Can a car vent blow cold one side and hot the other?

In a vehicle with dual temperature controls you may encounter a situation where the vent blows cold one side, hot on other side or vice versa.

What does it mean when AC blows hot air on one side?

AC Blows Hot or Cold Air on One Side with Clicking Sound. If you experience the symptom of the AC blowing hot or cold air on one side but not the other and it’s accompanied by a clicking or ticking sound, it probably means a gear in the temperature blend door actuator is faulty and the actuator needs to be replaced.

What was the problem with my Honda Accord in 2007?

Answering the original question, how to fix cold air or hot air coming out of vents, even when the setting is the opposite. I had the problem on my ’07 Accord, dual temp controls in the EX-L. The problem is with the “air doors” that control the hot/cold air mix flowing into the cabin.

Why does my Honda Accord make a clicking noise?

It started with an intermittant grinding or clicking noise in the center console behind the climate control panel, which persisted for a couple years, slowly getting worse at changing the temperature. The motors that control the mix wear out and need to be replaced.

In a vehicle with dual temperature controls you may encounter a situation where the vent blows cold one side, hot on other side or vice versa.

What do you need to know about accord ventilation?

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Why does my Mazda Protege heater only blow out front vents?

Eighth generation of the Mazda Protege. Heater only blowing out front vents, no heat to feet or defrost. Why? Heater working but only blows out front vents. No heat to feet or defrost.

How to get hot air on driver side?

Press it along with the defrost button. Then press the climate control button again. Presto! Lol 103 people found this helpful. Thanks for the fix. Hot air on passenger and backseat vents and cold air on driver side.

What to do if your air conditioner is blowing cold air on one side?

If the air conditioning in your car is blowing hot air on one side and cold air on the other, there could be a simple fix like adjusting the temperature or it could be time to replace a part like the temperature blend door actuator.

What causes hot air to blow out of driver side vents?

2004 silverado – hot air blows out of driver side vents, pass side stays cold. Restart the truck, it returns to normal. Click to expand… Give this a try before you starting taking the dash out and buying parts. Same thing has happened to me a few times in the past. Usually just the passengers side.

Why does the a / C blow cold but warm drivers?

The problem I have is that when you turn the ac on the cool air only comes out the 2 vents on the passenger side. The 2 vents on the drivers side have warm air blowing out. A/C is controls are set to max air and max cold on the temp control. Answer: Most common problem is a bad temperature door actuator if it does have dual zone A/C.

Why are the vents on the passenger side warm?

Repairs for this problem = A/C compressor, orifice tube and drier replaced about 1 year ago. The problem I have is that when you turn the ac on the cool air only comes out the 2 vents on the passenger side. The 2 vents on the drivers side have warm air blowing out. A/C is controls are set to max air and max cold on the temp control.

Why does my HVAC blow cold air and hot air?

Drivers changed air temperature far more often than they change the mode (defrost, floor heat, dash vents, etc.), so the temperature actuators generally fail first. When that happens, the HVAC system can be stuck on blows cold air or blows hot air. In a dual zone system, you wind up with a blows cold one side, hot on other side condition.

What should I do if my car a / C is blowing hot air?

Check the front of your vehicle for debris, the engine cooling fans for proper operation, and your cabin air filter for debris and dirt. The refrigerant in your system also needs to be able to flow properly through the system. Check your compressor for proper operation, clogs in your system and the proper amount of refrigerant.

How to diagnose blows cold one side, hot on other side?

So your first step in diagnosing a blows cold one side, hot on other side condition is to operate each temperature control to see which side changes temperature. The actuator that changes temperature is good, the actuator that doesn’t is bad. This test also proves out the HVAC controller.

Why is the front vents warm but the rear vents are cold?

The gauge showed that the system was low and I started to fill the system. The compressor clutch did turn on and the system is currently at 45psi (fill zone). Now, the rear vents is blowing cold air but the front vents is still blowing warm air.

Why does my Chevy Silverado blow hot air?

My 04 silverado starts off cold on both sides then sometimes the driver side vents will blow hot air. when we stop and turn off truck and start it up and it is fine again. Could it be the thermostat for that side not working??? anyone have any answers for this problem?

What should the temperature of the air vent be?

Place the probe thermometer into the only open air vent and after a few moments check the reading. 7. With an outside temperature of about 90F (32C), you would expect a thermometer reading of between 40F-50F (5C-10C) in the air conditioning duct. Anything above this would require servicing by a qualified auto air conditioning mechanic.

How is hot air discharged from a steam vent?

This is different from the valve on balanced pressure type air vents, which opens at a temperature that is a certain number of degrees lower than the saturation temperature of steam. Hot air is therefore discharged at all times regardless of fluctuations in steam pressure.

When to open and close air vent for steam?

The valve remains closed as long as the temperature around it is near saturation temperature. As the inflow of air causes the temperature to drop, the valve once again opens and the air is rapidly discharged. Removing hot air and other gases in equipment is just as important during operation as at start-up.

Why does my car air conditioner blow cold then warm?

Any number of culprits could be causing your car A/C to blow cold then warm air, including: A Leak in the A/C System A small refrigerant leak is the most common reason a car’s A/C gradually loses its cool.

What to do if you have water on your passenger side floor?

If you are experiencing water on the passenger side floor of your car or truck, and if it’s not antifreeze, 99% of the time it is a simple fix: unclog the exit tube for your AC. Category Autos & Vehicles Show moreShow less Loading… Advertisement AutoplayWhen autoplay is enabled, a suggested video will automatically play next.

Why does the AC only work on one side of the car?

Today was the first day where I turned on the AC and I noticed that both driver and passenger are set to 60, but the passenger side was blowing out warm air, while driver side was cold. Any ideas? iDrive is configured the same for both sides under climate control.

Why is the air on one side hotter than the other?

If the AC is turned off, the HVAC fan is turned on, not in “recirc”, and the temperature control is set to the cold position, is the air coming in through the vents significantly hotter on one side?

Is the heat blowing on the passenger side?

Heat is blowing on… When I turn on the heat, the passenger side is receiving warm/hot air but drivers side is receiving cold air. Wow, mine is doing the same thing.

Why does my car AC blow cold air on one side?

If the car AC blows cold air on one side and hot on the other, there are a few different causes but it’s likely the blend door actuator, also known as the temperature blend door actuator or vent mode door actuator

Is there a heater on the passenger side?

2010 Laramie recently had heater core and evap replaced after having the same issues described in this thread with heat on passenger side and blowing cold air on drivers side. There was also an antifreeze smell that got progressively worse.

What kind of car blows hot air on one side?

CAR BLOWS HOT AIR ON ONE SIDE COLD ON THE OTHER SIDE. HEATER PROBLEMS DODGE, JEEP, CHRYSLER, RAM – YouTube

Why is the air only blowing through the front vents?

The air only blows through the front defrost vents, the back air works fine. What could that be? have the same problem? Check for a vacuum leak see picture and look at the vacuum motors see if they are getting vacuum when put on defrost/floor etc..

Why is air not blowing through the vents?

The air conditioner is blowing cold and hot at the same time, cold on every vent besides the passengrer side. The air is cold so I know it is not the freon helpful? There is a blend door in your heater and it’s either stuck or not working. It ‘s electrical or vacuum.

Why are my front vents on my Chevy Trailblazer not working?

Recently my front vents stopped working on my 2004 Chevy Trailblazer. I’ve tried to recalibrate by taking out the fuse, waiting a couple minutes, putting the fuse back in, turning the car to run, letting it go through its motions, but that didn’t work. The air blows cold, but it is only coming out at the feet, side vents and defrost.

Why is the pass vent on my heater not working?

There is a blend door in your heater and it’s either stuck or not working. It ‘s electrical or vacuum. You can reach your hand under the dash and see if you can move it one way or the other. You should be able to see if it will start to put the pass vent cold or not.

Why are the vents on my Toyota Tacoma Hot?

Driver side air vents were cool and the passenger side air vents were hot. Did some reading up like others and decided to try recharging with some freon before i go to deep in taking stuff apart. After that, truck blew cool air on all vents. bout 2 weeks later began blowing hot air on passenger side.

Why does the AC blow hot air on the driver’s side?

If I put the a/c very cold, it seems to be ok, but then when I move the temp up a few degrees, the bottom of the vent on the right side of the steering wheel is warmer. Any clues? 13 people found this helpful.

Where does the a / C blow hot air and cold air?

Anyone else experience the A/C blowing hot air from the drivers side left vent and the left most center vent and cold air from passenger’s right most center vent and right vent? What model year? You may be low on refrigerant.

Why does my Mercedes air conditioner keep blowing hot air?

In many models, the AC keeps blowing hot air even after recharging the coolant. It is a frustrating problem, especially during the summer, when it is almost impossible to drive a car without the AC on. A Mercedes air conditioning reset is a possible solution. Do you know how to do it? Is there any other way to fix the glitch?

What to do if your Mercedes AC does not reset?

The AC system is reset now and the hot air blowing problem is likely to be solved. If your Mercedes car does not respond to this procedure, you should check the owner’s manual. For example, if you want to know about Mercedes E320 AC reset, it is better to check the manual and follow the manufacturer’s recommendations.

How to reset a Mercedes air conditioning system from Japan?

To be on the safe side, hold them until their LED lights start flashing. Step 3: Wait for about a minute for the LED lights to stop flashing. When they do, turn the car off. Wait one more minute before restarting the engine. The AC system is reset now and the hot air blowing problem is likely to be solved.

What happens when Mercedes Benz air suspension stops working?

When they stop working the air suspension control unit may no longer be able to recognize the height of the car. Your Mercedes-Benz will greet you with a warning message on the dash related to the airmatic failure. The car height may be correct and the car still rides fine, it’s just that the computer doesn’t know that.

What is the recirculated air button on a Mercedes?

This is as far as the cylinder will go without cranking the engine. Press and hold the defrost and recirculated air buttons simultaneously. The defrost button has three lines going through it, while the recirculated air button has a picture of a car with a curved line through it.

What to do if your Mercedes AC unit stops working?

Be aware that if you reset the unit and it again stops working, you need to take the vehicle in to the dealership for repairs. Insert the key into the Mercedes ignition and turn the ignition cylinder to the “2” position. This is as far as the cylinder will go without cranking the engine.

Where are the vents on a car located?

Step 1 – Most air control vents are equipped with a flow control door that is located at the vent outlet. This door is controlled by a thumb wheel that when activated will open and close the vent air flow door. Work the thumb wheel from one side to the other while checking the airflow.

How to troubleshoot and repair vents low air flow?

Easy step by step guide one how to troubleshoot and repair vent low air flow, this article pertains to most vehicles. Step 1 – Most air control vents are equipped with a flow control door that is located at the vent outlet. This door is controlled by a thumb wheel that when activated will open and close the vent air flow door.

Why does the driver side vents blow cold air?

The driver side is not blowing cold air. It is temperament. Sometimes it will blow warm air, sometimes it will blow cold air. we just recharged the freon on April and today brought it to mercedes and the only fix they did is recharge the freon and they said it is working perfect. we just did that a few months ago..

Why does my a / C blow on the passenger side?

Most likely the door that diverts air between the driver and passenger sides is not functioning properly. However, it’s not impossible the issue could also be due to a low charge in the A/C system.

Why does my Toyota Sienna blow warm air?

But a system that is 1/2 pound low will cause the passenger side vents to blow cool or cold air, and the drivers side to be less cool or even warm on this car. There is simply not enough freon capacity in the system to cool the air to the drivers side. Only way to be sure is to drain and measure the freon in the system.

Why does my car AC blow cold air then blow warm air?

But that cold air turns warm fairly soon after because the high side pressures build to the point that the high pressure switch shuts off the compressor clutch. Once pressures equalize, the high pressure switch allows the compressor to start up again. The cycle repeats over and over, providing a short period of cold air, followed by warm air.

Why does my a / C blow warm from one side?

Even if you do not have dual-zone controls, there still may be two separate doors and motors to control the side separately. If all the basic A/C and heater systems are functioning properly, then a problem with one of the temp doors is most likely the cause.

Can a car blow air from one side?

Most of today’s cars and trucks have the ability to blow different air temperatures form the drivers and passenger side. Even if you do not have dual-zone controls, there still may be two separate doors and motors to control the side separately.

Why does my a / C vents blow cold but warm drivers?

It will not be apparent if just looking at freon gauge pressures- they will be normal. But a system that is 1/2 pound low will cause the passenger side vents to blow cool or cold air, and the drivers side to be less cool or even warm on this car. There is simply not enough freon capacity in the system to cool the air to the drivers side.

Where does the cold air come from in a car?

Why does cold air come out passenger side?

User27287 is right, flushing the coolant system will not help as you do not have an issue with your coolant system as evidenced by heat production on one side of the car. The electronic mode actuators move doors inside the HVAC ducts to channel hot or cold air to the desired location. One or more of these are not functioning properly.

Why is there no heat on the passenger side?

If having your heater core replaced, since they already have the front of the car gutted out to the tune of about $550-800 in disassemble/reassemble labor, might as well pay the extra $300-550 for new boxes while they’re at it. This is the reason why you have no heat on the passengers side.

Where does the heat come from on the drivers side of the car?

It can flow heat to the drivers side but not allow coolant to go thru the whole heater core where the air vents for the passenger side draws heated air from. By the design, there is no other explanation IF you have good heat on the drivers side.

Why does my a / C blow hot air on the driver side?

Could be a multitude of things and I’d bet they’re electronic in nature. You have two air mix control dampers; one for the driver’s side and one for the passenger side that are independently controlled and operated by electric servo motors. It sounds like your a/c is operating fine since you get cold air on the passenger side.

Where is the driver’s side air mix servo located?

The dealer has a tester for checking the function of all the different sensors, servos, etc. Before you do that, look under the dash on the driver’s side, up to the right just under the water hoses on the side of the ventilation system. That is where the driver’s side air mix servo is located.

Can a IIRC heater only heat on the driver side?

IIRC it only heats air in the drivers side, so if the heater core is not functioning and letting hot water through, it would prevent it from providing the normal heat and the cold incoming air would be blown out all vent that are upstream of the electric heater. I to have this problem. Manual hvac controls.

How does the Climatronic blow hot air only to the drivers side?

Climatronic blows hot air only to drivers side. Last night driving home with my wife, I was getting hot so I turned my side down to 60 F. Her side was at 70 F, but my side didn’t cool down. I then turned my side to “LO” and in doing this the fan turns on high and the air was so hot coming out of the vent that I couldn’t keep my hand in front on it.

Is there heat on the passenger side of the Passat?

I am getting no heat on the passenger side. Fell like the air is coming from outside Any idea? First posts normally go in introductions else you could get a free fix and we never see you again!!! Don’t think that making an intro will fix this comment as you’ve already ask the question.

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