4 Reasons Your Car AC Might be Blowing Hot Air

Entering your car on a hot day, only to find your AC blowing hot air, can be a major downer. Getting down to the bottom of the problem as soon as it arises is the easiest way to save yourself the sweat and discomfort—but how can you figure out why your AC isn’t working as it’s designed?

A car AC blowing hot air can mean several things, and some are more serious than others. In some instances, it is simple to fix an AC blowing hot air into the car. In others, you might need professional assistance.

Let’s break down some of the common reasons why your car AC is blowing hot air.

1. Thermostat Settings

Sometimes, the solution is just overlooked because you assume the problem is bigger than it is. The first thing to do if your car AC is blowing hot air is to check your thermostat settings. You might be surprised how often vehicle owners push the wrong button (including us).

2. Clogged Air Filter

Just like the air conditioner in your home, your car air filter needs to be cleaned on a regular basis. A dirty air filter can prevent cold air from getting through. Replacing an air filter is not difficult, and can be done quickly.

Also, there are other indicators that your air filter is clogged. One is the fact that your car has a musty smell. A dirty air filter prevents not only cool air from getting through, but any fresh air at all.

A woman is having a problem with ehr air conditioning.

3. Refrigerant Leak

A refrigerant leak is just like it sounds, and this can cause your car AC to suddenly blow hot air. Refrigerant, or more commonly referred to as coolant, should not dry up. Refrigerant is stored in an airtight space to prevent it from evaporating, which it can do quickly.

And because of this, a refrigerant leak can be difficult to detect. Unlike oil that you might see dripping from the bottom of your car, refrigerant evaporates. However, if your AC is blowing hot air and you’ve ruled out the reasons above, this might be the cause.

Fixing this problem is not something that you can do at home. If you suspect a coolant leak, don’t hesitate to take your vehicle to the professionals. Coolant plays a role in not only keeping your air cool, but the entire system also.

4. Damaged or Broken Compressor

Your compressor can wear over time from day-to-day use. Additionally, if you haven’t run your AC in a while, the sudden use can disrupt the compressor. Some professionals recommend running your car AC at least 10 to 15 minutes per month regardless of temperature.

Like a refrigerant leak, there’s no DIY solution for this problem. You need a professional to replace your compressor.

Other Factors

These are only some of the common reasons why your car AC is blowing hot air. From broken cooling fans to faulty wiring, you should let the professionals handle your AC repair.

You might also have experienced your car blowing hot air through the vents while the AC is off. This can happen for a variety of reasons as well. Sometimes it could be due to outside air flow and warm air getting into your system. Other times it could be because you have a stuck door actuator.

Regardless of the reason why your car AC is blowing hot air, our team can fix it.

If your car is in need of air conditioning repair, contact our team.

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