hot air. Once the interior temperature drops, switch to recirculation mode for better cooling. However, prolonged use of recirculation can make the air inside stale, so it's important to alternate between recirculation and fresh air modes. 3. Occasionally use the highest fan speed: Frequent use of the AC in summer can accumulate dust. Occasionally setting the fan to its highest speed helps blow out residual dust in the air ducts. To maintain fresh air inside the car, clean the AC filter regularly.

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