I’ve Got Hot Air Blowing Out of My Car’s Vents

You don’t want hot air blowing out of your car’s vents in the summer. This is a sign that there is something wrong with your vehicle’s air conditioning system. Hummel’s Automotive & Diagnostic Repair can check the AC to see why it isn’t blowing cold and refreshing air through the vents. We work with AC systems all the time and find the following problems are usually the culprit.

Low Refrigerant

One of the first things we will look at is your refrigerant level. Air conditioning refrigerant evaporates over time. This means that if you haven’t had your AC serviced in years, you may not have enough refrigerant in the system to cool off the air. The refrigerant can also leak out of the hose connectors. This, naturally, will reduce the levels of refrigerant in the system, as well.

Clogged Condenser

The air conditioning condenser is located behind the grille. This unfortunate location means that a lot of dirt blows over and into the condenser. Unfortunately, this dirt will eventually clog the condenser and it will fail to function. If your condenser is malfunctioning because it is clogged, you will end up with hot air blowing through your vents even though the air conditioner is on.

Dented Condenser

The dirt and debris that makes their way through the grille can also damage the condenser by denting it. Unfortunately, this, too, will make the air conditioner blow hot air. If the condenser is damaged severely, we will have to replace it in order to correct the problem. Your vehicle’s AC condenser definitely drew the short straw when it came to being positioned in the engine.

Malfunctioning Fans

There may also be a problem with the air conditioning fans. If they are malfunctioning completely, you may end up with no air flowing through the vents rather than hot air. The problem with the fans could be with the fans themselves, especially if they are old, or it could be an electrical system problem in your automobile that is preventing the fans from running.

Malfunctioning Compressor

Finally, the compressor takes the refrigerant gas and compresses it into liquid. This liquid is what cools the air. If the compressor isn’t used often, it will break down. You may not have used your air conditioning that much last summer, and you definitely didn’t use it during the winter. The hot air blowing through your vents could be caused by a faulty compressor.

Hummel’s Automotive & Diagnostic Repair in St. George, UT, is the only auto service shop you need for all of your vehicle maintenance and repairs. Call us today.

Photo by humonia from Getty Images via Canva Pro

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