The Causes of Car AC Blowing Hot Air All of a Sudden, How to Repair, and Prevent It to Happen Twice

Have you ever experienced your car AC blowing hot air all of a sudden? It makes you confused, doesn’t it? Car AC blowing hot air (why does car ac blow hot air) is one of the most common problems. The most important thing is that you know the causes, how to repair it, and the way to prevent it from happening again. The information below will help you.

The Cause of Car Blowing Hot Air All of a Sudden

There are some causes you should consider related to car AC that produces hot air. First, it can be because the air filter gets clogged. The function of the air filter is to remove solid impurities from the air. Clogging issues interrupt the airflow since dust and contaminants stick in the system. It makes the air circulate and pass through the AC system in high temperatures.

Second, a problem in the condenser can also cause car AC blowing hot air all of a sudden. This component cools and condenses the refrigerant vapor into a liquid form. It also composes other components, such as a motor, fans, condenser coil, circuit board, and compressor.

Third, the malfunctioning thermostat is another issue dealing with car AC that produces hot air. The function of this component is to regulate temperature, prevent overheating, and cool.

The Way to Repair Car Blowing Hot Air All of a Sudden

In case the air filter gets clogged, you should check it and clean the dust or debris. Use an air pump at the lowest level to get rid of the dust. The problem can be coming from the condenser if you hear any strange noises from the condenser unit and the AC blows hot air.

Even if you don’t hear anything from the condenser unit, it still is a sign of a faulty condenser. Replace the old condenser unit with a new one to fix this problem.
Use a multimeter to check the amounts of volts of the AC. The amounts of volts indicate the performance and condition of the thermostat. Bring your car to the dealer to replace the thermostat.

The Way to Prevent Car AC Blowing Hot Air

Regular maintenance is the key to preventing a car AC from blowing hot air. For example, you can replace the filter every 3 months. Remember to recharge the car AC with refrigerant.

On the other hand, you shouldn’t turn the AC on if the refrigerant is insufficient. Ensure that you turn the AC on regularly at least once a week or two weeks. It keeps the compressor working properly.

Remain calm when a car AC blowing hot air all of a sudden, especially while driving the vehicle. Turn it off and find out the problem first. Call a professional technician to solve it. Then, maintain the AC to prevent the same problem twice.