Why Your Truck Air Conditioner is Blowing Hot Air

The air conditioner system, commonly known as the AC, is an essential part of your truck. The AC supplies cool air during hot seasons. Thus, with the AC, you will get more relaxed and comfortable during the scorching summer sun. 

Therefore, it is an essential piece of equipment in your truck if working correctly. But if it fails to blow cool air, your ride during summer will be the worst. Whenever you realize that your AC is not functioning properly, seek the services of a professional to check and solve the possible problem. In this guide, you shall know why your AC might blow hot instead of cold air.

Signs Your Truck AC is Faulty

Like other parts of your truck, the air-conditioning system also becomes faulty. They usually fail to blow cool air when faulty. Here are three common signs you will note from your truck when your AC becomes defective.

The Electrical System Problems

The air conditioning system of your truck has wires, fuses, and relays that work jointly. If any of the electrical components fail due to wear, the cooling system as a whole will not function. Instead, it will shut down to prevent further damage. 

The problem of air conditioner C blowing hot air due to electrical issues is hard to locate and requires a professional truck electrician to identify and fix it. 

Refrigerant Leak

A refrigerant leak is unique and hard to identify, and this is because when it is not under pressure, it will evaporate. The entire AC system is under seal, so it doesn’t require refrigerant top-offs. When the level of the refrigerant drops, then there is a leakage that you should consider addressing before things get out of hand.

Air conditioner refrigerant leakages are unlike the other fluid leaks you will note under your truck. Instead, when refrigerant leaks, you will experience oil residue around your AC hose or connections.

Faulty Compressor

The compressor is the part of the AC that moves the refrigerant through various hoses and filters that remove heat from your truck’s cabin. A compressor is a complex machine. Therefore, several things, like contaminants or failed parts, can lead to its failure.

Tips To Give Your Air Conditioner Long Service

During winter or when you rarely use your air conditioner, ensure you run it for at least 10 minutes every month. Do this regardless of the temperature of the surrounding. 

Another golden tip is to take your truck to the nearest repair shop, where a professional mechanic will run several checks to determine the condition of your AC system. These experts will fix it when they find it faulty.


The air conditioner system blows in the cool air, neutralizing the heat inside your cabin. It has parts such as the compressor, condenser, accumulator, evaporator, and thermal expansion valve. These parts work jointly. When these parts are faulty, your AC system will not function effectively. As a result, it will blow hot air instead of cold air. The above are the possible reasons that might make your AC blow hot air. If you note that your AC is not working perfectly, consider fixing it.

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