5 Reasons Your Car AC is Blowing Hot Air and Fixes

The depletion of the ozone layer has dramatically influenced the degree of heat felt all over. For those in the tropics, the heat level is quite alarming. As fascinating as the summer can be, your driving experience can get ruined when your car AC starts blowing hot air.

A few reasons may be responsible for this. 

Reasons Your Car AC is Blowing Hot Air

1.  Faulty Cooling Fan

The importance of a car cooling fan cannot be overstated. The car cooling fan is designed to help the condenser maintain an excellent state. The condenser is meant to stay calm to fully maximize its ability to convert gas into liquid so that the AC system can function correctly.

If the cooling fan is not working correctly or has stopped working, it can cause severe problems for the condenser. As such,  the condenser will become hot. As a result, your car AC could be gushing out hot air. 

Most times, when there’s a fault with the condenser, it can be displayed by the vehicle. As a driver/car owner, it is imperative to stay sensitive to any symptoms given/displayed by your vehicle.

How To Fix Car AC Cooling Fan

Your car AC cooling fan, for several reasons, may stop working correctly. It could result from an electrical short-circuit, blown fuses, or breakage, which your mechanic can fix.

But unfortunately, a cooling fan (when broken) is not listed among the go-to-fix items. Once damaged, it is better to get it changed immediately by a verified and reliable automobile workshop.

2.  Leakage of Coolant

As the name implies, a coolant is a liquid or gaseous substance that is responsible for the regulation of temperature in a car AC system. 

Once your car AC starts blowing out hot air, it may indicate that leakage has occurred somehow, somewhere. Blowing out of warm air by your car AC is one of the most familiar symptoms of coolant leakage.

How To Fix Car AC Leakage

Most, unfortunately, you cannot feasibly discover the point of leakage (if the leak is internal) unless you are already trained on how to go about it. Otherwise, refer to auto care.

But if the leak is not external, here’s how to discover it:

  • Some cars have low coolant indicators.
  • Check the car for any leak sign (bubbling, spraying, or dripping).
  • Check the radiator, hoses, and engine.

If it’s a small leak, it can be resolved using a flex. All you need to do is cover the opening with flex.

You can also make use of the easy egg fix.

3.  Car AC Condenser May Be Blocked

The primary function of the condenser in your car AC system is to keep the refrigerant cool. 

As the heat is absorbed from your cabin by the refrigerant, the condenser then helps to keep it in a relaxed state. But when the condenser fails to do its job, the resultant effect is you getting slapped in the face by a blast of hot air.

If you discover a leak in your system, as stated above, you should immediately check out if there’s any blockage in the condenser. If there’s a leakage, it could allow moisture, dust, and dirt into the condenser/system, leading to blockage.

Due to the position of the condenser, it can cool down the air that flows through the grate. But if the condenser gets blocked, the air won’t flow. If air doesn’t reach it, the refrigerant cannot cool down as intended. A blocked condenser can also cause your car AC to blow hot air.

How To Fix Car AC Condenser

If your car condenser is blocked, it is easy to fix and can be done by yourself. The following steps could help:

  • You need to access the radiator by opening up the vehicle.
  • Locate the condenser unit and disconnect the pipes (in&out)
  •  Locate and dismantle the condenser without interfering with other parts of the system.
  • Get a soft dry cloth, locate the entry and exit pipe and clean gently. Also, check the bottom plate and clean any residue found.
  • Assemble all parts back as found.

4.  Broken Car AC Condenser

In most cases of broken condensers, the causes are traceable to punctures from debris on the road and sometimes collision.

After going through a bumper bump, you could check to see if your car’s condenser has gotten any damage upon impact. That way, you’ll be sure about the state of your car.

Unlike the case with a blocked condenser where you can try to fix yourself, broken condensers are not meant to be fixed. Once broken, it is better to get it replaced.

Of course, your car will keep working even if your condenser is broken or faulty. Yet, it doesn’t imply that you continue to use the car without getting it fixed.

The adverse effect of a failed condenser is too-high system pressure.

How To Fix

It is better advised to get it replaced as soon as possible.

5.  Faulty Electrical System

All the components that make up your car AC system may be in a good state, yet you still get hot air coming out of your AC. If that’s the case, then an electrical problem might be responsible.

When this happens, it may be because of blown fuses or even frayed or worn-out wires. It would be best if you ran some checks on your car regularly, most especially before starting your car. You should check for wiring problems and the fuse box to ensure that everything is in order.

How To Fix Faulty Electrical System

Electrical problems are generally tricky. If you don’t know about it at all, don’t pretend you do. 

Some other problems can have their fixes placed on the DIY list, but not an electrical problem.

Except you are an electrician, or you seem to know your way around it, don’t try to do it yourself.

It is advisable to always get an expert in the field to help you deal with electrical problems.

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