AC Vent Temperature Car: What Should Your AC Be At?

Which AC vent temperature car should it be at? This is a typical query regarding how the cooling system operates.

If you’re anything like many of our fellow drivers, hating it when the air gets too chilly but having no idea of what to do, here is definitely where you should land on.

Read on to avoid messing with the temperature controls and eventually lose your ideal thermal rate!

AC Vent Temperature Car: How Cold Should The AC In My Car Be?

AC Vent Temperature Car

What temp should car aircon be? As a general guideline, the air temperature at the AC outlet should be between 27° and 38° Fahrenheit (-3° to 3° C) if the ambient air temperature takes a halt at 70° Fahrenheit (21° C).

What if the surrounding air temperature reaches 80° or 90° Fahrenheit (27° to 32° C)? In this case, the AC temperature should be between 33° and 48° Fahrenheit (3° to 9° C).

Due to the wide variances, it is crucial to consult your vehicle’s owner’s manual or the manufacturer’s website to determine the precise A/C temperature under various weather circumstances.

How To Get The Proper Auto A/C Vents Temperature?

A heads-up: The process is straightforward to get it done right! Even when you are tech illiterate, there is not much to worry about since the AC in a new car will be extremely effective.

Things might take a bit longer in case the frequency of you using the automobile is lesser. Yet, two to three years is still a risk-free interval to ensure that components like your vehicle’s air conditioner maintain running well.

Now, let’s look at how to make the car AC temperature range in your car blow as you wish.

Step 1:

First and foremost, get your car a well-trained auto technician to keep the A/C system in your vehicle carrying out its task ultimately.

Insurance like that will offer great assistance in cleaning your vehicle’s air conditioning system and inspecting each component to ensure the operation is on the right track.

Step 2:

Never pre-cool the air conditioning in your car. Because the compressor operates more quickly when your automobile is moving, this system also performs best during that duration.

Instead, as you start the engine, turn on the fan if the temperature inside your car is too high.

Open the back windows for a maximum of 25 seconds and at least 10 seconds. This step will drive the warm, muggy air outside.

Step 3: 

Modify the fan while setting the temperature to the lowest. Also, remember to turn off the recirculation function on your air conditioner so that your back passengers can rest for the most.

Why Is Your A/C Not Cold Enough?

Vacuum Leaks

There could be several causes for your car’s A/C not being cold enough. The list includes:

  • Clogged refrigerant hose.
  • Loss of refrigerant.
  • Failing motor blower.
  • Vacuum leaks.
  • Failing motor blower.
  • Failing compressor or compressor clutch.

Loss of Refrigerant

Lack of refrigerant is a typical problem with older cars, which can result in the air conditioner in your car not blowing out poorly cool air.

When such a situation happens, a seal or hose failure is usually the culprit to blame.

Here is the mechanism: Oil is present in the gas used in air conditioners to lubricate internal seals. These seals may get dried without it often, allowing refrigerant to leak.

Clogged Refrigerant Hose

A network of hoses and tubes, including a charged hose for the refrigerant or an expansion tube, is what makes up the air conditioning system in your car.

Even if it is just one of these that has clogs in the system, the refrigerant flow and, ultimately, your A/C cooling progress could get affected, eventually resulting in the whole car smelling funny. Sometimes, your AC even smells like pee.

Vacuum Leaks

Leaks inside the air conditioning system are another cause that would be a concern in handling the AC car temperature.

In this case, defective wiring and electrical problems are the major sources that brought forth the problem.

How can we know if it is the leak that makes things go wrong? The first indication is when you see wet spots all over your car’s interior.

Failing Motor Blower

The motor blower is in charge of distributing warm or cool air within the car.

Therefore, if you sense that the air conditioner produces little or no air, chances are the motor blower may be the root to address.

Check the car AC vent temperature system first to see whether any mildew and mold are developing inside or the air filters are getting clogged.

Should both pass inspection, you can say for sure that the failing motor blower is indeed to blame.

Failing Compressor Or Compressor Clutch

Your air conditioner’s capability will also be under the influence of a compressor clutch or compressor that is not operating properly. Your car AC compressor shuts off after a few seconds is not a rare case.

How Do I Check The Temperature Of My Car AC?

Since there are barely any automobiles’ thermometers that can work properly the way we wish them to, you’ll first require a thermometer equipped with a long probe that can fit into the center air vent on the dashboard of your car.

The good news is that they are inexpensive and easily accessible at most auto parts retailers!

  • Step 1: Park your car somewhere outside, away from the sun’s path.
  • Step 2: Take a temperature reading outside the car. This will allow you to assess how effectively the air conditioning is functioning.
  • Step 3: Except for the middle air vent on the dashboard, all the air vents and car windows should not be left open.
  • Step 4: Leave the fan running at a slow pace while turning on the engine. Also, keep in mind to set the air conditioner to the coldest level feasible.
  • Step 5: Wait for a little time till the car A/C vent temperature completely starts up.
  • Step 6: Check the reading after a few seconds by inserting the probe thermometer into the only open-air vent.
  • Step 7: Set the thermostat to your desired temperature.

Tips To Keep The Car Air Conditioner Feeling Cool

Tips To Keep The Car Air Conditioner Feeling Cool

Replace The Air Filters

There is a high likelihood that the air filters in your car’s air conditioner are getting blocked by dust and debris.

When such situations occur, cool air can no longer get through the system, making your automobile not productive as expected.

That is why it’s vastly necessary to have the filters sanitized, ideally once a year.

Don’t be afraid to get a proper replacement if you see any sign going further than anticipated. Remember that an earlier cure is always a better and less costly cure!

Park In Under The Shades

You may need quite decent patience to wait for the air conditioner in your automobile to breeze well on a sweltering day.

That phenomenon is absolutely common and causes no bother at all if you consider the weather as an objective condition.

However, saying so doesn’t mean there is no way to help you out of that lengthy contemplation. Purchasing a sun shade for your windshield is one potential remedy that comes in sight.

That way, the shade functions by reflecting the sunlight. As a result, when you get back inside, the temperature in your automobile won’t be too high, but rather at a more pleasant rate.

Avoid Turning The Air Conditioning Up To The Maximum At Once

Many of us must do that all the time whenever getting into our car after suffering extreme blazing weather outside.

Little did you know, not only is this execution not the best way to use the AC, but it can also put yours at risk of malfunction due to over-activation.

As a result, you should switch off the car air conditioner vent temperature and crank up the fan. This will aid in clearing the system of the hot air and humidity.

After that, to obtain maximum efficiency, switch the air conditioner on to its highest level and resume using the fan.


Now that you know how much AC vent temperature car should breeze, it is time to check if these above tip-offs are helpful to your experience! 

For any problems not yet resolved, do not hesitate to contact a reputable professional car A/C technician or leave a comment to let us lend you a hand.

See then!

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